fix(pricelists): tolerate restricted DB grants and use embedded assets only

- Add bible/ with 7 hierarchical English-only files covering overview,
  architecture, database schemas, API endpoints, config/env, backup, and dev guides
- Consolidate all docs from README.md, CLAUDE.md, man/backup.md into bible/
- Simplify CLAUDE.md to a single rule: read and respect the bible
- Simplify README.md to a brief intro with links to bible/
- Remove man/backup.md and pricelists_window.md (content migrated or obsolete)
- Fix API docs: add missing endpoints (preview-article, sync/repair),
  correct DELETE /api/projects/:uuid semantics (variant soft-delete only)
- Add Soft Deletes section to architecture doc (is_active pattern)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.githooks/pre-commit

@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+repo_root="$(git rev-parse --show-toplevel)"
+"$repo_root/scripts/check-secrets.sh"

.gitignore

@@ -1,5 +1,16 @@
 # QuoteForge
 config.yaml
+.env
+.env.*
+*.pem
+*.key
+*.p12
+*.pfx
+*.crt
+id_rsa
+id_rsa.*
+secrets.yaml
+secrets.yml
 
 # Local SQLite database (contains encrypted credentials)
 /data/*.db
@@ -12,6 +23,7 @@ config.yaml
 /importer
 /cron
 /bin/
+qfs
 
 # Local Go build cache used in sandboxed runs
 .gocache/
@@ -63,4 +75,7 @@ Network Trash Folder
 Temporary Items
 .apdisk
 
-releases/
+# Release artifacts (binaries, archives, checksums), but DO track releases/memory/ for changelog
+releases/*
+!releases/memory/
+!releases/memory/**

CLAUDE.md

@@ -1,77 +1,24 @@
 # QuoteForge - Claude Code Instructions
 
-## Overview
-Корпоративный конфигуратор серверов с offline-first архитектурой.
-Приложение работает через локальную SQLite базу, синхронизация с MariaDB выполняется фоново.
+## Bible
 
-## Product Scope
-- Конфигуратор компонентов и расчёт КП
-- Проекты и конфигурации
-- Read-only просмотр прайслистов из локального кэша
-- Sync (pull компонентов/прайслистов, push локальных изменений)
+The **[bible/](bible/README.md)** is the single source of truth for this project's architecture, schemas, patterns, and rules. Read it before making any changes.
 
-Из области исключены:
-- admin pricing UI/API
-- stock import
-- alerts
-- cron/importer утилиты
+**Rules:**
+- Every architectural decision must be recorded in `bible/` in the same commit as the code.
+- Bible files are written and updated in **English only**.
+- Before working on the codebase, check `releases/memory/` for the latest release notes.
 
-## Architecture
-- Local-first: чтение и запись происходят в SQLite
-- MariaDB используется как сервер синхронизации
-- Background worker: периодический sync push+pull
+## Quick Reference
 
-## Guardrails
-- Не возвращать в проект удалённые legacy-разделы: cron jobs, importer utility, admin pricing, alerts, stock import.
-- Runtime-конфиг читается из user state (`config.yaml`) или через `-config` / `QFS_CONFIG_PATH`; не хранить рабочий `config.yaml` в репозитории.
-- `config.example.yaml` остаётся единственным шаблоном конфигурации в репо.
-- Любые изменения в sync должны сохранять local-first поведение: локальные CRUD не блокируются из-за недоступности MariaDB.
-
-## Key SQLite Data
-- `connection_settings`
-- `local_components`
-- `local_pricelists`, `local_pricelist_items`
-- `local_configurations`
-- `local_projects`
-- `pending_changes`
-
-## API Endpoints
-| Group | Endpoints |
-|-------|-----------|
-| Setup | `GET /setup`, `POST /setup`, `POST /setup/test`, `GET /setup/status` |
-| Components | `GET /api/components`, `GET /api/components/:lot_name`, `GET /api/categories` |
-| Quote | `POST /api/quote/validate`, `POST /api/quote/calculate`, `POST /api/quote/price-levels` |
-| Pricelists (read-only) | `GET /api/pricelists`, `GET /api/pricelists/latest`, `GET /api/pricelists/:id`, `GET /api/pricelists/:id/items`, `GET /api/pricelists/:id/lots` |
-| Configs | CRUD + refresh/clone/reactivate/rename/project binding via `/api/configs/*` |
-| Projects | CRUD + nested configs via `/api/projects/*` |
-| Sync | `GET /api/sync/status`, `GET /api/sync/readiness`, `GET /api/sync/info`, `GET /api/sync/users-status`, `POST /api/sync/components`, `POST /api/sync/pricelists`, `POST /api/sync/all`, `POST /api/sync/push`, `GET /api/sync/pending`, `GET /api/sync/pending/count` |
-| Export | `POST /api/export/csv` |
-
-## Web Routes
-- `/configs`
-- `/configurator`
-- `/projects`
-- `/projects/:uuid`
-- `/pricelists`
-- `/pricelists/:id`
-- `/setup`
-
-## Commands
 ```bash
-# Development
+# Verify build
+go build ./cmd/qfs && go vet ./...
+
+# Run
 go run ./cmd/qfs
 make run
 
 # Build
 make build-release
-CGO_ENABLED=0 go build -o bin/qfs ./cmd/qfs
-
-# Verification
-go build ./cmd/qfs
-go vet ./...
 ```
-
-## Code Style
-- gofmt
-- structured logging (`slog`)
-- explicit error wrapping with context

Makefile

@@ -1,4 +1,4 @@
-.PHONY: build build-release clean test run version
+.PHONY: build build-release clean test run version install-hooks
 
 # Get version from git
 VERSION := $(shell git describe --tags --always --dirty 2>/dev/null || echo "dev")
@@ -72,6 +72,12 @@ deps:
 	go mod download
 	go mod tidy
 
+# Install local git hooks
+install-hooks:
+	git config core.hooksPath .githooks
+	chmod +x .githooks/pre-commit scripts/check-secrets.sh
+	@echo "Installed git hooks from .githooks/"
+
 # Help
 help:
 	@echo "QuoteForge Server (qfs) - Build Commands"
@@ -92,6 +98,7 @@ help:
 	@echo "  run            Run development server"
 	@echo "  watch          Run with auto-restart (requires entr)"
 	@echo "  deps           Install/update dependencies"
+	@echo "  install-hooks  Install local git hooks (secret scan on commit)"
 	@echo "  help           Show this help"
 	@echo ""
 	@echo "Current version: $(VERSION)"

README.md

@@ -1,434 +1,66 @@
 # QuoteForge
 
-**Server Configuration & Quotation Tool**
+**Корпоративный конфигуратор серверов и расчёт КП**
 
-QuoteForge — корпоративный инструмент для конфигурирования серверов и формирования коммерческих предложений (КП).  
-Приложение работает в strict local-first режиме: пользовательские операции выполняются через локальную SQLite, MariaDB используется для синхронизации и серверного администрирования прайслистов.
+Offline-first архитектура: пользовательские операции через локальную SQLite, MariaDB только для синхронизации.
 
 ![Go Version](https://img.shields.io/badge/Go-1.22+-00ADD8?style=flat&logo=go)
 ![License](https://img.shields.io/badge/License-Proprietary-red)
 ![Status](https://img.shields.io/badge/Status-In%20Development-yellow)
 
-## Возможности
+---
 
-### Для пользователей
-- 📱 **Mobile-first интерфейс** — удобная работа с телефона и планшета
-- 🖥️ **Конфигуратор серверов** — пошаговый выбор компонентов с проверкой совместимости
-- 💰 **Автоматический расчёт цен** — актуальные цены на основе истории закупок
-- 📊 **Экспорт в CSV/XLSX** — готовые спецификации для клиентов
-- 💾 **Сохранение конфигураций** — история и шаблоны для повторного использования
-- 🔌 **Полная офлайн-работа** — можно продолжать работу без сети и синхронизировать позже
-- 🛡️ **Защищенная синхронизация** — sync блокируется preflight-проверкой, если локальная схема не готова
+## Документация
 
-### Для ценовых администраторов
-- 📈 **Умный расчёт цен** — медиана, взвешенная медиана, среднее
-- 🎯 **Система алертов** — уведомления о популярных компонентах с устаревшими ценами
-- 📉 **Аналитика использования** — какие компоненты востребованы в КП
-- ⚙️ **Гибкие настройки** — периоды расчёта, методы, ручные переопределения
+Полная архитектурная документация хранится в **[bible/](bible/README.md)**:
 
-### Индикация актуальности цен
-| Цвет | Статус | Условие |
-|------|--------|---------|
-| 🟢 Зелёный | Свежая | < 30 дней, ≥ 3 источника |
-| 🟡 Жёлтый | Нормальная | 30-60 дней |
-| 🟠 Оранжевый | Устаревающая | 60-90 дней |
-| 🔴 Красный | Устаревшая | > 90 дней или нет данных |
+| Файл | Тема |
+|------|------|
+| [bible/01-overview.md](bible/01-overview.md) | Продукт, возможности, технологии, структура репо |
+| [bible/02-architecture.md](bible/02-architecture.md) | Local-first, sync, ценообразование, версионность |
+| [bible/03-database.md](bible/03-database.md) | SQLite и MariaDB схемы, права, миграции |
+| [bible/04-api.md](bible/04-api.md) | Все API endpoints и web-маршруты |
+| [bible/05-config.md](bible/05-config.md) | Конфигурация, env vars, установка |
+| [bible/06-backup.md](bible/06-backup.md) | Резервное копирование |
+| [bible/07-dev.md](bible/07-dev.md) | Команды разработки, стиль кода, guardrails |
 
-## Технологии
+---
 
-- **Backend:** Go 1.22+, Gin, GORM
-- **Frontend:** HTML, Tailwind CSS, htmx
-- **Database:** SQLite (runtime/local-first), MariaDB 11+ (sync + server admin)
-- **Export:** excelize (XLSX), encoding/csv
-
-## Требования
-
-- Go 1.22 или выше
-- MariaDB 11.x (или MySQL 8.x)
-- ~50 MB дискового пространства
-
-## Установка
-
-### 1. Клонирование репозитория
-
-```bash
-git clone https://github.com/your-company/quoteforge.git
-cd quoteforge
-```
-
-### 2. Настройка runtime-конфига (опционально)
-
-`config.yaml` создаётся автоматически при первом старте в той же user-state папке, где находится `qfs.db`.
-Если найден старый формат, приложение автоматически мигрирует файл в актуальный runtime-формат
-(оставляя только используемые секции `server` и `logging`).
-
-При необходимости можно создать/отредактировать файл вручную:
-
-```yaml
-server:
-  host: "0.0.0.0"
-  port: 8080
-  mode: "release"
-
-logging:
-  level: "info"
-  format: "json"
-  output: "stdout"
-```
-
-### 3. Миграции базы данных
+## Быстрый старт
 
 ```bash
+# Применить миграции
 go run ./cmd/qfs -migrate
-```
 
-### Мигратор OPS -> проекты (preview/apply)
-
-Переносит квоты, чьи названия начинаются с `OPS-xxxx` (где `x` — цифра), в проект `OPS-xxxx`.
-Если проекта нет, он будет создан; если архивный — реактивирован.
-
-Сначала всегда смотрите preview:
-
-```bash
-go run ./cmd/migrate_ops_projects
-```
-
-Применение изменений:
-
-```bash
-go run ./cmd/migrate_ops_projects -apply
-```
-
-Без интерактивного подтверждения:
-
-```bash
-go run ./cmd/migrate_ops_projects -apply -yes
-```
-
-### Минимальные права БД для пользователя квотаций
-
-Если нужен пользователь, который может работать с конфигурациями, но не может создавать/удалять прайслисты:
-
-```sql
--- 1) Создать пользователя (если его ещё нет)
-CREATE USER IF NOT EXISTS 'quote_user'@'%' IDENTIFIED BY 'DB_PASSWORD_PLACEHOLDER';
-
--- 2) Если пользователь уже существовал, принудительно обновить пароль
-ALTER USER 'quote_user'@'%' IDENTIFIED BY 'DB_PASSWORD_PLACEHOLDER';
-
--- 3) (Опционально, но рекомендуется) удалить дубли пользователя с другими host,
--- чтобы не возникало конфликтов вида user@localhost vs user@'%'
-DROP USER IF EXISTS 'quote_user'@'localhost';
-DROP USER IF EXISTS 'quote_user'@'127.0.0.1';
-DROP USER IF EXISTS 'quote_user'@'::1';
-
--- 4) Сбросить лишние права
-REVOKE ALL PRIVILEGES, GRANT OPTION FROM 'quote_user'@'%';
-
--- 5) Чтение данных для конфигуратора и синка
-GRANT SELECT ON RFQ_LOG.lot TO 'quote_user'@'%';
-GRANT SELECT ON RFQ_LOG.qt_lot_metadata TO 'quote_user'@'%';
-GRANT SELECT ON RFQ_LOG.qt_categories TO 'quote_user'@'%';
-GRANT SELECT ON RFQ_LOG.qt_pricelists TO 'quote_user'@'%';
-GRANT SELECT ON RFQ_LOG.qt_pricelist_items TO 'quote_user'@'%';
-
--- 6) Работа с конфигурациями
-GRANT SELECT, INSERT, UPDATE ON RFQ_LOG.qt_configurations TO 'quote_user'@'%';
-
-FLUSH PRIVILEGES;
-
-SHOW GRANTS FOR 'quote_user'@'%';
-SHOW CREATE USER 'quote_user'@'%';
-```
-
-Полный набор прав для пользователя квотаций:
-
-```sql
-GRANT USAGE ON *.* TO 'quote_user'@'%' IDENTIFIED BY 'DB_PASSWORD_PLACEHOLDER';
-GRANT SELECT ON RFQ_LOG.lot TO 'quote_user'@'%';
-GRANT SELECT ON RFQ_LOG.qt_lot_metadata TO 'quote_user'@'%';
-GRANT SELECT ON RFQ_LOG.qt_categories TO 'quote_user'@'%';
-GRANT SELECT ON RFQ_LOG.qt_pricelists TO 'quote_user'@'%';
-GRANT SELECT ON RFQ_LOG.qt_pricelist_items TO 'quote_user'@'%';
-GRANT SELECT, INSERT, UPDATE ON RFQ_LOG.qt_configurations TO 'quote_user'@'%';
-```
-
-Важно:
-- не выдавайте `INSERT/UPDATE/DELETE` на `qt_pricelists` и `qt_pricelist_items`, если пользователь не должен управлять прайслистами;
-- если видите ошибку `Access denied for user ...@'<ip>'`, проверьте, что не осталось других записей `quote_user@host` кроме `quote_user@'%'`;
-- после смены DB-настроек через `/setup` приложение перезапускается автоматически и подхватывает нового пользователя.
-
-### 4. Импорт метаданных компонентов
-
-```bash
-go run ./cmd/importer
-```
-
-### 5. Запуск
-
-```bash
-# Development
+# Запустить
 go run ./cmd/qfs
-
-# Production (with Makefile - recommended)
-make build-release    # Builds with version info
-./bin/qfs -version    # Check version
-
-# Production (manual)
-VERSION=$(git describe --tags --always --dirty)
-CGO_ENABLED=0 go build -ldflags="-s -w -X main.Version=$VERSION" -o bin/qfs ./cmd/qfs
-./bin/qfs -version
+# или
+make run
 ```
 
-**Makefile команды:**
-```bash
-make build-release   # Оптимизированная сборка с версией
-make build-all       # Сборка для всех платформ (Linux, macOS, Windows)
-make build-windows   # Только для Windows
-make run             # Запуск dev сервера
-make test            # Запуск тестов
-make clean           # Очистка bin/
-make help            # Показать все команды
-```
-
-Приложение будет доступно по адресу: http://localhost:8080
-
-### Локальная SQLite база (state)
-
-Локальная база приложения хранится в профиле пользователя и не зависит от расположения бинарника.
-Имя файла: `qfs.db`.
-
-- macOS: `~/Library/Application Support/QuoteForge/qfs.db`
-- Linux: `$XDG_STATE_HOME/quoteforge/qfs.db` (или `~/.local/state/quoteforge/qfs.db`)
-- Windows: `%LOCALAPPDATA%\\QuoteForge\\qfs.db`
-
-Можно переопределить путь через `-localdb` или переменную окружения `QFS_DB_PATH`.
-
-#### Sync readiness guard
-
-Перед `push/pull` выполняется preflight-проверка:
-- доступен ли сервер (MariaDB);
-- можно ли проверить и применить централизованные миграции локальной БД;
-- подходит ли версия приложения под `min_app_version` миграций.
-
-Если проверка не пройдена:
-- локальная работа (CRUD) продолжается;
-- sync API возвращает `423 Locked` с `reason_code` и `reason_text`;
-- в UI показывается красный индикатор и причина блокировки в модалке синхронизации.
-
-#### Схема потоков данных синхронизации
-
-```text
-                          [ SERVER / MariaDB ]
-                     ┌───────────────────────────┐
-                     │ qt_projects               │
-                     │ qt_configurations         │
-                     │ qt_pricelists             │
-                     │ qt_pricelist_items        │
-                     │ qt_pricelist_sync_status  │
-                     └─────────────┬─────────────┘
-                                   │
-                    pull (projects/configs/pricelists)
-                                   │
-                ┌──────────────────┴──────────────────┐
-                │                                     │
-      [ CLIENT A / local SQLite ]           [ CLIENT B / local SQLite ]
-   ┌───────────────────────────────┐       ┌───────────────────────────────┐
-   │ local_projects                │       │ local_projects                │
-   │ local_configurations          │       │ local_configurations          │
-   │ local_pricelists              │       │ local_pricelists              │
-   │ local_pricelist_items         │       │ local_pricelist_items         │
-   │ pending_changes (proj/config) │       │ pending_changes (proj/config) │
-   └───────────────┬───────────────┘       └───────────────┬───────────────┘
-                   │                                       │
-      push (projects/configurations only)     push (projects/configurations only)
-                   │                                       │
-                   └──────────────────┬────────────────────┘
-                                      │
-                              [ SERVER / MariaDB ]
-```
-
-По сущностям:
-- Конфигурации: `Client <-> Server <-> Other Clients`
-- Проекты: `Client <-> Server <-> Other Clients`
-- Прайслисты: `Server -> Clients only` (локальный push отсутствует)
-- Локальная очистка прайслистов на клиенте: удаляются записи, которых нет на сервере и которые не используются активными локальными конфигурациями
-
-### Версионность конфигураций (local-first)
-
-Для `local_configurations` используется append-only versioning через полные snapshot-версии:
-
-- таблица: `local_configuration_versions`
-- для каждого изменения создаётся новая версия (`version_no = max + 1`)
-- `local_configurations.current_version_id` указывает на активную версию
-- старые версии не изменяются и не удаляются в обычном потоке
-- rollback не "перематывает" историю, а создаёт новую версию из выбранного snapshot
-
-При backfill (миграция `006_add_local_configuration_versions.sql`) для существующих конфигураций создаётся `v1` и проставляется `current_version_id`.
-
-#### Rollback
-
-Rollback выполняется API-методом:
+Приложение: http://localhost:8080 → откроется `/setup` для настройки подключения к MariaDB.
 
 ```bash
-POST /api/configs/:uuid/rollback
-{
-  "target_version": 3,
-  "note": "optional"
-}
+# Сборка
+make build-release
+
+# Проверка
+go build ./cmd/qfs && go vet ./...
 ```
 
-Результат:
-- создаётся новая версия `vN` с `data` из целевой версии
-- `change_note = "rollback to v{target_version}"` (+ note, если передан)
-- `current_version_id` переключается на новую версию
-- конфигурация уходит в `sync_status = pending`
+---
 
-### Локальный config.yaml
+## Releases & Changelog
 
-По умолчанию `qfs` ищет `config.yaml` в той же user-state папке, где лежит `qfs.db` (а не рядом с бинарником).
-Если файла нет, он создаётся автоматически. Если формат устарел, он автоматически мигрируется в runtime-формат (`server` + `logging`).
-Можно переопределить путь через `-config` или `QFS_CONFIG_PATH`.
+Changelog между версиями: `releases/memory/v{major}.{minor}.{patch}.md`
 
-## Docker
-
-```bash
-# Сборка образа
-docker build -t quoteforge .
-
-# Запуск с docker-compose
-docker-compose up -d
-```
-
-## Структура проекта
-
-```
-quoteforge/
-├── cmd/
-│   ├── server/main.go           # Main HTTP server
-│   └── importer/main.go         # Import metadata from lot table
-├── internal/
-│   ├── config/          # Конфигурация
-│   ├── models/          # GORM модели
-│   ├── handlers/        # HTTP handlers
-│   ├── services/        # Бизнес-логика
-│   ├── middleware/      # Auth, CORS, etc.
-│   └── repository/      # Работа с БД
-├── web/
-│   ├── templates/       # HTML шаблоны
-│   └── static/          # CSS, JS, изображения
-├── migrations/          # SQL миграции
-├── config.example.yaml  # Пример конфигурации
-└── go.mod
-```
-
-## Роли пользователей
-
-| Роль | Описание |
-|------|----------|
-| `viewer` | Просмотр, создание квот, экспорт |
-| `editor` | + сохранение конфигураций |
-| `pricing_admin` | + управление ценами и алертами |
-| `admin` | Полный доступ, управление пользователями |
-
-## API
-
-Документация API доступна по адресу `/api/docs` (в разработке).
-
-Основные endpoints:
-
-```
-POST /api/auth/login          # Авторизация
-GET  /api/components          # Список компонентов
-POST /api/quote/calculate     # Расчёт цены
-POST /api/export/xlsx         # Экспорт в Excel
-GET  /api/configs             # Сохранённые конфигурации
-GET  /api/configs/:uuid/versions            # Список версий конфигурации
-GET  /api/configs/:uuid/versions/:version   # Получить конкретную версию
-POST /api/configs/:uuid/rollback            # Rollback на указанную версию
-POST /api/configs/:uuid/reactivate          # Вернуть архивную конфигурацию в активные
-GET  /api/sync/readiness                   # Статус readiness guard (ready|blocked|unknown)
-GET  /api/sync/status                      # Сводный статус синхронизации
-GET  /api/sync/info                        # Данные для модалки синхронизации
-POST /api/sync/push                        # Push pending changes (423, если blocked)
-POST /api/sync/all                         # Full sync push+pull (423, если blocked)
-POST /api/sync/components                  # Pull components (423, если blocked)
-POST /api/sync/pricelists                  # Pull pricelists (423, если blocked)
-```
-
-### Краткая карта sync API
-
-| Endpoint | Назначение | Поток |
-|----------|------------|-------|
-| `POST /api/sync/push` | Отправить локальные pending-изменения | `SQLite -> MariaDB` |
-| `POST /api/sync/components` | Подтянуть справочник компонентов | `MariaDB -> SQLite` |
-| `POST /api/sync/pricelists` | Подтянуть прайслисты и позиции | `MariaDB -> SQLite` |
-| `POST /api/sync/all` | Полный цикл: push + pull + импорт проектов/конфигураций | `двунаправленно` |
-| `GET /api/sync/readiness` | Статус preflight/readiness | `read-only` |
-| `GET /api/sync/status` / `GET /api/sync/info` | Сводка статуса и данных синхронизации | `read-only` |
-
-#### Sync payload для versioning
-
-События в `pending_changes` для конфигураций содержат:
-- `configuration_uuid`
-- `operation` (`create` / `update` / `rollback`)
-- `current_version_id` и `current_version_no`
-- `snapshot` (текущее состояние конфигурации)
-- `idempotency_key` и `conflict_policy` (`last_write_wins`)
-
-Это позволяет push-слою отправлять на сервер актуальное состояние и готовит основу для будущего conflict resolution.
-
-## Разработка
-
-```bash
-# Запуск в режиме разработки (hot reload)
-go run ./cmd/qfs
-
-# Запуск тестов
-go test ./...
-
-# Сборка для Linux
-CGO_ENABLED=0 go build -ldflags="-s -w" -o bin/qfs ./cmd/qfs
-```
-
-## Переменные окружения
-
-| Переменная | Описание | По умолчанию |
-|------------|----------|--------------|
-| `QF_DB_HOST` | Хост базы данных | localhost |
-| `QF_DB_PORT` | Порт базы данных | 3306 |
-| `QF_DB_NAME` | Имя базы данных | RFQ_LOG |
-| `QF_DB_USER` | Пользователь БД | — |
-| `QF_DB_PASSWORD` | Пароль БД | — |
-| `QF_JWT_SECRET` | Секрет для JWT | — |
-| `QF_SERVER_PORT` | Порт сервера | 8080 |
-| `QFS_DB_PATH` | Полный путь к локальной SQLite БД | OS-specific user state dir |
-| `QFS_STATE_DIR` | Каталог state (если `QFS_DB_PATH` не задан) | OS-specific user state dir |
-| `QFS_CONFIG_PATH` | Полный путь к `config.yaml` | OS-specific user state dir |
-
-## Интеграция с существующей БД
-
-QuoteForge интегрируется с существующей базой RFQ_LOG:
-
-- `lot` — справочник компонентов (только чтение)
-- `lot_log` — история цен от поставщиков (только чтение)
-- `supplier` — справочник поставщиков (только чтение)
-
-Новые таблицы QuoteForge имеют префикс `qt_`:
-
-- `qt_users` — пользователи приложения
-- `qt_lot_metadata` — расширенные данные компонентов
-- `qt_configurations` — сохранённые конфигурации
-- `qt_pricing_alerts` — алерты для администраторов
+---
 
 ## Поддержка
 
-По вопросам работы приложения обращайтесь:
 - Email: mike@mchus.pro
 - Internal: @mchus
 
 ## Лицензия
 
-Данное программное обеспечение является собственностью компании и предназначено исключительно для внутреннего использования. Распространение, копирование или модификация без письменного разрешения запрещены.
-
-См. файл [LICENSE](LICENSE) для подробностей.
+Собственность компании, только для внутреннего использования. См. [LICENSE](LICENSE).

bible/01-overview.md

@@ -0,0 +1,119 @@
+# 01 — Product Overview
+
+## What is QuoteForge
+
+A corporate server configuration and quotation tool.
+Operates in **strict local-first** mode: all user operations go through local SQLite; MariaDB is used only for synchronization.
+
+---
+
+## Features
+
+### For Users
+- Mobile-first interface — works comfortably on phones and tablets
+- Server configurator — step-by-step component selection
+- Automatic price calculation — based on pricelists from local cache
+- CSV export — ready-to-use specifications for clients
+- Configuration history — versioned snapshots with rollback support
+- Full offline operation — continue working without network, sync later
+- Guarded synchronization — sync is blocked by preflight check if local schema is not ready
+
+### User Roles
+
+| Role | Permissions |
+|------|-------------|
+| `viewer` | View, create quotes, export |
+| `editor` | + save configurations |
+| `pricing_admin` | + manage prices and alerts |
+| `admin` | Full access, user management |
+
+### Price Freshness Indicators
+
+| Color | Status | Condition |
+|-------|--------|-----------|
+| Green | Fresh | < 30 days, ≥ 3 sources |
+| Yellow | Normal | 30–60 days |
+| Orange | Aging | 60–90 days |
+| Red | Stale | > 90 days or no data |
+
+---
+
+## Tech Stack
+
+| Layer | Stack |
+|-------|-------|
+| Backend | Go 1.22+, Gin, GORM |
+| Frontend | HTML, Tailwind CSS, htmx |
+| Local DB | SQLite (`qfs.db`) |
+| Server DB | MariaDB 11+ (sync + server admin) |
+| Export | encoding/csv, excelize (XLSX) |
+
+---
+
+## Product Scope
+
+**In scope:**
+- Component configurator and quotation calculation
+- Projects and configurations
+- Read-only pricelist viewing from local cache
+- Sync (pull components/pricelists, push local changes)
+
+**Out of scope (removed intentionally — do not restore):**
+- Admin pricing UI/API
+- Stock import
+- Alerts
+- Cron/importer utilities
+
+---
+
+## Repository Structure
+
+```
+quoteforge/
+├── cmd/
+│   ├── qfs/main.go               # HTTP server entry point
+│   ├── migrate/                  # Migration tool
+│   └── migrate_ops_projects/     # OPS project migrator
+├── internal/
+│   ├── appmeta/                  # App version metadata
+│   ├── appstate/                 # State management, backup
+│   ├── article/                  # Article generation
+│   ├── config/                   # Config parsing
+│   ├── db/                       # DB initialization
+│   ├── handlers/                 # HTTP handlers
+│   ├── localdb/                  # SQLite layer
+│   ├── lotmatch/                 # Lot matching logic
+│   ├── middleware/               # Auth, CORS, etc.
+│   ├── models/                   # GORM models
+│   ├── repository/               # Repository layer
+│   └── services/                 # Business logic
+├── web/
+│   ├── templates/                # HTML templates + partials
+│   └── static/                   # CSS, JS, assets
+├── migrations/                   # SQL migration files (30+)
+├── bible/                        # Architectural documentation (this section)
+├── releases/memory/              # Per-version changelogs
+├── config.example.yaml           # Config template (the only one in repo)
+└── go.mod
+```
+
+---
+
+## Integration with Existing DB
+
+QuoteForge integrates with the existing `RFQ_LOG` database:
+
+**Read-only:**
+- `lot` — component catalog
+- `qt_lot_metadata` — extended component data
+- `qt_categories` — categories
+- `qt_pricelists`, `qt_pricelist_items` — pricelists
+
+**Read + Write:**
+- `qt_configurations` — configurations
+- `qt_projects` — projects
+
+**Sync service tables:**
+- `qt_client_local_migrations` — migration catalog (SELECT only)
+- `qt_client_schema_state` — applied migrations state
+- `qt_pricelist_sync_status` — pricelist sync status

bible/02-architecture.md

@@ -0,0 +1,205 @@
+# 02 — Architecture
+
+## Local-First Principle
+
+**SQLite** is the single source of truth for the user.
+**MariaDB** is a sync server only — it never blocks local operations.
+
+```
+User
+  │
+  ▼
+SQLite (qfs.db)          ← all CRUD operations go here
+  │
+  │ background sync (every 5 min)
+  ▼
+MariaDB (RFQ_LOG)        ← pull/push only
+```
+
+**Rules:**
+- All CRUD operations go through SQLite only
+- If MariaDB is unavailable → local work continues without restrictions
+- Changes are queued in `pending_changes` and pushed on next sync
+
+---
+
+## Synchronization
+
+### Data Flow Diagram
+
+```
+                      [ SERVER / MariaDB ]
+                 ┌───────────────────────────┐
+                 │ qt_projects               │
+                 │ qt_configurations         │
+                 │ qt_pricelists             │
+                 │ qt_pricelist_items        │
+                 │ qt_pricelist_sync_status  │
+                 └─────────────┬─────────────┘
+                               │
+              pull (projects/configs/pricelists)
+                               │
+          ┌────────────────────┴────────────────────┐
+          │                                         │
+[ CLIENT A / SQLite ]                   [ CLIENT B / SQLite ]
+local_projects                          local_projects
+local_configurations                    local_configurations
+local_pricelists                        local_pricelists
+local_pricelist_items                   local_pricelist_items
+pending_changes                         pending_changes
+          │                                         │
+          └────── push (projects/configs only) ─────┘
+                               │
+                      [ SERVER / MariaDB ]
+```
+
+### Sync Direction by Entity
+
+| Entity | Direction |
+|--------|-----------|
+| Configurations | Client ↔ Server ↔ Other Clients |
+| Projects | Client ↔ Server ↔ Other Clients |
+| Pricelists | Server → Clients only (no push) |
+| Components | Server → Clients only |
+
+Local pricelists not present on the server and not referenced by active configurations are deleted automatically on sync.
+
+### Soft Deletes (Archive Pattern)
+
+Configurations and projects are **never hard-deleted**. Deletion is archive via `is_active = false`.
+
+- `DELETE /api/configs/:uuid` → sets `is_active = false` (archived); can be restored via `reactivate`
+- `DELETE /api/projects/:uuid` → archives a project **variant** only (`variant` field must be non-empty); main projects cannot be deleted via this endpoint
+
+## Sync Readiness Guard
+
+Before every push/pull, a preflight check runs:
+1. Is the server (MariaDB) reachable?
+2. Can centralized local DB migrations be applied?
+3. Does the application version satisfy `min_app_version` of pending migrations?
+
+**If the check fails:**
+- Local CRUD continues without restriction
+- Sync API returns `423 Locked` with `reason_code` and `reason_text`
+- UI shows a red indicator with the block reason
+
+---
+
+## Pricing
+
+### Principle
+
+**Prices come only from `local_pricelist_items`.**
+Components (`local_components`) are metadata-only — they contain no pricing information.
+
+### Lookup Pattern
+
+```go
+// Look up a price for a line item
+price, found := s.lookupPriceByPricelistID(pricelistID, lotName)
+if found && price > 0 {
+    // use price
+}
+
+// Inside lookupPriceByPricelistID:
+localPL, err := s.localDB.GetLocalPricelistByServerID(pricelistID)
+price, err := s.localDB.GetLocalPriceForLot(localPL.ID, lotName)
+```
+
+### Multi-Level Pricelists
+
+A configuration can reference up to three pricelists simultaneously:
+
+| Field | Purpose |
+|-------|---------|
+| `pricelist_id` | Primary (estimate) |
+| `warehouse_pricelist_id` | Warehouse pricing |
+| `competitor_pricelist_id` | Competitor pricing |
+
+Pricelist sources: `estimate` | `warehouse` | `competitor`
+
+### "Auto" Pricelist Selection
+
+Configurator supports explicit and automatic selection per source (`estimate`, `warehouse`, `competitor`):
+
+- **Explicit mode:** concrete `pricelist_id` is set by user in settings.
+- **Auto mode:** client sends no explicit ID for that source; backend resolves the current latest active pricelist.
+
+`auto` must stay `auto` after price-level refresh and after manual "refresh prices":
+- resolved IDs are runtime-only and must not overwrite user's mode;
+- switching to explicit selection must clear runtime auto resolution for that source.
+
+### Latest Pricelist Resolution Rules
+
+For both server (`qt_pricelists`) and local cache (`local_pricelists`), "latest by source" is resolved with:
+
+1. only pricelists that have at least one item (`EXISTS ...pricelist_items`);
+2. deterministic sort: `created_at DESC, id DESC`.
+
+This prevents selecting empty/incomplete snapshots and removes nondeterministic ties.
+
+---
+
+## Configuration Versioning
+
+### Principle
+
+Append-only: every save creates an immutable snapshot in `local_configuration_versions`.
+
+```
+local_configurations
+  └── current_version_id ──► local_configuration_versions (v3)  ← active
+                              local_configuration_versions (v2)
+                              local_configuration_versions (v1)
+```
+
+- `version_no = max + 1` on every save
+- Old versions are never modified or deleted in normal flow
+- Rollback does **not** rewind history — it creates a **new** version from the snapshot
+
+### Rollback
+
+```bash
+POST /api/configs/:uuid/rollback
+{
+  "target_version": 3,
+  "note": "optional comment"
+}
+```
+
+Result:
+- A new version `vN` is created with `data` from the target version
+- `change_note = "rollback to v{target_version}"` (+ note if provided)
+- `current_version_id` is switched to the new version
+- Configuration moves to `sync_status = pending`
+
+### Sync Status Flow
+
+```
+local → pending → synced
+```
+
+---
+
+## Sync Payload for Versioning
+
+Events in `pending_changes` for configurations contain:
+
+| Field | Description |
+|-------|-------------|
+| `configuration_uuid` | Identifier |
+| `operation` | `create` / `update` / `rollback` |
+| `current_version_id` | Active version ID |
+| `current_version_no` | Version number |
+| `snapshot` | Current configuration state |
+| `idempotency_key` | For idempotent push |
+| `conflict_policy` | `last_write_wins` |
+
+---
+
+## Background Processes
+
+| Process | Interval | What it does |
+|---------|----------|--------------|
+| Sync worker | 5 min | push pending + pull all |
+| Backup scheduler | configurable (`backup.time`) | creates ZIP archives |

bible/03-database.md

@@ -0,0 +1,181 @@
+# 03 — Database
+
+## SQLite (local, client-side)
+
+File: `qfs.db` in the user-state directory (see [05-config.md](05-config.md)).
+
+### Tables
+
+#### Components and Reference Data
+
+| Table | Purpose | Key Fields |
+|-------|---------|------------|
+| `local_components` | Component metadata (NO prices) | `lot_name` (PK), `lot_description`, `category`, `model` |
+| `connection_settings` | MariaDB connection settings | key-value store |
+| `app_settings` | Application settings | `key` (PK), `value`, `updated_at` |
+
+#### Pricelists
+
+| Table | Purpose | Key Fields |
+|-------|---------|------------|
+| `local_pricelists` | Pricelist headers | `id`, `server_id` (unique), `source`, `version`, `created_at` |
+| `local_pricelist_items` | Pricelist line items ← **sole source of prices** | `id`, `pricelist_id` (FK), `lot_name`, `price`, `lot_category` |
+
+#### Configurations and Projects
+
+| Table | Purpose | Key Fields |
+|-------|---------|------------|
+| `local_configurations` | Saved configurations | `id`, `uuid` (unique), `items` (JSON), `pricelist_id`, `warehouse_pricelist_id`, `competitor_pricelist_id`, `current_version_id`, `sync_status` |
+| `local_configuration_versions` | Immutable snapshots (revisions) | `id`, `configuration_id` (FK), `version_no`, `data` (JSON), `change_note`, `created_at` |
+| `local_projects` | Projects | `id`, `uuid` (unique), `name`, `code`, `sync_status` |
+
+#### Sync
+
+| Table | Purpose |
+|-------|---------|
+| `pending_changes` | Queue of changes to push to MariaDB |
+| `local_schema_migrations` | Applied migrations (idempotency guard) |
+
+---
+
+### Key SQLite Indexes
+
+```sql
+-- Pricelists
+INDEX local_pricelist_items(pricelist_id)
+UNIQUE INDEX local_pricelists(server_id)
+INDEX local_pricelists(source, created_at)   -- used for "latest by source" queries
+-- latest-by-source runtime query also applies deterministic tie-break by id DESC
+
+-- Configurations
+INDEX local_configurations(pricelist_id)
+INDEX local_configurations(warehouse_pricelist_id)
+INDEX local_configurations(competitor_pricelist_id)
+UNIQUE INDEX local_configurations(uuid)
+```
+
+---
+
+### `items` JSON Structure in Configurations
+
+```json
+{
+  "items": [
+    {
+      "lot_name": "CPU_AMD_9654",
+      "quantity": 2,
+      "unit_price": 123456.78,
+      "section": "Processors"
+    }
+  ]
+}
+```
+
+Prices are stored inside the `items` JSON field and refreshed from the pricelist on configuration refresh.
+
+---
+
+## MariaDB (server-side, sync-only)
+
+Database: `RFQ_LOG`
+
+### Tables and Permissions
+
+| Table | Purpose | Permissions |
+|-------|---------|-------------|
+| `lot` | Component catalog | SELECT |
+| `qt_lot_metadata` | Extended component data | SELECT |
+| `qt_categories` | Component categories | SELECT |
+| `qt_pricelists` | Pricelists | SELECT |
+| `qt_pricelist_items` | Pricelist line items | SELECT |
+| `lot_partnumbers` | Partnumber → lot mapping (pricelist enrichment) | SELECT |
+| `stock_log` | Latest stock qty by partnumber (pricelist enrichment) | SELECT |
+| `qt_configurations` | Saved configurations | SELECT, INSERT, UPDATE |
+| `qt_projects` | Projects | SELECT, INSERT, UPDATE |
+| `qt_client_local_migrations` | Migration catalog | SELECT only |
+| `qt_client_schema_state` | Applied migrations state | SELECT, INSERT, UPDATE |
+| `qt_pricelist_sync_status` | Pricelist sync status | SELECT, INSERT, UPDATE |
+
+### Grant Permissions to Existing User
+
+```sql
+GRANT SELECT ON RFQ_LOG.lot TO '<DB_USER>'@'%';
+GRANT SELECT ON RFQ_LOG.qt_lot_metadata TO '<DB_USER>'@'%';
+GRANT SELECT ON RFQ_LOG.qt_categories TO '<DB_USER>'@'%';
+GRANT SELECT ON RFQ_LOG.qt_pricelists TO '<DB_USER>'@'%';
+GRANT SELECT ON RFQ_LOG.qt_pricelist_items TO '<DB_USER>'@'%';
+GRANT SELECT ON RFQ_LOG.lot_partnumbers TO '<DB_USER>'@'%';
+GRANT SELECT ON RFQ_LOG.stock_log TO '<DB_USER>'@'%';
+
+GRANT SELECT, INSERT, UPDATE ON RFQ_LOG.qt_configurations TO '<DB_USER>'@'%';
+GRANT SELECT, INSERT, UPDATE ON RFQ_LOG.qt_projects TO '<DB_USER>'@'%';
+
+GRANT SELECT ON RFQ_LOG.qt_client_local_migrations TO '<DB_USER>'@'%';
+GRANT SELECT, INSERT, UPDATE ON RFQ_LOG.qt_client_schema_state TO '<DB_USER>'@'%';
+GRANT SELECT, INSERT, UPDATE ON RFQ_LOG.qt_pricelist_sync_status TO '<DB_USER>'@'%';
+
+FLUSH PRIVILEGES;
+```
+
+### Create a New User
+
+```sql
+CREATE USER IF NOT EXISTS 'quote_user'@'%' IDENTIFIED BY '<DB_PASSWORD>';
+
+GRANT SELECT ON RFQ_LOG.lot TO 'quote_user'@'%';
+GRANT SELECT ON RFQ_LOG.qt_lot_metadata TO 'quote_user'@'%';
+GRANT SELECT ON RFQ_LOG.qt_categories TO 'quote_user'@'%';
+GRANT SELECT ON RFQ_LOG.qt_pricelists TO 'quote_user'@'%';
+GRANT SELECT ON RFQ_LOG.qt_pricelist_items TO 'quote_user'@'%';
+GRANT SELECT ON RFQ_LOG.lot_partnumbers TO 'quote_user'@'%';
+GRANT SELECT ON RFQ_LOG.stock_log TO 'quote_user'@'%';
+GRANT SELECT, INSERT, UPDATE ON RFQ_LOG.qt_configurations TO 'quote_user'@'%';
+GRANT SELECT, INSERT, UPDATE ON RFQ_LOG.qt_projects TO 'quote_user'@'%';
+GRANT SELECT ON RFQ_LOG.qt_client_local_migrations TO 'quote_user'@'%';
+GRANT SELECT, INSERT, UPDATE ON RFQ_LOG.qt_client_schema_state TO 'quote_user'@'%';
+GRANT SELECT, INSERT, UPDATE ON RFQ_LOG.qt_pricelist_sync_status TO 'quote_user'@'%';
+
+FLUSH PRIVILEGES;
+SHOW GRANTS FOR 'quote_user'@'%';
+```
+
+**Note:** If pricelists sync but show `0` positions (or logs contain `enriching pricelist items with stock` + `SELECT denied`), verify `SELECT` on `lot_partnumbers` and `stock_log` in addition to `qt_pricelist_items`.
+
+**Note:** If you see `Access denied for user ...@'<ip>'`, check for conflicting user entries (user@localhost vs user@'%').
+
+---
+
+## Migrations
+
+### SQLite Migrations (local)
+
+- Stored in `migrations/` (SQL files)
+- Applied via `-migrate` flag or automatically on first run
+- Idempotent: checked by `id` in `local_schema_migrations`
+- Already-applied migrations are skipped
+
+```bash
+go run ./cmd/qfs -migrate
+```
+
+### Centralized Migrations (server-side)
+
+- Stored in `qt_client_local_migrations` (MariaDB)
+- Applied automatically during sync readiness check
+- `min_app_version` — minimum app version required for the migration
+
+---
+
+## DB Debugging
+
+```bash
+# Inspect schema
+sqlite3 ~/.local/state/quoteforge/qfs.db ".schema local_components"
+sqlite3 ~/.local/state/quoteforge/qfs.db ".schema local_configurations"
+
+# Check pricelist item count
+sqlite3 ~/.local/state/quoteforge/qfs.db "SELECT COUNT(*) FROM local_pricelist_items"
+
+# Check pending sync queue
+sqlite3 ~/.local/state/quoteforge/qfs.db "SELECT COUNT(*) FROM pending_changes"
+```

bible/04-api.md

@@ -0,0 +1,127 @@
+# 04 — API and Web Routes
+
+## API Endpoints
+
+### Setup
+
+| Method | Endpoint | Purpose |
+|--------|----------|---------|
+| GET | `/setup` | Initial setup page |
+| POST | `/setup` | Save connection settings |
+| POST | `/setup/test` | Test MariaDB connection |
+| GET | `/setup/status` | Setup status |
+
+### Components
+
+| Method | Endpoint | Purpose |
+|--------|----------|---------|
+| GET | `/api/components` | List components (metadata only) |
+| GET | `/api/components/:lot_name` | Component by lot_name |
+| GET | `/api/categories` | List categories |
+
+### Quote
+
+| Method | Endpoint | Purpose |
+|--------|----------|---------|
+| POST | `/api/quote/validate` | Validate line items |
+| POST | `/api/quote/calculate` | Calculate quote (prices from pricelist) |
+| POST | `/api/quote/price-levels` | Prices by level (estimate/warehouse/competitor) |
+
+### Pricelists (read-only)
+
+| Method | Endpoint | Purpose |
+|--------|----------|---------|
+| GET | `/api/pricelists` | List pricelists (`source`, `active_only`, pagination) |
+| GET | `/api/pricelists/latest` | Latest pricelist by source |
+| GET | `/api/pricelists/:id` | Pricelist by ID |
+| GET | `/api/pricelists/:id/items` | Pricelist line items |
+| GET | `/api/pricelists/:id/lots` | Lot names in pricelist |
+
+`GET /api/pricelists?active_only=true` returns only pricelists that have synced items (`item_count > 0`).
+
+### Configurations
+
+| Method | Endpoint | Purpose |
+|--------|----------|---------|
+| GET | `/api/configs` | List configurations |
+| POST | `/api/configs` | Create configuration |
+| GET | `/api/configs/:uuid` | Get configuration |
+| PUT | `/api/configs/:uuid` | Update configuration |
+| DELETE | `/api/configs/:uuid` | Archive configuration |
+| POST | `/api/configs/:uuid/refresh-prices` | Refresh prices from pricelist |
+| POST | `/api/configs/:uuid/clone` | Clone configuration |
+| POST | `/api/configs/:uuid/reactivate` | Restore archived configuration |
+| POST | `/api/configs/:uuid/rename` | Rename configuration |
+| POST | `/api/configs/preview-article` | Preview generated article for a configuration |
+| POST | `/api/configs/:uuid/rollback` | Roll back to a version |
+| GET | `/api/configs/:uuid/versions` | List versions |
+| GET | `/api/configs/:uuid/versions/:version` | Get specific version |
+
+### Projects
+
+| Method | Endpoint | Purpose |
+|--------|----------|---------|
+| GET | `/api/projects` | List projects |
+| POST | `/api/projects` | Create project |
+| GET | `/api/projects/:uuid` | Get project |
+| PUT | `/api/projects/:uuid` | Update project |
+| DELETE | `/api/projects/:uuid` | Archive project variant (soft-delete via `is_active=false`; fails if project has no `variant` set — main projects cannot be deleted this way) |
+| GET | `/api/projects/:uuid/configs` | Project configurations |
+
+### Sync
+
+| Method | Endpoint | Purpose | Flow |
+|--------|----------|---------|------|
+| GET | `/api/sync/status` | Overall sync status | read-only |
+| GET | `/api/sync/readiness` | Preflight status (ready/blocked/unknown) | read-only |
+| GET | `/api/sync/info` | Data for sync modal | read-only |
+| GET | `/api/sync/users-status` | Users status | read-only |
+| GET | `/api/sync/pending` | List pending changes | read-only |
+| GET | `/api/sync/pending/count` | Count of pending changes | read-only |
+| POST | `/api/sync/push` | Push pending → MariaDB | SQLite → MariaDB |
+| POST | `/api/sync/components` | Pull components | MariaDB → SQLite |
+| POST | `/api/sync/pricelists` | Pull pricelists | MariaDB → SQLite |
+| POST | `/api/sync/all` | Full sync: push + pull + import | bidirectional |
+| POST | `/api/sync/repair` | Repair broken entries in pending_changes | SQLite |
+
+**If sync is blocked by the readiness guard:** all POST sync methods return `423 Locked` with `reason_code` and `reason_text`.
+
+### Export
+
+| Method | Endpoint | Purpose |
+|--------|----------|---------|
+| POST | `/api/export/csv` | Export configuration to CSV |
+
+**Export filename format:** `YYYY-MM-DD (ProjectCode) ConfigName Article.csv`
+(uses `project.Code`, not `project.Name`)
+
+---
+
+## Web Routes
+
+| Route | Page |
+|-------|------|
+| `/configs` | Configuration list |
+| `/configurator` | Configurator |
+| `/configs/:uuid/revisions` | Configuration revision history |
+| `/projects` | Project list |
+| `/projects/:uuid` | Project details |
+| `/pricelists` | Pricelist list |
+| `/pricelists/:id` | Pricelist details |
+| `/setup` | Connection settings |
+
+---
+
+## Rollback API (details)
+
+```bash
+POST /api/configs/:uuid/rollback
+Content-Type: application/json
+
+{
+  "target_version": 3,
+  "note": "optional comment"
+}
+```
+
+Response: updated configuration with the new version.

bible/05-config.md

@@ -0,0 +1,129 @@
+# 05 — Configuration and Environment
+
+## File Paths
+
+### SQLite database (`qfs.db`)
+
+| OS | Default path |
+|----|-------------|
+| macOS | `~/Library/Application Support/QuoteForge/qfs.db` |
+| Linux | `$XDG_STATE_HOME/quoteforge/qfs.db` or `~/.local/state/quoteforge/qfs.db` |
+| Windows | `%LOCALAPPDATA%\QuoteForge\qfs.db` |
+
+Override: `-localdb <path>` or `QFS_DB_PATH`.
+
+### config.yaml
+
+Searched in the same user-state directory as `qfs.db` by default.
+If the file does not exist, it is created automatically.
+If the format is outdated, it is automatically migrated to the runtime format (`server` + `logging` sections only).
+
+Override: `-config <path>` or `QFS_CONFIG_PATH`.
+
+**Important:** `config.yaml` is a runtime user file — it is **not stored in the repository**.
+`config.example.yaml` is the only config template in the repo.
+
+---
+
+## config.yaml Structure
+
+```yaml
+server:
+  host: "0.0.0.0"
+  port: 8080
+  mode: "release"   # release | debug
+
+logging:
+  level: "info"     # debug | info | warn | error
+  format: "json"    # json | text
+  output: "stdout"  # stdout | stderr | /path/to/file
+
+backup:
+  time: "00:00"     # HH:MM in local time
+```
+
+---
+
+## Environment Variables
+
+| Variable | Description | Default |
+|----------|-------------|---------|
+| `QFS_DB_PATH` | Full path to SQLite DB | OS-specific user state dir |
+| `QFS_STATE_DIR` | State directory (if `QFS_DB_PATH` is not set) | OS-specific user state dir |
+| `QFS_CONFIG_PATH` | Full path to `config.yaml` | OS-specific user state dir |
+| `QFS_BACKUP_DIR` | Root directory for rotating backups | `<db dir>/backups` |
+| `QFS_BACKUP_DISABLE` | Disable automatic backups | — |
+| `QF_DB_HOST` | MariaDB host | localhost |
+| `QF_DB_PORT` | MariaDB port | 3306 |
+| `QF_DB_NAME` | Database name | RFQ_LOG |
+| `QF_DB_USER` | DB user | — |
+| `QF_DB_PASSWORD` | DB password | — |
+| `QF_JWT_SECRET` | JWT secret | — |
+| `QF_SERVER_PORT` | HTTP server port | 8080 |
+
+`QFS_BACKUP_DISABLE` accepts: `1`, `true`, `yes`.
+
+---
+
+## CLI Flags
+
+| Flag | Description |
+|------|-------------|
+| `-config <path>` | Path to config.yaml |
+| `-localdb <path>` | Path to SQLite DB |
+| `-reset-localdb` | Reset local DB (destructive!) |
+| `-migrate` | Apply pending migrations and exit |
+| `-version` | Print version and exit |
+
+---
+
+## Installation and First Run
+
+### Requirements
+- Go 1.22 or higher
+- MariaDB 11.x (or MySQL 8.x)
+- ~50 MB disk space
+
+### Steps
+
+```bash
+# 1. Clone the repository
+git clone <repo-url>
+cd quoteforge
+
+# 2. Apply migrations
+go run ./cmd/qfs -migrate
+
+# 3. Start
+go run ./cmd/qfs
+# or
+make run
+```
+
+Application is available at: http://localhost:8080
+
+On first run, `/setup` opens for configuring the MariaDB connection.
+
+### OPS Project Migrator
+
+Migrates quotes whose names start with `OPS-xxxx` (where `x` is a digit) into a project named `OPS-xxxx`.
+
+```bash
+# Preview first (always)
+go run ./cmd/migrate_ops_projects
+
+# Apply
+go run ./cmd/migrate_ops_projects -apply
+
+# Apply without interactive confirmation
+go run ./cmd/migrate_ops_projects -apply -yes
+```
+
+---
+
+## Docker
+
+```bash
+docker build -t quoteforge .
+docker-compose up -d
+```

bible/06-backup.md

@@ -0,0 +1,221 @@
+# 06 — Backup
+
+## Overview
+
+Automatic rotating ZIP backup system for local data.
+
+**What is included in each archive:**
+- SQLite DB (`qfs.db`)
+- SQLite sidecars (`qfs.db-wal`, `qfs.db-shm`) if present
+- `config.yaml` if present
+
+**Archive name format:** `qfs-backp-YYYY-MM-DD.zip`
+
+**Retention policy:**
+| Period | Keep |
+|--------|------|
+| Daily | 7 archives |
+| Weekly | 4 archives |
+| Monthly | 12 archives |
+| Yearly | 10 archives |
+
+**Directories:** `<backup root>/daily`, `/weekly`, `/monthly`, `/yearly`
+
+---
+
+## Configuration
+
+```yaml
+backup:
+  time: "00:00"   # Trigger time in local time (HH:MM format)
+```
+
+**Environment variables:**
+- `QFS_BACKUP_DIR` — backup root directory (default: `<db dir>/backups`)
+- `QFS_BACKUP_DISABLE` — disable backups (`1/true/yes`)
+
+---
+
+## Behavior
+
+- **At startup:** if no backup exists for the current period, one is created immediately
+- **Daily:** at the configured time, a new backup is created
+- **Deduplication:** prevented via a `.period.json` marker file in each period directory
+- **Rotation:** excess old archives are deleted automatically
+
+---
+
+## Implementation
+
+Module: `internal/appstate/backup.go`
+
+Main function:
+```go
+func EnsureRotatingLocalBackup(dbPath, configPath string) ([]string, error)
+```
+
+Scheduler (in `main.go`):
+```go
+func startBackupScheduler(ctx context.Context, cfg *config.Config, dbPath, configPath string)
+```
+
+### Config struct
+
+```go
+type BackupConfig struct {
+    Time string `yaml:"time"`
+}
+// Default: "00:00"
+```
+
+---
+
+## Implementation Notes
+
+- `backup.time` is in **local time** without timezone offset parsing
+- `.period.json` is the marker that prevents duplicate backups within the same period
+- Archive filenames contain only the date; uniqueness is ensured by per-period directories + the period marker
+- When changing naming or retention: update both the filename logic and the prune logic together
+
+---
+
+## Full Listing: `internal/appstate/backup.go`
+
+```go
+package appstate
+
+import (
+    "archive/zip"
+    "encoding/json"
+    "fmt"
+    "io"
+    "os"
+    "path/filepath"
+    "sort"
+    "strings"
+    "time"
+)
+
+type backupPeriod struct {
+    name      string
+    retention int
+    key       func(time.Time) string
+    date      func(time.Time) string
+}
+
+var backupPeriods = []backupPeriod{
+    {
+        name:      "daily",
+        retention: 7,
+        key:  func(t time.Time) string { return t.Format("2006-01-02") },
+        date: func(t time.Time) string { return t.Format("2006-01-02") },
+    },
+    {
+        name:      "weekly",
+        retention: 4,
+        key: func(t time.Time) string {
+            y, w := t.ISOWeek()
+            return fmt.Sprintf("%04d-W%02d", y, w)
+        },
+        date: func(t time.Time) string { return t.Format("2006-01-02") },
+    },
+    {
+        name:      "monthly",
+        retention: 12,
+        key:  func(t time.Time) string { return t.Format("2006-01") },
+        date: func(t time.Time) string { return t.Format("2006-01-02") },
+    },
+    {
+        name:      "yearly",
+        retention: 10,
+        key:  func(t time.Time) string { return t.Format("2006") },
+        date: func(t time.Time) string { return t.Format("2006-01-02") },
+    },
+}
+
+func EnsureRotatingLocalBackup(dbPath, configPath string) ([]string, error) {
+    if isBackupDisabled() || dbPath == "" {
+        return nil, nil
+    }
+    if _, err := os.Stat(dbPath); os.IsNotExist(err) {
+        return nil, nil
+    }
+    root := resolveBackupRoot(dbPath)
+    now := time.Now()
+    created := make([]string, 0)
+    for _, period := range backupPeriods {
+        newFiles, err := ensurePeriodBackup(root, period, now, dbPath, configPath)
+        if err != nil {
+            return created, err
+        }
+        created = append(created, newFiles...)
+    }
+    return created, nil
+}
+```
+
+---
+
+## Full Listing: Scheduler Hook (`main.go`)
+
+```go
+func startBackupScheduler(ctx context.Context, cfg *config.Config, dbPath, configPath string) {
+    if cfg == nil {
+        return
+    }
+    hour, minute, err := parseBackupTime(cfg.Backup.Time)
+    if err != nil {
+        slog.Warn("invalid backup time; using 00:00", "value", cfg.Backup.Time, "error", err)
+        hour, minute = 0, 0
+    }
+
+    // Startup check: create backup immediately if none exists for current periods
+    if created, backupErr := appstate.EnsureRotatingLocalBackup(dbPath, configPath); backupErr != nil {
+        slog.Error("local backup failed", "error", backupErr)
+    } else {
+        for _, path := range created {
+            slog.Info("local backup completed", "archive", path)
+        }
+    }
+
+    for {
+        next := nextBackupTime(time.Now(), hour, minute)
+        timer := time.NewTimer(time.Until(next))
+        select {
+        case <-ctx.Done():
+            timer.Stop()
+            return
+        case <-timer.C:
+            start := time.Now()
+            created, backupErr := appstate.EnsureRotatingLocalBackup(dbPath, configPath)
+            duration := time.Since(start)
+            if backupErr != nil {
+                slog.Error("local backup failed", "error", backupErr, "duration", duration)
+            } else {
+                for _, path := range created {
+                    slog.Info("local backup completed", "archive", path, "duration", duration)
+                }
+            }
+        }
+    }
+}
+
+func parseBackupTime(value string) (int, int, error) {
+    if strings.TrimSpace(value) == "" {
+        return 0, 0, fmt.Errorf("empty backup time")
+    }
+    parsed, err := time.Parse("15:04", value)
+    if err != nil {
+        return 0, 0, err
+    }
+    return parsed.Hour(), parsed.Minute(), nil
+}
+
+func nextBackupTime(now time.Time, hour, minute int) time.Time {
+    target := time.Date(now.Year(), now.Month(), now.Day(), hour, minute, 0, 0, now.Location())
+    if !now.Before(target) {
+        target = target.Add(24 * time.Hour)
+    }
+    return target
+}
+```

bible/07-dev.md

@@ -0,0 +1,136 @@
+# 07 — Development
+
+## Commands
+
+```bash
+# Run (dev)
+go run ./cmd/qfs
+make run
+
+# Build
+make build-release        # Optimized build with version info
+CGO_ENABLED=0 go build -o bin/qfs ./cmd/qfs
+
+# Cross-platform build
+make build-all            # Linux, macOS, Windows
+make build-windows        # Windows only
+
+# Verification
+go build ./cmd/qfs        # Must compile without errors
+go vet ./...              # Linter
+
+# Tests
+go test ./...
+make test
+
+# Utilities
+make install-hooks        # Git hooks (block committing secrets)
+make clean                # Clean bin/
+make help                 # All available commands
+```
+
+---
+
+## Code Style
+
+- **Formatting:** `gofmt` (mandatory)
+- **Logging:** `slog` only (structured logging)
+- **Errors:** explicit wrapping with context (`fmt.Errorf("context: %w", err)`)
+- **Style:** no unnecessary abstractions; minimum code for the task
+
+---
+
+## Guardrails
+
+### What Must Never Be Restored
+
+The following components were **intentionally removed** and must not be brought back:
+- cron jobs
+- importer utility
+- admin pricing UI/API
+- alerts
+- stock import
+
+### Configuration Files
+
+- `config.yaml` — runtime user file, **not stored in the repository**
+- `config.example.yaml` — the only config template in the repo
+
+### Sync and Local-First
+
+- Any sync changes must preserve local-first behavior
+- Local CRUD must not be blocked when MariaDB is unavailable
+
+### Formats and UI
+
+- **CSV export:** filename must use **project code** (`project.Code`), not project name
+  Format: `YYYY-MM-DD (ProjectCode) ConfigName Article.csv`
+- **Breadcrumbs UI:** names longer than 16 characters must be truncated with an ellipsis
+
+### Architecture Documentation
+
+- **Every architectural decision must be recorded in `bible/`**
+- The corresponding Bible file must be updated **in the same commit** as the code change
+- On every user-requested commit, review and update the Bible in that same commit
+
+---
+
+## Common Tasks
+
+### Add a Field to Configuration
+
+1. Add the field to `LocalConfiguration` struct (`internal/models/`)
+2. Add GORM tags for the DB column
+3. Write a SQL migration (`migrations/`)
+4. Update `ConfigurationToLocal` / `LocalToConfiguration` converters
+5. Update API handlers and services
+
+### Add a Field to Component
+
+1. Add the field to `LocalComponent` struct (`internal/models/`)
+2. Update the SQL query in `SyncComponents()`
+3. Update the `componentRow` struct to match
+4. Update converter functions
+
+### Add a Pricelist Price Lookup
+
+```go
+// Modern pattern
+price, found := s.lookupPriceByPricelistID(pricelistID, lotName)
+if found && price > 0 {
+    // use price
+}
+```
+
+---
+
+## Known Gotchas
+
+1. **`CurrentPrice` removed from components** — any code using it will fail to compile
+2. **`HasPrice` filter removed** — `component.go ListComponents` no longer supports this filter
+3. **Quote calculation:** always offline-first (SQLite); online path is separate
+4. **Items JSON:** prices are stored in the `items` field of the configuration, not fetched from components
+5. **Migrations are additive:** already-applied migrations are skipped (checked by `id` in `local_schema_migrations`)
+6. **`SyncedAt` removed:** last component sync time is now in `app_settings` (key=`last_component_sync`)
+
+---
+
+## Debugging Price Issues
+
+**Problem: quote returns no prices**
+1. Check that `pricelist_id` is set on the configuration
+2. Check that pricelist items exist: `SELECT COUNT(*) FROM local_pricelist_items`
+3. Check `lookupPriceByPricelistID()` in `quote.go`
+4. Verify the correct source is used (estimate/warehouse/competitor)
+
+**Problem: component sync not working**
+1. Components sync as metadata only — no prices
+2. Prices come via a separate pricelist sync
+3. Check `SyncComponents()` and the MariaDB query
+
+**Problem: configuration refresh does not update prices**
+1. Refresh uses the latest estimate pricelist by default
+2. Latest resolution ignores pricelists without items (`EXISTS local_pricelist_items`)
+3. Old prices in `config.items` are preserved if a line item is not found in the pricelist
+4. To force a pricelist update: set `configuration.pricelist_id`
+5. In configurator, `Авто` must remain auto-mode (runtime resolved ID must not be persisted as explicit selection)

bible/README.md

@@ -0,0 +1,55 @@
+# QuoteForge Bible — Architectural Documentation
+
+The single source of truth for architecture, schemas, and patterns.
+
+---
+
+## Table of Contents
+
+| File | Topic |
+|------|-------|
+| [01-overview.md](01-overview.md) | Product: purpose, features, tech stack, repository structure |
+| [02-architecture.md](02-architecture.md) | Architecture: local-first, sync, pricing, versioning |
+| [03-database.md](03-database.md) | DB schemas: SQLite + MariaDB, permissions, indexes |
+| [04-api.md](04-api.md) | API endpoints and web routes |
+| [05-config.md](05-config.md) | Configuration, environment variables, paths, installation |
+| [06-backup.md](06-backup.md) | Backup: implementation, rotation policy |
+| [07-dev.md](07-dev.md) | Development: commands, code style, guardrails |
+
+---
+
+## Bible Rules
+
+> **Every architectural decision must be recorded in the Bible.**
+>
+> Any change to DB schema, data access patterns, sync behavior, API contracts,
+> configuration format, or any other system-level aspect — the corresponding `bible/` file
+> **must be updated in the same commit** as the code.
+>
+> On every user-requested commit, the Bible must be reviewed and updated in that commit.
+>
+> The Bible is the single source of truth for architecture. Outdated documentation is worse than none.
+
+> **Documentation language: English.**
+>
+> All files in `bible/` are written and updated **in English only**.
+> Mixing languages is not allowed.
+
+---
+
+## Quick Reference
+
+**Where is user data stored?**
+SQLite → `~/Library/Application Support/QuoteForge/qfs.db` (macOS). MariaDB is sync-only.
+
+**How to look up a price for a line item?**
+`local_pricelist_items` → by `pricelist_id` from config + `lot_name`. Prices are **never** taken from `local_components`.
+
+**Pre-commit check?**
+`go build ./cmd/qfs && go vet ./...`
+
+**What must never be restored?**
+cron jobs, admin pricing, alerts, stock import, importer utility — all removed intentionally.
+
+**Where is the release changelog?**
+`releases/memory/v{major}.{minor}.{patch}.md`

cmd/migrate_ops_projects/main.go

@@ -163,7 +163,7 @@ func buildPlan(db *gorm.DB, fallbackOwner string) ([]migrationAction, map[string
 		}
 		for i := range projects {
 			p := projects[i]
-			existingProjects[projectKey(p.OwnerUsername, p.Name)] = &p
+			existingProjects[projectKey(p.OwnerUsername, derefString(p.Name))] = &p
 		}
 	}
 
@@ -253,12 +253,13 @@ func executePlan(db *gorm.DB, actions []migrationAction, existingProjects map[st
 
 		for _, action := range actions {
 			key := projectKey(action.OwnerUsername, action.TargetProjectName)
-			project := projectCache[key]
+		project := projectCache[key]
 			if project == nil {
 				project = &models.Project{
 					UUID:          uuid.NewString(),
 					OwnerUsername: action.OwnerUsername,
-					Name:          action.TargetProjectName,
+					Code:          action.TargetProjectName,
+					Name:          ptrString(action.TargetProjectName),
 					IsActive:      true,
 					IsSystem:      false,
 				}
@@ -268,7 +269,7 @@ func executePlan(db *gorm.DB, actions []migrationAction, existingProjects map[st
 				projectCache[key] = project
 			} else if !project.IsActive {
 				if err := tx.Model(&models.Project{}).Where("uuid = ?", project.UUID).Update("is_active", true).Error; err != nil {
-					return fmt.Errorf("reactivate project %s (%s): %w", project.Name, project.UUID, err)
+					return fmt.Errorf("reactivate project %s (%s): %w", derefString(project.Name), project.UUID, err)
 				}
 				project.IsActive = true
 			}
@@ -294,3 +295,14 @@ func setKeys(set map[string]struct{}) []string {
 func projectKey(owner, name string) string {
 	return owner + "||" + name
 }
+
+func derefString(value *string) string {
+	if value == nil {
+		return ""
+	}
+	return *value
+}
+
+func ptrString(value string) *string {
+	return &value
+}

cmd/qfs/main.go

@@ -46,10 +46,14 @@ var Version = "dev"
 
 const backgroundSyncInterval = 5 * time.Minute
 const onDemandPullCooldown = 30 * time.Second
+const startupConsoleWarning = "Не закрывайте консоль иначе приложение не будет работать"
 
 func main() {
+	showStartupConsoleWarning()
+
 	configPath := flag.String("config", "", "path to config file (default: user state dir or QFS_CONFIG_PATH)")
 	localDBPath := flag.String("localdb", "", "path to local SQLite database (default: user state dir or QFS_DB_PATH)")
+	resetLocalDB := flag.Bool("reset-localdb", false, "reset local SQLite data on startup (keeps connection settings)")
 	migrate := flag.Bool("migrate", false, "run database migrations")
 	version := flag.Bool("version", false, "show version information")
 	flag.Parse()
@@ -100,6 +104,13 @@ func main() {
 		}
 	}
 
+	if shouldResetLocalDB(*resetLocalDB) {
+		if err := localdb.ResetData(resolvedLocalDBPath); err != nil {
+			slog.Error("failed to reset local database", "error", err)
+			os.Exit(1)
+		}
+	}
+
 	// Initialize local SQLite database (always used)
 	local, err := localdb.New(resolvedLocalDBPath)
 	if err != nil {
@@ -232,6 +243,10 @@ func main() {
 	syncWorker := sync.NewWorker(syncService, connMgr, backgroundSyncInterval)
 	go syncWorker.Start(workerCtx)
 
+	backupCtx, backupCancel := context.WithCancel(context.Background())
+	defer backupCancel()
+	go startBackupScheduler(backupCtx, cfg, resolvedLocalDBPath, resolvedConfigPath)
+
 	srv := &http.Server{
 		Addr:         cfg.Address(),
 		Handler:      router,
@@ -274,6 +289,7 @@ func main() {
 	// Stop background sync worker first
 	syncWorker.Stop()
 	workerCancel()
+	backupCancel()
 
 	// Then shutdown HTTP server
 	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
@@ -290,6 +306,38 @@ func main() {
 	}
 }
 
+func showStartupConsoleWarning() {
+	// Visible in console output.
+	fmt.Println(startupConsoleWarning)
+	// Keep the warning always visible in the console window title when supported.
+	fmt.Printf("\033]0;%s\007", startupConsoleWarning)
+}
+
+func shouldResetLocalDB(flagValue bool) bool {
+	if flagValue {
+		return true
+	}
+	value := strings.TrimSpace(os.Getenv("QFS_RESET_LOCAL_DB"))
+	if value == "" {
+		return false
+	}
+	switch strings.ToLower(value) {
+	case "1", "true", "yes", "y":
+		return true
+	default:
+		return false
+	}
+}
+
+func derefString(value *string) string {
+	if value == nil {
+		return ""
+	}
+	return *value
+}
+
+ 
+
 func setConfigDefaults(cfg *config.Config) {
 	if cfg.Server.Host == "" {
 		cfg.Server.Host = "127.0.0.1"
@@ -324,6 +372,9 @@ func setConfigDefaults(cfg *config.Config) {
 	if cfg.Pricing.MinQuotesForMedian == 0 {
 		cfg.Pricing.MinQuotesForMedian = 3
 	}
+	if cfg.Backup.Time == "" {
+		cfg.Backup.Time = "00:00"
+	}
 }
 
 func ensureDefaultConfigFile(configPath string) error {
@@ -347,6 +398,9 @@ func ensureDefaultConfigFile(configPath string) error {
   read_timeout: 30s
   write_timeout: 30s
 
+backup:
+  time: "00:00"
+
 logging:
   level: "info"
   format: "json"
@@ -373,9 +427,14 @@ type runtimeLoggingConfig struct {
 	Output string `yaml:"output"`
 }
 
+type runtimeBackupConfig struct {
+	Time string `yaml:"time"`
+}
+
 type runtimeConfigFile struct {
 	Server  runtimeServerConfig  `yaml:"server"`
 	Logging runtimeLoggingConfig `yaml:"logging"`
+	Backup  runtimeBackupConfig  `yaml:"backup"`
 }
 
 // migrateConfigFileToRuntimeShape rewrites config.yaml in a minimal runtime format.
@@ -398,6 +457,9 @@ func migrateConfigFileToRuntimeShape(configPath string, cfg *config.Config) erro
 			Format: cfg.Logging.Format,
 			Output: cfg.Logging.Output,
 		},
+		Backup: runtimeBackupConfig{
+			Time: cfg.Backup.Time,
+		},
 	}
 
 	rendered, err := yaml.Marshal(&runtimeCfg)
@@ -416,6 +478,69 @@ func migrateConfigFileToRuntimeShape(configPath string, cfg *config.Config) erro
 	return nil
 }
 
+func startBackupScheduler(ctx context.Context, cfg *config.Config, dbPath, configPath string) {
+	if cfg == nil {
+		return
+	}
+
+	hour, minute, err := parseBackupTime(cfg.Backup.Time)
+	if err != nil {
+		slog.Warn("invalid backup time; using 00:00", "value", cfg.Backup.Time, "error", err)
+		hour = 0
+		minute = 0
+	}
+
+	if created, backupErr := appstate.EnsureRotatingLocalBackup(dbPath, configPath); backupErr != nil {
+		slog.Error("local backup failed", "error", backupErr)
+	} else if len(created) > 0 {
+		for _, path := range created {
+			slog.Info("local backup completed", "archive", path)
+		}
+	}
+
+	for {
+		next := nextBackupTime(time.Now(), hour, minute)
+		timer := time.NewTimer(time.Until(next))
+
+		select {
+		case <-ctx.Done():
+			timer.Stop()
+			return
+		case <-timer.C:
+			start := time.Now()
+			created, backupErr := appstate.EnsureRotatingLocalBackup(dbPath, configPath)
+			duration := time.Since(start)
+			if backupErr != nil {
+				slog.Error("local backup failed", "error", backupErr, "duration", duration)
+			} else {
+				for _, path := range created {
+					slog.Info("local backup completed", "archive", path, "duration", duration)
+				}
+			}
+		}
+	}
+}
+
+func parseBackupTime(value string) (int, int, error) {
+	if strings.TrimSpace(value) == "" {
+		return 0, 0, fmt.Errorf("empty backup time")
+	}
+	parsed, err := time.Parse("15:04", value)
+	if err != nil {
+		return 0, 0, err
+	}
+	return parsed.Hour(), parsed.Minute(), nil
+}
+
+func nextBackupTime(now time.Time, hour, minute int) time.Time {
+	location := now.Location()
+	target := time.Date(now.Year(), now.Month(), now.Day(), hour, minute, 0, 0, location)
+	if !now.Before(target) {
+		target = target.Add(24 * time.Hour)
+	}
+	return target
+}
+
 // runSetupMode starts a minimal server that only serves the setup page
 func runSetupMode(local *localdb.LocalDB) {
 	restartSig := make(chan struct{}, 1)
@@ -432,11 +557,11 @@ func runSetupMode(local *localdb.LocalDB) {
 	router := gin.New()
 	router.Use(gin.Recovery())
 
-	staticPath := filepath.Join("web", "static")
-	if stat, err := os.Stat(staticPath); err == nil && stat.IsDir() {
-		router.Static("/static", staticPath)
-	} else if staticFS, err := qfassets.StaticFS(); err == nil {
+	if staticFS, err := qfassets.StaticFS(); err == nil {
 		router.StaticFS("/static", http.FS(staticFS))
+	} else {
+		slog.Error("failed to load embedded static assets", "error", err)
+		os.Exit(1)
 	}
 
 	// Setup routes only
@@ -581,12 +706,12 @@ func setupRouter(cfg *config.Config, local *localdb.LocalDB, connMgr *db.Connect
 	if mariaDB != nil {
 		componentService = services.NewComponentService(componentRepo, categoryRepo, statsRepo)
 		quoteService = services.NewQuoteService(componentRepo, statsRepo, pricelistRepo, local, nil)
-		exportService = services.NewExportService(cfg.Export, categoryRepo)
+		exportService = services.NewExportService(cfg.Export, categoryRepo, local)
 	} else {
 		// In offline mode, we still need to create services that don't require DB.
 		componentService = services.NewComponentService(nil, nil, nil)
 		quoteService = services.NewQuoteService(nil, nil, nil, local, nil)
-		exportService = services.NewExportService(cfg.Export, nil)
+		exportService = services.NewExportService(cfg.Export, nil, local)
 	}
 
 	// isOnline function for local-first architecture
@@ -695,7 +820,7 @@ func setupRouter(cfg *config.Config, local *localdb.LocalDB, connMgr *db.Connect
 	// Handlers
 	componentHandler := handlers.NewComponentHandler(componentService, local)
 	quoteHandler := handlers.NewQuoteHandler(quoteService)
-	exportHandler := handlers.NewExportHandler(exportService, configService, componentService)
+	exportHandler := handlers.NewExportHandler(exportService, configService, projectService)
 	pricelistHandler := handlers.NewPricelistHandler(local)
 	syncHandler, err := handlers.NewSyncHandler(local, syncService, connMgr, templatesPath, backgroundSyncInterval)
 	if err != nil {
@@ -722,11 +847,10 @@ func setupRouter(cfg *config.Config, local *localdb.LocalDB, connMgr *db.Connect
 	router.Use(middleware.OfflineDetector(connMgr, local))
 
 	// Static files (use filepath.Join for Windows compatibility)
-	staticPath := filepath.Join("web", "static")
-	if stat, err := os.Stat(staticPath); err == nil && stat.IsDir() {
-		router.Static("/static", staticPath)
-	} else if staticFS, err := qfassets.StaticFS(); err == nil {
+	if staticFS, err := qfassets.StaticFS(); err == nil {
 		router.StaticFS("/static", http.FS(staticFS))
+	} else {
+		return nil, nil, fmt.Errorf("load embedded static assets: %w", err)
 	}
 
 	// Health check
@@ -815,6 +939,7 @@ func setupRouter(cfg *config.Config, local *localdb.LocalDB, connMgr *db.Connect
 	router.GET("/configurator", webHandler.Configurator)
 	router.GET("/projects", webHandler.Projects)
 	router.GET("/projects/:uuid", webHandler.ProjectDetail)
+	router.GET("/configs/:uuid/revisions", webHandler.ConfigRevisions)
 	router.GET("/pricelists", webHandler.Pricelists)
 	router.GET("/pricelists/:id", webHandler.PricelistDetail)
 
@@ -926,6 +1051,23 @@ func setupRouter(cfg *config.Config, local *localdb.LocalDB, connMgr *db.Connect
 				c.JSON(http.StatusCreated, config)
 			})
 
+			configs.POST("/preview-article", func(c *gin.Context) {
+				var req services.ArticlePreviewRequest
+				if err := c.ShouldBindJSON(&req); err != nil {
+					c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+					return
+				}
+				result, err := configService.BuildArticlePreview(&req)
+				if err != nil {
+					c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+					return
+				}
+				c.JSON(http.StatusOK, gin.H{
+					"article":  result.Article,
+					"warnings": result.Warnings,
+				})
+			})
+
 			configs.GET("/:uuid", func(c *gin.Context) {
 				uuid := c.Param("uuid")
 				config, err := configService.GetByUUIDNoAuth(uuid)
@@ -946,7 +1088,16 @@ func setupRouter(cfg *config.Config, local *localdb.LocalDB, connMgr *db.Connect
 
 				config, err := configService.UpdateNoAuth(uuid, &req)
 				if err != nil {
-					c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+					switch {
+					case errors.Is(err, services.ErrConfigNotFound):
+						c.JSON(http.StatusNotFound, gin.H{"error": err.Error()})
+					case errors.Is(err, services.ErrProjectNotFound):
+						c.JSON(http.StatusNotFound, gin.H{"error": err.Error()})
+					case errors.Is(err, services.ErrProjectForbidden):
+						c.JSON(http.StatusForbidden, gin.H{"error": err.Error()})
+					default:
+						c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+					}
 					return
 				}
 
@@ -997,15 +1148,20 @@ func setupRouter(cfg *config.Config, local *localdb.LocalDB, connMgr *db.Connect
 			configs.POST("/:uuid/clone", func(c *gin.Context) {
 				uuid := c.Param("uuid")
 				var req struct {
-					Name string `json:"name"`
+					Name        string `json:"name"`
+					FromVersion int    `json:"from_version"`
 				}
 				if err := c.ShouldBindJSON(&req); err != nil {
 					c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
 					return
 				}
 
-				config, err := configService.CloneNoAuth(uuid, req.Name, dbUsername)
+				config, err := configService.CloneNoAuthToProjectFromVersion(uuid, req.Name, dbUsername, nil, req.FromVersion)
 				if err != nil {
+					if errors.Is(err, services.ErrConfigVersionNotFound) {
+						c.JSON(http.StatusNotFound, gin.H{"error": "version not found"})
+						return
+					}
 					c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
 					return
 				}
@@ -1152,6 +1308,25 @@ func setupRouter(cfg *config.Config, local *localdb.LocalDB, connMgr *db.Connect
 					"current_version": currentVersion,
 				})
 			})
+
+			configs.GET("/:uuid/export", exportHandler.ExportConfigCSV)
+
+			configs.PATCH("/:uuid/server-count", func(c *gin.Context) {
+				uuid := c.Param("uuid")
+				var req struct {
+					ServerCount int `json:"server_count" binding:"required,min=1"`
+				}
+				if err := c.ShouldBindJSON(&req); err != nil {
+					c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+					return
+				}
+				config, err := configService.UpdateServerCount(uuid, req.ServerCount)
+				if err != nil {
+					c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+					return
+				}
+				c.JSON(http.StatusOK, config)
+			})
 		}
 
 		projects := api.Group("/projects")
@@ -1164,7 +1339,8 @@ func setupRouter(cfg *config.Config, local *localdb.LocalDB, connMgr *db.Connect
 				search := strings.ToLower(strings.TrimSpace(c.Query("search")))
 				author := strings.ToLower(strings.TrimSpace(c.Query("author")))
 				page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
-				perPage, _ := strconv.Atoi(c.DefaultQuery("per_page", "10"))
+				// Return all projects by default (set high limit for configs to reference)
+				perPage, _ := strconv.Atoi(c.DefaultQuery("per_page", "1000"))
 				sortField := strings.ToLower(strings.TrimSpace(c.DefaultQuery("sort", "created_at")))
 				sortDir := strings.ToLower(strings.TrimSpace(c.DefaultQuery("dir", "desc")))
 				if status != "active" && status != "archived" && status != "all" {
@@ -1204,7 +1380,10 @@ func setupRouter(cfg *config.Config, local *localdb.LocalDB, connMgr *db.Connect
 					if status == "archived" && p.IsActive {
 						continue
 					}
-					if search != "" && !strings.Contains(strings.ToLower(p.Name), search) {
+					if search != "" &&
+						!strings.Contains(strings.ToLower(derefString(p.Name)), search) &&
+						!strings.Contains(strings.ToLower(p.Code), search) &&
+						!strings.Contains(strings.ToLower(p.Variant), search) {
 						continue
 					}
 					if author != "" && !strings.Contains(strings.ToLower(strings.TrimSpace(p.OwnerUsername)), author) {
@@ -1217,8 +1396,8 @@ func setupRouter(cfg *config.Config, local *localdb.LocalDB, connMgr *db.Connect
 					left := filtered[i]
 					right := filtered[j]
 					if sortField == "name" {
-						leftName := strings.ToLower(strings.TrimSpace(left.Name))
-						rightName := strings.ToLower(strings.TrimSpace(right.Name))
+						leftName := strings.ToLower(strings.TrimSpace(derefString(left.Name)))
+						rightName := strings.ToLower(strings.TrimSpace(derefString(right.Name)))
 						if leftName == rightName {
 							if sortDir == "asc" {
 								return left.CreatedAt.Before(right.CreatedAt)
@@ -1231,8 +1410,8 @@ func setupRouter(cfg *config.Config, local *localdb.LocalDB, connMgr *db.Connect
 						return leftName > rightName
 					}
 					if left.CreatedAt.Equal(right.CreatedAt) {
-						leftName := strings.ToLower(strings.TrimSpace(left.Name))
-						rightName := strings.ToLower(strings.TrimSpace(right.Name))
+						leftName := strings.ToLower(strings.TrimSpace(derefString(left.Name)))
+						rightName := strings.ToLower(strings.TrimSpace(derefString(right.Name)))
 						if sortDir == "asc" {
 							return leftName < rightName
 						}
@@ -1291,6 +1470,8 @@ func setupRouter(cfg *config.Config, local *localdb.LocalDB, connMgr *db.Connect
 						"id":             p.ID,
 						"uuid":           p.UUID,
 						"owner_username": p.OwnerUsername,
+						"code":           p.Code,
+						"variant":        p.Variant,
 						"name":           p.Name,
 						"tracker_url":    p.TrackerURL,
 						"is_active":      p.IsActive,
@@ -1316,19 +1497,55 @@ func setupRouter(cfg *config.Config, local *localdb.LocalDB, connMgr *db.Connect
 				})
 			})
 
+			// GET /api/projects/all - Returns all projects without pagination for UI dropdowns
+			projects.GET("/all", func(c *gin.Context) {
+				allProjects, err := projectService.ListByUser(dbUsername, true)
+				if err != nil {
+					c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+					return
+				}
+
+				// Return simplified list of all projects (UUID + Name only)
+				type ProjectSimple struct {
+					UUID     string `json:"uuid"`
+					Code     string `json:"code"`
+					Variant  string `json:"variant"`
+					Name     string `json:"name"`
+					IsActive bool   `json:"is_active"`
+				}
+
+				simplified := make([]ProjectSimple, 0, len(allProjects))
+				for _, p := range allProjects {
+					simplified = append(simplified, ProjectSimple{
+						UUID:     p.UUID,
+						Code:     p.Code,
+						Variant:  p.Variant,
+						Name:     derefString(p.Name),
+						IsActive: p.IsActive,
+					})
+				}
+
+				c.JSON(http.StatusOK, simplified)
+			})
+
 			projects.POST("", func(c *gin.Context) {
 				var req services.CreateProjectRequest
 				if err := c.ShouldBindJSON(&req); err != nil {
 					c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
 					return
 				}
-				if strings.TrimSpace(req.Name) == "" {
-					c.JSON(http.StatusBadRequest, gin.H{"error": "project name is required"})
+				if strings.TrimSpace(req.Code) == "" {
+					c.JSON(http.StatusBadRequest, gin.H{"error": "project code is required"})
 					return
 				}
 				project, err := projectService.Create(dbUsername, &req)
 				if err != nil {
-					c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+					switch {
+					case errors.Is(err, services.ErrProjectCodeExists):
+						c.JSON(http.StatusConflict, gin.H{"error": err.Error()})
+					default:
+						c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+					}
 					return
 				}
 				c.JSON(http.StatusCreated, project)
@@ -1356,13 +1573,11 @@ func setupRouter(cfg *config.Config, local *localdb.LocalDB, connMgr *db.Connect
 					c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
 					return
 				}
-				if strings.TrimSpace(req.Name) == "" {
-					c.JSON(http.StatusBadRequest, gin.H{"error": "project name is required"})
-					return
-				}
 				project, err := projectService.Update(c.Param("uuid"), dbUsername, &req)
 				if err != nil {
 					switch {
+					case errors.Is(err, services.ErrProjectCodeExists):
+						c.JSON(http.StatusConflict, gin.H{"error": err.Error()})
 					case errors.Is(err, services.ErrProjectNotFound):
 						c.JSON(http.StatusNotFound, gin.H{"error": err.Error()})
 					case errors.Is(err, services.ErrProjectForbidden):
@@ -1405,6 +1620,23 @@ func setupRouter(cfg *config.Config, local *localdb.LocalDB, connMgr *db.Connect
 				c.JSON(http.StatusOK, gin.H{"message": "project reactivated"})
 			})
 
+			projects.DELETE("/:uuid", func(c *gin.Context) {
+				if err := projectService.DeleteVariant(c.Param("uuid"), dbUsername); err != nil {
+					switch {
+					case errors.Is(err, services.ErrCannotDeleteMainVariant):
+						c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+					case errors.Is(err, services.ErrProjectNotFound):
+						c.JSON(http.StatusNotFound, gin.H{"error": err.Error()})
+					case errors.Is(err, services.ErrProjectForbidden):
+						c.JSON(http.StatusForbidden, gin.H{"error": err.Error()})
+					default:
+						c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+					}
+					return
+				}
+				c.JSON(http.StatusOK, gin.H{"message": "variant deleted"})
+			})
+
 			projects.GET("/:uuid/configs", func(c *gin.Context) {
 				triggerPull("configs", &configsPullState, syncConfigurationsFromServer)
 
@@ -1447,6 +1679,8 @@ func setupRouter(cfg *config.Config, local *localdb.LocalDB, connMgr *db.Connect
 				c.JSON(http.StatusCreated, config)
 			})
 
+			projects.GET("/:uuid/export", exportHandler.ExportProjectCSV)
+
 			projects.POST("/:uuid/configs/:config_uuid/clone", func(c *gin.Context) {
 				var req struct {
 					Name string `json:"name"`
@@ -1479,6 +1713,7 @@ func setupRouter(cfg *config.Config, local *localdb.LocalDB, connMgr *db.Connect
 			syncAPI.POST("/push", syncHandler.PushPendingChanges)
 			syncAPI.GET("/pending/count", syncHandler.GetPendingCount)
 			syncAPI.GET("/pending", syncHandler.GetPendingChanges)
+			syncAPI.POST("/repair", syncHandler.RepairPendingChanges)
 		}
 	}
 
@@ -1530,11 +1765,37 @@ func requestLogger() gin.HandlerFunc {
 		path := c.Request.URL.Path
 		query := c.Request.URL.RawQuery
 
+		blw := &captureResponseWriter{
+			ResponseWriter: c.Writer,
+			body:           bytes.NewBuffer(nil),
+		}
+		c.Writer = blw
+
 		c.Next()
 
 		latency := time.Since(start)
 		status := c.Writer.Status()
 
+		if status >= http.StatusBadRequest {
+			responseBody := strings.TrimSpace(blw.body.String())
+			if len(responseBody) > 2048 {
+				responseBody = responseBody[:2048] + "...(truncated)"
+			}
+			errText := strings.TrimSpace(c.Errors.String())
+
+			slog.Error("request failed",
+				"method", c.Request.Method,
+				"path", path,
+				"query", query,
+				"status", status,
+				"latency", latency,
+				"ip", c.ClientIP(),
+				"errors", errText,
+				"response", responseBody,
+			)
+			return
+		}
+
 		slog.Info("request",
 			"method", c.Request.Method,
 			"path", path,
@@ -1545,3 +1806,22 @@ func requestLogger() gin.HandlerFunc {
 		)
 	}
 }
+
+type captureResponseWriter struct {
+	gin.ResponseWriter
+	body *bytes.Buffer
+}
+
+func (w *captureResponseWriter) Write(b []byte) (int, error) {
+	if len(b) > 0 {
+		_, _ = w.body.Write(b)
+	}
+	return w.ResponseWriter.Write(b)
+}
+
+func (w *captureResponseWriter) WriteString(s string) (int, error) {
+	if s != "" {
+		_, _ = w.body.WriteString(s)
+	}
+	return w.ResponseWriter.WriteString(s)
+}

cmd/qfs/versioning_api_test.go

@@ -149,7 +149,7 @@ func TestProjectArchiveHidesConfigsAndCloneIntoProject(t *testing.T) {
 		t.Fatalf("setup router: %v", err)
 	}
 
-	createProjectReq := httptest.NewRequest(http.MethodPost, "/api/projects", bytes.NewReader([]byte(`{"name":"P1"}`)))
+	createProjectReq := httptest.NewRequest(http.MethodPost, "/api/projects", bytes.NewReader([]byte(`{"name":"P1","code":"P1"}`)))
 	createProjectReq.Header.Set("Content-Type", "application/json")
 	createProjectRec := httptest.NewRecorder()
 	router.ServeHTTP(createProjectRec, createProjectReq)
@@ -243,7 +243,7 @@ func TestConfigMoveToProjectEndpoint(t *testing.T) {
 		t.Fatalf("setup router: %v", err)
 	}
 
-	createProjectReq := httptest.NewRequest(http.MethodPost, "/api/projects", bytes.NewReader([]byte(`{"name":"Move Project"}`)))
+	createProjectReq := httptest.NewRequest(http.MethodPost, "/api/projects", bytes.NewReader([]byte(`{"name":"Move Project","code":"MOVE"}`)))
 	createProjectReq.Header.Set("Content-Type", "application/json")
 	createProjectRec := httptest.NewRecorder()
 	router.ServeHTTP(createProjectRec, createProjectReq)

config.example.yaml

@@ -37,6 +37,9 @@ export:
   max_file_age: "1h"
   company_name: "Your Company Name"
 
+backup:
+  time: "00:00"
+
 alerts:
   enabled: true
   check_interval: "1h"

internal/appstate/backup.go

@@ -0,0 +1,273 @@
+package appstate
+
+import (
+	"archive/zip"
+	"encoding/json"
+	"fmt"
+	"io"
+	"os"
+	"path/filepath"
+	"sort"
+	"strings"
+	"time"
+)
+
+type backupPeriod struct {
+	name      string
+	retention int
+	key       func(time.Time) string
+	date      func(time.Time) string
+}
+
+var backupPeriods = []backupPeriod{
+	{
+		name:      "daily",
+		retention: 7,
+		key: func(t time.Time) string {
+			return t.Format("2006-01-02")
+		},
+		date: func(t time.Time) string {
+			return t.Format("2006-01-02")
+		},
+	},
+	{
+		name:      "weekly",
+		retention: 4,
+		key: func(t time.Time) string {
+			y, w := t.ISOWeek()
+			return fmt.Sprintf("%04d-W%02d", y, w)
+		},
+		date: func(t time.Time) string {
+			return t.Format("2006-01-02")
+		},
+	},
+	{
+		name:      "monthly",
+		retention: 12,
+		key: func(t time.Time) string {
+			return t.Format("2006-01")
+		},
+		date: func(t time.Time) string {
+			return t.Format("2006-01-02")
+		},
+	},
+	{
+		name:      "yearly",
+		retention: 10,
+		key: func(t time.Time) string {
+			return t.Format("2006")
+		},
+		date: func(t time.Time) string {
+			return t.Format("2006-01-02")
+		},
+	},
+}
+
+const (
+	envBackupDisable = "QFS_BACKUP_DISABLE"
+	envBackupDir     = "QFS_BACKUP_DIR"
+)
+
+var backupNow = time.Now
+
+// EnsureRotatingLocalBackup creates or refreshes daily/weekly/monthly/yearly backups
+// for the local database and config. It keeps a limited number per period.
+func EnsureRotatingLocalBackup(dbPath, configPath string) ([]string, error) {
+	if isBackupDisabled() {
+		return nil, nil
+	}
+	if dbPath == "" {
+		return nil, nil
+	}
+
+	if _, err := os.Stat(dbPath); err != nil {
+		if os.IsNotExist(err) {
+			return nil, nil
+		}
+		return nil, fmt.Errorf("stat db: %w", err)
+	}
+
+	root := resolveBackupRoot(dbPath)
+	now := backupNow()
+
+	created := make([]string, 0)
+	for _, period := range backupPeriods {
+		newFiles, err := ensurePeriodBackup(root, period, now, dbPath, configPath)
+		if err != nil {
+			return created, err
+		}
+		if len(newFiles) > 0 {
+			created = append(created, newFiles...)
+		}
+	}
+
+	return created, nil
+}
+
+func resolveBackupRoot(dbPath string) string {
+	if fromEnv := strings.TrimSpace(os.Getenv(envBackupDir)); fromEnv != "" {
+		return filepath.Clean(fromEnv)
+	}
+	return filepath.Join(filepath.Dir(dbPath), "backups")
+}
+
+func isBackupDisabled() bool {
+	val := strings.ToLower(strings.TrimSpace(os.Getenv(envBackupDisable)))
+	return val == "1" || val == "true" || val == "yes"
+}
+
+func ensurePeriodBackup(root string, period backupPeriod, now time.Time, dbPath, configPath string) ([]string, error) {
+	key := period.key(now)
+	periodDir := filepath.Join(root, period.name)
+	if err := os.MkdirAll(periodDir, 0755); err != nil {
+		return nil, fmt.Errorf("create %s backup dir: %w", period.name, err)
+	}
+
+	if hasBackupForKey(periodDir, key) {
+		return nil, nil
+	}
+
+	archiveName := fmt.Sprintf("qfs-backp-%s.zip", period.date(now))
+	archivePath := filepath.Join(periodDir, archiveName)
+
+	if err := createBackupArchive(archivePath, dbPath, configPath); err != nil {
+		return nil, fmt.Errorf("create %s backup archive: %w", period.name, err)
+	}
+
+	if err := writePeriodMarker(periodDir, key); err != nil {
+		return []string{archivePath}, err
+	}
+
+	if err := pruneOldBackups(periodDir, period.retention); err != nil {
+		return []string{archivePath}, err
+	}
+
+	return []string{archivePath}, nil
+}
+
+func hasBackupForKey(periodDir, key string) bool {
+	marker := periodMarker{Key: ""}
+	data, err := os.ReadFile(periodMarkerPath(periodDir))
+	if err != nil {
+		return false
+	}
+	if err := json.Unmarshal(data, &marker); err != nil {
+		return false
+	}
+	return marker.Key == key
+}
+
+type periodMarker struct {
+	Key string `json:"key"`
+}
+
+func periodMarkerPath(periodDir string) string {
+	return filepath.Join(periodDir, ".period.json")
+}
+
+func writePeriodMarker(periodDir, key string) error {
+	data, err := json.MarshalIndent(periodMarker{Key: key}, "", "  ")
+	if err != nil {
+		return err
+	}
+	return os.WriteFile(periodMarkerPath(periodDir), data, 0644)
+}
+
+func pruneOldBackups(periodDir string, keep int) error {
+	entries, err := os.ReadDir(periodDir)
+	if err != nil {
+		return fmt.Errorf("read backups dir: %w", err)
+	}
+
+	files := make([]os.DirEntry, 0, len(entries))
+	for _, entry := range entries {
+		if entry.IsDir() {
+			continue
+		}
+		if strings.HasSuffix(entry.Name(), ".zip") {
+			files = append(files, entry)
+		}
+	}
+
+	if len(files) <= keep {
+		return nil
+	}
+
+	sort.Slice(files, func(i, j int) bool {
+		infoI, errI := files[i].Info()
+		infoJ, errJ := files[j].Info()
+		if errI != nil || errJ != nil {
+			return files[i].Name() < files[j].Name()
+		}
+		return infoI.ModTime().Before(infoJ.ModTime())
+	})
+
+	for i := 0; i < len(files)-keep; i++ {
+		path := filepath.Join(periodDir, files[i].Name())
+		if err := os.Remove(path); err != nil {
+			return fmt.Errorf("remove old backup %s: %w", path, err)
+		}
+	}
+
+	return nil
+}
+
+func createBackupArchive(destPath, dbPath, configPath string) error {
+	file, err := os.Create(destPath)
+	if err != nil {
+		return err
+	}
+	defer file.Close()
+
+	zipWriter := zip.NewWriter(file)
+	if err := addZipFile(zipWriter, dbPath); err != nil {
+		_ = zipWriter.Close()
+		return err
+	}
+	_ = addZipOptionalFile(zipWriter, dbPath+"-wal")
+	_ = addZipOptionalFile(zipWriter, dbPath+"-shm")
+
+	if strings.TrimSpace(configPath) != "" {
+		_ = addZipOptionalFile(zipWriter, configPath)
+	}
+
+	if err := zipWriter.Close(); err != nil {
+		return err
+	}
+	return file.Sync()
+}
+
+func addZipOptionalFile(writer *zip.Writer, path string) error {
+	if _, err := os.Stat(path); err != nil {
+		return nil
+	}
+	return addZipFile(writer, path)
+}
+
+func addZipFile(writer *zip.Writer, path string) error {
+	in, err := os.Open(path)
+	if err != nil {
+		return err
+	}
+	defer in.Close()
+
+	info, err := in.Stat()
+	if err != nil {
+		return err
+	}
+
+	header, err := zip.FileInfoHeader(info)
+	if err != nil {
+		return err
+	}
+	header.Name = filepath.Base(path)
+	header.Method = zip.Deflate
+
+	out, err := writer.CreateHeader(header)
+	if err != nil {
+		return err
+	}
+
+	_, err = io.Copy(out, in)
+	return err
+}

internal/appstate/backup_test.go

@@ -0,0 +1,83 @@
+package appstate
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+	"time"
+)
+
+func TestEnsureRotatingLocalBackupCreatesAndRotates(t *testing.T) {
+	temp := t.TempDir()
+	dbPath := filepath.Join(temp, "qfs.db")
+	cfgPath := filepath.Join(temp, "config.yaml")
+
+	if err := os.WriteFile(dbPath, []byte("db"), 0644); err != nil {
+		t.Fatalf("write db: %v", err)
+	}
+	if err := os.WriteFile(cfgPath, []byte("cfg"), 0644); err != nil {
+		t.Fatalf("write config: %v", err)
+	}
+
+	prevNow := backupNow
+	defer func() { backupNow = prevNow }()
+	backupNow = func() time.Time { return time.Date(2026, 2, 11, 10, 0, 0, 0, time.UTC) }
+
+	created, err := EnsureRotatingLocalBackup(dbPath, cfgPath)
+	if err != nil {
+		t.Fatalf("backup: %v", err)
+	}
+	if len(created) == 0 {
+		t.Fatalf("expected backup to be created")
+	}
+
+	dailyArchive := filepath.Join(temp, "backups", "daily", "qfs-backp-2026-02-11.zip")
+	if _, err := os.Stat(dailyArchive); err != nil {
+		t.Fatalf("daily archive missing: %v", err)
+	}
+
+	backupNow = func() time.Time { return time.Date(2026, 2, 12, 10, 0, 0, 0, time.UTC) }
+	created, err = EnsureRotatingLocalBackup(dbPath, cfgPath)
+	if err != nil {
+		t.Fatalf("backup rotate: %v", err)
+	}
+	if len(created) == 0 {
+		t.Fatalf("expected backup to be created for new day")
+	}
+
+	dailyArchive = filepath.Join(temp, "backups", "daily", "qfs-backp-2026-02-12.zip")
+	if _, err := os.Stat(dailyArchive); err != nil {
+		t.Fatalf("daily archive missing after rotate: %v", err)
+	}
+}
+
+func TestEnsureRotatingLocalBackupEnvControls(t *testing.T) {
+	temp := t.TempDir()
+	dbPath := filepath.Join(temp, "qfs.db")
+	cfgPath := filepath.Join(temp, "config.yaml")
+
+	if err := os.WriteFile(dbPath, []byte("db"), 0644); err != nil {
+		t.Fatalf("write db: %v", err)
+	}
+	if err := os.WriteFile(cfgPath, []byte("cfg"), 0644); err != nil {
+		t.Fatalf("write config: %v", err)
+	}
+
+	backupRoot := filepath.Join(temp, "custom_backups")
+	t.Setenv(envBackupDir, backupRoot)
+
+	if _, err := EnsureRotatingLocalBackup(dbPath, cfgPath); err != nil {
+		t.Fatalf("backup with env: %v", err)
+	}
+	if _, err := os.Stat(filepath.Join(backupRoot, "daily", "meta.json")); err != nil {
+		t.Fatalf("expected backup in custom dir: %v", err)
+	}
+
+	t.Setenv(envBackupDisable, "1")
+	if _, err := EnsureRotatingLocalBackup(dbPath, cfgPath); err != nil {
+		t.Fatalf("backup disabled: %v", err)
+	}
+	if _, err := os.Stat(filepath.Join(backupRoot, "daily", "meta.json")); err != nil {
+		t.Fatalf("backup should remain from previous run: %v", err)
+	}
+}

internal/article/categories.go

@@ -0,0 +1,124 @@
+package article
+
+import (
+	"errors"
+	"fmt"
+	"strings"
+
+	"git.mchus.pro/mchus/quoteforge/internal/localdb"
+)
+
+// ErrMissingCategoryForLot is returned when a lot has no category in local_pricelist_items.lot_category.
+var ErrMissingCategoryForLot = errors.New("missing_category_for_lot")
+
+type MissingCategoryForLotError struct {
+	LotName string
+}
+
+func (e *MissingCategoryForLotError) Error() string {
+	if e == nil || strings.TrimSpace(e.LotName) == "" {
+		return ErrMissingCategoryForLot.Error()
+	}
+	return fmt.Sprintf("%s: %s", ErrMissingCategoryForLot.Error(), e.LotName)
+}
+
+func (e *MissingCategoryForLotError) Unwrap() error {
+	return ErrMissingCategoryForLot
+}
+
+type Group string
+
+const (
+	GroupCPU  Group = "CPU"
+	GroupMEM  Group = "MEM"
+	GroupGPU  Group = "GPU"
+	GroupDISK Group = "DISK"
+	GroupNET  Group = "NET"
+	GroupPSU  Group = "PSU"
+)
+
+// GroupForLotCategory maps pricelist lot_category codes into article groups.
+// Unknown/unrelated categories return ok=false.
+func GroupForLotCategory(cat string) (group Group, ok bool) {
+	c := strings.ToUpper(strings.TrimSpace(cat))
+	switch c {
+	case "CPU":
+		return GroupCPU, true
+	case "MEM":
+		return GroupMEM, true
+	case "GPU":
+		return GroupGPU, true
+	case "M2", "SSD", "HDD", "EDSFF", "HHHL":
+		return GroupDISK, true
+	case "NIC", "HCA", "DPU":
+		return GroupNET, true
+	case "HBA":
+		return GroupNET, true
+	case "PSU", "PS":
+		return GroupPSU, true
+	default:
+		return "", false
+	}
+}
+
+// ResolveLotCategoriesStrict resolves categories for lotNames using local_pricelist_items.lot_category
+// for a given server pricelist id. If any lot is missing or has empty category, returns an error.
+func ResolveLotCategoriesStrict(local *localdb.LocalDB, serverPricelistID uint, lotNames []string) (map[string]string, error) {
+	if local == nil {
+		return nil, fmt.Errorf("local db is nil")
+	}
+	cats, err := local.GetLocalLotCategoriesByServerPricelistID(serverPricelistID, lotNames)
+	if err != nil {
+		return nil, err
+	}
+	missing := make([]string, 0)
+	for _, lot := range lotNames {
+		cat := strings.TrimSpace(cats[lot])
+		if cat == "" {
+			missing = append(missing, lot)
+			continue
+		}
+		cats[lot] = cat
+	}
+	if len(missing) > 0 {
+		fallback, err := local.GetLocalComponentCategoriesByLotNames(missing)
+		if err != nil {
+			return nil, err
+		}
+		for _, lot := range missing {
+			if cat := strings.TrimSpace(fallback[lot]); cat != "" {
+				cats[lot] = cat
+			}
+		}
+		for _, lot := range missing {
+			if strings.TrimSpace(cats[lot]) == "" {
+				return nil, &MissingCategoryForLotError{LotName: lot}
+			}
+		}
+	}
+	return cats, nil
+}
+
+// NormalizeServerModel produces a stable article segment for the server model.
+func NormalizeServerModel(model string) string {
+	trimmed := strings.TrimSpace(model)
+	if trimmed == "" {
+		return ""
+	}
+	upper := strings.ToUpper(trimmed)
+	var b strings.Builder
+	for _, r := range upper {
+		if r >= 'A' && r <= 'Z' {
+			b.WriteRune(r)
+			continue
+		}
+		if r >= '0' && r <= '9' {
+			b.WriteRune(r)
+			continue
+		}
+		if r == '.' {
+			b.WriteRune(r)
+		}
+	}
+	return b.String()
+}

internal/article/categories_test.go

@@ -0,0 +1,98 @@
+package article
+
+import (
+	"errors"
+	"path/filepath"
+	"testing"
+	"time"
+
+	"git.mchus.pro/mchus/quoteforge/internal/localdb"
+)
+
+func TestResolveLotCategoriesStrict_MissingCategoryReturnsError(t *testing.T) {
+	local, err := localdb.New(filepath.Join(t.TempDir(), "local.db"))
+	if err != nil {
+		t.Fatalf("init local db: %v", err)
+	}
+	t.Cleanup(func() { _ = local.Close() })
+
+	if err := local.SaveLocalPricelist(&localdb.LocalPricelist{
+		ServerID:  1,
+		Source:    "estimate",
+		Version:   "S-2026-02-11-001",
+		Name:      "test",
+		CreatedAt: time.Now(),
+		SyncedAt:  time.Now(),
+	}); err != nil {
+		t.Fatalf("save local pricelist: %v", err)
+	}
+	localPL, err := local.GetLocalPricelistByServerID(1)
+	if err != nil {
+		t.Fatalf("get local pricelist: %v", err)
+	}
+	if err := local.SaveLocalPricelistItems([]localdb.LocalPricelistItem{
+		{PricelistID: localPL.ID, LotName: "CPU_A", LotCategory: "", Price: 10},
+	}); err != nil {
+		t.Fatalf("save local items: %v", err)
+	}
+
+	_, err = ResolveLotCategoriesStrict(local, 1, []string{"CPU_A"})
+	if err == nil {
+		t.Fatalf("expected error")
+	}
+	if !errors.Is(err, ErrMissingCategoryForLot) {
+		t.Fatalf("expected ErrMissingCategoryForLot, got %v", err)
+	}
+}
+
+func TestResolveLotCategoriesStrict_FallbackToLocalComponents(t *testing.T) {
+	local, err := localdb.New(filepath.Join(t.TempDir(), "local.db"))
+	if err != nil {
+		t.Fatalf("init local db: %v", err)
+	}
+	t.Cleanup(func() { _ = local.Close() })
+
+	if err := local.SaveLocalPricelist(&localdb.LocalPricelist{
+		ServerID:  2,
+		Source:    "estimate",
+		Version:   "S-2026-02-11-002",
+		Name:      "test",
+		CreatedAt: time.Now(),
+		SyncedAt:  time.Now(),
+	}); err != nil {
+		t.Fatalf("save local pricelist: %v", err)
+	}
+	localPL, err := local.GetLocalPricelistByServerID(2)
+	if err != nil {
+		t.Fatalf("get local pricelist: %v", err)
+	}
+	if err := local.SaveLocalPricelistItems([]localdb.LocalPricelistItem{
+		{PricelistID: localPL.ID, LotName: "CPU_B", LotCategory: "", Price: 10},
+	}); err != nil {
+		t.Fatalf("save local items: %v", err)
+	}
+	if err := local.DB().Create(&localdb.LocalComponent{
+		LotName:        "CPU_B",
+		Category:       "CPU",
+		LotDescription: "cpu",
+	}).Error; err != nil {
+		t.Fatalf("save local components: %v", err)
+	}
+
+	cats, err := ResolveLotCategoriesStrict(local, 2, []string{"CPU_B"})
+	if err != nil {
+		t.Fatalf("expected fallback, got error: %v", err)
+	}
+	if cats["CPU_B"] != "CPU" {
+		t.Fatalf("expected CPU, got %q", cats["CPU_B"])
+	}
+}
+
+func TestGroupForLotCategory(t *testing.T) {
+	if g, ok := GroupForLotCategory("cpu"); !ok || g != GroupCPU {
+		t.Fatalf("expected cpu -> GroupCPU")
+	}
+	if g, ok := GroupForLotCategory("SFP"); ok || g != "" {
+		t.Fatalf("expected SFP to be excluded")
+	}
+}

internal/article/generator.go

@@ -0,0 +1,602 @@
+package article
+
+import (
+	"fmt"
+	"regexp"
+	"sort"
+	"strings"
+
+	"git.mchus.pro/mchus/quoteforge/internal/localdb"
+	"git.mchus.pro/mchus/quoteforge/internal/models"
+)
+
+type BuildOptions struct {
+	ServerModel     string
+	SupportCode     string
+	ServerPricelist *uint
+}
+
+type BuildResult struct {
+	Article  string
+	Warnings []string
+}
+
+var (
+	reMemGiB = regexp.MustCompile(`(?i)(\d+)\s*(GB|G)`)
+	reMemTiB = regexp.MustCompile(`(?i)(\d+)\s*(TB|T)`)
+	reCapacityT = regexp.MustCompile(`(?i)(\d+(?:[.,]\d+)?)T`)
+	reCapacityG = regexp.MustCompile(`(?i)(\d+(?:[.,]\d+)?)G`)
+	rePortSpeed = regexp.MustCompile(`(?i)(\d+)p(\d+)(GbE|G)`)
+	rePortFC = regexp.MustCompile(`(?i)(\d+)pFC(\d+)`)
+	reWatts = regexp.MustCompile(`(?i)(\d{3,5})\s*W`)
+)
+
+func Build(local *localdb.LocalDB, items []models.ConfigItem, opts BuildOptions) (BuildResult, error) {
+	segments := make([]string, 0, 8)
+	warnings := make([]string, 0)
+
+	model := NormalizeServerModel(opts.ServerModel)
+	if model == "" {
+		return BuildResult{}, fmt.Errorf("server_model required")
+	}
+	segments = append(segments, model)
+
+	lotNames := make([]string, 0, len(items))
+	for _, it := range items {
+		lotNames = append(lotNames, it.LotName)
+	}
+
+	if opts.ServerPricelist == nil || *opts.ServerPricelist == 0 {
+		return BuildResult{}, fmt.Errorf("pricelist_id required for article")
+	}
+
+	cats, err := ResolveLotCategoriesStrict(local, *opts.ServerPricelist, lotNames)
+	if err != nil {
+		return BuildResult{}, err
+	}
+
+	cpuSeg := buildCPUSegment(items, cats)
+	if cpuSeg != "" {
+		segments = append(segments, cpuSeg)
+	}
+	memSeg, memWarn := buildMemSegment(items, cats)
+	if memWarn != "" {
+		warnings = append(warnings, memWarn)
+	}
+	if memSeg != "" {
+		segments = append(segments, memSeg)
+	}
+	gpuSeg := buildGPUSegment(items, cats)
+	if gpuSeg != "" {
+		segments = append(segments, gpuSeg)
+	}
+	diskSeg, diskWarn := buildDiskSegment(items, cats)
+	if diskWarn != "" {
+		warnings = append(warnings, diskWarn)
+	}
+	if diskSeg != "" {
+		segments = append(segments, diskSeg)
+	}
+	netSeg, netWarn := buildNetSegment(items, cats)
+	if netWarn != "" {
+		warnings = append(warnings, netWarn)
+	}
+	if netSeg != "" {
+		segments = append(segments, netSeg)
+	}
+	psuSeg, psuWarn := buildPSUSegment(items, cats)
+	if psuWarn != "" {
+		warnings = append(warnings, psuWarn)
+	}
+	if psuSeg != "" {
+		segments = append(segments, psuSeg)
+	}
+
+	if strings.TrimSpace(opts.SupportCode) != "" {
+		code := strings.TrimSpace(opts.SupportCode)
+		if !isSupportCodeValid(code) {
+			return BuildResult{}, fmt.Errorf("invalid_support_code")
+		}
+		segments = append(segments, code)
+	}
+
+	article := strings.Join(segments, "-")
+	if len([]rune(article)) > 80 {
+		article = compressArticle(segments)
+		warnings = append(warnings, "compressed")
+	}
+	if len([]rune(article)) > 80 {
+		return BuildResult{}, fmt.Errorf("article_overflow")
+	}
+
+	return BuildResult{Article: article, Warnings: warnings}, nil
+}
+
+func isSupportCodeValid(code string) bool {
+	if len(code) < 3 {
+		return false
+	}
+	if !strings.Contains(code, "y") {
+		return false
+	}
+	parts := strings.Split(code, "y")
+	if len(parts) != 2 || parts[0] == "" || parts[1] == "" {
+		return false
+	}
+	for _, r := range parts[0] {
+		if r < '0' || r > '9' {
+			return false
+		}
+	}
+	switch parts[1] {
+	case "W", "B", "S", "P":
+		return true
+	default:
+		return false
+	}
+}
+
+func buildCPUSegment(items []models.ConfigItem, cats map[string]string) string {
+	type agg struct {
+		qty int
+	}
+	models := map[string]*agg{}
+	for _, it := range items {
+		group, ok := GroupForLotCategory(cats[it.LotName])
+		if !ok || group != GroupCPU {
+			continue
+		}
+		model := parseCPUModel(it.LotName)
+		if model == "" {
+			model = "UNK"
+		}
+		if _, ok := models[model]; !ok {
+			models[model] = &agg{}
+		}
+		models[model].qty += it.Quantity
+	}
+	if len(models) == 0 {
+		return ""
+	}
+	parts := make([]string, 0, len(models))
+	for model, a := range models {
+		parts = append(parts, fmt.Sprintf("%dx%s", a.qty, model))
+	}
+	sort.Strings(parts)
+	return strings.Join(parts, "+")
+}
+
+func buildMemSegment(items []models.ConfigItem, cats map[string]string) (string, string) {
+	totalGiB := 0
+	for _, it := range items {
+		group, ok := GroupForLotCategory(cats[it.LotName])
+		if !ok || group != GroupMEM {
+			continue
+		}
+		per := parseMemGiB(it.LotName)
+		if per <= 0 {
+			return "", "mem_unknown"
+		}
+		totalGiB += per * it.Quantity
+	}
+	if totalGiB == 0 {
+		return "", ""
+	}
+	if totalGiB%1024 == 0 {
+		return fmt.Sprintf("%dT", totalGiB/1024), ""
+	}
+	return fmt.Sprintf("%dG", totalGiB), ""
+}
+
+func buildGPUSegment(items []models.ConfigItem, cats map[string]string) string {
+	models := map[string]int{}
+	for _, it := range items {
+		group, ok := GroupForLotCategory(cats[it.LotName])
+		if !ok || group != GroupGPU {
+			continue
+		}
+		model := parseGPUModel(it.LotName)
+		if model == "" {
+			model = "UNK"
+		}
+		models[model] += it.Quantity
+	}
+	if len(models) == 0 {
+		return ""
+	}
+	parts := make([]string, 0, len(models))
+	for model, qty := range models {
+		parts = append(parts, fmt.Sprintf("%dx%s", qty, model))
+	}
+	sort.Strings(parts)
+	return strings.Join(parts, "+")
+}
+
+func buildDiskSegment(items []models.ConfigItem, cats map[string]string) (string, string) {
+	type key struct {
+		t string
+		c string
+	}
+	groupQty := map[key]int{}
+	warn := ""
+	for _, it := range items {
+		group, ok := GroupForLotCategory(cats[it.LotName])
+		if !ok || group != GroupDISK {
+			continue
+		}
+		capToken := parseCapacity(it.LotName)
+		if capToken == "" {
+			warn = "disk_unknown"
+		}
+		typeCode := diskTypeCode(cats[it.LotName], it.LotName)
+		k := key{t: typeCode, c: capToken}
+		groupQty[k] += it.Quantity
+	}
+	if len(groupQty) == 0 {
+		return "", ""
+	}
+	parts := make([]string, 0, len(groupQty))
+	for k, qty := range groupQty {
+		if k.c == "" {
+			parts = append(parts, fmt.Sprintf("%dx%s", qty, k.t))
+		} else {
+			parts = append(parts, fmt.Sprintf("%dx%s%s", qty, k.c, k.t))
+		}
+	}
+	sort.Strings(parts)
+	return strings.Join(parts, "+"), warn
+}
+
+func buildNetSegment(items []models.ConfigItem, cats map[string]string) (string, string) {
+	groupQty := map[string]int{}
+	warn := ""
+	for _, it := range items {
+		group, ok := GroupForLotCategory(cats[it.LotName])
+		if !ok || group != GroupNET {
+			continue
+		}
+		profile := parsePortSpeed(it.LotName)
+		if profile == "" {
+			profile = "UNKNET"
+			warn = "net_unknown"
+		}
+		groupQty[profile] += it.Quantity
+	}
+	if len(groupQty) == 0 {
+		return "", ""
+	}
+	parts := make([]string, 0, len(groupQty))
+	for profile, qty := range groupQty {
+		parts = append(parts, fmt.Sprintf("%dx%s", qty, profile))
+	}
+	sort.Strings(parts)
+	return strings.Join(parts, "+"), warn
+}
+
+func buildPSUSegment(items []models.ConfigItem, cats map[string]string) (string, string) {
+	groupQty := map[string]int{}
+	warn := ""
+	for _, it := range items {
+		group, ok := GroupForLotCategory(cats[it.LotName])
+		if !ok || group != GroupPSU {
+			continue
+		}
+		rating := parseWatts(it.LotName)
+		if rating == "" {
+			rating = "UNKPSU"
+			warn = "psu_unknown"
+		}
+		groupQty[rating] += it.Quantity
+	}
+	if len(groupQty) == 0 {
+		return "", ""
+	}
+	parts := make([]string, 0, len(groupQty))
+	for rating, qty := range groupQty {
+		parts = append(parts, fmt.Sprintf("%dx%s", qty, rating))
+	}
+	sort.Strings(parts)
+	return strings.Join(parts, "+"), warn
+}
+
+func normalizeModelToken(lotName string) string {
+	if idx := strings.Index(lotName, "_"); idx >= 0 && idx+1 < len(lotName) {
+		lotName = lotName[idx+1:]
+	}
+	parts := strings.Split(lotName, "_")
+	token := parts[len(parts)-1]
+	return strings.ToUpper(strings.TrimSpace(token))
+}
+
+func parseCPUModel(lotName string) string {
+	parts := strings.Split(lotName, "_")
+	if len(parts) >= 2 {
+		last := strings.ToUpper(strings.TrimSpace(parts[len(parts)-1]))
+		if last != "" {
+			return last
+		}
+	}
+	return normalizeModelToken(lotName)
+}
+
+func parseGPUModel(lotName string) string {
+	upper := strings.ToUpper(lotName)
+	if idx := strings.Index(upper, "GPU_"); idx >= 0 {
+		upper = upper[idx+4:]
+	}
+	parts := strings.Split(upper, "_")
+	model := ""
+	mem := ""
+	for i, p := range parts {
+		if p == "" {
+			continue
+		}
+		switch p {
+		case "NV", "NVIDIA", "AMD", "RADEON", "PCIE", "PCI", "SXM", "SXMX":
+			continue
+		default:
+			if strings.Contains(p, "GB") {
+				mem = p
+				continue
+			}
+			if model == "" && (i > 0) {
+				model = p
+			}
+		}
+	}
+	if model != "" && mem != "" {
+		return model + "_" + mem
+	}
+	if model != "" {
+		return model
+	}
+	return normalizeModelToken(lotName)
+}
+
+func parseMemGiB(lotName string) int {
+	if m := reMemTiB.FindStringSubmatch(lotName); len(m) == 3 {
+		return atoi(m[1]) * 1024
+	}
+	if m := reMemGiB.FindStringSubmatch(lotName); len(m) == 3 {
+		return atoi(m[1])
+	}
+	return 0
+}
+
+func parseCapacity(lotName string) string {
+	if m := reCapacityT.FindStringSubmatch(lotName); len(m) == 2 {
+		return normalizeTToken(strings.ReplaceAll(m[1], ",", ".")) + "T"
+	}
+	if m := reCapacityG.FindStringSubmatch(lotName); len(m) == 2 {
+		return normalizeNumberToken(strings.ReplaceAll(m[1], ",", ".")) + "G"
+	}
+	return ""
+}
+
+func diskTypeCode(cat string, lotName string) string {
+	c := strings.ToUpper(strings.TrimSpace(cat))
+	if c == "M2" {
+		return "M2"
+	}
+	upper := strings.ToUpper(lotName)
+	if strings.Contains(upper, "NVME") {
+		return "NV"
+	}
+	if strings.Contains(upper, "SAS") {
+		return "SAS"
+	}
+	if strings.Contains(upper, "SATA") {
+		return "SAT"
+	}
+	return c
+}
+
+func parsePortSpeed(lotName string) string {
+	if m := rePortSpeed.FindStringSubmatch(lotName); len(m) == 4 {
+		return fmt.Sprintf("%sp%sG", m[1], m[2])
+	}
+	if m := rePortFC.FindStringSubmatch(lotName); len(m) == 3 {
+		return fmt.Sprintf("%spFC%s", m[1], m[2])
+	}
+	return ""
+}
+
+func parseWatts(lotName string) string {
+	if m := reWatts.FindStringSubmatch(lotName); len(m) == 2 {
+		w := atoi(m[1])
+		if w >= 1000 {
+			kw := fmt.Sprintf("%.1f", float64(w)/1000.0)
+			kw = strings.TrimSuffix(kw, ".0")
+			return fmt.Sprintf("%skW", kw)
+		}
+		return fmt.Sprintf("%dW", w)
+	}
+	return ""
+}
+
+func normalizeNumberToken(raw string) string {
+	raw = strings.TrimSpace(raw)
+	raw = strings.TrimLeft(raw, "0")
+	if raw == "" || raw[0] == '.' {
+		raw = "0" + raw
+	}
+	return raw
+}
+
+func normalizeTToken(raw string) string {
+	raw = normalizeNumberToken(raw)
+	parts := strings.SplitN(raw, ".", 2)
+	intPart := parts[0]
+	frac := ""
+	if len(parts) == 2 {
+		frac = parts[1]
+	}
+	if frac == "" {
+		frac = "0"
+	}
+	if len(intPart) >= 2 {
+		return intPart + "." + frac
+	}
+	if len(frac) > 1 {
+		frac = frac[:1]
+	}
+	return intPart + "." + frac
+}
+
+func atoi(v string) int {
+	n := 0
+	for _, r := range v {
+		if r < '0' || r > '9' {
+			continue
+		}
+		n = n*10 + int(r-'0')
+	}
+	return n
+}
+
+func compressArticle(segments []string) string {
+	if len(segments) == 0 {
+		return ""
+	}
+	normalized := make([]string, 0, len(segments))
+	for _, s := range segments {
+		normalized = append(normalized, strings.ReplaceAll(s, "GbE", "G"))
+	}
+	segments = normalized
+	article := strings.Join(segments, "-")
+	if len([]rune(article)) <= 80 {
+		return article
+	}
+
+	// segment order: model, cpu, mem, gpu, disk, net, psu, support
+	index := func(i int) (int, bool) {
+		if i >= 0 && i < len(segments) {
+			return i, true
+		}
+		return -1, false
+	}
+
+	// 1) remove PSU
+	if i, ok := index(6); ok {
+		segments = append(segments[:i], segments[i+1:]...)
+		article = strings.Join(segments, "-")
+		if len([]rune(article)) <= 80 {
+			return article
+		}
+	}
+
+	// 2) compress NET/HBA/HCA
+	if i, ok := index(5); ok {
+		segments[i] = compressNetSegment(segments[i])
+		article = strings.Join(segments, "-")
+		if len([]rune(article)) <= 80 {
+			return article
+		}
+	}
+
+	// 3) compress DISK
+	if i, ok := index(4); ok {
+		segments[i] = compressDiskSegment(segments[i])
+		article = strings.Join(segments, "-")
+		if len([]rune(article)) <= 80 {
+			return article
+		}
+	}
+
+	// 4) compress GPU to vendor only (GPU_NV)
+	if i, ok := index(3); ok {
+		segments[i] = compressGPUSegment(segments[i])
+	}
+	return strings.Join(segments, "-")
+}
+
+func compressNetSegment(seg string) string {
+	if seg == "" {
+		return seg
+	}
+	parts := strings.Split(seg, "+")
+	out := make([]string, 0, len(parts))
+	for _, p := range parts {
+		p = strings.TrimSpace(p)
+		if p == "" {
+			continue
+		}
+		qty := "1"
+		profile := p
+		if x := strings.SplitN(p, "x", 2); len(x) == 2 {
+			qty = x[0]
+			profile = x[1]
+		}
+		upper := strings.ToUpper(profile)
+		label := "NIC"
+		if strings.Contains(upper, "FC") {
+			label = "HBA"
+		} else if strings.Contains(upper, "HCA") || strings.Contains(upper, "IB") {
+			label = "HCA"
+		}
+		out = append(out, fmt.Sprintf("%sx%s", qty, label))
+	}
+	if len(out) == 0 {
+		return seg
+	}
+	sort.Strings(out)
+	return strings.Join(out, "+")
+}
+
+func compressDiskSegment(seg string) string {
+	if seg == "" {
+		return seg
+	}
+	parts := strings.Split(seg, "+")
+	out := make([]string, 0, len(parts))
+	for _, p := range parts {
+		p = strings.TrimSpace(p)
+		if p == "" {
+			continue
+		}
+		qty := "1"
+		spec := p
+		if x := strings.SplitN(p, "x", 2); len(x) == 2 {
+			qty = x[0]
+			spec = x[1]
+		}
+		upper := strings.ToUpper(spec)
+		label := "DSK"
+		for _, t := range []string{"M2", "NV", "SAS", "SAT", "SSD", "HDD", "EDS", "HHH"} {
+			if strings.Contains(upper, t) {
+				label = t
+				break
+			}
+		}
+		out = append(out, fmt.Sprintf("%sx%s", qty, label))
+	}
+	if len(out) == 0 {
+		return seg
+	}
+	sort.Strings(out)
+	return strings.Join(out, "+")
+}
+
+func compressGPUSegment(seg string) string {
+	if seg == "" {
+		return seg
+	}
+	parts := strings.Split(seg, "+")
+	out := make([]string, 0, len(parts))
+	for _, p := range parts {
+		p = strings.TrimSpace(p)
+		if p == "" {
+			continue
+		}
+		qty := "1"
+		if x := strings.SplitN(p, "x", 2); len(x) == 2 {
+			qty = x[0]
+		}
+		out = append(out, fmt.Sprintf("%sxGPU_NV", qty))
+	}
+	if len(out) == 0 {
+		return seg
+	}
+	sort.Strings(out)
+	return strings.Join(out, "+")
+}

internal/article/generator_test.go

@@ -0,0 +1,66 @@
+package article
+
+import (
+	"path/filepath"
+	"strings"
+	"testing"
+	"time"
+
+	"git.mchus.pro/mchus/quoteforge/internal/localdb"
+	"git.mchus.pro/mchus/quoteforge/internal/models"
+)
+
+func TestBuild_ParsesNetAndPSU(t *testing.T) {
+	local, err := localdb.New(filepath.Join(t.TempDir(), "local.db"))
+	if err != nil {
+		t.Fatalf("init local db: %v", err)
+	}
+	t.Cleanup(func() { _ = local.Close() })
+
+	if err := local.SaveLocalPricelist(&localdb.LocalPricelist{
+		ServerID:  1,
+		Source:    "estimate",
+		Version:   "S-2026-02-11-001",
+		Name:      "test",
+		CreatedAt: time.Now(),
+		SyncedAt:  time.Now(),
+	}); err != nil {
+		t.Fatalf("save local pricelist: %v", err)
+	}
+	localPL, err := local.GetLocalPricelistByServerID(1)
+	if err != nil {
+		t.Fatalf("get local pricelist: %v", err)
+	}
+
+	if err := local.SaveLocalPricelistItems([]localdb.LocalPricelistItem{
+		{PricelistID: localPL.ID, LotName: "NIC_2p25G_MCX512A-AC", LotCategory: "NIC", Price: 1},
+		{PricelistID: localPL.ID, LotName: "HBA_2pFC32_Gen6", LotCategory: "HBA", Price: 1},
+		{PricelistID: localPL.ID, LotName: "PS_1000W_Platinum", LotCategory: "PS", Price: 1},
+	}); err != nil {
+		t.Fatalf("save local items: %v", err)
+	}
+
+	items := models.ConfigItems{
+		{LotName: "NIC_2p25G_MCX512A-AC", Quantity: 1},
+		{LotName: "HBA_2pFC32_Gen6", Quantity: 1},
+		{LotName: "PS_1000W_Platinum", Quantity: 2},
+	}
+	result, err := Build(local, items, BuildOptions{
+		ServerModel:     "DL380GEN11",
+		SupportCode:     "1yW",
+		ServerPricelist: &localPL.ServerID,
+	})
+	if err != nil {
+		t.Fatalf("build article: %v", err)
+	}
+	if result.Article == "" {
+		t.Fatalf("expected article to be non-empty")
+	}
+	if contains(result.Article, "UNKNET") || contains(result.Article, "UNKPSU") {
+		t.Fatalf("unexpected UNK in article: %s", result.Article)
+	}
+}
+
+func contains(s, sub string) bool {
+	return strings.Contains(s, sub)
+}

internal/config/config.go

@@ -20,6 +20,7 @@ type Config struct {
 	Alerts        AlertsConfig        `yaml:"alerts"`
 	Notifications NotificationsConfig `yaml:"notifications"`
 	Logging       LoggingConfig       `yaml:"logging"`
+	Backup        BackupConfig        `yaml:"backup"`
 }
 
 type ServerConfig struct {
@@ -101,6 +102,10 @@ type LoggingConfig struct {
 	FilePath string `yaml:"file_path"`
 }
 
+type BackupConfig struct {
+	Time string `yaml:"time"`
+}
+
 func Load(path string) (*Config, error) {
 	data, err := os.ReadFile(path)
 	if err != nil {
@@ -182,6 +187,10 @@ func (c *Config) setDefaults() {
 	if c.Logging.Output == "" {
 		c.Logging.Output = "stdout"
 	}
+
+	if c.Backup.Time == "" {
+		c.Backup.Time = "00:00"
+	}
 }
 
 func (c *Config) Address() string {

internal/handlers/component.go

@@ -61,7 +61,6 @@ func (h *ComponentHandler) List(c *gin.Context) {
 			Category:     lc.Category,
 			CategoryName: lc.Category,
 			Model:        lc.Model,
-			CurrentPrice: lc.CurrentPrice,
 		}
 	}
 
@@ -87,7 +86,6 @@ func (h *ComponentHandler) Get(c *gin.Context) {
 		Category:     component.Category,
 		CategoryName: component.Category,
 		Model:        component.Model,
-		CurrentPrice: component.CurrentPrice,
 	})
 }
 

internal/handlers/export.go

@@ -3,34 +3,41 @@ package handlers
 import (
 	"fmt"
 	"net/http"
+	"strings"
 	"time"
 
 	"git.mchus.pro/mchus/quoteforge/internal/middleware"
+	"git.mchus.pro/mchus/quoteforge/internal/models"
 	"git.mchus.pro/mchus/quoteforge/internal/services"
 	"github.com/gin-gonic/gin"
 )
 
 type ExportHandler struct {
-	exportService    *services.ExportService
-	configService    services.ConfigurationGetter
-	componentService *services.ComponentService
+	exportService  *services.ExportService
+	configService  services.ConfigurationGetter
+	projectService *services.ProjectService
 }
 
 func NewExportHandler(
 	exportService *services.ExportService,
 	configService services.ConfigurationGetter,
-	componentService *services.ComponentService,
+	projectService *services.ProjectService,
 ) *ExportHandler {
 	return &ExportHandler{
-		exportService:    exportService,
-		configService:    configService,
-		componentService: componentService,
+		exportService:  exportService,
+		configService:  configService,
+		projectService: projectService,
 	}
 }
 
 type ExportRequest struct {
-	Name  string `json:"name" binding:"required"`
-	Items []struct {
+	Name        string `json:"name" binding:"required"`
+	ProjectName string `json:"project_name"`
+	ProjectUUID string `json:"project_uuid"`
+	Article     string `json:"article"`
+	ServerCount int    `json:"server_count"`
+	PricelistID *uint  `json:"pricelist_id"`
+	Items       []struct {
 		LotName   string  `json:"lot_name" binding:"required"`
 		Quantity  int     `json:"quantity" binding:"required,min=1"`
 		UnitPrice float64 `json:"unit_price"`
@@ -47,75 +54,162 @@ func (h *ExportHandler) ExportCSV(c *gin.Context) {
 
 	data := h.buildExportData(&req)
 
-	csvData, err := h.exportService.ToCSV(data)
-	if err != nil {
-		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+	// Validate before streaming (can return JSON error)
+	if len(data.Configs) == 0 || len(data.Configs[0].Items) == 0 {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "no items to export"})
 		return
 	}
 
-	filename := fmt.Sprintf("%s %s SPEC.csv", time.Now().Format("2006-01-02"), req.Name)
+	// Get project code for filename
+	projectCode := req.ProjectName // legacy field: may contain code from frontend
+	if projectCode == "" && req.ProjectUUID != "" {
+		username := middleware.GetUsername(c)
+		if project, err := h.projectService.GetByUUID(req.ProjectUUID, username); err == nil && project != nil {
+			projectCode = project.Code
+		}
+	}
+	if projectCode == "" {
+		projectCode = req.Name
+	}
+
+	// Set headers before streaming
+	exportDate := data.CreatedAt
+	articleSegment := sanitizeFilenameSegment(req.Article)
+	if articleSegment == "" {
+		articleSegment = "BOM"
+	}
+	filename := fmt.Sprintf("%s (%s) %s %s.csv", exportDate.Format("2006-01-02"), projectCode, req.Name, articleSegment)
+	c.Header("Content-Type", "text/csv; charset=utf-8")
 	c.Header("Content-Disposition", fmt.Sprintf("attachment; filename=\"%s\"", filename))
-	c.Data(http.StatusOK, "text/csv; charset=utf-8", csvData)
+
+	// Stream CSV (cannot return JSON after this point)
+	if err := h.exportService.ToCSV(c.Writer, data); err != nil {
+		c.Error(err) // Log only
+		return
+	}
 }
 
-func (h *ExportHandler) buildExportData(req *ExportRequest) *services.ExportData {
-	items := make([]services.ExportItem, len(req.Items))
-	var total float64
-
+// buildExportData converts an ExportRequest into a ProjectExportData using a temporary Configuration model
+// so that ExportService.ConfigToExportData can resolve categories via localDB.
+func (h *ExportHandler) buildExportData(req *ExportRequest) *services.ProjectExportData {
+	configItems := make(models.ConfigItems, len(req.Items))
 	for i, item := range req.Items {
-		itemTotal := item.UnitPrice * float64(item.Quantity)
-
-		// Получаем информацию о компоненте для заполнения категории и описания
-		componentView, err := h.componentService.GetByLotName(item.LotName)
-		if err != nil {
-			// Если не удалось получить информацию о компоненте, используем только основные данные
-			items[i] = services.ExportItem{
-				LotName:    item.LotName,
-				Quantity:   item.Quantity,
-				UnitPrice:  item.UnitPrice,
-				TotalPrice: itemTotal,
-			}
-		} else {
-			items[i] = services.ExportItem{
-				LotName:     item.LotName,
-				Description: componentView.Description,
-				Category:    componentView.Category,
-				Quantity:    item.Quantity,
-				UnitPrice:   item.UnitPrice,
-				TotalPrice:  itemTotal,
-			}
+		configItems[i] = models.ConfigItem{
+			LotName:   item.LotName,
+			Quantity:  item.Quantity,
+			UnitPrice: item.UnitPrice,
 		}
-		total += itemTotal
 	}
 
-	return &services.ExportData{
-		Name:      req.Name,
-		Items:     items,
-		Total:     total,
-		Notes:     req.Notes,
-		CreatedAt: time.Now(),
+	serverCount := req.ServerCount
+	if serverCount < 1 {
+		serverCount = 1
 	}
+
+	cfg := &models.Configuration{
+		Article:     req.Article,
+		ServerCount: serverCount,
+		PricelistID: req.PricelistID,
+		Items:       configItems,
+		CreatedAt:   time.Now(),
+	}
+
+	return h.exportService.ConfigToExportData(cfg)
+}
+
+func sanitizeFilenameSegment(value string) string {
+	if strings.TrimSpace(value) == "" {
+		return ""
+	}
+	replacer := strings.NewReplacer(
+		"/", "_",
+		"\\", "_",
+		":", "_",
+		"*", "_",
+		"?", "_",
+		"\"", "_",
+		"<", "_",
+		">", "_",
+		"|", "_",
+	)
+	return strings.TrimSpace(replacer.Replace(value))
 }
 
 func (h *ExportHandler) ExportConfigCSV(c *gin.Context) {
 	username := middleware.GetUsername(c)
 	uuid := c.Param("uuid")
 
+	// Get config before streaming (can return JSON error)
 	config, err := h.configService.GetByUUID(uuid, username)
 	if err != nil {
 		c.JSON(http.StatusNotFound, gin.H{"error": err.Error()})
 		return
 	}
 
-	data := h.exportService.ConfigToExportData(config, h.componentService)
+	data := h.exportService.ConfigToExportData(config)
 
-	csvData, err := h.exportService.ToCSV(data)
+	// Validate before streaming (can return JSON error)
+	if len(data.Configs) == 0 || len(data.Configs[0].Items) == 0 {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "no items to export"})
+		return
+	}
+
+	// Get project code for filename
+	projectCode := config.Name // fallback: use config name if no project
+	if config.ProjectUUID != nil && *config.ProjectUUID != "" {
+		if project, err := h.projectService.GetByUUID(*config.ProjectUUID, username); err == nil && project != nil {
+			projectCode = project.Code
+		}
+	}
+
+	// Set headers before streaming
+	// Use price update time if available, otherwise creation time
+	exportDate := config.CreatedAt
+	if config.PriceUpdatedAt != nil {
+		exportDate = *config.PriceUpdatedAt
+	}
+	filename := fmt.Sprintf("%s (%s) %s BOM.csv", exportDate.Format("2006-01-02"), projectCode, config.Name)
+	c.Header("Content-Type", "text/csv; charset=utf-8")
+	c.Header("Content-Disposition", fmt.Sprintf("attachment; filename=\"%s\"", filename))
+
+	// Stream CSV (cannot return JSON after this point)
+	if err := h.exportService.ToCSV(c.Writer, data); err != nil {
+		c.Error(err) // Log only
+		return
+	}
+}
+
+// ExportProjectCSV exports all active configurations of a project as a single CSV file.
+func (h *ExportHandler) ExportProjectCSV(c *gin.Context) {
+	username := middleware.GetUsername(c)
+	projectUUID := c.Param("uuid")
+
+	project, err := h.projectService.GetByUUID(projectUUID, username)
+	if err != nil {
+		c.JSON(http.StatusNotFound, gin.H{"error": err.Error()})
+		return
+	}
+
+	result, err := h.projectService.ListConfigurations(projectUUID, username, "active")
 	if err != nil {
 		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
 		return
 	}
 
-	filename := fmt.Sprintf("%s %s SPEC.csv", config.CreatedAt.Format("2006-01-02"), config.Name)
+	if len(result.Configs) == 0 {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "no configurations to export"})
+		return
+	}
+
+	data := h.exportService.ProjectToExportData(result.Configs)
+
+	// Filename: YYYY-MM-DD (ProjectCode) BOM.csv
+	filename := fmt.Sprintf("%s (%s) BOM.csv", time.Now().Format("2006-01-02"), project.Code)
+	c.Header("Content-Type", "text/csv; charset=utf-8")
 	c.Header("Content-Disposition", fmt.Sprintf("attachment; filename=\"%s\"", filename))
-	c.Data(http.StatusOK, "text/csv; charset=utf-8", csvData)
+
+	if err := h.exportService.ToCSV(c.Writer, data); err != nil {
+		c.Error(err)
+		return
+	}
 }

internal/handlers/export_test.go

@@ -0,0 +1,305 @@
+package handlers
+
+import (
+	"bytes"
+	"encoding/csv"
+	"encoding/json"
+	"errors"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+	"time"
+
+	"git.mchus.pro/mchus/quoteforge/internal/config"
+	"git.mchus.pro/mchus/quoteforge/internal/models"
+	"git.mchus.pro/mchus/quoteforge/internal/services"
+	"github.com/gin-gonic/gin"
+)
+
+// Mock services for testing
+type mockConfigService struct {
+	config *models.Configuration
+	err    error
+}
+
+func (m *mockConfigService) GetByUUID(uuid string, ownerUsername string) (*models.Configuration, error) {
+	return m.config, m.err
+}
+
+
+func TestExportCSV_Success(t *testing.T) {
+	gin.SetMode(gin.TestMode)
+
+	// Create handler with mocks
+	exportSvc := services.NewExportService(config.ExportConfig{}, nil, nil)
+	handler := NewExportHandler(
+		exportSvc,
+		&mockConfigService{},
+		nil,
+	)
+
+	// Create JSON request body
+	jsonBody := `{
+		"name": "Test Export",
+		"items": [
+			{
+				"lot_name": "LOT-001",
+				"quantity": 2,
+				"unit_price": 100.50
+			}
+		],
+		"notes": "Test notes"
+	}`
+
+	// Create HTTP request
+	req, _ := http.NewRequest("POST", "/api/export/csv", bytes.NewBufferString(jsonBody))
+	req.Header.Set("Content-Type", "application/json")
+
+	// Create response recorder
+	w := httptest.NewRecorder()
+
+	// Create Gin context
+	c, _ := gin.CreateTestContext(w)
+	c.Request = req
+
+	// Call handler
+	handler.ExportCSV(c)
+
+	// Check status code
+	if w.Code != http.StatusOK {
+		t.Errorf("Expected status 200, got %d", w.Code)
+	}
+
+	// Check Content-Type header
+	contentType := w.Header().Get("Content-Type")
+	if contentType != "text/csv; charset=utf-8" {
+		t.Errorf("Expected Content-Type 'text/csv; charset=utf-8', got %q", contentType)
+	}
+
+	// Check for BOM
+	responseBody := w.Body.Bytes()
+	if len(responseBody) < 3 {
+		t.Fatalf("Response too short to contain BOM")
+	}
+
+	expectedBOM := []byte{0xEF, 0xBB, 0xBF}
+	actualBOM := responseBody[:3]
+	if !bytes.Equal(actualBOM, expectedBOM) {
+		t.Errorf("UTF-8 BOM mismatch. Expected %v, got %v", expectedBOM, actualBOM)
+	}
+
+	// Check semicolon delimiter in CSV
+	reader := csv.NewReader(bytes.NewReader(responseBody[3:]))
+	reader.Comma = ';'
+
+	header, err := reader.Read()
+	if err != nil {
+		t.Errorf("Failed to parse CSV header: %v", err)
+	}
+
+	if len(header) != 8 {
+		t.Errorf("Expected 8 columns, got %d", len(header))
+	}
+}
+
+func TestExportCSV_InvalidRequest(t *testing.T) {
+	gin.SetMode(gin.TestMode)
+
+	exportSvc := services.NewExportService(config.ExportConfig{}, nil, nil)
+	handler := NewExportHandler(
+		exportSvc,
+		&mockConfigService{},
+		nil,
+	)
+
+	// Create invalid request (missing required field)
+	req, _ := http.NewRequest("POST", "/api/export/csv", bytes.NewBufferString(`{"name": "Test"}`))
+	req.Header.Set("Content-Type", "application/json")
+
+	w := httptest.NewRecorder()
+	c, _ := gin.CreateTestContext(w)
+	c.Request = req
+
+	handler.ExportCSV(c)
+
+	// Should return 400 Bad Request
+	if w.Code != http.StatusBadRequest {
+		t.Errorf("Expected status 400, got %d", w.Code)
+	}
+
+	// Should return JSON error
+	var errResp map[string]interface{}
+	json.Unmarshal(w.Body.Bytes(), &errResp)
+	if _, hasError := errResp["error"]; !hasError {
+		t.Errorf("Expected error in JSON response")
+	}
+}
+
+func TestExportCSV_EmptyItems(t *testing.T) {
+	gin.SetMode(gin.TestMode)
+
+	exportSvc := services.NewExportService(config.ExportConfig{}, nil, nil)
+	handler := NewExportHandler(
+		exportSvc,
+		&mockConfigService{},
+		nil,
+	)
+
+	// Create request with empty items array - should fail binding validation
+	req, _ := http.NewRequest("POST", "/api/export/csv", bytes.NewBufferString(`{"name":"Empty Export","items":[],"notes":""}`))
+	req.Header.Set("Content-Type", "application/json")
+
+	w := httptest.NewRecorder()
+	c, _ := gin.CreateTestContext(w)
+	c.Request = req
+
+	handler.ExportCSV(c)
+
+	// Should return 400 Bad Request (validation error from gin binding)
+	if w.Code != http.StatusBadRequest {
+		t.Logf("Status code: %d (expected 400 for empty items)", w.Code)
+	}
+}
+
+func TestExportConfigCSV_Success(t *testing.T) {
+	gin.SetMode(gin.TestMode)
+
+	// Mock configuration
+	mockConfig := &models.Configuration{
+		UUID:          "test-uuid",
+		Name:          "Test Config",
+		OwnerUsername: "testuser",
+		Items: models.ConfigItems{
+			{
+				LotName:   "LOT-001",
+				Quantity:  1,
+				UnitPrice: 100.0,
+			},
+		},
+		CreatedAt: time.Now(),
+	}
+
+	exportSvc := services.NewExportService(config.ExportConfig{}, nil, nil)
+	handler := NewExportHandler(
+		exportSvc,
+		&mockConfigService{config: mockConfig},
+		nil,
+	)
+
+	// Create HTTP request
+	req, _ := http.NewRequest("GET", "/api/configs/test-uuid/export", nil)
+	w := httptest.NewRecorder()
+
+	c, _ := gin.CreateTestContext(w)
+	c.Request = req
+	c.Params = gin.Params{
+		{Key: "uuid", Value: "test-uuid"},
+	}
+
+	// Mock middleware.GetUsername
+	c.Set("username", "testuser")
+
+	handler.ExportConfigCSV(c)
+
+	// Check status code
+	if w.Code != http.StatusOK {
+		t.Errorf("Expected status 200, got %d", w.Code)
+	}
+
+	// Check Content-Type header
+	contentType := w.Header().Get("Content-Type")
+	if contentType != "text/csv; charset=utf-8" {
+		t.Errorf("Expected Content-Type 'text/csv; charset=utf-8', got %q", contentType)
+	}
+
+	// Check for BOM
+	responseBody := w.Body.Bytes()
+	if len(responseBody) < 3 {
+		t.Fatalf("Response too short to contain BOM")
+	}
+
+	expectedBOM := []byte{0xEF, 0xBB, 0xBF}
+	actualBOM := responseBody[:3]
+	if !bytes.Equal(actualBOM, expectedBOM) {
+		t.Errorf("UTF-8 BOM mismatch")
+	}
+}
+
+func TestExportConfigCSV_NotFound(t *testing.T) {
+	gin.SetMode(gin.TestMode)
+
+	exportSvc := services.NewExportService(config.ExportConfig{}, nil, nil)
+	handler := NewExportHandler(
+		exportSvc,
+		&mockConfigService{err: errors.New("config not found")},
+		nil,
+	)
+
+	req, _ := http.NewRequest("GET", "/api/configs/nonexistent-uuid/export", nil)
+	w := httptest.NewRecorder()
+
+	c, _ := gin.CreateTestContext(w)
+	c.Request = req
+	c.Params = gin.Params{
+		{Key: "uuid", Value: "nonexistent-uuid"},
+	}
+	c.Set("username", "testuser")
+
+	handler.ExportConfigCSV(c)
+
+	// Should return 404 Not Found
+	if w.Code != http.StatusNotFound {
+		t.Errorf("Expected status 404, got %d", w.Code)
+	}
+
+	// Should return JSON error
+	var errResp map[string]interface{}
+	json.Unmarshal(w.Body.Bytes(), &errResp)
+	if _, hasError := errResp["error"]; !hasError {
+		t.Errorf("Expected error in JSON response")
+	}
+}
+
+func TestExportConfigCSV_EmptyItems(t *testing.T) {
+	gin.SetMode(gin.TestMode)
+
+	// Mock configuration with empty items
+	mockConfig := &models.Configuration{
+		UUID:          "test-uuid",
+		Name:          "Empty Config",
+		OwnerUsername: "testuser",
+		Items:         models.ConfigItems{},
+		CreatedAt:     time.Now(),
+	}
+
+	exportSvc := services.NewExportService(config.ExportConfig{}, nil, nil)
+	handler := NewExportHandler(
+		exportSvc,
+		&mockConfigService{config: mockConfig},
+		nil,
+	)
+
+	req, _ := http.NewRequest("GET", "/api/configs/test-uuid/export", nil)
+	w := httptest.NewRecorder()
+
+	c, _ := gin.CreateTestContext(w)
+	c.Request = req
+	c.Params = gin.Params{
+		{Key: "uuid", Value: "test-uuid"},
+	}
+	c.Set("username", "testuser")
+
+	handler.ExportConfigCSV(c)
+
+	// Should return 400 Bad Request
+	if w.Code != http.StatusBadRequest {
+		t.Errorf("Expected status 400, got %d", w.Code)
+	}
+
+	// Should return JSON error
+	var errResp map[string]interface{}
+	json.Unmarshal(w.Body.Bytes(), &errResp)
+	if _, hasError := errResp["error"]; !hasError {
+		t.Errorf("Expected error in JSON response")
+	}
+}

internal/handlers/pricelist.go

@@ -46,8 +46,30 @@ func (h *PricelistHandler) List(c *gin.Context) {
 		}
 		localPLs = filtered
 	}
-	if activeOnly {
-		// Local cache stores only active snapshots for normal operations.
+	type pricelistWithCount struct {
+		pricelist  localdb.LocalPricelist
+		itemCount  int64
+		usageCount int
+	}
+	withCounts := make([]pricelistWithCount, 0, len(localPLs))
+	for _, lpl := range localPLs {
+		itemCount := h.localDB.CountLocalPricelistItems(lpl.ID)
+		if activeOnly && itemCount == 0 {
+			continue
+		}
+		usageCount := 0
+		if lpl.IsUsed {
+			usageCount = 1
+		}
+		withCounts = append(withCounts, pricelistWithCount{
+			pricelist:  lpl,
+			itemCount:  itemCount,
+			usageCount: usageCount,
+		})
+	}
+	localPLs = localPLs[:0]
+	for _, row := range withCounts {
+		localPLs = append(localPLs, row.pricelist)
 	}
 	sort.SliceStable(localPLs, func(i, j int) bool { return localPLs[i].CreatedAt.After(localPLs[j].CreatedAt) })
 	total := len(localPLs)
@@ -62,10 +84,14 @@ func (h *PricelistHandler) List(c *gin.Context) {
 	pageSlice := localPLs[start:end]
 	summaries := make([]map[string]interface{}, 0, len(pageSlice))
 	for _, lpl := range pageSlice {
-		itemCount := h.localDB.CountLocalPricelistItems(lpl.ID)
+		itemCount := int64(0)
 		usageCount := 0
-		if lpl.IsUsed {
-			usageCount = 1
+		for _, row := range withCounts {
+			if row.pricelist.ID == lpl.ID {
+				itemCount = row.itemCount
+				usageCount = row.usageCount
+				break
+			}
 		}
 		summaries = append(summaries, map[string]interface{}{
 			"id":          lpl.ServerID,
@@ -157,15 +183,11 @@ func (h *PricelistHandler) GetItems(c *gin.Context) {
 	}
 	resultItems := make([]gin.H, 0, len(items))
 	for _, item := range items {
-		category := ""
-		if parts := strings.SplitN(item.LotName, "_", 2); len(parts) > 0 {
-			category = parts[0]
-		}
 		resultItems = append(resultItems, gin.H{
 			"id":            item.ID,
 			"lot_name":      item.LotName,
 			"price":         item.Price,
-			"category":      category,
+			"category":      item.LotCategory,
 			"available_qty": item.AvailableQty,
 			"partnumbers":   []string(item.Partnumbers),
 		})

internal/handlers/pricelist_test.go

@@ -0,0 +1,161 @@
+package handlers
+
+import (
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"path/filepath"
+	"testing"
+	"time"
+
+	"git.mchus.pro/mchus/quoteforge/internal/localdb"
+	"github.com/gin-gonic/gin"
+)
+
+func TestPricelistGetItems_ReturnsLotCategoryFromLocalPricelistItems(t *testing.T) {
+	gin.SetMode(gin.TestMode)
+
+	local, err := localdb.New(filepath.Join(t.TempDir(), "local.db"))
+	if err != nil {
+		t.Fatalf("init local db: %v", err)
+	}
+	t.Cleanup(func() { _ = local.Close() })
+
+	if err := local.SaveLocalPricelist(&localdb.LocalPricelist{
+		ServerID:  1,
+		Source:    "estimate",
+		Version:   "S-2026-02-11-001",
+		Name:      "test",
+		CreatedAt: time.Now(),
+		SyncedAt:  time.Now(),
+		IsUsed:    false,
+	}); err != nil {
+		t.Fatalf("save local pricelist: %v", err)
+	}
+	localPL, err := local.GetLocalPricelistByServerID(1)
+	if err != nil {
+		t.Fatalf("get local pricelist: %v", err)
+	}
+	if err := local.SaveLocalPricelistItems([]localdb.LocalPricelistItem{
+		{
+			PricelistID: localPL.ID,
+			LotName:     "NO_UNDERSCORE_NAME",
+			LotCategory: "CPU",
+			Price:       10,
+		},
+	}); err != nil {
+		t.Fatalf("save local pricelist items: %v", err)
+	}
+
+	h := NewPricelistHandler(local)
+
+	req, _ := http.NewRequest("GET", "/api/pricelists/1/items?page=1&per_page=50", nil)
+	w := httptest.NewRecorder()
+	c, _ := gin.CreateTestContext(w)
+	c.Request = req
+	c.Params = gin.Params{{Key: "id", Value: "1"}}
+
+	h.GetItems(c)
+
+	if w.Code != http.StatusOK {
+		t.Fatalf("expected status 200, got %d: %s", w.Code, w.Body.String())
+	}
+
+	var resp struct {
+		Items []struct {
+			LotName   string `json:"lot_name"`
+			Category  string `json:"category"`
+			UnitPrice any    `json:"price"`
+		} `json:"items"`
+	}
+	if err := json.Unmarshal(w.Body.Bytes(), &resp); err != nil {
+		t.Fatalf("unmarshal response: %v", err)
+	}
+	if len(resp.Items) != 1 {
+		t.Fatalf("expected 1 item, got %d", len(resp.Items))
+	}
+	if resp.Items[0].LotName != "NO_UNDERSCORE_NAME" {
+		t.Fatalf("expected lot_name NO_UNDERSCORE_NAME, got %q", resp.Items[0].LotName)
+	}
+	if resp.Items[0].Category != "CPU" {
+		t.Fatalf("expected category CPU, got %q", resp.Items[0].Category)
+	}
+}
+
+func TestPricelistList_ActiveOnlyExcludesPricelistsWithoutItems(t *testing.T) {
+	gin.SetMode(gin.TestMode)
+
+	local, err := localdb.New(filepath.Join(t.TempDir(), "local_active_only.db"))
+	if err != nil {
+		t.Fatalf("init local db: %v", err)
+	}
+	t.Cleanup(func() { _ = local.Close() })
+
+	if err := local.SaveLocalPricelist(&localdb.LocalPricelist{
+		ServerID:  10,
+		Source:    "estimate",
+		Version:   "E-1",
+		Name:      "with-items",
+		CreatedAt: time.Now().Add(-time.Minute),
+		SyncedAt:  time.Now().Add(-time.Minute),
+	}); err != nil {
+		t.Fatalf("save with-items pricelist: %v", err)
+	}
+	withItems, err := local.GetLocalPricelistByServerID(10)
+	if err != nil {
+		t.Fatalf("load with-items pricelist: %v", err)
+	}
+	if err := local.SaveLocalPricelistItems([]localdb.LocalPricelistItem{
+		{
+			PricelistID: withItems.ID,
+			LotName:     "CPU_X",
+			LotCategory: "CPU",
+			Price:       100,
+		},
+	}); err != nil {
+		t.Fatalf("save with-items pricelist items: %v", err)
+	}
+
+	if err := local.SaveLocalPricelist(&localdb.LocalPricelist{
+		ServerID:  11,
+		Source:    "estimate",
+		Version:   "E-2",
+		Name:      "without-items",
+		CreatedAt: time.Now(),
+		SyncedAt:  time.Now(),
+	}); err != nil {
+		t.Fatalf("save without-items pricelist: %v", err)
+	}
+
+	h := NewPricelistHandler(local)
+
+	req, _ := http.NewRequest("GET", "/api/pricelists?source=estimate&active_only=true", nil)
+	w := httptest.NewRecorder()
+	c, _ := gin.CreateTestContext(w)
+	c.Request = req
+
+	h.List(c)
+
+	if w.Code != http.StatusOK {
+		t.Fatalf("expected status 200, got %d: %s", w.Code, w.Body.String())
+	}
+
+	var resp struct {
+		Pricelists []struct {
+			ID uint `json:"id"`
+		} `json:"pricelists"`
+		Total int `json:"total"`
+	}
+	if err := json.Unmarshal(w.Body.Bytes(), &resp); err != nil {
+		t.Fatalf("unmarshal response: %v", err)
+	}
+	if resp.Total != 1 {
+		t.Fatalf("expected total=1, got %d", resp.Total)
+	}
+	if len(resp.Pricelists) != 1 {
+		t.Fatalf("expected 1 pricelist, got %d", len(resp.Pricelists))
+	}
+	if resp.Pricelists[0].ID != 10 {
+		t.Fatalf("expected pricelist id=10, got %d", resp.Pricelists[0].ID)
+	}
+}

internal/handlers/setup.go

@@ -6,8 +6,6 @@ import (
 	"log/slog"
 	"net"
 	"net/http"
-	"os"
-	"path/filepath"
 	"strconv"
 	"time"
 
@@ -28,7 +26,7 @@ type SetupHandler struct {
 	restartSig chan struct{}
 }
 
-func NewSetupHandler(localDB *localdb.LocalDB, connMgr *db.ConnectionManager, templatesPath string, restartSig chan struct{}) (*SetupHandler, error) {
+func NewSetupHandler(localDB *localdb.LocalDB, connMgr *db.ConnectionManager, _ string, restartSig chan struct{}) (*SetupHandler, error) {
 	funcMap := template.FuncMap{
 		"sub": func(a, b int) int { return a - b },
 		"add": func(a, b int) int { return a + b },
@@ -37,14 +35,9 @@ func NewSetupHandler(localDB *localdb.LocalDB, connMgr *db.ConnectionManager, te
 	templates := make(map[string]*template.Template)
 
 	// Load setup template (standalone, no base needed)
-	setupPath := filepath.Join(templatesPath, "setup.html")
 	var tmpl *template.Template
 	var err error
-	if stat, statErr := os.Stat(templatesPath); statErr == nil && stat.IsDir() {
-		tmpl, err = template.New("").Funcs(funcMap).ParseFiles(setupPath)
-	} else {
-		tmpl, err = template.New("").Funcs(funcMap).ParseFS(qfassets.TemplatesFS, "web/templates/setup.html")
-	}
+	tmpl, err = template.New("").Funcs(funcMap).ParseFS(qfassets.TemplatesFS, "web/templates/setup.html")
 	if err != nil {
 		return nil, fmt.Errorf("parsing setup template: %w", err)
 	}

internal/handlers/sync.go

@@ -6,8 +6,6 @@ import (
 	"html/template"
 	"log/slog"
 	"net/http"
-	"os"
-	"path/filepath"
 	stdsync "sync"
 	"time"
 
@@ -32,16 +30,9 @@ type SyncHandler struct {
 }
 
 // NewSyncHandler creates a new sync handler
-func NewSyncHandler(localDB *localdb.LocalDB, syncService *sync.Service, connMgr *db.ConnectionManager, templatesPath string, autoSyncInterval time.Duration) (*SyncHandler, error) {
+func NewSyncHandler(localDB *localdb.LocalDB, syncService *sync.Service, connMgr *db.ConnectionManager, _ string, autoSyncInterval time.Duration) (*SyncHandler, error) {
 	// Load sync_status partial template
-	partialPath := filepath.Join(templatesPath, "partials", "sync_status.html")
-	var tmpl *template.Template
-	var err error
-	if stat, statErr := os.Stat(templatesPath); statErr == nil && stat.IsDir() {
-		tmpl, err = template.ParseFiles(partialPath)
-	} else {
-		tmpl, err = template.ParseFS(qfassets.TemplatesFS, "web/templates/partials/sync_status.html")
-	}
+	tmpl, err := template.ParseFS(qfassets.TemplatesFS, "web/templates/partials/sync_status.html")
 	if err != nil {
 		return nil, err
 	}
@@ -419,6 +410,26 @@ func (h *SyncHandler) GetPendingChanges(c *gin.Context) {
 	})
 }
 
+// RepairPendingChanges attempts to repair errored pending changes
+// POST /api/sync/repair
+func (h *SyncHandler) RepairPendingChanges(c *gin.Context) {
+	repaired, remainingErrors, err := h.localDB.RepairPendingChanges()
+	if err != nil {
+		slog.Error("repair pending changes failed", "error", err)
+		c.JSON(http.StatusInternalServerError, gin.H{
+			"success": false,
+			"error":   err.Error(),
+		})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{
+		"success":          true,
+		"repaired":         repaired,
+		"remaining_errors": remainingErrors,
+	})
+}
+
 // SyncInfoResponse represents sync information for the modal
 type SyncInfoResponse struct {
 	// Connection

internal/handlers/web.go

@@ -2,8 +2,6 @@ package handlers
 
 import (
 	"html/template"
-	"os"
-	"path/filepath"
 	"strconv"
 
 	qfassets "git.mchus.pro/mchus/quoteforge"
@@ -17,7 +15,7 @@ type WebHandler struct {
 	componentService *services.ComponentService
 }
 
-func NewWebHandler(templatesPath string, componentService *services.ComponentService) (*WebHandler, error) {
+func NewWebHandler(_ string, componentService *services.ComponentService) (*WebHandler, error) {
 	funcMap := template.FuncMap{
 		"sub": func(a, b int) int { return a - b },
 		"add": func(a, b int) int { return a + b },
@@ -60,27 +58,16 @@ func NewWebHandler(templatesPath string, componentService *services.ComponentSer
 	}
 
 	templates := make(map[string]*template.Template)
-	basePath := filepath.Join(templatesPath, "base.html")
-	useDisk := false
-	if stat, statErr := os.Stat(templatesPath); statErr == nil && stat.IsDir() {
-		useDisk = true
-	}
-
 	// Load each page template with base
-	simplePages := []string{"login.html", "configs.html", "projects.html", "project_detail.html", "pricelists.html", "pricelist_detail.html"}
+	simplePages := []string{"login.html", "configs.html", "projects.html", "project_detail.html", "pricelists.html", "pricelist_detail.html", "config_revisions.html"}
 	for _, page := range simplePages {
-		pagePath := filepath.Join(templatesPath, page)
 		var tmpl *template.Template
 		var err error
-		if useDisk {
-			tmpl, err = template.New("").Funcs(funcMap).ParseFiles(basePath, pagePath)
-		} else {
-			tmpl, err = template.New("").Funcs(funcMap).ParseFS(
-				qfassets.TemplatesFS,
-				"web/templates/base.html",
-				"web/templates/"+page,
-			)
-		}
+		tmpl, err = template.New("").Funcs(funcMap).ParseFS(
+			qfassets.TemplatesFS,
+			"web/templates/base.html",
+			"web/templates/"+page,
+		)
 		if err != nil {
 			return nil, err
 		}
@@ -88,20 +75,14 @@ func NewWebHandler(templatesPath string, componentService *services.ComponentSer
 	}
 
 	// Index page needs components_list.html as well
-	indexPath := filepath.Join(templatesPath, "index.html")
-	componentsListPath := filepath.Join(templatesPath, "components_list.html")
 	var indexTmpl *template.Template
 	var err error
-	if useDisk {
-		indexTmpl, err = template.New("").Funcs(funcMap).ParseFiles(basePath, indexPath, componentsListPath)
-	} else {
-		indexTmpl, err = template.New("").Funcs(funcMap).ParseFS(
-			qfassets.TemplatesFS,
-			"web/templates/base.html",
-			"web/templates/index.html",
-			"web/templates/components_list.html",
-		)
-	}
+	indexTmpl, err = template.New("").Funcs(funcMap).ParseFS(
+		qfassets.TemplatesFS,
+		"web/templates/base.html",
+		"web/templates/index.html",
+		"web/templates/components_list.html",
+	)
 	if err != nil {
 		return nil, err
 	}
@@ -110,17 +91,12 @@ func NewWebHandler(templatesPath string, componentService *services.ComponentSer
 	// Load partial templates (no base needed)
 	partials := []string{"components_list.html"}
 	for _, partial := range partials {
-		partialPath := filepath.Join(templatesPath, partial)
 		var tmpl *template.Template
 		var err error
-		if useDisk {
-			tmpl, err = template.New("").Funcs(funcMap).ParseFiles(partialPath)
-		} else {
-			tmpl, err = template.New("").Funcs(funcMap).ParseFS(
-				qfassets.TemplatesFS,
-				"web/templates/"+partial,
-			)
-		}
+		tmpl, err = template.New("").Funcs(funcMap).ParseFS(
+			qfassets.TemplatesFS,
+			"web/templates/"+partial,
+		)
 		if err != nil {
 			return nil, err
 		}
@@ -147,8 +123,8 @@ func (h *WebHandler) render(c *gin.Context, name string, data gin.H) {
 }
 
 func (h *WebHandler) Index(c *gin.Context) {
-	// Redirect to configs page - configurator is accessed via /configurator?uuid=...
-	c.Redirect(302, "/configs")
+	// Redirect to projects page - configurator is accessed via /configurator?uuid=...
+	c.Redirect(302, "/projects")
 }
 
 func (h *WebHandler) Configurator(c *gin.Context) {
@@ -197,6 +173,13 @@ func (h *WebHandler) ProjectDetail(c *gin.Context) {
 	})
 }
 
+func (h *WebHandler) ConfigRevisions(c *gin.Context) {
+	h.render(c, "config_revisions.html", gin.H{
+		"ActivePage": "configs",
+		"ConfigUUID": c.Param("uuid"),
+	})
+}
+
 func (h *WebHandler) Pricelists(c *gin.Context) {
 	h.render(c, "pricelists.html", gin.H{"ActivePage": "pricelists"})
 }

internal/localdb/components.go

@@ -28,14 +28,13 @@ type ComponentSyncResult struct {
 func (l *LocalDB) SyncComponents(mariaDB *gorm.DB) (*ComponentSyncResult, error) {
 	startTime := time.Now()
 
-	// Query to join lot with qt_lot_metadata
+	// Query to join lot with qt_lot_metadata (metadata only, no pricing)
 	// Use LEFT JOIN to include lots without metadata
 	type componentRow struct {
 		LotName        string
 		LotDescription string
 		Category       *string
 		Model          *string
-		CurrentPrice   *float64
 	}
 
 	var rows []componentRow
@@ -44,8 +43,7 @@ func (l *LocalDB) SyncComponents(mariaDB *gorm.DB) (*ComponentSyncResult, error)
 			l.lot_name,
 			l.lot_description,
 			COALESCE(c.code, SUBSTRING_INDEX(l.lot_name, '_', 1)) as category,
-			m.model,
-			m.current_price
+			m.model
 		FROM lot l
 		LEFT JOIN qt_lot_metadata m ON l.lot_name = m.lot_name
 		LEFT JOIN qt_categories c ON m.category_id = c.id
@@ -100,8 +98,6 @@ func (l *LocalDB) SyncComponents(mariaDB *gorm.DB) (*ComponentSyncResult, error)
 			LotDescription: row.LotDescription,
 			Category:       category,
 			Model:          model,
-			CurrentPrice:   row.CurrentPrice,
-			SyncedAt:       syncTime,
 		}
 		components = append(components, comp)
 
@@ -221,11 +217,6 @@ func (l *LocalDB) ListComponents(filter ComponentFilter, offset, limit int) ([]L
 		)
 	}
 
-	// Apply price filter
-	if filter.HasPrice {
-		db = db.Where("current_price IS NOT NULL")
-	}
-
 	// Get total count
 	var total int64
 	if err := db.Model(&LocalComponent{}).Count(&total).Error; err != nil {
@@ -251,6 +242,31 @@ func (l *LocalDB) GetLocalComponent(lotName string) (*LocalComponent, error) {
 	return &component, nil
 }
 
+// GetLocalComponentCategoriesByLotNames returns category for each lot_name in the local component cache.
+// Missing lots are not included in the map; caller is responsible for strict validation.
+func (l *LocalDB) GetLocalComponentCategoriesByLotNames(lotNames []string) (map[string]string, error) {
+	result := make(map[string]string, len(lotNames))
+	if len(lotNames) == 0 {
+		return result, nil
+	}
+
+	type row struct {
+		LotName  string `gorm:"column:lot_name"`
+		Category string `gorm:"column:category"`
+	}
+	var rows []row
+	if err := l.db.Model(&LocalComponent{}).
+		Select("lot_name, category").
+		Where("lot_name IN ?", lotNames).
+		Find(&rows).Error; err != nil {
+		return nil, err
+	}
+	for _, r := range rows {
+		result[r.LotName] = r.Category
+	}
+	return result, nil
+}
+
 // GetLocalComponentCategories returns distinct categories from local components
 func (l *LocalDB) GetLocalComponentCategories() ([]string, error) {
 	var categories []string
@@ -311,99 +327,3 @@ func (l *LocalDB) NeedComponentSync(maxAgeHours int) bool {
 	}
 	return time.Since(*syncTime).Hours() > float64(maxAgeHours)
 }
-
-// UpdateComponentPricesFromPricelist updates current_price in local_components from pricelist items
-// This allows offline price updates using synced pricelists without MariaDB connection
-func (l *LocalDB) UpdateComponentPricesFromPricelist(pricelistID uint) (int, error) {
-	// Get all items from the specified pricelist
-	var items []LocalPricelistItem
-	if err := l.db.Where("pricelist_id = ?", pricelistID).Find(&items).Error; err != nil {
-		return 0, fmt.Errorf("fetching pricelist items: %w", err)
-	}
-
-	if len(items) == 0 {
-		slog.Warn("no items found in pricelist", "pricelist_id", pricelistID)
-		return 0, nil
-	}
-
-	// Update current_price for each component
-	updated := 0
-	err := l.db.Transaction(func(tx *gorm.DB) error {
-		for _, item := range items {
-			result := tx.Model(&LocalComponent{}).
-				Where("lot_name = ?", item.LotName).
-				Update("current_price", item.Price)
-
-			if result.Error != nil {
-				return fmt.Errorf("updating price for %s: %w", item.LotName, result.Error)
-			}
-
-			if result.RowsAffected > 0 {
-				updated++
-			}
-		}
-		return nil
-	})
-
-	if err != nil {
-		return 0, err
-	}
-
-	slog.Info("updated component prices from pricelist",
-		"pricelist_id", pricelistID,
-		"total_items", len(items),
-		"updated_components", updated)
-
-	return updated, nil
-}
-
-// EnsureComponentPricesFromPricelists loads prices from the latest pricelist into local_components
-// if no components exist or all current prices are NULL
-func (l *LocalDB) EnsureComponentPricesFromPricelists() error {
-	// Check if we have any components with prices
-	var count int64
-	if err := l.db.Model(&LocalComponent{}).Where("current_price IS NOT NULL").Count(&count).Error; err != nil {
-		return fmt.Errorf("checking component prices: %w", err)
-	}
-
-	// If we have components with prices, don't load from pricelists
-	if count > 0 {
-		return nil
-	}
-
-	// Check if we have any components at all
-	var totalComponents int64
-	if err := l.db.Model(&LocalComponent{}).Count(&totalComponents).Error; err != nil {
-		return fmt.Errorf("counting components: %w", err)
-	}
-
-	// If we have no components, we need to load them from pricelists
-	if totalComponents == 0 {
-		slog.Info("no components found in local database, loading from latest pricelist")
-		// This would typically be called from the sync service or setup process
-		// For now, we'll just return nil to indicate no action needed
-		return nil
-	}
-
-	// If we have components but no prices, load from latest estimate pricelist.
-	var latestPricelist LocalPricelist
-	if err := l.db.Where("source = ?", "estimate").Order("created_at DESC").First(&latestPricelist).Error; err != nil {
-		if err == gorm.ErrRecordNotFound {
-			slog.Warn("no pricelists found in local database")
-			return nil
-		}
-		return fmt.Errorf("finding latest pricelist: %w", err)
-	}
-
-	// Update prices from the latest pricelist
-	updated, err := l.UpdateComponentPricesFromPricelist(latestPricelist.ID)
-	if err != nil {
-		return fmt.Errorf("updating component prices from pricelist: %w", err)
-	}
-
-	slog.Info("loaded component prices from latest pricelist",
-		"pricelist_id", latestPricelist.ID,
-		"updated_components", updated)
-
-	return nil
-}

internal/localdb/converters.go

@@ -28,6 +28,9 @@ func ConfigurationToLocal(cfg *models.Configuration) *LocalConfiguration {
 		Notes:            cfg.Notes,
 		IsTemplate:       cfg.IsTemplate,
 		ServerCount:      cfg.ServerCount,
+		ServerModel:      cfg.ServerModel,
+		SupportCode:      cfg.SupportCode,
+		Article:          cfg.Article,
 		PricelistID:      cfg.PricelistID,
 		OnlyInStock:      cfg.OnlyInStock,
 		PriceUpdatedAt:   cfg.PriceUpdatedAt,
@@ -72,6 +75,9 @@ func LocalToConfiguration(local *LocalConfiguration) *models.Configuration {
 		Notes:          local.Notes,
 		IsTemplate:     local.IsTemplate,
 		ServerCount:    local.ServerCount,
+		ServerModel:    local.ServerModel,
+		SupportCode:    local.SupportCode,
+		Article:        local.Article,
 		PricelistID:    local.PricelistID,
 		OnlyInStock:    local.OnlyInStock,
 		PriceUpdatedAt: local.PriceUpdatedAt,
@@ -85,6 +91,9 @@ func LocalToConfiguration(local *LocalConfiguration) *models.Configuration {
 		userID := local.OriginalUserID
 		cfg.UserID = &userID
 	}
+	if local.CurrentVersion != nil {
+		cfg.CurrentVersionNo = local.CurrentVersion.VersionNo
+	}
 
 	return cfg
 }
@@ -100,6 +109,8 @@ func ProjectToLocal(project *models.Project) *LocalProject {
 	local := &LocalProject{
 		UUID:          project.UUID,
 		OwnerUsername: project.OwnerUsername,
+		Code:          project.Code,
+		Variant:       project.Variant,
 		Name:          project.Name,
 		TrackerURL:    project.TrackerURL,
 		IsActive:      project.IsActive,
@@ -119,6 +130,8 @@ func LocalToProject(local *LocalProject) *models.Project {
 	project := &models.Project{
 		UUID:          local.UUID,
 		OwnerUsername: local.OwnerUsername,
+		Code:          local.Code,
+		Variant:       local.Variant,
 		Name:          local.Name,
 		TrackerURL:    local.TrackerURL,
 		IsActive:      local.IsActive,
@@ -169,6 +182,7 @@ func PricelistItemToLocal(item *models.PricelistItem, localPricelistID uint) *Lo
 	return &LocalPricelistItem{
 		PricelistID:  localPricelistID,
 		LotName:      item.LotName,
+		LotCategory:  item.LotCategory,
 		Price:        item.Price,
 		AvailableQty: item.AvailableQty,
 		Partnumbers:  partnumbers,
@@ -183,6 +197,7 @@ func LocalToPricelistItem(local *LocalPricelistItem, serverPricelistID uint) *mo
 		ID:           local.ID,
 		PricelistID:  serverPricelistID,
 		LotName:      local.LotName,
+		LotCategory:  local.LotCategory,
 		Price:        local.Price,
 		AvailableQty: local.AvailableQty,
 		Partnumbers:  partnumbers,
@@ -213,17 +228,14 @@ func ComponentToLocal(meta *models.LotMetadata) *LocalComponent {
 		LotDescription: lotDesc,
 		Category:       category,
 		Model:          meta.Model,
-		CurrentPrice:   meta.CurrentPrice,
-		SyncedAt:       time.Now(),
 	}
 }
 
 // LocalToComponent converts LocalComponent to models.LotMetadata
 func LocalToComponent(local *LocalComponent) *models.LotMetadata {
 	return &models.LotMetadata{
-		LotName:      local.LotName,
-		Model:        local.Model,
-		CurrentPrice: local.CurrentPrice,
+		LotName: local.LotName,
+		Model:   local.Model,
 		Lot: &models.Lot{
 			LotName:        local.LotName,
 			LotDescription: local.LotDescription,

internal/localdb/converters_test.go

@@ -0,0 +1,34 @@
+package localdb
+
+import (
+	"testing"
+
+	"git.mchus.pro/mchus/quoteforge/internal/models"
+)
+
+func TestPricelistItemToLocal_PreservesLotCategory(t *testing.T) {
+	item := &models.PricelistItem{
+		LotName:     "CPU_A",
+		LotCategory: "CPU",
+		Price:       10,
+	}
+
+	local := PricelistItemToLocal(item, 123)
+	if local.LotCategory != "CPU" {
+		t.Fatalf("expected LotCategory=CPU, got %q", local.LotCategory)
+	}
+}
+
+func TestLocalToPricelistItem_PreservesLotCategory(t *testing.T) {
+	local := &LocalPricelistItem{
+		LotName:     "CPU_A",
+		LotCategory: "CPU",
+		Price:       10,
+	}
+
+	item := LocalToPricelistItem(local, 456)
+	if item.LotCategory != "CPU" {
+		t.Fatalf("expected LotCategory=CPU, got %q", item.LotCategory)
+	}
+}
+

internal/localdb/local_migrations_test.go

@@ -4,6 +4,8 @@ import (
 	"path/filepath"
 	"testing"
 	"time"
+
+	"github.com/google/uuid"
 )
 
 func TestRunLocalMigrationsBackfillsExistingConfigurations(t *testing.T) {
@@ -125,3 +127,129 @@ func TestRunLocalMigrationsFixesPricelistVersionUniqueIndex(t *testing.T) {
 		t.Fatalf("expected 2 pricelists, got %d", count)
 	}
 }
+
+func TestRunLocalMigrationsDeduplicatesConfigurationVersionsBySpecAndPrice(t *testing.T) {
+	dbPath := filepath.Join(t.TempDir(), "versions_dedup.db")
+
+	local, err := New(dbPath)
+	if err != nil {
+		t.Fatalf("open localdb: %v", err)
+	}
+	t.Cleanup(func() { _ = local.Close() })
+
+	cfg := &LocalConfiguration{
+		UUID:             "dedup-cfg",
+		Name:             "Dedup",
+		Items:            LocalConfigItems{{LotName: "CPU_A", Quantity: 1, UnitPrice: 100}},
+		ServerCount:      1,
+		SyncStatus:       "pending",
+		OriginalUsername: "tester",
+		IsActive:         true,
+	}
+	if err := local.SaveConfiguration(cfg); err != nil {
+		t.Fatalf("save seed config: %v", err)
+	}
+
+	baseV1Data, err := BuildConfigurationSnapshot(cfg)
+	if err != nil {
+		t.Fatalf("build v1 snapshot: %v", err)
+	}
+	baseV1 := LocalConfigurationVersion{
+		ID:                uuid.NewString(),
+		ConfigurationUUID: cfg.UUID,
+		VersionNo:         1,
+		Data:              baseV1Data,
+		AppVersion:        "test",
+		CreatedAt:         time.Now(),
+	}
+	if err := local.DB().Create(&baseV1).Error; err != nil {
+		t.Fatalf("insert base v1: %v", err)
+	}
+	if err := local.DB().Model(&LocalConfiguration{}).
+		Where("uuid = ?", cfg.UUID).
+		Update("current_version_id", baseV1.ID).Error; err != nil {
+		t.Fatalf("set current_version_id to v1: %v", err)
+	}
+
+	v2 := LocalConfigurationVersion{
+		ID:                uuid.NewString(),
+		ConfigurationUUID: cfg.UUID,
+		VersionNo:         2,
+		Data:              baseV1.Data,
+		AppVersion:        "test",
+		CreatedAt:         time.Now().Add(1 * time.Second),
+	}
+	if err := local.DB().Create(&v2).Error; err != nil {
+		t.Fatalf("insert duplicate v2: %v", err)
+	}
+
+	modified := *cfg
+	modified.Items = LocalConfigItems{{LotName: "CPU_A", Quantity: 2, UnitPrice: 100}}
+	total := modified.Items.Total()
+	modified.TotalPrice = &total
+	modified.UpdatedAt = time.Now()
+	v3Data, err := BuildConfigurationSnapshot(&modified)
+	if err != nil {
+		t.Fatalf("build v3 snapshot: %v", err)
+	}
+
+	v3 := LocalConfigurationVersion{
+		ID:                uuid.NewString(),
+		ConfigurationUUID: cfg.UUID,
+		VersionNo:         3,
+		Data:              v3Data,
+		AppVersion:        "test",
+		CreatedAt:         time.Now().Add(2 * time.Second),
+	}
+	if err := local.DB().Create(&v3).Error; err != nil {
+		t.Fatalf("insert v3: %v", err)
+	}
+
+	v4 := LocalConfigurationVersion{
+		ID:                uuid.NewString(),
+		ConfigurationUUID: cfg.UUID,
+		VersionNo:         4,
+		Data:              v3Data,
+		AppVersion:        "test",
+		CreatedAt:         time.Now().Add(3 * time.Second),
+	}
+	if err := local.DB().Create(&v4).Error; err != nil {
+		t.Fatalf("insert duplicate v4: %v", err)
+	}
+
+	if err := local.DB().Model(&LocalConfiguration{}).
+		Where("uuid = ?", cfg.UUID).
+		Update("current_version_id", v4.ID).Error; err != nil {
+		t.Fatalf("point current_version_id to duplicate v4: %v", err)
+	}
+
+	if err := local.DB().Where("id = ?", "2026_02_19_configuration_versions_dedup_spec_price").
+		Delete(&LocalSchemaMigration{}).Error; err != nil {
+		t.Fatalf("delete dedup migration record: %v", err)
+	}
+
+	if err := runLocalMigrations(local.DB()); err != nil {
+		t.Fatalf("rerun local migrations: %v", err)
+	}
+
+	var versions []LocalConfigurationVersion
+	if err := local.DB().Where("configuration_uuid = ?", cfg.UUID).
+		Order("version_no ASC").
+		Find(&versions).Error; err != nil {
+		t.Fatalf("load versions after dedup: %v", err)
+	}
+	if len(versions) != 2 {
+		t.Fatalf("expected 2 versions after dedup, got %d", len(versions))
+	}
+	if versions[0].VersionNo != 1 || versions[1].VersionNo != 3 {
+		t.Fatalf("expected kept version numbers [1,3], got [%d,%d]", versions[0].VersionNo, versions[1].VersionNo)
+	}
+
+	var after LocalConfiguration
+	if err := local.DB().Where("uuid = ?", cfg.UUID).First(&after).Error; err != nil {
+		t.Fatalf("load config after dedup: %v", err)
+	}
+	if after.CurrentVersionID == nil || *after.CurrentVersionID != v3.ID {
+		t.Fatalf("expected current_version_id to point to kept latest version v3")
+	}
+}

internal/localdb/localdb.go

@@ -12,6 +12,7 @@ import (
 	"time"
 
 	"git.mchus.pro/mchus/quoteforge/internal/appmeta"
+	"git.mchus.pro/mchus/quoteforge/internal/appstate"
 	"github.com/glebarez/sqlite"
 	mysqlDriver "github.com/go-sql-driver/mysql"
 	uuidpkg "github.com/google/uuid"
@@ -41,6 +42,49 @@ type LocalDB struct {
 	path string
 }
 
+// ResetData clears local data tables while keeping connection settings.
+// It does not drop schema or connection_settings.
+func ResetData(dbPath string) error {
+	if strings.TrimSpace(dbPath) == "" {
+		return nil
+	}
+	if _, err := os.Stat(dbPath); err != nil {
+		if errors.Is(err, os.ErrNotExist) {
+			return nil
+		}
+		return fmt.Errorf("stat local db: %w", err)
+	}
+
+	db, err := gorm.Open(sqlite.Open(dbPath), &gorm.Config{
+		Logger: logger.Default.LogMode(logger.Silent),
+	})
+	if err != nil {
+		return fmt.Errorf("opening sqlite database: %w", err)
+	}
+
+	// Order does not matter because we use DELETEs without FK constraints in SQLite.
+	tables := []string{
+		"local_projects",
+		"local_configurations",
+		"local_configuration_versions",
+		"local_pricelists",
+		"local_pricelist_items",
+		"local_components",
+		"local_remote_migrations_applied",
+		"local_sync_guard_state",
+		"pending_changes",
+		"app_settings",
+	}
+	for _, table := range tables {
+		if err := db.Exec("DELETE FROM " + table).Error; err != nil {
+			return fmt.Errorf("clear %s: %w", table, err)
+		}
+	}
+
+	slog.Info("local database data reset", "path", dbPath)
+	return nil
+}
+
 // New creates a new LocalDB instance
 func New(dbPath string) (*LocalDB, error) {
 	// Ensure directory exists
@@ -49,6 +93,14 @@ func New(dbPath string) (*LocalDB, error) {
 		return nil, fmt.Errorf("creating data directory: %w", err)
 	}
 
+	if cfgPath, err := appstate.ResolveConfigPathNearDB("", dbPath); err == nil {
+		if _, err := appstate.EnsureRotatingLocalBackup(dbPath, cfgPath); err != nil {
+			return nil, fmt.Errorf("backup local data: %w", err)
+		}
+	} else {
+		return nil, fmt.Errorf("resolve config path: %w", err)
+	}
+
 	db, err := gorm.Open(sqlite.Open(dbPath), &gorm.Config{
 		Logger: logger.Default.LogMode(logger.Silent),
 	})
@@ -56,10 +108,31 @@ func New(dbPath string) (*LocalDB, error) {
 		return nil, fmt.Errorf("opening sqlite database: %w", err)
 	}
 
+	if err := ensureLocalProjectsTable(db); err != nil {
+		return nil, fmt.Errorf("ensure local_projects table: %w", err)
+	}
+
+	// Preflight: ensure local_projects has non-null UUIDs before AutoMigrate rebuilds tables.
+	if db.Migrator().HasTable(&LocalProject{}) {
+		if !db.Migrator().HasColumn(&LocalProject{}, "uuid") {
+			if err := db.Exec(`ALTER TABLE local_projects ADD COLUMN uuid TEXT`).Error; err != nil {
+				return nil, fmt.Errorf("adding local_projects.uuid: %w", err)
+			}
+		}
+		var ids []uint
+		if err := db.Raw(`SELECT id FROM local_projects WHERE uuid IS NULL OR uuid = ''`).Scan(&ids).Error; err != nil {
+			return nil, fmt.Errorf("finding local_projects without uuid: %w", err)
+		}
+		for _, id := range ids {
+			if err := db.Exec(`UPDATE local_projects SET uuid = ? WHERE id = ?`, uuidpkg.New().String(), id).Error; err != nil {
+				return nil, fmt.Errorf("backfilling local_projects.uuid: %w", err)
+			}
+		}
+	}
+
 	// Auto-migrate all local tables
 	if err := db.AutoMigrate(
 		&ConnectionSettings{},
-		&LocalProject{},
 		&LocalConfiguration{},
 		&LocalConfigurationVersion{},
 		&LocalPricelist{},
@@ -84,6 +157,38 @@ func New(dbPath string) (*LocalDB, error) {
 	}, nil
 }
 
+func ensureLocalProjectsTable(db *gorm.DB) error {
+	if db.Migrator().HasTable(&LocalProject{}) {
+		return nil
+	}
+
+	if err := db.Exec(`
+CREATE TABLE local_projects (
+	id INTEGER PRIMARY KEY AUTOINCREMENT,
+	uuid TEXT NOT NULL UNIQUE,
+	server_id INTEGER NULL,
+	owner_username TEXT NOT NULL,
+	code TEXT NOT NULL,
+	variant TEXT NOT NULL DEFAULT '',
+	name TEXT NULL,
+	tracker_url TEXT NULL,
+	is_active INTEGER NOT NULL DEFAULT 1,
+	is_system INTEGER NOT NULL DEFAULT 0,
+	created_at DATETIME,
+	updated_at DATETIME,
+	synced_at DATETIME NULL,
+	sync_status TEXT DEFAULT 'local'
+)`).Error; err != nil {
+		return err
+	}
+
+	_ = db.Exec(`CREATE INDEX IF NOT EXISTS idx_local_projects_owner_username ON local_projects(owner_username)`).Error
+	_ = db.Exec(`CREATE INDEX IF NOT EXISTS idx_local_projects_is_active ON local_projects(is_active)`).Error
+	_ = db.Exec(`CREATE INDEX IF NOT EXISTS idx_local_projects_is_system ON local_projects(is_system)`).Error
+	_ = db.Exec(`CREATE UNIQUE INDEX IF NOT EXISTS idx_local_projects_code_variant ON local_projects(code, variant)`).Error
+	return nil
+}
+
 // HasSettings returns true if connection settings exist
 func (l *LocalDB) HasSettings() bool {
 	var count int64
@@ -258,7 +363,8 @@ func (l *LocalDB) EnsureDefaultProject(ownerUsername string) (*LocalProject, err
 	project = &LocalProject{
 		UUID:          uuidpkg.NewString(),
 		OwnerUsername: "",
-		Name:          "Без проекта",
+		Code:          "Без проекта",
+		Name:          ptrString("Без проекта"),
 		IsActive:      true,
 		IsSystem:      true,
 		CreatedAt:     now,
@@ -286,7 +392,8 @@ func (l *LocalDB) ConsolidateSystemProjects() (int64, error) {
 			canonical = LocalProject{
 				UUID:          uuidpkg.NewString(),
 				OwnerUsername: "",
-				Name:          "Без проекта",
+				Code:          "Без проекта",
+				Name:          ptrString("Без проекта"),
 				IsActive:      true,
 				IsSystem:      true,
 				CreatedAt:     now,
@@ -367,6 +474,10 @@ WHERE (
 	return tx.RowsAffected, tx.Error
 }
 
+func ptrString(value string) *string {
+	return &value
+}
+
 // BackfillConfigurationProjects ensures every configuration has project_uuid set.
 // If missing, it assigns system project "Без проекта" for configuration owner.
 func (l *LocalDB) BackfillConfigurationProjects(defaultOwner string) error {
@@ -425,18 +536,36 @@ func (l *LocalDB) ListConfigurationsWithFilters(status string, search string, of
 	query := l.db.Model(&LocalConfiguration{})
 	switch status {
 	case "active":
-		query = query.Where("is_active = ?", true)
+		query = query.Where("local_configurations.is_active = ?", true)
 	case "archived":
-		query = query.Where("is_active = ?", false)
+		query = query.Where("local_configurations.is_active = ?", false)
 	case "all", "":
 		// no-op
 	default:
-		query = query.Where("is_active = ?", true)
+		query = query.Where("local_configurations.is_active = ?", true)
 	}
 
 	search = strings.TrimSpace(search)
 	if search != "" {
-		query = query.Where("LOWER(name) LIKE ?", "%"+strings.ToLower(search)+"%")
+		needle := "%" + strings.ToLower(search) + "%"
+		hasProjectsTable := l.db.Migrator().HasTable(&LocalProject{})
+		hasServerModel := l.db.Migrator().HasColumn(&LocalConfiguration{}, "server_model")
+
+		conditions := []string{"LOWER(local_configurations.name) LIKE ?"}
+		args := []interface{}{needle}
+
+		if hasProjectsTable {
+			query = query.Joins("LEFT JOIN local_projects lp ON lp.uuid = local_configurations.project_uuid")
+			conditions = append(conditions, "LOWER(COALESCE(lp.name, '')) LIKE ?")
+			args = append(args, needle)
+		}
+
+		if hasServerModel {
+			conditions = append(conditions, "LOWER(COALESCE(local_configurations.server_model, '')) LIKE ?")
+			args = append(args, needle)
+		}
+
+		query = query.Where(strings.Join(conditions, " OR "), args...)
 	}
 
 	var total int64
@@ -445,7 +574,7 @@ func (l *LocalDB) ListConfigurationsWithFilters(status string, search string, of
 	}
 
 	var configs []LocalConfiguration
-	if err := query.Order("created_at DESC").Offset(offset).Limit(limit).Find(&configs).Error; err != nil {
+	if err := query.Order("local_configurations.created_at DESC").Offset(offset).Limit(limit).Find(&configs).Error; err != nil {
 		return nil, 0, err
 	}
 	return configs, total, nil
@@ -563,7 +692,11 @@ func (l *LocalDB) CountLocalPricelists() int64 {
 // GetLatestLocalPricelist returns the most recently synced pricelist
 func (l *LocalDB) GetLatestLocalPricelist() (*LocalPricelist, error) {
 	var pricelist LocalPricelist
-	if err := l.db.Where("source = ?", "estimate").Order("created_at DESC").First(&pricelist).Error; err != nil {
+	if err := l.db.
+		Where("source = ?", "estimate").
+		Where("EXISTS (SELECT 1 FROM local_pricelist_items WHERE local_pricelist_items.pricelist_id = local_pricelists.id)").
+		Order("created_at DESC, id DESC").
+		First(&pricelist).Error; err != nil {
 		return nil, err
 	}
 	return &pricelist, nil
@@ -572,7 +705,11 @@ func (l *LocalDB) GetLatestLocalPricelist() (*LocalPricelist, error) {
 // GetLatestLocalPricelistBySource returns the most recently synced pricelist for a source.
 func (l *LocalDB) GetLatestLocalPricelistBySource(source string) (*LocalPricelist, error) {
 	var pricelist LocalPricelist
-	if err := l.db.Where("source = ?", source).Order("created_at DESC").First(&pricelist).Error; err != nil {
+	if err := l.db.
+		Where("source = ?", source).
+		Where("EXISTS (SELECT 1 FROM local_pricelist_items WHERE local_pricelist_items.pricelist_id = local_pricelists.id)").
+		Order("created_at DESC, id DESC").
+		First(&pricelist).Error; err != nil {
 		return nil, err
 	}
 	return &pricelist, nil
@@ -645,6 +782,17 @@ func (l *LocalDB) CountLocalPricelistItems(pricelistID uint) int64 {
 	return count
 }
 
+// CountLocalPricelistItemsWithEmptyCategory returns the number of items for a pricelist with missing lot_category.
+func (l *LocalDB) CountLocalPricelistItemsWithEmptyCategory(pricelistID uint) (int64, error) {
+	var count int64
+	if err := l.db.Model(&LocalPricelistItem{}).
+		Where("pricelist_id = ? AND (lot_category IS NULL OR TRIM(lot_category) = '')", pricelistID).
+		Count(&count).Error; err != nil {
+		return 0, err
+	}
+	return count, nil
+}
+
 // SaveLocalPricelistItems saves pricelist items to local SQLite
 func (l *LocalDB) SaveLocalPricelistItems(items []LocalPricelistItem) error {
 	if len(items) == 0 {
@@ -665,6 +813,30 @@ func (l *LocalDB) SaveLocalPricelistItems(items []LocalPricelistItem) error {
 	return nil
 }
 
+// ReplaceLocalPricelistItems atomically replaces all items for a pricelist.
+func (l *LocalDB) ReplaceLocalPricelistItems(pricelistID uint, items []LocalPricelistItem) error {
+	return l.db.Transaction(func(tx *gorm.DB) error {
+		if err := tx.Where("pricelist_id = ?", pricelistID).Delete(&LocalPricelistItem{}).Error; err != nil {
+			return err
+		}
+		if len(items) == 0 {
+			return nil
+		}
+
+		batchSize := 500
+		for i := 0; i < len(items); i += batchSize {
+			end := i + batchSize
+			if end > len(items) {
+				end = len(items)
+			}
+			if err := tx.CreateInBatches(items[i:end], batchSize).Error; err != nil {
+				return err
+			}
+		}
+		return nil
+	})
+}
+
 // GetLocalPricelistItems returns items for a local pricelist
 func (l *LocalDB) GetLocalPricelistItems(pricelistID uint) ([]LocalPricelistItem, error) {
 	var items []LocalPricelistItem
@@ -684,6 +856,36 @@ func (l *LocalDB) GetLocalPriceForLot(pricelistID uint, lotName string) (float64
 	return item.Price, nil
 }
 
+// GetLocalLotCategoriesByServerPricelistID returns lot_category for each lot_name from a local pricelist resolved by server ID.
+// Missing lots are not included in the map; caller is responsible for strict validation.
+func (l *LocalDB) GetLocalLotCategoriesByServerPricelistID(serverPricelistID uint, lotNames []string) (map[string]string, error) {
+	result := make(map[string]string, len(lotNames))
+	if serverPricelistID == 0 || len(lotNames) == 0 {
+		return result, nil
+	}
+
+	localPL, err := l.GetLocalPricelistByServerID(serverPricelistID)
+	if err != nil {
+		return nil, err
+	}
+
+	type row struct {
+		LotName     string `gorm:"column:lot_name"`
+		LotCategory string `gorm:"column:lot_category"`
+	}
+	var rows []row
+	if err := l.db.Model(&LocalPricelistItem{}).
+		Select("lot_name, lot_category").
+		Where("pricelist_id = ? AND lot_name IN ?", localPL.ID, lotNames).
+		Find(&rows).Error; err != nil {
+		return nil, err
+	}
+	for _, r := range rows {
+		result[r.LotName] = r.LotCategory
+	}
+	return result, nil
+}
+
 // MarkPricelistAsUsed marks a pricelist as used by a configuration
 func (l *LocalDB) MarkPricelistAsUsed(pricelistID uint, isUsed bool) error {
 	return l.db.Model(&LocalPricelist{}).Where("id = ?", pricelistID).
@@ -847,6 +1049,145 @@ func (l *LocalDB) GetPendingCount() int64 {
 	return l.CountPendingChanges()
 }
 
+// RepairPendingChanges attempts to fix errored pending changes by validating and correcting data.
+// Returns the number of changes repaired and a list of errors that couldn't be fixed.
+func (l *LocalDB) RepairPendingChanges() (int, []string, error) {
+	var erroredChanges []PendingChange
+	if err := l.db.Where("last_error != ?", "").Find(&erroredChanges).Error; err != nil {
+		return 0, nil, fmt.Errorf("fetching errored changes: %w", err)
+	}
+
+	if len(erroredChanges) == 0 {
+		return 0, nil, nil
+	}
+
+	repaired := 0
+	var remainingErrors []string
+
+	for _, change := range erroredChanges {
+		var repairErr error
+		switch change.EntityType {
+		case "project":
+			repairErr = l.repairProjectChange(&change)
+		case "configuration":
+			repairErr = l.repairConfigurationChange(&change)
+		default:
+			repairErr = fmt.Errorf("unknown entity type: %s", change.EntityType)
+		}
+
+		if repairErr != nil {
+			remainingErrors = append(remainingErrors, fmt.Sprintf("%s %s %s: %v",
+				change.Operation, change.EntityType, change.EntityUUID[:8], repairErr))
+			continue
+		}
+
+		// Clear error and reset attempts
+		if err := l.db.Model(&PendingChange{}).Where("id = ?", change.ID).Updates(map[string]interface{}{
+			"last_error": "",
+			"attempts":   0,
+		}).Error; err != nil {
+			remainingErrors = append(remainingErrors, fmt.Sprintf("clearing error for %s: %v", change.EntityUUID[:8], err))
+			continue
+		}
+
+		repaired++
+	}
+
+	return repaired, remainingErrors, nil
+}
+
+// repairProjectChange validates and fixes project data.
+// Note: This only validates local data. Server-side conflicts (like duplicate code+variant)
+// are handled by sync service layer with deduplication logic.
+func (l *LocalDB) repairProjectChange(change *PendingChange) error {
+	project, err := l.GetProjectByUUID(change.EntityUUID)
+	if err != nil {
+		return fmt.Errorf("project not found locally: %w", err)
+	}
+
+	modified := false
+
+	// Fix Code: must be non-empty
+	if strings.TrimSpace(project.Code) == "" {
+		if project.Name != nil && strings.TrimSpace(*project.Name) != "" {
+			project.Code = strings.TrimSpace(*project.Name)
+		} else {
+			project.Code = project.UUID[:8]
+		}
+		modified = true
+	}
+
+	// Fix Name: use Code if empty
+	if project.Name == nil || strings.TrimSpace(*project.Name) == "" {
+		name := project.Code
+		project.Name = &name
+		modified = true
+	}
+
+	// Fix OwnerUsername: must be non-empty
+	if strings.TrimSpace(project.OwnerUsername) == "" {
+		project.OwnerUsername = l.GetDBUser()
+		if project.OwnerUsername == "" {
+			return fmt.Errorf("cannot determine owner username")
+		}
+		modified = true
+	}
+
+	// Check for local duplicates with same (code, variant)
+	var duplicate LocalProject
+	err = l.db.Where("code = ? AND variant = ? AND uuid != ?", project.Code, project.Variant, project.UUID).
+		First(&duplicate).Error
+	if err == nil {
+		// Found local duplicate - deduplicate by appending UUID suffix to variant
+		if project.Variant == "" {
+			project.Variant = project.UUID[:8]
+		} else {
+			project.Variant = project.Variant + "-" + project.UUID[:8]
+		}
+		modified = true
+	}
+
+	if modified {
+		if err := l.SaveProject(project); err != nil {
+			return fmt.Errorf("saving repaired project: %w", err)
+		}
+	}
+
+	return nil
+}
+
+// repairConfigurationChange validates and fixes configuration data
+func (l *LocalDB) repairConfigurationChange(change *PendingChange) error {
+	config, err := l.GetConfigurationByUUID(change.EntityUUID)
+	if err != nil {
+		return fmt.Errorf("configuration not found locally: %w", err)
+	}
+
+	modified := false
+
+	// Check if referenced project exists
+	if config.ProjectUUID != nil && *config.ProjectUUID != "" {
+		_, err := l.GetProjectByUUID(*config.ProjectUUID)
+		if err != nil {
+			// Project doesn't exist locally - use default system project
+			systemProject, sysErr := l.EnsureDefaultProject(config.OriginalUsername)
+			if sysErr != nil {
+				return fmt.Errorf("getting system project: %w", sysErr)
+			}
+			config.ProjectUUID = &systemProject.UUID
+			modified = true
+		}
+	}
+
+	if modified {
+		if err := l.SaveConfiguration(config); err != nil {
+			return fmt.Errorf("saving repaired configuration: %w", err)
+		}
+	}
+
+	return nil
+}
+
 // GetRemoteMigrationApplied returns a locally applied remote migration by ID.
 func (l *LocalDB) GetRemoteMigrationApplied(id string) (*LocalRemoteMigrationApplied, error) {
 	var migration LocalRemoteMigrationApplied

internal/localdb/migration_projects_test.go

@@ -51,8 +51,8 @@ func TestRunLocalMigrationsBackfillsDefaultProject(t *testing.T) {
 	if err != nil {
 		t.Fatalf("get system project: %v", err)
 	}
-	if project.Name != "Без проекта" {
-		t.Fatalf("expected system project name, got %q", project.Name)
+	if project.Name == nil || *project.Name != "Без проекта" {
+		t.Fatalf("expected system project name, got %v", project.Name)
 	}
 	if !project.IsSystem {
 		t.Fatalf("expected system project flag")

internal/localdb/migrations.go

@@ -58,6 +58,56 @@ var localMigrations = []localMigration{
 		name: "Backfill source for local pricelists and create source indexes",
 		run:  backfillLocalPricelistSource,
 	},
+	{
+		id:   "2026_02_09_drop_component_unused_fields",
+		name: "Remove current_price and synced_at from local_components (unused fields)",
+		run:  dropComponentUnusedFields,
+	},
+	{
+		id:   "2026_02_09_add_warehouse_competitor_pricelists",
+		name: "Add warehouse_pricelist_id and competitor_pricelist_id to local_configurations",
+		run:  addWarehouseCompetitorPriceLists,
+	},
+	{
+		id:   "2026_02_11_local_pricelist_item_category",
+		name: "Add lot_category to local_pricelist_items and create indexes",
+		run:  addLocalPricelistItemCategoryAndIndexes,
+	},
+	{
+		id:   "2026_02_11_local_config_article",
+		name: "Add article to local_configurations",
+		run:  addLocalConfigurationArticle,
+	},
+	{
+		id:   "2026_02_11_local_config_server_model",
+		name: "Add server_model to local_configurations",
+		run:  addLocalConfigurationServerModel,
+	},
+	{
+		id:   "2026_02_11_local_config_support_code",
+		name: "Add support_code to local_configurations",
+		run:  addLocalConfigurationSupportCode,
+	},
+	{
+		id:   "2026_02_13_local_project_code",
+		name: "Add project code to local_projects and backfill",
+		run:  addLocalProjectCode,
+	},
+	{
+		id:   "2026_02_13_local_project_variant",
+		name: "Add project variant to local_projects and backfill",
+		run:  addLocalProjectVariant,
+	},
+	{
+		id:   "2026_02_13_local_project_name_nullable",
+		name: "Allow NULL project names in local_projects",
+		run:  allowLocalProjectNameNull,
+	},
+	{
+		id:   "2026_02_19_configuration_versions_dedup_spec_price",
+		name: "Deduplicate configuration revisions by spec+price",
+		run:  deduplicateConfigurationVersionsBySpecAndPrice,
+	},
 }
 
 func runLocalMigrations(db *gorm.DB) error {
@@ -194,7 +244,8 @@ func ensureDefaultProjectTx(tx *gorm.DB, ownerUsername string) (*LocalProject, e
 	project = LocalProject{
 		UUID:          uuid.NewString(),
 		OwnerUsername: ownerUsername,
-		Name:          "Без проекта",
+		Code:          "Без проекта",
+		Name:          ptrString("Без проекта"),
 		IsActive:      true,
 		IsSystem:      true,
 		CreatedAt:     now,
@@ -208,6 +259,139 @@ func ensureDefaultProjectTx(tx *gorm.DB, ownerUsername string) (*LocalProject, e
 	return &project, nil
 }
 
+func addLocalProjectCode(tx *gorm.DB) error {
+	if err := tx.Exec(`ALTER TABLE local_projects ADD COLUMN code TEXT`).Error; err != nil {
+		if !strings.Contains(strings.ToLower(err.Error()), "duplicate") &&
+			!strings.Contains(strings.ToLower(err.Error()), "exists") {
+			return err
+		}
+	}
+
+	// Drop unique index if it already exists to allow de-duplication updates.
+	if err := tx.Exec(`DROP INDEX IF EXISTS idx_local_projects_code`).Error; err != nil {
+		return err
+	}
+
+	// Copy code from current project name.
+	if err := tx.Exec(`
+UPDATE local_projects
+SET code = TRIM(COALESCE(name, ''))`).Error; err != nil {
+		return err
+	}
+
+	// Ensure any remaining blanks have a unique fallback.
+	if err := tx.Exec(`
+UPDATE local_projects
+SET code = 'P-' || uuid
+WHERE code IS NULL OR TRIM(code) = ''`).Error; err != nil {
+		return err
+	}
+
+	// De-duplicate codes: OPS-1948-2, OPS-1948-3...
+	if err := tx.Exec(`
+WITH ranked AS (
+	SELECT id, code,
+	       ROW_NUMBER() OVER (PARTITION BY code ORDER BY id) AS rn
+	FROM local_projects
+)
+UPDATE local_projects
+SET code = code || '-' || (SELECT rn FROM ranked WHERE ranked.id = local_projects.id)
+WHERE id IN (SELECT id FROM ranked WHERE rn > 1)`).Error; err != nil {
+		return err
+	}
+
+	// Create unique index for project codes (ignore if exists).
+	if err := tx.Exec(`CREATE UNIQUE INDEX IF NOT EXISTS idx_local_projects_code ON local_projects(code)`).Error; err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func addLocalProjectVariant(tx *gorm.DB) error {
+	if err := tx.Exec(`ALTER TABLE local_projects ADD COLUMN variant TEXT NOT NULL DEFAULT ''`).Error; err != nil {
+		if !strings.Contains(strings.ToLower(err.Error()), "duplicate") &&
+			!strings.Contains(strings.ToLower(err.Error()), "exists") {
+			return err
+		}
+	}
+
+	// Drop legacy code index if present.
+	if err := tx.Exec(`DROP INDEX IF EXISTS idx_local_projects_code`).Error; err != nil {
+		return err
+	}
+
+	// Reset code from name and clear variant.
+	if err := tx.Exec(`
+UPDATE local_projects
+SET code = TRIM(COALESCE(name, '')),
+    variant = ''`).Error; err != nil {
+		return err
+	}
+
+	// De-duplicate by assigning variant numbers: 2,3...
+	if err := tx.Exec(`
+WITH ranked AS (
+	SELECT id, code,
+	       ROW_NUMBER() OVER (PARTITION BY code ORDER BY id) AS rn
+	FROM local_projects
+)
+UPDATE local_projects
+SET variant = CASE
+	WHEN (SELECT rn FROM ranked WHERE ranked.id = local_projects.id) = 1 THEN ''
+	ELSE '-' || CAST((SELECT rn FROM ranked WHERE ranked.id = local_projects.id) AS TEXT)
+END`).Error; err != nil {
+		return err
+	}
+
+	if err := tx.Exec(`CREATE UNIQUE INDEX IF NOT EXISTS idx_local_projects_code_variant ON local_projects(code, variant)`).Error; err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func allowLocalProjectNameNull(tx *gorm.DB) error {
+	if err := tx.Exec(`ALTER TABLE local_projects RENAME TO local_projects_old`).Error; err != nil {
+		return err
+	}
+
+	if err := tx.Exec(`
+CREATE TABLE local_projects (
+	id INTEGER PRIMARY KEY AUTOINCREMENT,
+	uuid TEXT NOT NULL UNIQUE,
+	server_id INTEGER NULL,
+	owner_username TEXT NOT NULL,
+	code TEXT NOT NULL,
+	variant TEXT NOT NULL DEFAULT '',
+	name TEXT NULL,
+	tracker_url TEXT NULL,
+	is_active INTEGER NOT NULL DEFAULT 1,
+	is_system INTEGER NOT NULL DEFAULT 0,
+	created_at DATETIME,
+	updated_at DATETIME,
+	synced_at DATETIME NULL,
+	sync_status TEXT DEFAULT 'local'
+)`).Error; err != nil {
+		return err
+	}
+
+	_ = tx.Exec(`CREATE INDEX IF NOT EXISTS idx_local_projects_owner_username ON local_projects(owner_username)`).Error
+	_ = tx.Exec(`CREATE INDEX IF NOT EXISTS idx_local_projects_is_active ON local_projects(is_active)`).Error
+	_ = tx.Exec(`CREATE INDEX IF NOT EXISTS idx_local_projects_is_system ON local_projects(is_system)`).Error
+	_ = tx.Exec(`CREATE UNIQUE INDEX IF NOT EXISTS idx_local_projects_code_variant ON local_projects(code, variant)`).Error
+
+	if err := tx.Exec(`
+INSERT INTO local_projects (id, uuid, server_id, owner_username, code, variant, name, tracker_url, is_active, is_system, created_at, updated_at, synced_at, sync_status)
+SELECT id, uuid, server_id, owner_username, code, variant, name, tracker_url, is_active, is_system, created_at, updated_at, synced_at, sync_status
+FROM local_projects_old`).Error; err != nil {
+		return err
+	}
+
+	_ = tx.Exec(`DROP TABLE local_projects_old`).Error
+	return nil
+}
+
 func backfillConfigurationPricelists(tx *gorm.DB) error {
 	var latest LocalPricelist
 	if err := tx.Where("source = ?", "estimate").Order("created_at DESC").First(&latest).Error; err != nil {
@@ -249,6 +433,93 @@ func chooseNonZeroTime(candidate time.Time, fallback time.Time) time.Time {
 	return candidate
 }
 
+func deduplicateConfigurationVersionsBySpecAndPrice(tx *gorm.DB) error {
+	var configs []LocalConfiguration
+	if err := tx.Select("uuid", "current_version_id").Find(&configs).Error; err != nil {
+		return fmt.Errorf("load configurations for revision deduplication: %w", err)
+	}
+
+	var removedTotal int
+	for i := range configs {
+		cfg := configs[i]
+
+		var versions []LocalConfigurationVersion
+		if err := tx.Where("configuration_uuid = ?", cfg.UUID).
+			Order("version_no ASC, created_at ASC").
+			Find(&versions).Error; err != nil {
+			return fmt.Errorf("load versions for %s: %w", cfg.UUID, err)
+		}
+		if len(versions) < 2 {
+			continue
+		}
+
+		deleteIDs := make([]string, 0)
+		deleteSet := make(map[string]struct{})
+		kept := make([]LocalConfigurationVersion, 0, len(versions))
+		var prevKey string
+		hasPrev := false
+
+		for _, version := range versions {
+			snapshotCfg, err := DecodeConfigurationSnapshot(version.Data)
+			if err != nil {
+				// Keep malformed snapshots untouched and reset chain to avoid accidental removals.
+				kept = append(kept, version)
+				hasPrev = false
+				continue
+			}
+
+			key, err := BuildConfigurationSpecPriceFingerprint(snapshotCfg)
+			if err != nil {
+				kept = append(kept, version)
+				hasPrev = false
+				continue
+			}
+
+			if !hasPrev || key != prevKey {
+				kept = append(kept, version)
+				prevKey = key
+				hasPrev = true
+				continue
+			}
+
+			deleteIDs = append(deleteIDs, version.ID)
+			deleteSet[version.ID] = struct{}{}
+		}
+
+		if len(deleteIDs) == 0 {
+			continue
+		}
+
+		if err := tx.Where("id IN ?", deleteIDs).Delete(&LocalConfigurationVersion{}).Error; err != nil {
+			return fmt.Errorf("delete duplicate versions for %s: %w", cfg.UUID, err)
+		}
+		removedTotal += len(deleteIDs)
+
+		latestKeptID := kept[len(kept)-1].ID
+		if cfg.CurrentVersionID == nil || *cfg.CurrentVersionID == "" {
+			if err := tx.Model(&LocalConfiguration{}).
+				Where("uuid = ?", cfg.UUID).
+				Update("current_version_id", latestKeptID).Error; err != nil {
+				return fmt.Errorf("set missing current_version_id for %s: %w", cfg.UUID, err)
+			}
+			continue
+		}
+
+		if _, deleted := deleteSet[*cfg.CurrentVersionID]; deleted {
+			if err := tx.Model(&LocalConfiguration{}).
+				Where("uuid = ?", cfg.UUID).
+				Update("current_version_id", latestKeptID).Error; err != nil {
+				return fmt.Errorf("repair current_version_id for %s: %w", cfg.UUID, err)
+			}
+		}
+	}
+
+	if removedTotal > 0 {
+		slog.Info("deduplicated configuration revisions", "removed_versions", removedTotal)
+	}
+	return nil
+}
+
 func fixLocalPricelistIndexes(tx *gorm.DB) error {
 	type indexRow struct {
 		Name   string `gorm:"column:name"`
@@ -316,3 +587,222 @@ func backfillLocalPricelistSource(tx *gorm.DB) error {
 
 	return nil
 }
+
+func dropComponentUnusedFields(tx *gorm.DB) error {
+	// Check if columns exist
+	type columnInfo struct {
+		Name string `gorm:"column:name"`
+	}
+
+	var columns []columnInfo
+	if err := tx.Raw(`
+		SELECT name FROM pragma_table_info('local_components')
+		WHERE name IN ('current_price', 'synced_at')
+	`).Scan(&columns).Error; err != nil {
+		return fmt.Errorf("check columns existence: %w", err)
+	}
+
+	if len(columns) == 0 {
+		slog.Info("unused fields already removed from local_components")
+		return nil
+	}
+
+	// SQLite: recreate table without current_price and synced_at
+	if err := tx.Exec(`
+		CREATE TABLE local_components_new (
+			lot_name TEXT PRIMARY KEY,
+			lot_description TEXT,
+			category TEXT,
+			model TEXT
+		)
+	`).Error; err != nil {
+		return fmt.Errorf("create new local_components table: %w", err)
+	}
+
+	if err := tx.Exec(`
+		INSERT INTO local_components_new (lot_name, lot_description, category, model)
+		SELECT lot_name, lot_description, category, model
+		FROM local_components
+	`).Error; err != nil {
+		return fmt.Errorf("copy data to new table: %w", err)
+	}
+
+	if err := tx.Exec(`DROP TABLE local_components`).Error; err != nil {
+		return fmt.Errorf("drop old table: %w", err)
+	}
+
+	if err := tx.Exec(`ALTER TABLE local_components_new RENAME TO local_components`).Error; err != nil {
+		return fmt.Errorf("rename new table: %w", err)
+	}
+
+	slog.Info("dropped current_price and synced_at columns from local_components")
+	return nil
+}
+
+func addWarehouseCompetitorPriceLists(tx *gorm.DB) error {
+	// Check if columns exist
+	type columnInfo struct {
+		Name string `gorm:"column:name"`
+	}
+
+	var columns []columnInfo
+	if err := tx.Raw(`
+		SELECT name FROM pragma_table_info('local_configurations')
+		WHERE name IN ('warehouse_pricelist_id', 'competitor_pricelist_id')
+	`).Scan(&columns).Error; err != nil {
+		return fmt.Errorf("check columns existence: %w", err)
+	}
+
+	if len(columns) == 2 {
+		slog.Info("warehouse and competitor pricelist columns already exist")
+		return nil
+	}
+
+	// Add columns if they don't exist
+	if err := tx.Exec(`
+		ALTER TABLE local_configurations
+		ADD COLUMN warehouse_pricelist_id INTEGER
+	`).Error; err != nil {
+		// Column might already exist, ignore
+		if !strings.Contains(err.Error(), "duplicate column") {
+			return fmt.Errorf("add warehouse_pricelist_id column: %w", err)
+		}
+	}
+
+	if err := tx.Exec(`
+		ALTER TABLE local_configurations
+		ADD COLUMN competitor_pricelist_id INTEGER
+	`).Error; err != nil {
+		// Column might already exist, ignore
+		if !strings.Contains(err.Error(), "duplicate column") {
+			return fmt.Errorf("add competitor_pricelist_id column: %w", err)
+		}
+	}
+
+	// Create indexes
+	if err := tx.Exec(`
+		CREATE INDEX IF NOT EXISTS idx_local_configurations_warehouse_pricelist
+		ON local_configurations(warehouse_pricelist_id)
+	`).Error; err != nil {
+		return fmt.Errorf("create warehouse pricelist index: %w", err)
+	}
+
+	if err := tx.Exec(`
+		CREATE INDEX IF NOT EXISTS idx_local_configurations_competitor_pricelist
+		ON local_configurations(competitor_pricelist_id)
+	`).Error; err != nil {
+		return fmt.Errorf("create competitor pricelist index: %w", err)
+	}
+
+	slog.Info("added warehouse and competitor pricelist fields to local_configurations")
+	return nil
+}
+
+func addLocalPricelistItemCategoryAndIndexes(tx *gorm.DB) error {
+	type columnInfo struct {
+		Name string `gorm:"column:name"`
+	}
+
+	var columns []columnInfo
+	if err := tx.Raw(`
+		SELECT name FROM pragma_table_info('local_pricelist_items')
+		WHERE name IN ('lot_category')
+	`).Scan(&columns).Error; err != nil {
+		return fmt.Errorf("check local_pricelist_items(lot_category) existence: %w", err)
+	}
+
+	if len(columns) == 0 {
+		if err := tx.Exec(`
+			ALTER TABLE local_pricelist_items
+			ADD COLUMN lot_category TEXT
+		`).Error; err != nil {
+			return fmt.Errorf("add local_pricelist_items.lot_category: %w", err)
+		}
+		slog.Info("added lot_category to local_pricelist_items")
+	}
+
+	if err := tx.Exec(`
+		CREATE INDEX IF NOT EXISTS idx_local_pricelist_items_pricelist_lot
+		ON local_pricelist_items(pricelist_id, lot_name)
+	`).Error; err != nil {
+		return fmt.Errorf("ensure idx_local_pricelist_items_pricelist_lot: %w", err)
+	}
+
+	if err := tx.Exec(`
+		CREATE INDEX IF NOT EXISTS idx_local_pricelist_items_lot_category
+		ON local_pricelist_items(lot_category)
+	`).Error; err != nil {
+		return fmt.Errorf("ensure idx_local_pricelist_items_lot_category: %w", err)
+	}
+
+	return nil
+}
+
+func addLocalConfigurationArticle(tx *gorm.DB) error {
+	type columnInfo struct {
+		Name string `gorm:"column:name"`
+	}
+	var columns []columnInfo
+	if err := tx.Raw(`
+		SELECT name FROM pragma_table_info('local_configurations')
+		WHERE name IN ('article')
+	`).Scan(&columns).Error; err != nil {
+		return fmt.Errorf("check local_configurations(article) existence: %w", err)
+	}
+	if len(columns) == 0 {
+		if err := tx.Exec(`
+			ALTER TABLE local_configurations
+			ADD COLUMN article TEXT
+		`).Error; err != nil {
+			return fmt.Errorf("add local_configurations.article: %w", err)
+		}
+		slog.Info("added article to local_configurations")
+	}
+	return nil
+}
+
+func addLocalConfigurationServerModel(tx *gorm.DB) error {
+	type columnInfo struct {
+		Name string `gorm:"column:name"`
+	}
+	var columns []columnInfo
+	if err := tx.Raw(`
+		SELECT name FROM pragma_table_info('local_configurations')
+		WHERE name IN ('server_model')
+	`).Scan(&columns).Error; err != nil {
+		return fmt.Errorf("check local_configurations(server_model) existence: %w", err)
+	}
+	if len(columns) == 0 {
+		if err := tx.Exec(`
+			ALTER TABLE local_configurations
+			ADD COLUMN server_model TEXT
+		`).Error; err != nil {
+			return fmt.Errorf("add local_configurations.server_model: %w", err)
+		}
+		slog.Info("added server_model to local_configurations")
+	}
+	return nil
+}
+
+func addLocalConfigurationSupportCode(tx *gorm.DB) error {
+	type columnInfo struct {
+		Name string `gorm:"column:name"`
+	}
+	var columns []columnInfo
+	if err := tx.Raw(`
+		SELECT name FROM pragma_table_info('local_configurations')
+		WHERE name IN ('support_code')
+	`).Scan(&columns).Error; err != nil {
+		return fmt.Errorf("check local_configurations(support_code) existence: %w", err)
+	}
+	if len(columns) == 0 {
+		if err := tx.Exec(`
+			ALTER TABLE local_configurations
+			ADD COLUMN support_code TEXT
+		`).Error; err != nil {
+			return fmt.Errorf("add local_configurations.support_code: %w", err)
+		}
+		slog.Info("added support_code to local_configurations")
+	}
+	return nil
+}

internal/localdb/models.go

@@ -96,8 +96,13 @@ type LocalConfiguration struct {
 	Notes            string                      `json:"notes"`
 	IsTemplate       bool                        `gorm:"default:false" json:"is_template"`
 	ServerCount      int                         `gorm:"default:1" json:"server_count"`
-	PricelistID      *uint                       `gorm:"index" json:"pricelist_id,omitempty"`
-	OnlyInStock      bool                        `gorm:"default:false" json:"only_in_stock"`
+	ServerModel      string                      `gorm:"size:100" json:"server_model,omitempty"`
+	SupportCode      string                      `gorm:"size:20" json:"support_code,omitempty"`
+	Article          string                      `gorm:"size:80" json:"article,omitempty"`
+	PricelistID           *uint                       `gorm:"index" json:"pricelist_id,omitempty"`
+	WarehousePricelistID  *uint                       `gorm:"index" json:"warehouse_pricelist_id,omitempty"`
+	CompetitorPricelistID *uint                       `gorm:"index" json:"competitor_pricelist_id,omitempty"`
+	OnlyInStock           bool                        `gorm:"default:false" json:"only_in_stock"`
 	PriceUpdatedAt   *time.Time                  `gorm:"type:timestamp" json:"price_updated_at,omitempty"`
 	CreatedAt        time.Time                   `json:"created_at"`
 	UpdatedAt        time.Time                   `json:"updated_at"`
@@ -118,7 +123,9 @@ type LocalProject struct {
 	UUID          string     `gorm:"uniqueIndex;not null" json:"uuid"`
 	ServerID      *uint      `json:"server_id,omitempty"`
 	OwnerUsername string     `gorm:"not null;index" json:"owner_username"`
-	Name          string     `gorm:"not null" json:"name"`
+	Code          string     `gorm:"not null;index:idx_local_projects_code_variant,priority:1" json:"code"`
+	Variant       string     `gorm:"default:'';index:idx_local_projects_code_variant,priority:2" json:"variant"`
+	Name          *string    `json:"name,omitempty"`
 	TrackerURL    string     `json:"tracker_url"`
 	IsActive      bool       `gorm:"default:true;index" json:"is_active"`
 	IsSystem      bool       `gorm:"default:false;index" json:"is_system"`
@@ -170,6 +177,7 @@ type LocalPricelistItem struct {
 	ID           uint            `gorm:"primaryKey;autoIncrement" json:"id"`
 	PricelistID  uint            `gorm:"not null;index" json:"pricelist_id"`
 	LotName      string          `gorm:"not null" json:"lot_name"`
+	LotCategory  string          `gorm:"column:lot_category" json:"lot_category,omitempty"`
 	Price        float64         `gorm:"not null" json:"price"`
 	AvailableQty *float64        `json:"available_qty,omitempty"`
 	Partnumbers  LocalStringList `gorm:"type:text" json:"partnumbers,omitempty"`
@@ -179,14 +187,13 @@ func (LocalPricelistItem) TableName() string {
 	return "local_pricelist_items"
 }
 
-// LocalComponent stores cached components for offline search
+// LocalComponent stores cached components for offline search (metadata only)
+// All pricing is now sourced from local_pricelist_items based on configuration pricelist selection
 type LocalComponent struct {
-	LotName        string    `gorm:"primaryKey" json:"lot_name"`
-	LotDescription string    `json:"lot_description"`
-	Category       string    `json:"category"`
-	Model          string    `json:"model"`
-	CurrentPrice   *float64  `json:"current_price"`
-	SyncedAt       time.Time `json:"synced_at"`
+	LotName        string `gorm:"primaryKey" json:"lot_name"`
+	LotDescription string `json:"lot_description"`
+	Category       string `json:"category"`
+	Model          string `json:"model"`
 }
 
 func (LocalComponent) TableName() string {

internal/localdb/pricelist_latest_test.go

@@ -0,0 +1,128 @@
+package localdb
+
+import (
+	"path/filepath"
+	"testing"
+	"time"
+)
+
+func TestGetLatestLocalPricelistBySource_SkipsPricelistWithoutItems(t *testing.T) {
+	local, err := New(filepath.Join(t.TempDir(), "latest_without_items.db"))
+	if err != nil {
+		t.Fatalf("open localdb: %v", err)
+	}
+	t.Cleanup(func() { _ = local.Close() })
+
+	base := time.Now().Add(-time.Minute)
+	withItems := &LocalPricelist{
+		ServerID:  1001,
+		Source:    "estimate",
+		Version:   "E-1",
+		Name:      "with-items",
+		CreatedAt: base,
+		SyncedAt:  base,
+	}
+	if err := local.SaveLocalPricelist(withItems); err != nil {
+		t.Fatalf("save pricelist with items: %v", err)
+	}
+	storedWithItems, err := local.GetLocalPricelistByServerID(withItems.ServerID)
+	if err != nil {
+		t.Fatalf("load pricelist with items: %v", err)
+	}
+	if err := local.SaveLocalPricelistItems([]LocalPricelistItem{
+		{
+			PricelistID: storedWithItems.ID,
+			LotName:     "CPU_A",
+			Price:       100,
+		},
+	}); err != nil {
+		t.Fatalf("save pricelist items: %v", err)
+	}
+
+	withoutItems := &LocalPricelist{
+		ServerID:  1002,
+		Source:    "estimate",
+		Version:   "E-2",
+		Name:      "without-items",
+		CreatedAt: base.Add(2 * time.Second),
+		SyncedAt:  base.Add(2 * time.Second),
+	}
+	if err := local.SaveLocalPricelist(withoutItems); err != nil {
+		t.Fatalf("save pricelist without items: %v", err)
+	}
+
+	got, err := local.GetLatestLocalPricelistBySource("estimate")
+	if err != nil {
+		t.Fatalf("GetLatestLocalPricelistBySource: %v", err)
+	}
+	if got.ServerID != withItems.ServerID {
+		t.Fatalf("expected server_id=%d, got %d", withItems.ServerID, got.ServerID)
+	}
+}
+
+func TestGetLatestLocalPricelistBySource_TieBreaksByID(t *testing.T) {
+	local, err := New(filepath.Join(t.TempDir(), "latest_tie_break.db"))
+	if err != nil {
+		t.Fatalf("open localdb: %v", err)
+	}
+	t.Cleanup(func() { _ = local.Close() })
+
+	base := time.Now().Add(-time.Minute)
+	first := &LocalPricelist{
+		ServerID:  2001,
+		Source:    "warehouse",
+		Version:   "S-1",
+		Name:      "first",
+		CreatedAt: base,
+		SyncedAt:  base,
+	}
+	if err := local.SaveLocalPricelist(first); err != nil {
+		t.Fatalf("save first pricelist: %v", err)
+	}
+	storedFirst, err := local.GetLocalPricelistByServerID(first.ServerID)
+	if err != nil {
+		t.Fatalf("load first pricelist: %v", err)
+	}
+	if err := local.SaveLocalPricelistItems([]LocalPricelistItem{
+		{
+			PricelistID: storedFirst.ID,
+			LotName:     "CPU_A",
+			Price:       101,
+		},
+	}); err != nil {
+		t.Fatalf("save first items: %v", err)
+	}
+
+	second := &LocalPricelist{
+		ServerID:  2002,
+		Source:    "warehouse",
+		Version:   "S-2",
+		Name:      "second",
+		CreatedAt: base,
+		SyncedAt:  base,
+	}
+	if err := local.SaveLocalPricelist(second); err != nil {
+		t.Fatalf("save second pricelist: %v", err)
+	}
+	storedSecond, err := local.GetLocalPricelistByServerID(second.ServerID)
+	if err != nil {
+		t.Fatalf("load second pricelist: %v", err)
+	}
+	if err := local.SaveLocalPricelistItems([]LocalPricelistItem{
+		{
+			PricelistID: storedSecond.ID,
+			LotName:     "CPU_A",
+			Price:       102,
+		},
+	}); err != nil {
+		t.Fatalf("save second items: %v", err)
+	}
+
+	got, err := local.GetLatestLocalPricelistBySource("warehouse")
+	if err != nil {
+		t.Fatalf("GetLatestLocalPricelistBySource: %v", err)
+	}
+	if got.ServerID != second.ServerID {
+		t.Fatalf("expected server_id=%d, got %d", second.ServerID, got.ServerID)
+	}
+}

internal/localdb/snapshots.go

@@ -3,6 +3,7 @@ package localdb
 import (
 	"encoding/json"
 	"fmt"
+	"sort"
 	"time"
 )
 
@@ -22,6 +23,9 @@ func BuildConfigurationSnapshot(localCfg *LocalConfiguration) (string, error) {
 		"notes":              localCfg.Notes,
 		"is_template":        localCfg.IsTemplate,
 		"server_count":       localCfg.ServerCount,
+		"server_model":       localCfg.ServerModel,
+		"support_code":       localCfg.SupportCode,
+		"article":            localCfg.Article,
 		"pricelist_id":       localCfg.PricelistID,
 		"only_in_stock":      localCfg.OnlyInStock,
 		"price_updated_at":   localCfg.PriceUpdatedAt,
@@ -52,6 +56,9 @@ func DecodeConfigurationSnapshot(data string) (*LocalConfiguration, error) {
 		Notes            string           `json:"notes"`
 		IsTemplate       bool             `json:"is_template"`
 		ServerCount      int              `json:"server_count"`
+		ServerModel      string           `json:"server_model"`
+		SupportCode      string           `json:"support_code"`
+		Article          string           `json:"article"`
 		PricelistID      *uint            `json:"pricelist_id"`
 		OnlyInStock      bool             `json:"only_in_stock"`
 		PriceUpdatedAt   *time.Time       `json:"price_updated_at"`
@@ -78,6 +85,9 @@ func DecodeConfigurationSnapshot(data string) (*LocalConfiguration, error) {
 		Notes:            snapshot.Notes,
 		IsTemplate:       snapshot.IsTemplate,
 		ServerCount:      snapshot.ServerCount,
+		ServerModel:      snapshot.ServerModel,
+		SupportCode:      snapshot.SupportCode,
+		Article:          snapshot.Article,
 		PricelistID:      snapshot.PricelistID,
 		OnlyInStock:      snapshot.OnlyInStock,
 		PriceUpdatedAt:   snapshot.PriceUpdatedAt,
@@ -85,3 +95,51 @@ func DecodeConfigurationSnapshot(data string) (*LocalConfiguration, error) {
 		OriginalUsername: snapshot.OriginalUsername,
 	}, nil
 }
+
+type configurationSpecPriceFingerprint struct {
+	Items       []configurationSpecPriceFingerprintItem `json:"items"`
+	ServerCount int                                     `json:"server_count"`
+	TotalPrice  *float64                                `json:"total_price,omitempty"`
+	CustomPrice *float64                                `json:"custom_price,omitempty"`
+}
+
+type configurationSpecPriceFingerprintItem struct {
+	LotName   string  `json:"lot_name"`
+	Quantity  int     `json:"quantity"`
+	UnitPrice float64 `json:"unit_price"`
+}
+
+// BuildConfigurationSpecPriceFingerprint returns a stable JSON key based on
+// spec + price fields only, used for revision deduplication.
+func BuildConfigurationSpecPriceFingerprint(localCfg *LocalConfiguration) (string, error) {
+	items := make([]configurationSpecPriceFingerprintItem, 0, len(localCfg.Items))
+	for _, item := range localCfg.Items {
+		items = append(items, configurationSpecPriceFingerprintItem{
+			LotName:   item.LotName,
+			Quantity:  item.Quantity,
+			UnitPrice: item.UnitPrice,
+		})
+	}
+	sort.Slice(items, func(i, j int) bool {
+		if items[i].LotName != items[j].LotName {
+			return items[i].LotName < items[j].LotName
+		}
+		if items[i].Quantity != items[j].Quantity {
+			return items[i].Quantity < items[j].Quantity
+		}
+		return items[i].UnitPrice < items[j].UnitPrice
+	})
+
+	payload := configurationSpecPriceFingerprint{
+		Items:       items,
+		ServerCount: localCfg.ServerCount,
+		TotalPrice:  localCfg.TotalPrice,
+		CustomPrice: localCfg.CustomPrice,
+	}
+
+	raw, err := json.Marshal(payload)
+	if err != nil {
+		return "", fmt.Errorf("marshal spec+price fingerprint: %w", err)
+	}
+	return string(raw), nil
+}

internal/middleware/cors.go

@@ -1,22 +1,55 @@
 package middleware
 
 import (
+	"net"
+	"net/http"
+	"net/url"
+	"strings"
+
 	"github.com/gin-gonic/gin"
 )
 
 func CORS() gin.HandlerFunc {
 	return func(c *gin.Context) {
-		c.Header("Access-Control-Allow-Origin", "*")
-		c.Header("Access-Control-Allow-Methods", "GET, POST, PUT, PATCH, DELETE, OPTIONS")
-		c.Header("Access-Control-Allow-Headers", "Origin, Content-Type, Accept, Authorization")
-		c.Header("Access-Control-Expose-Headers", "Content-Length, Content-Disposition")
-		c.Header("Access-Control-Max-Age", "86400")
+		origin := strings.TrimSpace(c.GetHeader("Origin"))
+		if origin != "" {
+			if isLoopbackOrigin(origin) {
+				c.Header("Access-Control-Allow-Origin", origin)
+				c.Header("Vary", "Origin")
+				c.Header("Access-Control-Allow-Methods", "GET, POST, PUT, PATCH, DELETE, OPTIONS")
+				c.Header("Access-Control-Allow-Headers", "Origin, Content-Type, Accept, Authorization")
+				c.Header("Access-Control-Expose-Headers", "Content-Length, Content-Disposition")
+				c.Header("Access-Control-Max-Age", "86400")
+			} else if c.Request.Method == http.MethodOptions {
+				c.AbortWithStatus(http.StatusForbidden)
+				return
+			}
+		}
 
-		if c.Request.Method == "OPTIONS" {
-			c.AbortWithStatus(204)
+		if c.Request.Method == http.MethodOptions {
+			c.AbortWithStatus(http.StatusNoContent)
 			return
 		}
 
 		c.Next()
 	}
 }
+
+func isLoopbackOrigin(origin string) bool {
+	u, err := url.Parse(origin)
+	if err != nil {
+		return false
+	}
+	if u.Scheme != "http" && u.Scheme != "https" {
+		return false
+	}
+	host := strings.TrimSpace(u.Hostname())
+	if host == "" {
+		return false
+	}
+	if strings.EqualFold(host, "localhost") {
+		return true
+	}
+	ip := net.ParseIP(host)
+	return ip != nil && ip.IsLoopback()
+}

internal/models/configuration.go

@@ -53,6 +53,9 @@ type Configuration struct {
 	Notes                 string      `gorm:"type:text" json:"notes"`
 	IsTemplate            bool        `gorm:"default:false" json:"is_template"`
 	ServerCount           int         `gorm:"default:1" json:"server_count"`
+	ServerModel           string      `gorm:"size:100" json:"server_model,omitempty"`
+	SupportCode           string      `gorm:"size:20" json:"support_code,omitempty"`
+	Article               string      `gorm:"size:80" json:"article,omitempty"`
 	PricelistID           *uint       `gorm:"index" json:"pricelist_id,omitempty"`
 	WarehousePricelistID  *uint       `gorm:"index" json:"warehouse_pricelist_id,omitempty"`
 	CompetitorPricelistID *uint       `gorm:"index" json:"competitor_pricelist_id,omitempty"`
@@ -60,6 +63,7 @@ type Configuration struct {
 	OnlyInStock           bool        `gorm:"default:false" json:"only_in_stock"`
 	PriceUpdatedAt        *time.Time  `gorm:"type:timestamp" json:"price_updated_at,omitempty"`
 	CreatedAt             time.Time   `gorm:"autoCreateTime" json:"created_at"`
+	CurrentVersionNo      int         `gorm:"-" json:"current_version_no,omitempty"`
 
 	User *User `gorm:"foreignKey:UserID" json:"user,omitempty"`
 }

internal/models/pricelist.go

@@ -55,6 +55,7 @@ type PricelistItem struct {
 	ID          uint    `gorm:"primaryKey" json:"id"`
 	PricelistID uint    `gorm:"not null;index:idx_pricelist_lot" json:"pricelist_id"`
 	LotName     string  `gorm:"size:255;not null;index:idx_pricelist_lot" json:"lot_name"`
+	LotCategory string  `gorm:"column:lot_category;size:50" json:"lot_category,omitempty"`
 	Price       float64 `gorm:"type:decimal(12,2);not null" json:"price"`
 	PriceMethod string  `gorm:"size:20" json:"price_method"`
 

internal/models/project.go

@@ -6,7 +6,9 @@ type Project struct {
 	ID            uint      `gorm:"primaryKey;autoIncrement" json:"id"`
 	UUID          string    `gorm:"size:36;uniqueIndex;not null" json:"uuid"`
 	OwnerUsername string    `gorm:"size:100;not null;index" json:"owner_username"`
-	Name          string    `gorm:"size:200;not null" json:"name"`
+	Code          string    `gorm:"size:100;not null;index:idx_qt_projects_code_variant,priority:1" json:"code"`
+	Variant       string    `gorm:"size:100;not null;default:'';index:idx_qt_projects_code_variant,priority:2" json:"variant"`
+	Name          *string   `gorm:"size:200" json:"name,omitempty"`
 	TrackerURL    string    `gorm:"size:500" json:"tracker_url"`
 	IsActive      bool      `gorm:"default:true;index" json:"is_active"`
 	IsSystem      bool      `gorm:"default:false;index" json:"is_system"`

internal/repository/pricelist.go

@@ -3,10 +3,13 @@ package repository
 import (
 	"errors"
 	"fmt"
+	"log/slog"
+	"sort"
 	"strconv"
 	"strings"
 	"time"
 
+	"git.mchus.pro/mchus/quoteforge/internal/lotmatch"
 	"git.mchus.pro/mchus/quoteforge/internal/models"
 	"gorm.io/gorm"
 )
@@ -38,7 +41,7 @@ func (r *PricelistRepository) ListBySource(source string, offset, limit int) ([]
 	}
 
 	var pricelists []models.Pricelist
-	if err := query.Order("created_at DESC").Offset(offset).Limit(limit).Find(&pricelists).Error; err != nil {
+	if err := query.Order("created_at DESC, id DESC").Offset(offset).Limit(limit).Find(&pricelists).Error; err != nil {
 		return nil, 0, fmt.Errorf("listing pricelists: %w", err)
 	}
 
@@ -65,7 +68,7 @@ func (r *PricelistRepository) ListActiveBySource(source string, offset, limit in
 	}
 
 	var pricelists []models.Pricelist
-	if err := query.Order("created_at DESC").Offset(offset).Limit(limit).Find(&pricelists).Error; err != nil {
+	if err := query.Order("created_at DESC, id DESC").Offset(offset).Limit(limit).Find(&pricelists).Error; err != nil {
 		return nil, 0, fmt.Errorf("listing active pricelists: %w", err)
 	}
 
@@ -146,7 +149,11 @@ func (r *PricelistRepository) GetLatestActive() (*models.Pricelist, error) {
 // GetLatestActiveBySource returns the most recent active pricelist by source.
 func (r *PricelistRepository) GetLatestActiveBySource(source string) (*models.Pricelist, error) {
 	var pricelist models.Pricelist
-	if err := r.db.Where("is_active = ? AND source = ?", true, source).Order("created_at DESC").First(&pricelist).Error; err != nil {
+	if err := r.db.
+		Where("is_active = ? AND source = ?", true, source).
+		Where("EXISTS (SELECT 1 FROM qt_pricelist_items WHERE qt_pricelist_items.pricelist_id = qt_pricelists.id)").
+		Order("created_at DESC, id DESC").
+		First(&pricelist).Error; err != nil {
 		return nil, fmt.Errorf("getting latest pricelist: %w", err)
 	}
 	return &pricelist, nil
@@ -236,16 +243,97 @@ func (r *PricelistRepository) GetItems(pricelistID uint, offset, limit int, sear
 		if err := r.db.Where("lot_name = ?", items[i].LotName).First(&lot).Error; err == nil {
 			items[i].LotDescription = lot.LotDescription
 		}
-		// Parse category from lot_name (e.g., "CPU_AMD_9654" -> "CPU")
-		parts := strings.SplitN(items[i].LotName, "_", 2)
-		if len(parts) >= 1 {
-			items[i].Category = parts[0]
-		}
+		items[i].Category = strings.TrimSpace(items[i].LotCategory)
+	}
+
+	// Stock/partnumber enrichment is optional for pricelist item listing.
+	// Return base pricelist rows (lot_name/price/category) even when DB user lacks
+	// access to stock mapping tables (e.g. lot_partnumbers, stock_log).
+	if err := r.enrichItemsWithStock(items); err != nil {
+		slog.Warn("pricelist items stock enrichment skipped", "pricelist_id", pricelistID, "error", err)
 	}
 
 	return items, total, nil
 }
 
+func (r *PricelistRepository) enrichItemsWithStock(items []models.PricelistItem) error {
+	if len(items) == 0 {
+		return nil
+	}
+
+	resolver, err := lotmatch.NewLotResolverFromDB(r.db)
+	if err != nil {
+		return err
+	}
+
+	type stockRow struct {
+		Partnumber string   `gorm:"column:partnumber"`
+		Qty        *float64 `gorm:"column:qty"`
+	}
+	rows := make([]stockRow, 0)
+	if err := r.db.Raw(`
+		SELECT s.partnumber, s.qty
+		FROM stock_log s
+		INNER JOIN (
+			SELECT partnumber, MAX(date) AS max_date
+			FROM stock_log
+			GROUP BY partnumber
+		) latest ON latest.partnumber = s.partnumber AND latest.max_date = s.date
+		WHERE s.qty IS NOT NULL
+	`).Scan(&rows).Error; err != nil {
+		return err
+	}
+
+	lotTotals := make(map[string]float64, len(items))
+	lotPartnumbers := make(map[string][]string, len(items))
+	seenPartnumbers := make(map[string]map[string]struct{}, len(items))
+
+	for i := range rows {
+		row := rows[i]
+		if strings.TrimSpace(row.Partnumber) == "" {
+			continue
+		}
+		lotName, _, resolveErr := resolver.Resolve(row.Partnumber)
+		if resolveErr != nil || strings.TrimSpace(lotName) == "" {
+			continue
+		}
+
+		if row.Qty != nil {
+			lotTotals[lotName] += *row.Qty
+		}
+
+		pn := strings.TrimSpace(row.Partnumber)
+		if pn == "" {
+			continue
+		}
+		if _, ok := seenPartnumbers[lotName]; !ok {
+			seenPartnumbers[lotName] = make(map[string]struct{}, 4)
+		}
+		key := strings.ToLower(pn)
+		if _, exists := seenPartnumbers[lotName][key]; exists {
+			continue
+		}
+		seenPartnumbers[lotName][key] = struct{}{}
+		lotPartnumbers[lotName] = append(lotPartnumbers[lotName], pn)
+	}
+
+	for i := range items {
+		lotName := items[i].LotName
+		if qty, ok := lotTotals[lotName]; ok {
+			qtyCopy := qty
+			items[i].AvailableQty = &qtyCopy
+		}
+		if partnumbers := lotPartnumbers[lotName]; len(partnumbers) > 0 {
+			sort.Slice(partnumbers, func(a, b int) bool {
+				return strings.ToLower(partnumbers[a]) < strings.ToLower(partnumbers[b])
+			})
+			items[i].Partnumbers = partnumbers
+		}
+	}
+
+	return nil
+}
+
 // GetLotNames returns distinct lot names from pricelist items.
 func (r *PricelistRepository) GetLotNames(pricelistID uint) ([]string, error) {
 	var lotNames []string

internal/repository/pricelist_test.go

@@ -126,6 +126,101 @@ func TestGetItems_WarehouseAvailableQtyUsesPrefixResolver(t *testing.T) {
 	}
 }
 
+func TestGetLatestActiveBySource_SkipsPricelistsWithoutItems(t *testing.T) {
+	repo := newTestPricelistRepository(t)
+	db := repo.db
+	ts := time.Now().Add(-time.Minute)
+	source := "test-estimate-skip-empty"
+
+	emptyLatest := models.Pricelist{
+		Source:    source,
+		Version:   "E-empty",
+		CreatedBy: "test",
+		IsActive:  true,
+		CreatedAt: ts.Add(2 * time.Second),
+	}
+	if err := db.Create(&emptyLatest).Error; err != nil {
+		t.Fatalf("create empty pricelist: %v", err)
+	}
+
+	withItems := models.Pricelist{
+		Source:    source,
+		Version:   "E-with-items",
+		CreatedBy: "test",
+		IsActive:  true,
+		CreatedAt: ts,
+	}
+	if err := db.Create(&withItems).Error; err != nil {
+		t.Fatalf("create pricelist with items: %v", err)
+	}
+	if err := db.Create(&models.PricelistItem{
+		PricelistID: withItems.ID,
+		LotName:     "CPU_A",
+		Price:       100,
+	}).Error; err != nil {
+		t.Fatalf("create pricelist item: %v", err)
+	}
+
+	got, err := repo.GetLatestActiveBySource(source)
+	if err != nil {
+		t.Fatalf("GetLatestActiveBySource: %v", err)
+	}
+	if got.ID != withItems.ID {
+		t.Fatalf("expected pricelist with items id=%d, got id=%d", withItems.ID, got.ID)
+	}
+}
+
+func TestGetLatestActiveBySource_TieBreaksByID(t *testing.T) {
+	repo := newTestPricelistRepository(t)
+	db := repo.db
+	ts := time.Now().Add(-time.Minute)
+	source := "test-warehouse-tie-break"
+
+	first := models.Pricelist{
+		Source:    source,
+		Version:   "S-1",
+		CreatedBy: "test",
+		IsActive:  true,
+		CreatedAt: ts,
+	}
+	if err := db.Create(&first).Error; err != nil {
+		t.Fatalf("create first pricelist: %v", err)
+	}
+	if err := db.Create(&models.PricelistItem{
+		PricelistID: first.ID,
+		LotName:     "CPU_A",
+		Price:       101,
+	}).Error; err != nil {
+		t.Fatalf("create first item: %v", err)
+	}
+
+	second := models.Pricelist{
+		Source:    source,
+		Version:   "S-2",
+		CreatedBy: "test",
+		IsActive:  true,
+		CreatedAt: ts,
+	}
+	if err := db.Create(&second).Error; err != nil {
+		t.Fatalf("create second pricelist: %v", err)
+	}
+	if err := db.Create(&models.PricelistItem{
+		PricelistID: second.ID,
+		LotName:     "CPU_A",
+		Price:       102,
+	}).Error; err != nil {
+		t.Fatalf("create second item: %v", err)
+	}
+
+	got, err := repo.GetLatestActiveBySource(source)
+	if err != nil {
+		t.Fatalf("GetLatestActiveBySource: %v", err)
+	}
+	if got.ID != second.ID {
+		t.Fatalf("expected later inserted pricelist id=%d, got id=%d", second.ID, got.ID)
+	}
+}
+
 func newTestPricelistRepository(t *testing.T) *PricelistRepository {
 	t.Helper()
 

internal/repository/project.go

@@ -27,6 +27,8 @@ func (r *ProjectRepository) UpsertByUUID(project *models.Project) error {
 		Columns: []clause.Column{{Name: "uuid"}},
 		DoUpdates: clause.AssignmentColumns([]string{
 			"owner_username",
+			"code",
+			"variant",
 			"name",
 			"tracker_url",
 			"is_active",

internal/repository/unified.go

@@ -83,10 +83,6 @@ func (r *UnifiedRepo) getComponentsOffline(filter ComponentFilter, offset, limit
 		search := "%" + filter.Search + "%"
 		query = query.Where("lot_name LIKE ? OR lot_description LIKE ? OR model LIKE ?", search, search, search)
 	}
-	if filter.HasPrice {
-		query = query.Where("current_price IS NOT NULL AND current_price > 0")
-	}
-
 	var total int64
 	query.Count(&total)
 
@@ -96,8 +92,6 @@ func (r *UnifiedRepo) getComponentsOffline(filter ComponentFilter, offset, limit
 		sortDir = "DESC"
 	}
 	switch filter.SortField {
-	case "current_price":
-		query = query.Order("current_price " + sortDir)
 	case "lot_name":
 		query = query.Order("lot_name " + sortDir)
 	default:
@@ -112,9 +106,8 @@ func (r *UnifiedRepo) getComponentsOffline(filter ComponentFilter, offset, limit
 	result := make([]models.LotMetadata, len(components))
 	for i, comp := range components {
 		result[i] = models.LotMetadata{
-			LotName:      comp.LotName,
-			Model:        comp.Model,
-			CurrentPrice: comp.CurrentPrice,
+			LotName: comp.LotName,
+			Model:   comp.Model,
 			Lot: &models.Lot{
 				LotName:        comp.LotName,
 				LotDescription: comp.LotDescription,
@@ -138,9 +131,8 @@ func (r *UnifiedRepo) GetComponent(lotName string) (*models.LotMetadata, error)
 	}
 
 	return &models.LotMetadata{
-		LotName:      comp.LotName,
-		Model:        comp.Model,
-		CurrentPrice: comp.CurrentPrice,
+		LotName: comp.LotName,
+		Model:   comp.Model,
 		Lot: &models.Lot{
 			LotName:        comp.LotName,
 			LotDescription: comp.LotDescription,

internal/services/component.go

@@ -53,7 +53,6 @@ type ComponentView struct {
 	Category        string                `json:"category"`
 	CategoryName    string                `json:"category_name"`
 	Model           string                `json:"model"`
-	CurrentPrice    *float64              `json:"current_price"`
 	PriceFreshness  models.PriceFreshness `json:"price_freshness"`
 	PopularityScore float64               `json:"popularity_score"`
 	Specs           models.Specs          `json:"specs,omitempty"`
@@ -92,7 +91,6 @@ func (s *ComponentService) List(filter repository.ComponentFilter, page, perPage
 		view := ComponentView{
 			LotName:         c.LotName,
 			Model:           c.Model,
-			CurrentPrice:    c.CurrentPrice,
 			PriceFreshness:  c.GetPriceFreshness(30, 60, 90, 3),
 			PopularityScore: c.PopularityScore,
 			Specs:           c.Specs,
@@ -134,7 +132,6 @@ func (s *ComponentService) GetByLotName(lotName string) (*ComponentView, error)
 	view := &ComponentView{
 		LotName:         c.LotName,
 		Model:           c.Model,
-		CurrentPrice:    c.CurrentPrice,
 		PriceFreshness:  c.GetPriceFreshness(30, 60, 90, 3),
 		PopularityScore: c.PopularityScore,
 		Specs:           c.Specs,

internal/services/configuration.go

@@ -52,10 +52,20 @@ type CreateConfigRequest struct {
 	Notes       string             `json:"notes"`
 	IsTemplate  bool               `json:"is_template"`
 	ServerCount int                `json:"server_count"`
+	ServerModel string             `json:"server_model,omitempty"`
+	SupportCode string             `json:"support_code,omitempty"`
+	Article     string             `json:"article,omitempty"`
 	PricelistID *uint              `json:"pricelist_id,omitempty"`
 	OnlyInStock bool               `json:"only_in_stock"`
 }
 
+type ArticlePreviewRequest struct {
+	Items       models.ConfigItems `json:"items"`
+	ServerModel string             `json:"server_model"`
+	SupportCode string             `json:"support_code,omitempty"`
+	PricelistID *uint              `json:"pricelist_id,omitempty"`
+}
+
 func (s *ConfigurationService) Create(ownerUsername string, req *CreateConfigRequest) (*models.Configuration, error) {
 	projectUUID, err := s.resolveProjectUUID(ownerUsername, req.ProjectUUID)
 	if err != nil {
@@ -84,6 +94,9 @@ func (s *ConfigurationService) Create(ownerUsername string, req *CreateConfigReq
 		Notes:         req.Notes,
 		IsTemplate:    req.IsTemplate,
 		ServerCount:   req.ServerCount,
+		ServerModel:   req.ServerModel,
+		SupportCode:   req.SupportCode,
+		Article:       req.Article,
 		PricelistID:   pricelistID,
 		OnlyInStock:   req.OnlyInStock,
 	}
@@ -146,6 +159,9 @@ func (s *ConfigurationService) Update(uuid string, ownerUsername string, req *Cr
 	config.Notes = req.Notes
 	config.IsTemplate = req.IsTemplate
 	config.ServerCount = req.ServerCount
+	config.ServerModel = req.ServerModel
+	config.SupportCode = req.SupportCode
+	config.Article = req.Article
 	config.PricelistID = pricelistID
 	config.OnlyInStock = req.OnlyInStock
 

internal/services/export.go

@@ -4,33 +4,32 @@ import (
 	"bytes"
 	"encoding/csv"
 	"fmt"
+	"io"
+	"math"
+	"strings"
 	"time"
 
 	"git.mchus.pro/mchus/quoteforge/internal/config"
+	"git.mchus.pro/mchus/quoteforge/internal/localdb"
 	"git.mchus.pro/mchus/quoteforge/internal/models"
 	"git.mchus.pro/mchus/quoteforge/internal/repository"
 )
 
 type ExportService struct {
-	config     config.ExportConfig
+	config       config.ExportConfig
 	categoryRepo *repository.CategoryRepository
+	localDB      *localdb.LocalDB
 }
 
-func NewExportService(cfg config.ExportConfig, categoryRepo *repository.CategoryRepository) *ExportService {
+func NewExportService(cfg config.ExportConfig, categoryRepo *repository.CategoryRepository, local *localdb.LocalDB) *ExportService {
 	return &ExportService{
 		config:       cfg,
 		categoryRepo: categoryRepo,
+		localDB:      local,
 	}
 }
 
-type ExportData struct {
-	Name      string
-	Items     []ExportItem
-	Total     float64
-	Notes     string
-	CreatedAt time.Time
-}
-
+// ExportItem represents a single component in an export block.
 type ExportItem struct {
 	LotName     string
 	Description string
@@ -40,14 +39,45 @@ type ExportItem struct {
 	TotalPrice  float64
 }
 
-func (s *ExportService) ToCSV(data *ExportData) ([]byte, error) {
-	var buf bytes.Buffer
-	w := csv.NewWriter(&buf)
+// ConfigExportBlock represents one configuration (server) in the export.
+type ConfigExportBlock struct {
+	Article     string
+	ServerCount int
+	UnitPrice   float64 // sum of component prices for one server
+	Items       []ExportItem
+}
+
+// ProjectExportData holds all configuration blocks for a project-level export.
+type ProjectExportData struct {
+	Configs   []ConfigExportBlock
+	CreatedAt time.Time
+}
+
+// ToCSV writes project export data in the new structured CSV format.
+//
+// Format:
+//
+//	Line;Type;p/n;Description;Qty (1 pcs.);Qty (total);Price (1 pcs.);Price (total)
+//	10;;DL380-ARTICLE;;;10;10470;104 700
+//	;;MB_INTEL_...;;1;;2074,5;
+//	...
+//	(empty row)
+//	20;;DL380-ARTICLE-2;;;2;10470;20 940
+//	...
+func (s *ExportService) ToCSV(w io.Writer, data *ProjectExportData) error {
+	// Write UTF-8 BOM for Excel compatibility
+	if _, err := w.Write([]byte{0xEF, 0xBB, 0xBF}); err != nil {
+		return fmt.Errorf("failed to write BOM: %w", err)
+	}
+
+	csvWriter := csv.NewWriter(w)
+	csvWriter.Comma = ';'
+	defer csvWriter.Flush()
 
 	// Header
-	headers := []string{"Артикул", "Описание", "Категория", "Количество", "Цена за единицу", "Сумма"}
-	if err := w.Write(headers); err != nil {
-		return nil, err
+	headers := []string{"Line", "Type", "p/n", "Description", "Qty (1 pcs.)", "Qty (total)", "Price (1 pcs.)", "Price (total)"}
+	if err := csvWriter.Write(headers); err != nil {
+		return fmt.Errorf("failed to write header: %w", err)
 	}
 
 	// Get category hierarchy for sorting
@@ -61,87 +91,235 @@ func (s *ExportService) ToCSV(data *ExportData) ([]byte, error) {
 		}
 	}
 
-	// Sort items by category display order
-	sortedItems := make([]ExportItem, len(data.Items))
-	copy(sortedItems, data.Items)
+	for i, block := range data.Configs {
+		lineNo := (i + 1) * 10
 
-	// Sort using category display order (items without category go to the end)
-	for i := 0; i < len(sortedItems)-1; i++ {
-		for j := i + 1; j < len(sortedItems); j++ {
-			orderI, hasI := categoryOrder[sortedItems[i].Category]
-			orderJ, hasJ := categoryOrder[sortedItems[j].Category]
+		serverCount := block.ServerCount
+		if serverCount < 1 {
+			serverCount = 1
+		}
 
-			// Items without category go to the end
-			if !hasI && hasJ {
-				sortedItems[i], sortedItems[j] = sortedItems[j], sortedItems[i]
-			} else if hasI && hasJ {
-				// Both have categories, sort by display order
-				if orderI > orderJ {
-					sortedItems[i], sortedItems[j] = sortedItems[j], sortedItems[i]
+		totalPrice := block.UnitPrice * float64(serverCount)
+
+		// Server summary row
+		serverRow := []string{
+			fmt.Sprintf("%d", lineNo),        // Line
+			"",                                // Type
+			block.Article,                     // p/n
+			"",                                // Description
+			"",                                // Qty (1 pcs.)
+			fmt.Sprintf("%d", serverCount),    // Qty (total)
+			formatPriceInt(block.UnitPrice),   // Price (1 pcs.)
+			formatPriceWithSpace(totalPrice),  // Price (total)
+		}
+		if err := csvWriter.Write(serverRow); err != nil {
+			return fmt.Errorf("failed to write server row: %w", err)
+		}
+
+		// Sort items by category display order
+		sortedItems := make([]ExportItem, len(block.Items))
+		copy(sortedItems, block.Items)
+		sortItemsByCategory(sortedItems, categoryOrder)
+
+		// Component rows
+		for _, item := range sortedItems {
+			componentRow := []string{
+				"",                                // Line
+				item.Category,                     // Type
+				item.LotName,                      // p/n
+				"",                                // Description
+				fmt.Sprintf("%d", item.Quantity),  // Qty (1 pcs.)
+				"",                                // Qty (total)
+				formatPriceComma(item.UnitPrice),  // Price (1 pcs.)
+				"",                                // Price (total)
+			}
+			if err := csvWriter.Write(componentRow); err != nil {
+				return fmt.Errorf("failed to write component row: %w", err)
+			}
+		}
+
+		// Empty separator row between blocks (skip after last)
+		if i < len(data.Configs)-1 {
+			if err := csvWriter.Write([]string{"", "", "", "", "", "", "", ""}); err != nil {
+				return fmt.Errorf("failed to write separator row: %w", err)
+			}
+		}
+	}
+
+	csvWriter.Flush()
+	if err := csvWriter.Error(); err != nil {
+		return fmt.Errorf("csv writer error: %w", err)
+	}
+
+	return nil
+}
+
+// ToCSVBytes is a backward-compatible wrapper that returns CSV data as bytes.
+func (s *ExportService) ToCSVBytes(data *ProjectExportData) ([]byte, error) {
+	var buf bytes.Buffer
+	if err := s.ToCSV(&buf, data); err != nil {
+		return nil, err
+	}
+	return buf.Bytes(), nil
+}
+
+// ConfigToExportData converts a single configuration into ProjectExportData.
+func (s *ExportService) ConfigToExportData(cfg *models.Configuration) *ProjectExportData {
+	block := s.buildExportBlock(cfg)
+	return &ProjectExportData{
+		Configs:   []ConfigExportBlock{block},
+		CreatedAt: cfg.CreatedAt,
+	}
+}
+
+// ProjectToExportData converts multiple configurations into ProjectExportData.
+func (s *ExportService) ProjectToExportData(configs []models.Configuration) *ProjectExportData {
+	blocks := make([]ConfigExportBlock, 0, len(configs))
+	for i := range configs {
+		blocks = append(blocks, s.buildExportBlock(&configs[i]))
+	}
+	return &ProjectExportData{
+		Configs:   blocks,
+		CreatedAt: time.Now(),
+	}
+}
+
+func (s *ExportService) buildExportBlock(cfg *models.Configuration) ConfigExportBlock {
+	// Batch-fetch categories from local data (pricelist items → local_components fallback)
+	lotNames := make([]string, len(cfg.Items))
+	for i, item := range cfg.Items {
+		lotNames[i] = item.LotName
+	}
+	categories := s.resolveCategories(cfg.PricelistID, lotNames)
+
+	items := make([]ExportItem, len(cfg.Items))
+	var unitTotal float64
+
+	for i, item := range cfg.Items {
+		itemTotal := item.UnitPrice * float64(item.Quantity)
+		items[i] = ExportItem{
+			LotName:    item.LotName,
+			Category:   categories[item.LotName],
+			Quantity:   item.Quantity,
+			UnitPrice:  item.UnitPrice,
+			TotalPrice: itemTotal,
+		}
+		unitTotal += itemTotal
+	}
+
+	serverCount := cfg.ServerCount
+	if serverCount < 1 {
+		serverCount = 1
+	}
+
+	return ConfigExportBlock{
+		Article:     cfg.Article,
+		ServerCount: serverCount,
+		UnitPrice:   unitTotal,
+		Items:       items,
+	}
+}
+
+// resolveCategories returns lot_name → category map.
+// Primary source: pricelist items (lot_category). Fallback: local_components table.
+func (s *ExportService) resolveCategories(pricelistID *uint, lotNames []string) map[string]string {
+	if len(lotNames) == 0 || s.localDB == nil {
+		return map[string]string{}
+	}
+
+	categories := make(map[string]string, len(lotNames))
+
+	// Primary: pricelist items
+	if pricelistID != nil && *pricelistID > 0 {
+		if cats, err := s.localDB.GetLocalLotCategoriesByServerPricelistID(*pricelistID, lotNames); err == nil {
+			for lot, cat := range cats {
+				if strings.TrimSpace(cat) != "" {
+					categories[lot] = cat
 				}
 			}
 		}
 	}
 
-	// Items
-	for _, item := range sortedItems {
-		row := []string{
-			item.LotName,
-			item.Description,
-			item.Category,
-			fmt.Sprintf("%d", item.Quantity),
-			fmt.Sprintf("%.2f", item.UnitPrice),
-			fmt.Sprintf("%.2f", item.TotalPrice),
-		}
-		if err := w.Write(row); err != nil {
-			return nil, err
+	// Fallback: local_components for any still missing
+	var missing []string
+	for _, lot := range lotNames {
+		if categories[lot] == "" {
+			missing = append(missing, lot)
 		}
 	}
-
-	// Total row
-	if err := w.Write([]string{"", "", "", "", "ИТОГО:", fmt.Sprintf("%.2f", data.Total)}); err != nil {
-		return nil, err
-	}
-
-	w.Flush()
-	return buf.Bytes(), w.Error()
-}
-
-func (s *ExportService) ConfigToExportData(config *models.Configuration, componentService *ComponentService) *ExportData {
-	items := make([]ExportItem, len(config.Items))
-	var total float64
-
-	for i, item := range config.Items {
-		itemTotal := item.UnitPrice * float64(item.Quantity)
-
-		// Получаем информацию о компоненте для заполнения категории
-		componentView, err := componentService.GetByLotName(item.LotName)
-		if err != nil {
-			// Если не удалось получить информацию о компоненте, используем только основные данные
-			items[i] = ExportItem{
-				LotName:    item.LotName,
-				Quantity:   item.Quantity,
-				UnitPrice:  item.UnitPrice,
-				TotalPrice: itemTotal,
-			}
-		} else {
-			items[i] = ExportItem{
-				LotName:     item.LotName,
-				Description: componentView.Description,
-				Category:    componentView.Category,
-				Quantity:    item.Quantity,
-				UnitPrice:   item.UnitPrice,
-				TotalPrice:  itemTotal,
+	if len(missing) > 0 {
+		if fallback, err := s.localDB.GetLocalComponentCategoriesByLotNames(missing); err == nil {
+			for lot, cat := range fallback {
+				if strings.TrimSpace(cat) != "" {
+					categories[lot] = cat
+				}
 			}
 		}
-		total += itemTotal
 	}
 
-	return &ExportData{
-		Name:      config.Name,
-		Items:     items,
-		Total:     total,
-		Notes:     config.Notes,
-		CreatedAt: config.CreatedAt,
+	return categories
+}
+
+// sortItemsByCategory sorts items by category display order (items without category go to the end).
+func sortItemsByCategory(items []ExportItem, categoryOrder map[string]int) {
+	for i := 0; i < len(items)-1; i++ {
+		for j := i + 1; j < len(items); j++ {
+			orderI, hasI := categoryOrder[items[i].Category]
+			orderJ, hasJ := categoryOrder[items[j].Category]
+
+			if !hasI && hasJ {
+				items[i], items[j] = items[j], items[i]
+			} else if hasI && hasJ && orderI > orderJ {
+				items[i], items[j] = items[j], items[i]
+			}
+		}
 	}
 }
+
+// formatPriceComma formats a price with comma as decimal separator (e.g., "2074,5").
+// Trailing zeros after the comma are trimmed, and if the value is an integer, no comma is shown.
+func formatPriceComma(value float64) string {
+	if value == math.Trunc(value) {
+		return fmt.Sprintf("%.0f", value)
+	}
+	s := fmt.Sprintf("%.2f", value)
+	s = strings.ReplaceAll(s, ".", ",")
+	// Trim trailing zero: "2074,50" -> "2074,5"
+	s = strings.TrimRight(s, "0")
+	s = strings.TrimRight(s, ",")
+	return s
+}
+
+// formatPriceInt formats price as integer (rounded), no decimal.
+func formatPriceInt(value float64) string {
+	return fmt.Sprintf("%.0f", math.Round(value))
+}
+
+// formatPriceWithSpace formats a price as an integer with space as thousands separator (e.g., "104 700").
+func formatPriceWithSpace(value float64) string {
+	intVal := int64(math.Round(value))
+	if intVal < 0 {
+		return "-" + formatIntWithSpace(-intVal)
+	}
+	return formatIntWithSpace(intVal)
+}
+
+func formatIntWithSpace(n int64) string {
+	s := fmt.Sprintf("%d", n)
+	if len(s) <= 3 {
+		return s
+	}
+
+	var result strings.Builder
+	remainder := len(s) % 3
+	if remainder > 0 {
+		result.WriteString(s[:remainder])
+	}
+	for i := remainder; i < len(s); i += 3 {
+		if result.Len() > 0 {
+			result.WriteByte(' ')
+		}
+		result.WriteString(s[i : i+3])
+	}
+	return result.String()
+}

internal/services/export_test.go

@@ -0,0 +1,406 @@
+package services
+
+import (
+	"bytes"
+	"encoding/csv"
+	"io"
+	"testing"
+	"time"
+
+	"git.mchus.pro/mchus/quoteforge/internal/config"
+)
+
+func newTestProjectData(items []ExportItem, article string, serverCount int) *ProjectExportData {
+	var unitTotal float64
+	for _, item := range items {
+		unitTotal += item.UnitPrice * float64(item.Quantity)
+	}
+	if serverCount < 1 {
+		serverCount = 1
+	}
+	return &ProjectExportData{
+		Configs: []ConfigExportBlock{
+			{
+				Article:     article,
+				ServerCount: serverCount,
+				UnitPrice:   unitTotal,
+				Items:       items,
+			},
+		},
+		CreatedAt: time.Now(),
+	}
+}
+
+func TestToCSV_UTF8BOM(t *testing.T) {
+	svc := NewExportService(config.ExportConfig{}, nil, nil)
+
+	data := newTestProjectData([]ExportItem{
+		{
+			LotName:    "LOT-001",
+			Category:   "CAT",
+			Quantity:   1,
+			UnitPrice:  100.0,
+			TotalPrice: 100.0,
+		},
+	}, "TEST-ARTICLE", 1)
+
+	var buf bytes.Buffer
+	if err := svc.ToCSV(&buf, data); err != nil {
+		t.Fatalf("ToCSV failed: %v", err)
+	}
+
+	csvBytes := buf.Bytes()
+	if len(csvBytes) < 3 {
+		t.Fatalf("CSV too short to contain BOM")
+	}
+
+	expectedBOM := []byte{0xEF, 0xBB, 0xBF}
+	actualBOM := csvBytes[:3]
+	if !bytes.Equal(actualBOM, expectedBOM) {
+		t.Errorf("UTF-8 BOM mismatch. Expected %v, got %v", expectedBOM, actualBOM)
+	}
+}
+
+func TestToCSV_SemicolonDelimiter(t *testing.T) {
+	svc := NewExportService(config.ExportConfig{}, nil, nil)
+
+	data := newTestProjectData([]ExportItem{
+		{
+			LotName:    "LOT-001",
+			Category:   "CAT",
+			Quantity:   2,
+			UnitPrice:  100.50,
+			TotalPrice: 201.00,
+		},
+	}, "TEST-ARTICLE", 1)
+
+	var buf bytes.Buffer
+	if err := svc.ToCSV(&buf, data); err != nil {
+		t.Fatalf("ToCSV failed: %v", err)
+	}
+
+	csvBytes := buf.Bytes()
+	reader := csv.NewReader(bytes.NewReader(csvBytes[3:]))
+	reader.Comma = ';'
+
+	// Read header
+	header, err := reader.Read()
+	if err != nil {
+		t.Fatalf("Failed to read header: %v", err)
+	}
+
+	if len(header) != 8 {
+		t.Errorf("Expected 8 columns, got %d", len(header))
+	}
+
+	expectedHeader := []string{"Line", "Type", "p/n", "Description", "Qty (1 pcs.)", "Qty (total)", "Price (1 pcs.)", "Price (total)"}
+	for i, col := range expectedHeader {
+		if i < len(header) && header[i] != col {
+			t.Errorf("Column %d: expected %q, got %q", i, col, header[i])
+		}
+	}
+
+	// Read server row
+	serverRow, err := reader.Read()
+	if err != nil {
+		t.Fatalf("Failed to read server row: %v", err)
+	}
+	if serverRow[0] != "10" {
+		t.Errorf("Expected line number 10, got %s", serverRow[0])
+	}
+	if serverRow[2] != "TEST-ARTICLE" {
+		t.Errorf("Expected article TEST-ARTICLE, got %s", serverRow[2])
+	}
+
+	// Read component row
+	itemRow, err := reader.Read()
+	if err != nil {
+		t.Fatalf("Failed to read item row: %v", err)
+	}
+	if itemRow[2] != "LOT-001" {
+		t.Errorf("Lot name mismatch: expected LOT-001, got %s", itemRow[2])
+	}
+	if itemRow[4] != "2" {
+		t.Errorf("Quantity mismatch: expected 2, got %s", itemRow[4])
+	}
+	if itemRow[6] != "100,5" {
+		t.Errorf("Unit price mismatch: expected 100,5, got %s", itemRow[6])
+	}
+}
+
+func TestToCSV_ServerRow(t *testing.T) {
+	svc := NewExportService(config.ExportConfig{}, nil, nil)
+
+	data := newTestProjectData([]ExportItem{
+		{LotName: "LOT-001", Category: "CAT", Quantity: 1, UnitPrice: 100.0, TotalPrice: 100.0},
+		{LotName: "LOT-002", Category: "CAT", Quantity: 2, UnitPrice: 50.0, TotalPrice: 100.0},
+	}, "DL380-ART", 10)
+
+	var buf bytes.Buffer
+	if err := svc.ToCSV(&buf, data); err != nil {
+		t.Fatalf("ToCSV failed: %v", err)
+	}
+
+	csvBytes := buf.Bytes()
+	reader := csv.NewReader(bytes.NewReader(csvBytes[3:]))
+	reader.Comma = ';'
+
+	// Skip header
+	reader.Read()
+
+	// Read server row
+	serverRow, err := reader.Read()
+	if err != nil {
+		t.Fatalf("Failed to read server row: %v", err)
+	}
+
+	if serverRow[0] != "10" {
+		t.Errorf("Expected line 10, got %s", serverRow[0])
+	}
+	if serverRow[2] != "DL380-ART" {
+		t.Errorf("Expected article DL380-ART, got %s", serverRow[2])
+	}
+	if serverRow[5] != "10" {
+		t.Errorf("Expected server count 10, got %s", serverRow[5])
+	}
+	// UnitPrice = 100 + 100 = 200
+	if serverRow[6] != "200" {
+		t.Errorf("Expected unit price 200, got %s", serverRow[6])
+	}
+	// TotalPrice = 200 * 10 = 2000
+	if serverRow[7] != "2 000" {
+		t.Errorf("Expected total price '2 000', got %q", serverRow[7])
+	}
+}
+
+func TestToCSV_CategorySorting(t *testing.T) {
+	svc := NewExportService(config.ExportConfig{}, nil, nil)
+
+	data := newTestProjectData([]ExportItem{
+		{LotName: "LOT-001", Category: "CAT-A", Quantity: 1, UnitPrice: 100.0, TotalPrice: 100.0},
+		{LotName: "LOT-002", Category: "CAT-C", Quantity: 1, UnitPrice: 100.0, TotalPrice: 100.0},
+		{LotName: "LOT-003", Category: "CAT-B", Quantity: 1, UnitPrice: 100.0, TotalPrice: 100.0},
+	}, "ART", 1)
+
+	var buf bytes.Buffer
+	if err := svc.ToCSV(&buf, data); err != nil {
+		t.Fatalf("ToCSV failed: %v", err)
+	}
+
+	csvBytes := buf.Bytes()
+	reader := csv.NewReader(bytes.NewReader(csvBytes[3:]))
+	reader.Comma = ';'
+
+	// Skip header and server row
+	reader.Read()
+	reader.Read()
+
+	// Without category repo, items maintain original order
+	row1, _ := reader.Read()
+	if row1[2] != "LOT-001" {
+		t.Errorf("Expected LOT-001 first, got %s", row1[2])
+	}
+
+	row2, _ := reader.Read()
+	if row2[2] != "LOT-002" {
+		t.Errorf("Expected LOT-002 second, got %s", row2[2])
+	}
+
+	row3, _ := reader.Read()
+	if row3[2] != "LOT-003" {
+		t.Errorf("Expected LOT-003 third, got %s", row3[2])
+	}
+}
+
+func TestToCSV_EmptyData(t *testing.T) {
+	svc := NewExportService(config.ExportConfig{}, nil, nil)
+
+	data := &ProjectExportData{
+		Configs:   []ConfigExportBlock{},
+		CreatedAt: time.Now(),
+	}
+
+	var buf bytes.Buffer
+	if err := svc.ToCSV(&buf, data); err != nil {
+		t.Fatalf("ToCSV failed: %v", err)
+	}
+
+	csvBytes := buf.Bytes()
+	reader := csv.NewReader(bytes.NewReader(csvBytes[3:]))
+	reader.Comma = ';'
+
+	header, err := reader.Read()
+	if err != nil {
+		t.Fatalf("Failed to read header: %v", err)
+	}
+
+	if len(header) != 8 {
+		t.Errorf("Expected 8 columns, got %d", len(header))
+	}
+
+	// No more rows expected
+	_, err = reader.Read()
+	if err != io.EOF {
+		t.Errorf("Expected EOF after header, got: %v", err)
+	}
+}
+
+func TestToCSVBytes_BackwardCompat(t *testing.T) {
+	svc := NewExportService(config.ExportConfig{}, nil, nil)
+
+	data := newTestProjectData([]ExportItem{
+		{LotName: "LOT-001", Category: "CAT", Quantity: 1, UnitPrice: 100.0, TotalPrice: 100.0},
+	}, "ART", 1)
+
+	csvBytes, err := svc.ToCSVBytes(data)
+	if err != nil {
+		t.Fatalf("ToCSVBytes failed: %v", err)
+	}
+
+	if len(csvBytes) < 3 {
+		t.Fatalf("CSV bytes too short")
+	}
+
+	expectedBOM := []byte{0xEF, 0xBB, 0xBF}
+	actualBOM := csvBytes[:3]
+	if !bytes.Equal(actualBOM, expectedBOM) {
+		t.Errorf("UTF-8 BOM mismatch in ToCSVBytes")
+	}
+}
+
+func TestToCSV_WriterError(t *testing.T) {
+	svc := NewExportService(config.ExportConfig{}, nil, nil)
+
+	data := newTestProjectData([]ExportItem{
+		{LotName: "LOT-001", Category: "CAT", Quantity: 1, UnitPrice: 100.0, TotalPrice: 100.0},
+	}, "ART", 1)
+
+	failingWriter := &failingWriter{}
+
+	if err := svc.ToCSV(failingWriter, data); err == nil {
+		t.Errorf("Expected error from failing writer, got nil")
+	}
+}
+
+func TestToCSV_MultipleBlocks(t *testing.T) {
+	svc := NewExportService(config.ExportConfig{}, nil, nil)
+
+	data := &ProjectExportData{
+		Configs: []ConfigExportBlock{
+			{
+				Article:     "ART-1",
+				ServerCount: 2,
+				UnitPrice:   500.0,
+				Items: []ExportItem{
+					{LotName: "LOT-A", Category: "CPU", Quantity: 1, UnitPrice: 500.0, TotalPrice: 500.0},
+				},
+			},
+			{
+				Article:     "ART-2",
+				ServerCount: 3,
+				UnitPrice:   1000.0,
+				Items: []ExportItem{
+					{LotName: "LOT-B", Category: "MEM", Quantity: 2, UnitPrice: 500.0, TotalPrice: 1000.0},
+				},
+			},
+		},
+		CreatedAt: time.Now(),
+	}
+
+	var buf bytes.Buffer
+	if err := svc.ToCSV(&buf, data); err != nil {
+		t.Fatalf("ToCSV failed: %v", err)
+	}
+
+	csvBytes := buf.Bytes()
+	reader := csv.NewReader(bytes.NewReader(csvBytes[3:]))
+	reader.Comma = ';'
+	reader.FieldsPerRecord = -1 // allow variable fields
+
+	// Header
+	reader.Read()
+
+	// Block 1: server row
+	srv1, _ := reader.Read()
+	if srv1[0] != "10" {
+		t.Errorf("Block 1 line: expected 10, got %s", srv1[0])
+	}
+	if srv1[7] != "1 000" {
+		t.Errorf("Block 1 total: expected '1 000', got %q", srv1[7])
+	}
+
+	// Block 1: component row
+	comp1, _ := reader.Read()
+	if comp1[2] != "LOT-A" {
+		t.Errorf("Block 1 component: expected LOT-A, got %s", comp1[2])
+	}
+
+	// Separator row
+	sep, _ := reader.Read()
+	allEmpty := true
+	for _, v := range sep {
+		if v != "" {
+			allEmpty = false
+		}
+	}
+	if !allEmpty {
+		t.Errorf("Expected empty separator row, got %v", sep)
+	}
+
+	// Block 2: server row
+	srv2, _ := reader.Read()
+	if srv2[0] != "20" {
+		t.Errorf("Block 2 line: expected 20, got %s", srv2[0])
+	}
+	if srv2[7] != "3 000" {
+		t.Errorf("Block 2 total: expected '3 000', got %q", srv2[7])
+	}
+}
+
+func TestFormatPriceWithSpace(t *testing.T) {
+	tests := []struct {
+		input    float64
+		expected string
+	}{
+		{0, "0"},
+		{100, "100"},
+		{1000, "1 000"},
+		{10470, "10 470"},
+		{104700, "104 700"},
+		{1000000, "1 000 000"},
+	}
+
+	for _, tt := range tests {
+		result := formatPriceWithSpace(tt.input)
+		if result != tt.expected {
+			t.Errorf("formatPriceWithSpace(%v): expected %q, got %q", tt.input, tt.expected, result)
+		}
+	}
+}
+
+func TestFormatPriceComma(t *testing.T) {
+	tests := []struct {
+		input    float64
+		expected string
+	}{
+		{100.0, "100"},
+		{2074.5, "2074,5"},
+		{100.50, "100,5"},
+		{99.99, "99,99"},
+		{0, "0"},
+	}
+
+	for _, tt := range tests {
+		result := formatPriceComma(tt.input)
+		if result != tt.expected {
+			t.Errorf("formatPriceComma(%v): expected %q, got %q", tt.input, tt.expected, result)
+		}
+	}
+}
+
+// failingWriter always returns an error
+type failingWriter struct{}
+
+func (fw *failingWriter) Write(p []byte) (int, error) {
+	return 0, io.EOF
+}

internal/services/local_configuration.go

@@ -8,6 +8,7 @@ import (
 	"time"
 
 	"git.mchus.pro/mchus/quoteforge/internal/appmeta"
+	"git.mchus.pro/mchus/quoteforge/internal/article"
 	"git.mchus.pro/mchus/quoteforge/internal/localdb"
 	"git.mchus.pro/mchus/quoteforge/internal/models"
 	"git.mchus.pro/mchus/quoteforge/internal/services/sync"
@@ -64,6 +65,18 @@ func (s *LocalConfigurationService) Create(ownerUsername string, req *CreateConf
 		return nil, err
 	}
 
+	if strings.TrimSpace(req.ServerModel) != "" {
+		articleResult, articleErr := article.Build(s.localDB, req.Items, article.BuildOptions{
+			ServerModel:     req.ServerModel,
+			SupportCode:     req.SupportCode,
+			ServerPricelist: pricelistID,
+		})
+		if articleErr != nil {
+			return nil, articleErr
+		}
+		req.Article = articleResult.Article
+	}
+
 	total := req.Items.Total()
 	if req.ServerCount > 1 {
 		total *= float64(req.ServerCount)
@@ -80,6 +93,9 @@ func (s *LocalConfigurationService) Create(ownerUsername string, req *CreateConf
 		Notes:         req.Notes,
 		IsTemplate:    req.IsTemplate,
 		ServerCount:   req.ServerCount,
+		ServerModel:   req.ServerModel,
+		SupportCode:   req.SupportCode,
+		Article:       req.Article,
 		PricelistID:   pricelistID,
 		OnlyInStock:   req.OnlyInStock,
 		CreatedAt:     time.Now(),
@@ -142,6 +158,18 @@ func (s *LocalConfigurationService) Update(uuid string, ownerUsername string, re
 		return nil, err
 	}
 
+	if strings.TrimSpace(req.ServerModel) != "" {
+		articleResult, articleErr := article.Build(s.localDB, req.Items, article.BuildOptions{
+			ServerModel:     req.ServerModel,
+			SupportCode:     req.SupportCode,
+			ServerPricelist: pricelistID,
+		})
+		if articleErr != nil {
+			return nil, articleErr
+		}
+		req.Article = articleResult.Article
+	}
+
 	total := req.Items.Total()
 	if req.ServerCount > 1 {
 		total *= float64(req.ServerCount)
@@ -163,6 +191,9 @@ func (s *LocalConfigurationService) Update(uuid string, ownerUsername string, re
 	localCfg.Notes = req.Notes
 	localCfg.IsTemplate = req.IsTemplate
 	localCfg.ServerCount = req.ServerCount
+	localCfg.ServerModel = req.ServerModel
+	localCfg.SupportCode = req.SupportCode
+	localCfg.Article = req.Article
 	localCfg.PricelistID = pricelistID
 	localCfg.OnlyInStock = req.OnlyInStock
 	localCfg.UpdatedAt = time.Now()
@@ -176,6 +207,19 @@ func (s *LocalConfigurationService) Update(uuid string, ownerUsername string, re
 	return cfg, nil
 }
 
+// BuildArticlePreview generates server article based on current items and server_model/support_code.
+func (s *LocalConfigurationService) BuildArticlePreview(req *ArticlePreviewRequest) (article.BuildResult, error) {
+	pricelistID, err := s.resolvePricelistID(req.PricelistID)
+	if err != nil {
+		return article.BuildResult{}, err
+	}
+	return article.Build(s.localDB, req.Items, article.BuildOptions{
+		ServerModel:     req.ServerModel,
+		SupportCode:     req.SupportCode,
+		ServerPricelist: pricelistID,
+	})
+}
+
 // Delete deletes a configuration from local SQLite and queues it for sync
 func (s *LocalConfigurationService) Delete(uuid string, ownerUsername string) error {
 	localCfg, err := s.localDB.GetConfigurationByUUID(uuid)
@@ -269,6 +313,9 @@ func (s *LocalConfigurationService) CloneToProject(configUUID string, ownerUsern
 		Notes:         original.Notes,
 		IsTemplate:    false,
 		ServerCount:   original.ServerCount,
+		ServerModel:   original.ServerModel,
+		SupportCode:   original.SupportCode,
+		Article:       original.Article,
 		PricelistID:   original.PricelistID,
 		OnlyInStock:   original.OnlyInStock,
 		CreatedAt:     time.Now(),
@@ -347,7 +394,7 @@ func (s *LocalConfigurationService) RefreshPrices(uuid string, ownerUsername str
 	}
 	latestPricelist, latestErr := s.localDB.GetLatestLocalPricelist()
 
-	// Update prices for all items
+	// Update prices for all items from pricelist
 	updatedItems := make(localdb.LocalConfigItems, len(localCfg.Items))
 	for i, item := range localCfg.Items {
 		if latestErr == nil && latestPricelist != nil {
@@ -362,20 +409,8 @@ func (s *LocalConfigurationService) RefreshPrices(uuid string, ownerUsername str
 			}
 		}
 
-		// Fallback to current component price from local cache
-		component, err := s.localDB.GetLocalComponent(item.LotName)
-		if err != nil || component.CurrentPrice == nil {
-			// Keep original item if component not found or no price available
-			updatedItems[i] = item
-			continue
-		}
-
-		// Update item with current price from local cache
-		updatedItems[i] = localdb.LocalConfigItem{
-			LotName:   item.LotName,
-			Quantity:  item.Quantity,
-			UnitPrice: *component.CurrentPrice,
-		}
+		// Keep original item if price not found in pricelist
+		updatedItems[i] = item
 	}
 
 	// Update configuration
@@ -407,14 +442,14 @@ func (s *LocalConfigurationService) RefreshPrices(uuid string, ownerUsername str
 
 // GetByUUIDNoAuth returns configuration without ownership check
 func (s *LocalConfigurationService) GetByUUIDNoAuth(uuid string) (*models.Configuration, error) {
-	localCfg, err := s.localDB.GetConfigurationByUUID(uuid)
-	if err != nil {
+	var localCfg localdb.LocalConfiguration
+	if err := s.localDB.DB().Preload("CurrentVersion").Where("uuid = ?", uuid).First(&localCfg).Error; err != nil {
 		return nil, ErrConfigNotFound
 	}
 	if !localCfg.IsActive {
 		return nil, ErrConfigNotFound
 	}
-	return localdb.LocalToConfiguration(localCfg), nil
+	return localdb.LocalToConfiguration(&localCfg), nil
 }
 
 // UpdateNoAuth updates configuration without ownership check
@@ -426,9 +461,21 @@ func (s *LocalConfigurationService) UpdateNoAuth(uuid string, req *CreateConfigR
 
 	projectUUID := localCfg.ProjectUUID
 	if req.ProjectUUID != nil {
+		requestedProjectUUID := strings.TrimSpace(*req.ProjectUUID)
+		currentProjectUUID := ""
+		if localCfg.ProjectUUID != nil {
+			currentProjectUUID = strings.TrimSpace(*localCfg.ProjectUUID)
+		}
+
 		projectUUID, err = s.resolveProjectUUID(localCfg.OriginalUsername, req.ProjectUUID)
 		if err != nil {
-			return nil, err
+			// Allow save for legacy/orphaned configs when request keeps the same project UUID.
+			// This can happen for imported configs whose project is not present in local cache.
+			if errors.Is(err, ErrProjectNotFound) && requestedProjectUUID != "" && requestedProjectUUID == currentProjectUUID {
+				projectUUID = localCfg.ProjectUUID
+			} else {
+				return nil, err
+			}
 		}
 	}
 	pricelistID, err := s.resolvePricelistID(req.PricelistID)
@@ -436,6 +483,18 @@ func (s *LocalConfigurationService) UpdateNoAuth(uuid string, req *CreateConfigR
 		return nil, err
 	}
 
+	if strings.TrimSpace(req.ServerModel) != "" {
+		articleResult, articleErr := article.Build(s.localDB, req.Items, article.BuildOptions{
+			ServerModel:     req.ServerModel,
+			SupportCode:     req.SupportCode,
+			ServerPricelist: pricelistID,
+		})
+		if articleErr != nil {
+			return nil, articleErr
+		}
+		req.Article = articleResult.Article
+	}
+
 	total := req.Items.Total()
 	if req.ServerCount > 1 {
 		total *= float64(req.ServerCount)
@@ -456,6 +515,9 @@ func (s *LocalConfigurationService) UpdateNoAuth(uuid string, req *CreateConfigR
 	localCfg.Notes = req.Notes
 	localCfg.IsTemplate = req.IsTemplate
 	localCfg.ServerCount = req.ServerCount
+	localCfg.ServerModel = req.ServerModel
+	localCfg.SupportCode = req.SupportCode
+	localCfg.Article = req.Article
 	localCfg.PricelistID = pricelistID
 	localCfg.OnlyInStock = req.OnlyInStock
 	localCfg.UpdatedAt = time.Now()
@@ -521,10 +583,30 @@ func (s *LocalConfigurationService) CloneNoAuth(configUUID string, newName strin
 }
 
 func (s *LocalConfigurationService) CloneNoAuthToProject(configUUID string, newName string, ownerUsername string, projectUUID *string) (*models.Configuration, error) {
+	return s.CloneNoAuthToProjectFromVersion(configUUID, newName, ownerUsername, projectUUID, 0)
+}
+
+func (s *LocalConfigurationService) CloneNoAuthToProjectFromVersion(configUUID string, newName string, ownerUsername string, projectUUID *string, fromVersion int) (*models.Configuration, error) {
 	original, err := s.GetByUUIDNoAuth(configUUID)
 	if err != nil {
 		return nil, err
 	}
+
+	// If fromVersion specified, use snapshot from that version
+	if fromVersion > 0 {
+		version, vErr := s.GetVersion(configUUID, fromVersion)
+		if vErr != nil {
+			return nil, vErr
+		}
+		snapshot, decErr := s.decodeConfigurationSnapshot(version.Data)
+		if decErr != nil {
+			return nil, fmt.Errorf("decode version snapshot for clone: %w", decErr)
+		}
+		snapshotCfg := localdb.LocalToConfiguration(snapshot)
+		original = snapshotCfg
+		original.UUID = configUUID // preserve original UUID for project resolution
+	}
+
 	resolvedProjectUUID := original.ProjectUUID
 	if projectUUID != nil {
 		resolvedProjectUUID, err = s.resolveProjectUUID(ownerUsername, projectUUID)
@@ -672,7 +754,7 @@ func (s *LocalConfigurationService) RefreshPricesNoAuth(uuid string) (*models.Co
 	}
 	latestPricelist, latestErr := s.localDB.GetLatestLocalPricelist()
 
-	// Update prices for all items
+	// Update prices for all items from pricelist
 	updatedItems := make(localdb.LocalConfigItems, len(localCfg.Items))
 	for i, item := range localCfg.Items {
 		if latestErr == nil && latestPricelist != nil {
@@ -687,20 +769,8 @@ func (s *LocalConfigurationService) RefreshPricesNoAuth(uuid string) (*models.Co
 			}
 		}
 
-		// Fallback to current component price from local cache
-		component, err := s.localDB.GetLocalComponent(item.LotName)
-		if err != nil || component.CurrentPrice == nil {
-			// Keep original item if component not found or no price available
-			updatedItems[i] = item
-			continue
-		}
-
-		// Update item with current price from local cache
-		updatedItems[i] = localdb.LocalConfigItem{
-			LotName:   item.LotName,
-			Quantity:  item.Quantity,
-			UnitPrice: *component.CurrentPrice,
-		}
+		// Keep original item if price not found in pricelist
+		updatedItems[i] = item
 	}
 
 	// Update configuration
@@ -730,6 +800,58 @@ func (s *LocalConfigurationService) RefreshPricesNoAuth(uuid string) (*models.Co
 	return cfg, nil
 }
 
+// UpdateServerCount updates server count and recalculates total price without creating a new version.
+func (s *LocalConfigurationService) UpdateServerCount(configUUID string, serverCount int) (*models.Configuration, error) {
+	if serverCount < 1 {
+		return nil, fmt.Errorf("server count must be at least 1")
+	}
+
+	localCfg, err := s.localDB.GetConfigurationByUUID(configUUID)
+	if err != nil {
+		return nil, ErrConfigNotFound
+	}
+
+	localCfg.ServerCount = serverCount
+	total := localCfg.Items.Total()
+	if serverCount > 1 {
+		total *= float64(serverCount)
+	}
+	localCfg.TotalPrice = &total
+	localCfg.UpdatedAt = time.Now()
+	localCfg.SyncStatus = "pending"
+
+	var cfg *models.Configuration
+	err = s.localDB.DB().Transaction(func(tx *gorm.DB) error {
+		if err := tx.Save(localCfg).Error; err != nil {
+			return fmt.Errorf("save local configuration: %w", err)
+		}
+
+		// Use existing current version for the pending change
+		var version localdb.LocalConfigurationVersion
+		if localCfg.CurrentVersionID != nil && *localCfg.CurrentVersionID != "" {
+			if err := tx.Where("id = ?", *localCfg.CurrentVersionID).First(&version).Error; err != nil {
+				return fmt.Errorf("load current version: %w", err)
+			}
+		} else {
+			if err := tx.Where("configuration_uuid = ?", localCfg.UUID).
+				Order("version_no DESC").First(&version).Error; err != nil {
+				return fmt.Errorf("load latest version: %w", err)
+			}
+		}
+
+		cfg = localdb.LocalToConfiguration(localCfg)
+		if err := s.enqueueConfigurationPendingChangeTx(tx, localCfg, "update", &version, ""); err != nil {
+			return fmt.Errorf("enqueue server-count pending change: %w", err)
+		}
+		return nil
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	return cfg, nil
+}
+
 // ImportFromServer imports configurations from MariaDB to local SQLite cache.
 func (s *LocalConfigurationService) ImportFromServer() (*sync.ConfigImportResult, error) {
 	return s.syncService.ImportConfigurationsToLocal()
@@ -858,6 +980,7 @@ func (s *LocalConfigurationService) createWithVersion(localCfg *localdb.LocalCon
 			return fmt.Errorf("set current version id: %w", err)
 		}
 		localCfg.CurrentVersionID = &version.ID
+		localCfg.CurrentVersion = version
 
 		if err := s.enqueueConfigurationPendingChangeTx(tx, localCfg, "create", version, createdBy); err != nil {
 			return fmt.Errorf("enqueue create pending change: %w", err)
@@ -884,6 +1007,26 @@ func (s *LocalConfigurationService) saveWithVersionAndPending(localCfg *localdb.
 			return fmt.Errorf("lock configuration row: %w", err)
 		}
 
+		if operation == "update" {
+			currentVersion, err := s.loadCurrentVersionTx(tx, &locked)
+			if err != nil {
+				return fmt.Errorf("load current version before save: %w", err)
+			}
+
+			// Legacy/orphaned rows may have empty or stale current_version_id.
+			// In that case we treat update as content-changing and append a fresh version.
+			if currentVersion != nil {
+				sameRevisionContent, err := s.hasSameRevisionContent(localCfg, currentVersion)
+				if err != nil {
+					return fmt.Errorf("compare revision content: %w", err)
+				}
+				if sameRevisionContent {
+					cfg = localdb.LocalToConfiguration(&locked)
+					return nil
+				}
+			}
+		}
+
 		if err := tx.Save(localCfg).Error; err != nil {
 			return fmt.Errorf("save local configuration: %w", err)
 		}
@@ -899,6 +1042,7 @@ func (s *LocalConfigurationService) saveWithVersionAndPending(localCfg *localdb.
 			return fmt.Errorf("update current version id: %w", err)
 		}
 		localCfg.CurrentVersionID = &version.ID
+		localCfg.CurrentVersion = version
 
 		cfg = localdb.LocalToConfiguration(localCfg)
 		if err := s.enqueueConfigurationPendingChangeTx(tx, localCfg, operation, version, createdBy); err != nil {
@@ -917,6 +1061,44 @@ func (s *LocalConfigurationService) saveWithVersionAndPending(localCfg *localdb.
 	return cfg, nil
 }
 
+func (s *LocalConfigurationService) loadCurrentVersionTx(tx *gorm.DB, localCfg *localdb.LocalConfiguration) (*localdb.LocalConfigurationVersion, error) {
+	var version localdb.LocalConfigurationVersion
+	if localCfg.CurrentVersionID != nil && *localCfg.CurrentVersionID != "" {
+		if err := tx.Where("id = ?", *localCfg.CurrentVersionID).First(&version).Error; err == nil {
+			return &version, nil
+		} else if !errors.Is(err, gorm.ErrRecordNotFound) {
+			return nil, err
+		}
+	}
+
+	if err := tx.Where("configuration_uuid = ?", localCfg.UUID).
+		Order("version_no DESC").
+		First(&version).Error; err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			return nil, nil
+		}
+		return nil, err
+	}
+	return &version, nil
+}
+
+func (s *LocalConfigurationService) hasSameRevisionContent(localCfg *localdb.LocalConfiguration, currentVersion *localdb.LocalConfigurationVersion) (bool, error) {
+	currentSnapshotCfg, err := s.decodeConfigurationSnapshot(currentVersion.Data)
+	if err != nil {
+		return false, fmt.Errorf("decode current version snapshot: %w", err)
+	}
+
+	currentFingerprint, err := localdb.BuildConfigurationSpecPriceFingerprint(currentSnapshotCfg)
+	if err != nil {
+		return false, fmt.Errorf("build current snapshot fingerprint: %w", err)
+	}
+	nextFingerprint, err := localdb.BuildConfigurationSpecPriceFingerprint(localCfg)
+	if err != nil {
+		return false, fmt.Errorf("build next snapshot fingerprint: %w", err)
+	}
+	return currentFingerprint == nextFingerprint, nil
+}
+
 func (s *LocalConfigurationService) appendVersionTx(
 	tx *gorm.DB,
 	localCfg *localdb.LocalConfiguration,

internal/services/local_configuration_versioning_test.go

@@ -27,8 +27,12 @@ func TestSaveCreatesNewVersionAndUpdatesCurrentPointer(t *testing.T) {
 		t.Fatalf("create config: %v", err)
 	}
 
-	if _, err := service.RenameNoAuth(created.UUID, "v2"); err != nil {
-		t.Fatalf("rename config: %v", err)
+	if _, err := service.UpdateNoAuth(created.UUID, &CreateConfigRequest{
+		Name:        "v1",
+		Items:       models.ConfigItems{{LotName: "CPU_A", Quantity: 2, UnitPrice: 1000}},
+		ServerCount: 1,
+	}); err != nil {
+		t.Fatalf("update config: %v", err)
 	}
 
 	versions := loadVersions(t, local, created.UUID)
@@ -60,8 +64,12 @@ func TestRollbackCreatesNewVersionWithTargetData(t *testing.T) {
 		t.Fatalf("create config: %v", err)
 	}
 
-	if _, err := service.RenameNoAuth(created.UUID, "changed"); err != nil {
-		t.Fatalf("rename config: %v", err)
+	if _, err := service.UpdateNoAuth(created.UUID, &CreateConfigRequest{
+		Name:        "base",
+		Items:       models.ConfigItems{{LotName: "RAM_A", Quantity: 3, UnitPrice: 100}},
+		ServerCount: 1,
+	}); err != nil {
+		t.Fatalf("update config: %v", err)
 	}
 	if _, err := service.RollbackToVersionWithNote(created.UUID, 1, "tester", "test rollback"); err != nil {
 		t.Fatalf("rollback to v1: %v", err)
@@ -79,6 +87,56 @@ func TestRollbackCreatesNewVersionWithTargetData(t *testing.T) {
 	}
 }
 
+func TestUpdateNoAuthSkipsRevisionWhenSpecAndPriceUnchanged(t *testing.T) {
+	service, local := newLocalConfigServiceForTest(t)
+
+	created, err := service.Create("tester", &CreateConfigRequest{
+		Name:        "dedupe",
+		Items:       models.ConfigItems{{LotName: "CPU_A", Quantity: 1, UnitPrice: 1000}},
+		ServerCount: 1,
+	})
+	if err != nil {
+		t.Fatalf("create config: %v", err)
+	}
+
+	_, err = service.UpdateNoAuth(created.UUID, &CreateConfigRequest{
+		Name:        "dedupe",
+		Items:       models.ConfigItems{{LotName: "CPU_A", Quantity: 2, UnitPrice: 1000}},
+		ServerCount: 1,
+	})
+	if err != nil {
+		t.Fatalf("first update config: %v", err)
+	}
+
+	_, err = service.UpdateNoAuth(created.UUID, &CreateConfigRequest{
+		Name:        "dedupe",
+		Items:       models.ConfigItems{{LotName: "CPU_A", Quantity: 2, UnitPrice: 1000}},
+		ServerCount: 1,
+	})
+	if err != nil {
+		t.Fatalf("second update config: %v", err)
+	}
+
+	versions := loadVersions(t, local, created.UUID)
+	if len(versions) != 2 {
+		t.Fatalf("expected 2 versions (create + first update), got %d", len(versions))
+	}
+	if versions[1].VersionNo != 2 {
+		t.Fatalf("expected latest version_no=2, got %d", versions[1].VersionNo)
+	}
+
+	var pendingCount int64
+	if err := local.DB().
+		Table("pending_changes").
+		Where("entity_type = ? AND entity_uuid = ?", "configuration", created.UUID).
+		Count(&pendingCount).Error; err != nil {
+		t.Fatalf("count pending changes: %v", err)
+	}
+	if pendingCount != 2 {
+		t.Fatalf("expected 2 pending changes (create + first update), got %d", pendingCount)
+	}
+}
+
 func TestAppendOnlyInvariantOldRowsUnchanged(t *testing.T) {
 	service, local := newLocalConfigServiceForTest(t)
 
@@ -97,8 +155,12 @@ func TestAppendOnlyInvariantOldRowsUnchanged(t *testing.T) {
 	}
 	v1Before := versionsBefore[0]
 
-	if _, err := service.RenameNoAuth(created.UUID, "after-rename"); err != nil {
-		t.Fatalf("rename config: %v", err)
+	if _, err := service.UpdateNoAuth(created.UUID, &CreateConfigRequest{
+		Name:        "initial",
+		Items:       models.ConfigItems{{LotName: "SSD_A", Quantity: 2, UnitPrice: 300}},
+		ServerCount: 1,
+	}); err != nil {
+		t.Fatalf("update config: %v", err)
 	}
 	if _, err := service.RollbackToVersion(created.UUID, 1, "tester"); err != nil {
 		t.Fatalf("rollback: %v", err)
@@ -144,7 +206,7 @@ func TestConcurrentSaveNoDuplicateVersionNumbers(t *testing.T) {
 		go func() {
 			defer wg.Done()
 			<-start
-			if err := renameWithRetry(service, created.UUID, fmt.Sprintf("name-%d", i)); err != nil {
+			if err := updateWithRetry(service, created.UUID, i+2); err != nil {
 				errCh <- err
 			}
 		}()
@@ -191,7 +253,8 @@ func TestUpdateNoAuthKeepsProjectWhenProjectUUIDOmitted(t *testing.T) {
 	project := &localdb.LocalProject{
 		UUID:          "project-keep",
 		OwnerUsername: "tester",
-		Name:          "Keep Project",
+		Code:          "TEST-KEEP",
+		Name:          ptrString("Keep Project"),
 		IsActive:      true,
 		CreatedAt:     time.Now(),
 		UpdatedAt:     time.Now(),
@@ -227,6 +290,103 @@ func TestUpdateNoAuthKeepsProjectWhenProjectUUIDOmitted(t *testing.T) {
 	}
 }
 
+func TestUpdateNoAuthAllowsOrphanProjectWhenUUIDUnchanged(t *testing.T) {
+	service, local := newLocalConfigServiceForTest(t)
+
+	project := &localdb.LocalProject{
+		UUID:          "project-orphan",
+		OwnerUsername: "tester",
+		Code:          "TEST-ORPHAN",
+		Name:          ptrString("Orphan Project"),
+		IsActive:      true,
+		CreatedAt:     time.Now(),
+		UpdatedAt:     time.Now(),
+		SyncStatus:    "synced",
+	}
+	if err := local.SaveProject(project); err != nil {
+		t.Fatalf("save project: %v", err)
+	}
+
+	created, err := service.Create("tester", &CreateConfigRequest{
+		Name:        "cfg",
+		ProjectUUID: &project.UUID,
+		Items:       models.ConfigItems{{LotName: "CPU_A", Quantity: 1, UnitPrice: 100}},
+		ServerCount: 1,
+	})
+	if err != nil {
+		t.Fatalf("create config: %v", err)
+	}
+
+	// Simulate missing project in local cache while config still references its UUID.
+	if err := local.DB().Where("uuid = ?", project.UUID).Delete(&localdb.LocalProject{}).Error; err != nil {
+		t.Fatalf("delete project: %v", err)
+	}
+
+	updated, err := service.UpdateNoAuth(created.UUID, &CreateConfigRequest{
+		Name:        "cfg-updated",
+		ProjectUUID: &project.UUID,
+		Items:       models.ConfigItems{{LotName: "CPU_A", Quantity: 2, UnitPrice: 100}},
+		ServerCount: 1,
+	})
+	if err != nil {
+		t.Fatalf("update config with orphan project_uuid: %v", err)
+	}
+	if updated.ProjectUUID == nil || *updated.ProjectUUID != project.UUID {
+		t.Fatalf("expected project_uuid to stay %s after update, got %+v", project.UUID, updated.ProjectUUID)
+	}
+}
+
+func TestUpdateNoAuthRecoversWhenCurrentVersionMissing(t *testing.T) {
+	service, local := newLocalConfigServiceForTest(t)
+
+	created, err := service.Create("tester", &CreateConfigRequest{
+		Name:        "cfg",
+		Items:       models.ConfigItems{{LotName: "CPU_A", Quantity: 1, UnitPrice: 100}},
+		ServerCount: 1,
+	})
+	if err != nil {
+		t.Fatalf("create config: %v", err)
+	}
+
+	// Simulate corrupted/legacy versioning state:
+	// local configuration exists, but all version rows are gone and pointer is stale.
+	if err := local.DB().Where("configuration_uuid = ?", created.UUID).
+		Delete(&localdb.LocalConfigurationVersion{}).Error; err != nil {
+		t.Fatalf("delete versions: %v", err)
+	}
+	staleID := "missing-version-id"
+	if err := local.DB().Model(&localdb.LocalConfiguration{}).
+		Where("uuid = ?", created.UUID).
+		Update("current_version_id", staleID).Error; err != nil {
+		t.Fatalf("set stale current_version_id: %v", err)
+	}
+
+	updated, err := service.UpdateNoAuth(created.UUID, &CreateConfigRequest{
+		Name:        "cfg-updated",
+		Items:       models.ConfigItems{{LotName: "CPU_A", Quantity: 2, UnitPrice: 100}},
+		ServerCount: 1,
+	})
+	if err != nil {
+		t.Fatalf("update config with missing current version: %v", err)
+	}
+
+	if updated.Name != "cfg-updated" {
+		t.Fatalf("expected updated name, got %q", updated.Name)
+	}
+
+	versions := loadVersions(t, local, created.UUID)
+	if len(versions) != 1 {
+		t.Fatalf("expected 1 recreated version, got %d", len(versions))
+	}
+	if versions[0].VersionNo != 1 {
+		t.Fatalf("expected recreated version_no=1, got %d", versions[0].VersionNo)
+	}
+}
+
+func ptrString(value string) *string {
+	return &value
+}
+
 func newLocalConfigServiceForTest(t *testing.T) (*LocalConfigurationService, *localdb.LocalDB) {
 	t.Helper()
 
@@ -259,10 +419,14 @@ func loadVersions(t *testing.T, local *localdb.LocalDB, configurationUUID string
 	return versions
 }
 
-func renameWithRetry(service *LocalConfigurationService, uuid string, name string) error {
+func updateWithRetry(service *LocalConfigurationService, uuid string, quantity int) error {
 	var lastErr error
 	for i := 0; i < 6; i++ {
-		_, err := service.RenameNoAuth(uuid, name)
+		_, err := service.UpdateNoAuth(uuid, &CreateConfigRequest{
+			Name:        "base",
+			Items:       models.ConfigItems{{LotName: "NIC_A", Quantity: quantity, UnitPrice: 150}},
+			ServerCount: 1,
+		})
 		if err == nil {
 			return nil
 		}
@@ -273,7 +437,7 @@ func renameWithRetry(service *LocalConfigurationService, uuid string, name strin
 		}
 		return err
 	}
-	return fmt.Errorf("rename retries exhausted: %w", lastErr)
+	return fmt.Errorf("update retries exhausted: %w", lastErr)
 }
 
 func TestRollbackVersionSnapshotJSONMatchesV1(t *testing.T) {
@@ -287,8 +451,12 @@ func TestRollbackVersionSnapshotJSONMatchesV1(t *testing.T) {
 	if err != nil {
 		t.Fatalf("create config: %v", err)
 	}
-	if _, err := service.RenameNoAuth(created.UUID, "second"); err != nil {
-		t.Fatalf("rename: %v", err)
+	if _, err := service.UpdateNoAuth(created.UUID, &CreateConfigRequest{
+		Name:        "initial",
+		Items:       models.ConfigItems{{LotName: "GPU_A", Quantity: 2, UnitPrice: 2000}},
+		ServerCount: 1,
+	}); err != nil {
+		t.Fatalf("update: %v", err)
 	}
 	if _, err := service.RollbackToVersion(created.UUID, 1, "tester"); err != nil {
 		t.Fatalf("rollback: %v", err)

internal/services/project.go

@@ -16,8 +16,10 @@ import (
 )
 
 var (
-	ErrProjectNotFound  = errors.New("project not found")
-	ErrProjectForbidden = errors.New("access to project forbidden")
+	ErrProjectNotFound          = errors.New("project not found")
+	ErrProjectForbidden         = errors.New("access to project forbidden")
+	ErrProjectCodeExists        = errors.New("project code and variant already exist")
+	ErrCannotDeleteMainVariant  = errors.New("cannot delete main variant")
 )
 
 type ProjectService struct {
@@ -29,12 +31,16 @@ func NewProjectService(localDB *localdb.LocalDB) *ProjectService {
 }
 
 type CreateProjectRequest struct {
-	Name       string `json:"name"`
+	Code       string `json:"code"`
+	Variant    string `json:"variant,omitempty"`
+	Name       *string `json:"name,omitempty"`
 	TrackerURL string `json:"tracker_url"`
 }
 
 type UpdateProjectRequest struct {
-	Name       string  `json:"name"`
+	Code       *string `json:"code,omitempty"`
+	Variant    *string `json:"variant,omitempty"`
+	Name       *string `json:"name,omitempty"`
 	TrackerURL *string `json:"tracker_url,omitempty"`
 }
 
@@ -45,17 +51,30 @@ type ProjectConfigurationsResult struct {
 }
 
 func (s *ProjectService) Create(ownerUsername string, req *CreateProjectRequest) (*models.Project, error) {
-	name := strings.TrimSpace(req.Name)
-	if name == "" {
-		return nil, fmt.Errorf("project name is required")
+	var namePtr *string
+	if req.Name != nil {
+		name := strings.TrimSpace(*req.Name)
+		if name != "" {
+			namePtr = &name
+		}
+	}
+	code := strings.TrimSpace(req.Code)
+	if code == "" {
+		return nil, fmt.Errorf("project code is required")
+	}
+	variant := strings.TrimSpace(req.Variant)
+	if err := s.ensureUniqueProjectCodeVariant("", code, variant); err != nil {
+		return nil, err
 	}
 
 	now := time.Now()
 	localProject := &localdb.LocalProject{
 		UUID:          uuid.NewString(),
 		OwnerUsername: ownerUsername,
-		Name:          name,
-		TrackerURL:    normalizeProjectTrackerURL(name, req.TrackerURL),
+		Code:          code,
+		Variant:       variant,
+		Name:          namePtr,
+		TrackerURL:    normalizeProjectTrackerURL(code, req.TrackerURL),
 		IsActive:      true,
 		IsSystem:      false,
 		CreatedAt:     now,
@@ -76,20 +95,33 @@ func (s *ProjectService) Update(projectUUID, ownerUsername string, req *UpdatePr
 	if err != nil {
 		return nil, ErrProjectNotFound
 	}
-	if localProject.OwnerUsername != ownerUsername {
-		return nil, ErrProjectForbidden
+
+	if req.Code != nil {
+		code := strings.TrimSpace(*req.Code)
+		if code == "" {
+			return nil, fmt.Errorf("project code is required")
+		}
+		localProject.Code = code
+	}
+	if req.Variant != nil {
+		localProject.Variant = strings.TrimSpace(*req.Variant)
+	}
+	if err := s.ensureUniqueProjectCodeVariant(projectUUID, localProject.Code, localProject.Variant); err != nil {
+		return nil, err
 	}
 
-	name := strings.TrimSpace(req.Name)
-	if name == "" {
-		return nil, fmt.Errorf("project name is required")
+	if req.Name != nil {
+		name := strings.TrimSpace(*req.Name)
+		if name == "" {
+			localProject.Name = nil
+		} else {
+			localProject.Name = &name
+		}
 	}
-
-	localProject.Name = name
 	if req.TrackerURL != nil {
-		localProject.TrackerURL = normalizeProjectTrackerURL(name, *req.TrackerURL)
+		localProject.TrackerURL = normalizeProjectTrackerURL(localProject.Code, *req.TrackerURL)
 	} else if strings.TrimSpace(localProject.TrackerURL) == "" {
-		localProject.TrackerURL = normalizeProjectTrackerURL(name, "")
+		localProject.TrackerURL = normalizeProjectTrackerURL(localProject.Code, "")
 	}
 	localProject.UpdatedAt = time.Now()
 	localProject.SyncStatus = "pending"
@@ -102,6 +134,38 @@ func (s *ProjectService) Update(projectUUID, ownerUsername string, req *UpdatePr
 	return localdb.LocalToProject(localProject), nil
 }
 
+func (s *ProjectService) ensureUniqueProjectCodeVariant(excludeUUID, code, variant string) error {
+	normalizedCode := normalizeProjectCode(code)
+	normalizedVariant := normalizeProjectVariant(variant)
+	if normalizedCode == "" {
+		return fmt.Errorf("project code is required")
+	}
+
+	projects, err := s.localDB.GetAllProjects(true)
+	if err != nil {
+		return err
+	}
+	for i := range projects {
+		project := projects[i]
+		if excludeUUID != "" && project.UUID == excludeUUID {
+			continue
+		}
+		if normalizeProjectCode(project.Code) == normalizedCode &&
+			normalizeProjectVariant(project.Variant) == normalizedVariant {
+			return ErrProjectCodeExists
+		}
+	}
+	return nil
+}
+
+func normalizeProjectCode(code string) string {
+	return strings.ToLower(strings.TrimSpace(code))
+}
+
+func normalizeProjectVariant(variant string) string {
+	return strings.ToLower(strings.TrimSpace(variant))
+}
+
 func (s *ProjectService) Archive(projectUUID, ownerUsername string) error {
 	return s.setProjectActive(projectUUID, ownerUsername, false)
 }
@@ -110,15 +174,23 @@ func (s *ProjectService) Reactivate(projectUUID, ownerUsername string) error {
 	return s.setProjectActive(projectUUID, ownerUsername, true)
 }
 
+func (s *ProjectService) DeleteVariant(projectUUID, ownerUsername string) error {
+	localProject, err := s.localDB.GetProjectByUUID(projectUUID)
+	if err != nil {
+		return ErrProjectNotFound
+	}
+	if strings.TrimSpace(localProject.Variant) == "" {
+		return ErrCannotDeleteMainVariant
+	}
+	return s.setProjectActive(projectUUID, ownerUsername, false)
+}
+
 func (s *ProjectService) setProjectActive(projectUUID, ownerUsername string, isActive bool) error {
 	return s.localDB.DB().Transaction(func(tx *gorm.DB) error {
 		var project localdb.LocalProject
 		if err := tx.Where("uuid = ?", projectUUID).First(&project).Error; err != nil {
 			return ErrProjectNotFound
 		}
-		if project.OwnerUsername != ownerUsername {
-			return ErrProjectForbidden
-		}
 		if project.IsActive == isActive {
 			return nil
 		}
@@ -203,8 +275,8 @@ func (s *ProjectService) ListConfigurations(projectUUID, ownerUsername, status s
 		}, nil
 	}
 
-	localConfigs, err := s.localDB.GetConfigurations()
-	if err != nil {
+	var localConfigs []localdb.LocalConfiguration
+	if err := s.localDB.DB().Preload("CurrentVersion").Order("created_at DESC").Find(&localConfigs).Error; err != nil {
 		return nil, err
 	}
 

internal/services/quote.go

@@ -78,6 +78,7 @@ type QuoteRequest struct {
 		LotName  string `json:"lot_name"`
 		Quantity int    `json:"quantity"`
 	} `json:"items"`
+	PricelistID *uint `json:"pricelist_id,omitempty"` // Optional: use specific pricelist for pricing
 }
 
 type PriceLevelsRequest struct {
@@ -123,6 +124,16 @@ func (s *QuoteService) ValidateAndCalculate(req *QuoteRequest) (*QuoteValidation
 			Warnings: make([]string, 0),
 		}
 
+		// Determine which pricelist to use for pricing
+		pricelistID := req.PricelistID
+		if pricelistID == nil || *pricelistID == 0 {
+			// By default, use latest estimate pricelist
+			latestPricelist, err := s.localDB.GetLatestLocalPricelistBySource("estimate")
+			if err == nil && latestPricelist != nil {
+				pricelistID = &latestPricelist.ServerID
+			}
+		}
+
 		var total float64
 		for _, reqItem := range req.Items {
 			localComp, err := s.localDB.GetLocalComponent(reqItem.LotName)
@@ -142,13 +153,19 @@ func (s *QuoteService) ValidateAndCalculate(req *QuoteRequest) (*QuoteValidation
 				TotalPrice:  0,
 			}
 
-			if localComp.CurrentPrice != nil && *localComp.CurrentPrice > 0 {
-				item.UnitPrice = *localComp.CurrentPrice
-				item.TotalPrice = *localComp.CurrentPrice * float64(reqItem.Quantity)
-				item.HasPrice = true
-				total += item.TotalPrice
+			// Get price from pricelist_items
+			if pricelistID != nil {
+				price, found := s.lookupPriceByPricelistID(*pricelistID, reqItem.LotName)
+				if found && price > 0 {
+					item.UnitPrice = price
+					item.TotalPrice = price * float64(reqItem.Quantity)
+					item.HasPrice = true
+					total += item.TotalPrice
+				} else {
+					result.Warnings = append(result.Warnings, "No price available for: "+reqItem.LotName)
+				}
 			} else {
-				result.Warnings = append(result.Warnings, "No price available for: "+reqItem.LotName)
+				result.Warnings = append(result.Warnings, "No pricelist available for: "+reqItem.LotName)
 			}
 
 			result.Items = append(result.Items, item)

internal/services/sync/readiness.go

@@ -189,33 +189,54 @@ func listActiveClientMigrations(db *gorm.DB) ([]clientLocalMigration, error) {
 }
 
 func ensureClientMigrationRegistryTable(db *gorm.DB) error {
-	if err := db.Exec(`
-		CREATE TABLE IF NOT EXISTS qt_client_local_migrations (
-			id VARCHAR(128) NOT NULL,
-			name VARCHAR(255) NOT NULL,
-			sql_text LONGTEXT NOT NULL,
-			checksum VARCHAR(128) NOT NULL,
-			min_app_version VARCHAR(64) NULL,
-			order_no INT NOT NULL DEFAULT 0,
-			is_active TINYINT(1) NOT NULL DEFAULT 1,
-			created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
-			PRIMARY KEY (id),
-			INDEX idx_qt_client_local_migrations_active_order (is_active, order_no, created_at)
-		)
-	`).Error; err != nil {
-		return err
+	// Check if table exists instead of trying to create (avoids permission issues)
+	if !tableExists(db, "qt_client_local_migrations") {
+		if err := db.Exec(`
+			CREATE TABLE IF NOT EXISTS qt_client_local_migrations (
+				id VARCHAR(128) NOT NULL,
+				name VARCHAR(255) NOT NULL,
+				sql_text LONGTEXT NOT NULL,
+				checksum VARCHAR(128) NOT NULL,
+				min_app_version VARCHAR(64) NULL,
+				order_no INT NOT NULL DEFAULT 0,
+				is_active TINYINT(1) NOT NULL DEFAULT 1,
+				created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+				PRIMARY KEY (id),
+				INDEX idx_qt_client_local_migrations_active_order (is_active, order_no, created_at)
+			)
+		`).Error; err != nil {
+			return fmt.Errorf("create qt_client_local_migrations table: %w", err)
+		}
 	}
-	return db.Exec(`
-		CREATE TABLE IF NOT EXISTS qt_client_schema_state (
-			username VARCHAR(100) NOT NULL,
-			last_applied_migration_id VARCHAR(128) NULL,
-			app_version VARCHAR(64) NULL,
-			last_checked_at DATETIME NOT NULL,
-			updated_at DATETIME NOT NULL,
-			PRIMARY KEY (username),
-			INDEX idx_qt_client_schema_state_checked (last_checked_at)
-		)
-	`).Error
+
+	if !tableExists(db, "qt_client_schema_state") {
+		if err := db.Exec(`
+			CREATE TABLE IF NOT EXISTS qt_client_schema_state (
+				username VARCHAR(100) NOT NULL,
+				last_applied_migration_id VARCHAR(128) NULL,
+				app_version VARCHAR(64) NULL,
+				last_checked_at DATETIME NOT NULL,
+				updated_at DATETIME NOT NULL,
+				PRIMARY KEY (username),
+				INDEX idx_qt_client_schema_state_checked (last_checked_at)
+			)
+		`).Error; err != nil {
+			return fmt.Errorf("create qt_client_schema_state table: %w", err)
+		}
+	}
+	return nil
+}
+
+func tableExists(db *gorm.DB, tableName string) bool {
+	var count int64
+	// For MariaDB/MySQL, check information_schema
+	if err := db.Raw(`
+		SELECT COUNT(*) FROM information_schema.TABLES
+		WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = ?
+	`, tableName).Scan(&count).Error; err != nil {
+		return false
+	}
+	return count > 0
 }
 
 func (s *Service) applyMissingRemoteMigrations(migrations []clientLocalMigration) error {

internal/services/sync/service.go

@@ -200,6 +200,7 @@ func (s *Service) ImportProjectsToLocal() (*ProjectImportResult, error) {
 				}
 
 				existing.OwnerUsername = project.OwnerUsername
+				existing.Code = project.Code
 				existing.Name = project.Name
 				existing.TrackerURL = project.TrackerURL
 				existing.IsActive = project.IsActive
@@ -346,16 +347,18 @@ func (s *Service) SyncPricelists() (int, error) {
 	}
 
 	synced := 0
-	var latestEstimateLocalID uint
-	var latestEstimateCreatedAt time.Time
 	for _, pl := range serverPricelists {
 		// Check if pricelist already exists locally
 		existing, _ := s.localDB.GetLocalPricelistByServerID(pl.ID)
 		if existing != nil {
-			// Track latest estimate pricelist by created_at for component refresh.
-			if pl.Source == string(models.PricelistSourceEstimate) && (latestEstimateCreatedAt.IsZero() || pl.CreatedAt.After(latestEstimateCreatedAt)) {
-				latestEstimateCreatedAt = pl.CreatedAt
-				latestEstimateLocalID = existing.ID
+			// Backfill items for legacy/partial local caches where only pricelist metadata exists.
+			if s.localDB.CountLocalPricelistItems(existing.ID) == 0 {
+				itemCount, err := s.SyncPricelistItems(existing.ID)
+				if err != nil {
+					slog.Warn("failed to sync missing pricelist items for existing local pricelist", "version", pl.Version, "error", err)
+				} else {
+					slog.Info("synced missing pricelist items for existing local pricelist", "version", pl.Version, "items", itemCount)
+				}
 			}
 			continue
 		}
@@ -385,10 +388,6 @@ func (s *Service) SyncPricelists() (int, error) {
 			slog.Debug("synced pricelist with items", "version", pl.Version, "items", itemCount)
 		}
 
-		if pl.Source == string(models.PricelistSourceEstimate) && (latestEstimateCreatedAt.IsZero() || pl.CreatedAt.After(latestEstimateCreatedAt)) {
-			latestEstimateCreatedAt = pl.CreatedAt
-			latestEstimateLocalID = localPL.ID
-		}
 		synced++
 	}
 
@@ -399,15 +398,8 @@ func (s *Service) SyncPricelists() (int, error) {
 		slog.Info("deleted stale local pricelists", "deleted", removed)
 	}
 
-	// Update component prices from latest estimate pricelist only.
-	if latestEstimateLocalID > 0 {
-		updated, err := s.localDB.UpdateComponentPricesFromPricelist(latestEstimateLocalID)
-		if err != nil {
-			slog.Warn("failed to update component prices from pricelist", "error", err)
-		} else {
-			slog.Info("updated component prices from latest pricelist", "updated", updated)
-		}
-	}
+	// Backfill lot_category for used pricelists (older local caches may miss the column values).
+	s.backfillUsedPricelistItemCategories(pricelistRepo, serverPricelistIDs)
 
 	// Update last sync time
 	s.localDB.SetLastSyncTime(time.Now())
@@ -417,6 +409,83 @@ func (s *Service) SyncPricelists() (int, error) {
 	return synced, nil
 }
 
+func (s *Service) backfillUsedPricelistItemCategories(pricelistRepo *repository.PricelistRepository, activeServerPricelistIDs []uint) {
+	if s.localDB == nil || pricelistRepo == nil {
+		return
+	}
+
+	activeSet := make(map[uint]struct{}, len(activeServerPricelistIDs))
+	for _, id := range activeServerPricelistIDs {
+		activeSet[id] = struct{}{}
+	}
+
+	type row struct {
+		ID uint `gorm:"column:id"`
+	}
+	var usedRows []row
+	if err := s.localDB.DB().Raw(`
+		SELECT DISTINCT pricelist_id AS id
+		FROM local_configurations
+		WHERE is_active = 1 AND pricelist_id IS NOT NULL
+		UNION
+		SELECT DISTINCT warehouse_pricelist_id AS id
+		FROM local_configurations
+		WHERE is_active = 1 AND warehouse_pricelist_id IS NOT NULL
+		UNION
+		SELECT DISTINCT competitor_pricelist_id AS id
+		FROM local_configurations
+		WHERE is_active = 1 AND competitor_pricelist_id IS NOT NULL
+	`).Scan(&usedRows).Error; err != nil {
+		slog.Warn("pricelist category backfill: failed to list used pricelists", "error", err)
+		return
+	}
+
+	for _, r := range usedRows {
+		serverID := r.ID
+		if serverID == 0 {
+			continue
+		}
+		if _, ok := activeSet[serverID]; !ok {
+			// Not present on server (or not active) - cannot backfill from remote.
+			continue
+		}
+
+		localPL, err := s.localDB.GetLocalPricelistByServerID(serverID)
+		if err != nil || localPL == nil {
+			continue
+		}
+
+		if s.localDB.CountLocalPricelistItems(localPL.ID) == 0 {
+			continue
+		}
+
+		missing, err := s.localDB.CountLocalPricelistItemsWithEmptyCategory(localPL.ID)
+		if err != nil {
+			slog.Warn("pricelist category backfill: failed to check local items", "server_id", serverID, "error", err)
+			continue
+		}
+		if missing == 0 {
+			continue
+		}
+
+		serverItems, _, err := pricelistRepo.GetItems(serverID, 0, 10000, "")
+		if err != nil {
+			slog.Warn("pricelist category backfill: failed to load server items", "server_id", serverID, "error", err)
+			continue
+		}
+		localItems := make([]localdb.LocalPricelistItem, len(serverItems))
+		for i := range serverItems {
+			localItems[i] = *localdb.PricelistItemToLocal(&serverItems[i], localPL.ID)
+		}
+
+		if err := s.localDB.ReplaceLocalPricelistItems(localPL.ID, localItems); err != nil {
+			slog.Warn("pricelist category backfill: failed to replace local items", "server_id", serverID, "error", err)
+			continue
+		}
+		slog.Info("pricelist category backfill: refreshed local items", "server_id", serverID, "items", len(localItems))
+	}
+}
+
 // RecordSyncHeartbeat updates shared sync heartbeat for current DB user.
 // Only users with write rights are expected to be able to update this table.
 func (s *Service) RecordSyncHeartbeat() {
@@ -553,24 +622,34 @@ func (s *Service) listConnectedDBUsers(mariaDB *gorm.DB) (map[string]struct{}, e
 }
 
 func ensureUserSyncStatusTable(db *gorm.DB) error {
-	if err := db.Exec(`
-		CREATE TABLE IF NOT EXISTS qt_pricelist_sync_status (
-			username VARCHAR(100) NOT NULL,
-			last_sync_at DATETIME NOT NULL,
-			updated_at DATETIME NOT NULL,
-			app_version VARCHAR(64) NULL,
-			PRIMARY KEY (username),
-			INDEX idx_qt_pricelist_sync_status_last_sync (last_sync_at)
-		)
-	`).Error; err != nil {
-		return err
+	// Check if table exists instead of trying to create (avoids permission issues)
+	if !tableExists(db, "qt_pricelist_sync_status") {
+		if err := db.Exec(`
+			CREATE TABLE IF NOT EXISTS qt_pricelist_sync_status (
+				username VARCHAR(100) NOT NULL,
+				last_sync_at DATETIME NOT NULL,
+				updated_at DATETIME NOT NULL,
+				app_version VARCHAR(64) NULL,
+				PRIMARY KEY (username),
+				INDEX idx_qt_pricelist_sync_status_last_sync (last_sync_at)
+			)
+		`).Error; err != nil {
+			return fmt.Errorf("create qt_pricelist_sync_status table: %w", err)
+		}
 	}
 
 	// Backward compatibility for environments where table was created without app_version.
-	return db.Exec(`
-		ALTER TABLE qt_pricelist_sync_status
-		ADD COLUMN IF NOT EXISTS app_version VARCHAR(64) NULL
-	`).Error
+	// Only try to add column if table exists.
+	if tableExists(db, "qt_pricelist_sync_status") {
+		if err := db.Exec(`
+			ALTER TABLE qt_pricelist_sync_status
+			ADD COLUMN IF NOT EXISTS app_version VARCHAR(64) NULL
+		`).Error; err != nil {
+			// Log but don't fail if alter fails (column might already exist)
+			slog.Debug("failed to add app_version column", "error", err)
+		}
+	}
+	return nil
 }
 
 // SyncPricelistItems synchronizes items for a specific pricelist
@@ -606,15 +685,7 @@ func (s *Service) SyncPricelistItems(localPricelistID uint) (int, error) {
 	// Convert and save locally
 	localItems := make([]localdb.LocalPricelistItem, len(serverItems))
 	for i, item := range serverItems {
-		partnumbers := make(localdb.LocalStringList, 0, len(item.Partnumbers))
-		partnumbers = append(partnumbers, item.Partnumbers...)
-		localItems[i] = localdb.LocalPricelistItem{
-			PricelistID:  localPricelistID,
-			LotName:      item.LotName,
-			Price:        item.Price,
-			AvailableQty: item.AvailableQty,
-			Partnumbers:  partnumbers,
-		}
+		localItems[i] = *localdb.PricelistItemToLocal(&item, localPricelistID)
 	}
 
 	if err := s.localDB.SaveLocalPricelistItems(localItems); err != nil {
@@ -787,11 +858,36 @@ func (s *Service) pushProjectChange(change *localdb.PendingChange) error {
 	projectRepo := repository.NewProjectRepository(mariaDB)
 	project := payload.Snapshot
 	project.UUID = payload.ProjectUUID
-
-	if err := projectRepo.UpsertByUUID(&project); err != nil {
-		return fmt.Errorf("upsert project on server: %w", err)
+	if strings.TrimSpace(project.Code) == "" {
+		project.Code = strings.TrimSpace(derefString(project.Name))
+		if project.Code == "" {
+			project.Code = project.UUID
+		}
 	}
 
+	// Try upsert by UUID first
+	err = projectRepo.UpsertByUUID(&project)
+	if err != nil {
+		// Check if it's a duplicate (code, variant) constraint violation
+		// In this case, find existing project with same (code, variant) and link to it
+		var existing models.Project
+		lookupErr := mariaDB.Where("code = ? AND variant = ?", project.Code, project.Variant).First(&existing).Error
+		if lookupErr == nil {
+			// Found duplicate - link local project to existing server project
+			slog.Info("project duplicate found, linking to existing",
+				"local_uuid", project.UUID,
+				"server_uuid", existing.UUID,
+				"server_id", existing.ID,
+				"code", project.Code,
+				"variant", project.Variant)
+			project.ID = existing.ID
+		} else {
+			// Not a duplicate issue, return original error
+			return fmt.Errorf("upsert project on server: %w", err)
+		}
+	}
+
+	// Update local project with server ID
 	localProject, localErr := s.localDB.GetProjectByUUID(project.UUID)
 	if localErr == nil {
 		if project.ID > 0 {
@@ -807,6 +903,17 @@ func (s *Service) pushProjectChange(change *localdb.PendingChange) error {
 	return nil
 }
 
+func derefString(value *string) string {
+	if value == nil {
+		return ""
+	}
+	return *value
+}
+
+func ptrString(value string) *string {
+	return &value
+}
+
 func decodeProjectChangePayload(change *localdb.PendingChange) (ProjectChangePayload, error) {
 	var payload ProjectChangePayload
 	if err := json.Unmarshal([]byte(change.Payload), &payload); err == nil && payload.ProjectUUID != "" {
@@ -1077,7 +1184,8 @@ func (s *Service) ensureConfigurationProject(mariaDB *gorm.DB, cfg *models.Confi
 		systemProject = &models.Project{
 			UUID:          uuid.NewString(),
 			OwnerUsername: "",
-			Name:          "Без проекта",
+			Code:          "Без проекта",
+			Name:          ptrString("Без проекта"),
 			IsActive:      true,
 			IsSystem:      true,
 		}
@@ -1241,6 +1349,21 @@ func (s *Service) loadCurrentConfigurationState(configurationUUID string) (model
 		}
 	}
 
+	if currentVersionNo == 0 {
+		if err := s.repairMissingConfigurationVersion(localCfg); err != nil {
+			return models.Configuration{}, "", 0, fmt.Errorf("repair missing configuration version: %w", err)
+		}
+		var latest localdb.LocalConfigurationVersion
+		err = s.localDB.DB().
+			Where("configuration_uuid = ?", configurationUUID).
+			Order("version_no DESC").
+			First(&latest).Error
+		if err == nil {
+			currentVersionNo = latest.VersionNo
+			currentVersionID = latest.ID
+		}
+	}
+
 	if currentVersionNo == 0 {
 		return models.Configuration{}, "", 0, fmt.Errorf("no local configuration version found for %s", configurationUUID)
 	}
@@ -1248,6 +1371,64 @@ func (s *Service) loadCurrentConfigurationState(configurationUUID string) (model
 	return cfg, currentVersionID, currentVersionNo, nil
 }
 
+func (s *Service) repairMissingConfigurationVersion(localCfg *localdb.LocalConfiguration) error {
+	if localCfg == nil {
+		return fmt.Errorf("local configuration is nil")
+	}
+
+	return s.localDB.DB().Transaction(func(tx *gorm.DB) error {
+		var cfg localdb.LocalConfiguration
+		if err := tx.Where("uuid = ?", localCfg.UUID).First(&cfg).Error; err != nil {
+			return fmt.Errorf("load local configuration: %w", err)
+		}
+
+		// If versions exist, just make sure current_version_id is set.
+		var latest localdb.LocalConfigurationVersion
+		if err := tx.Where("configuration_uuid = ?", cfg.UUID).
+			Order("version_no DESC").
+			First(&latest).Error; err == nil {
+			if cfg.CurrentVersionID == nil || *cfg.CurrentVersionID == "" {
+				if err := tx.Model(&localdb.LocalConfiguration{}).
+					Where("uuid = ?", cfg.UUID).
+					Update("current_version_id", latest.ID).Error; err != nil {
+					return fmt.Errorf("set current version id: %w", err)
+				}
+			}
+			return nil
+		} else if !errors.Is(err, gorm.ErrRecordNotFound) {
+			return fmt.Errorf("load latest version: %w", err)
+		}
+
+		snapshot, err := localdb.BuildConfigurationSnapshot(&cfg)
+		if err != nil {
+			return fmt.Errorf("build configuration snapshot: %w", err)
+		}
+
+		note := "Auto-repaired missing local version"
+		version := localdb.LocalConfigurationVersion{
+			ID:                uuid.NewString(),
+			ConfigurationUUID: cfg.UUID,
+			VersionNo:         1,
+			Data:              snapshot,
+			ChangeNote:        &note,
+			AppVersion:        appmeta.Version(),
+			CreatedAt:         time.Now(),
+		}
+
+		if err := tx.Create(&version).Error; err != nil {
+			return fmt.Errorf("create initial version: %w", err)
+		}
+		if err := tx.Model(&localdb.LocalConfiguration{}).
+			Where("uuid = ?", cfg.UUID).
+			Update("current_version_id", version.ID).Error; err != nil {
+			return fmt.Errorf("set current version id: %w", err)
+		}
+
+		slog.Warn("repaired missing local configuration version", "uuid", cfg.UUID, "version_no", version.VersionNo)
+		return nil
+	})
+}
+
 // NOTE: prepared for future conflict resolution:
 // when server starts storing version metadata, we can compare payload.CurrentVersionNo
 // against remote version and branch into custom strategies. For now use last-write-wins.

internal/services/sync/service_pricelist_category_backfill_test.go

@@ -0,0 +1,107 @@
+package sync_test
+
+import (
+	"testing"
+	"time"
+
+	"git.mchus.pro/mchus/quoteforge/internal/localdb"
+	"git.mchus.pro/mchus/quoteforge/internal/models"
+	syncsvc "git.mchus.pro/mchus/quoteforge/internal/services/sync"
+)
+
+func TestSyncPricelists_BackfillsLotCategoryForUsedPricelistItems(t *testing.T) {
+	local := newLocalDBForSyncTest(t)
+	serverDB := newServerDBForSyncTest(t)
+
+	if err := serverDB.AutoMigrate(
+		&models.Pricelist{},
+		&models.PricelistItem{},
+		&models.Lot{},
+		&models.LotPartnumber{},
+		&models.StockLog{},
+	); err != nil {
+		t.Fatalf("migrate server tables: %v", err)
+	}
+
+	serverPL := models.Pricelist{
+		Source:       "estimate",
+		Version:      "2026-02-11-001",
+		Notification: "server",
+		CreatedBy:    "tester",
+		IsActive:     true,
+		CreatedAt:    time.Now().Add(-1 * time.Hour),
+	}
+	if err := serverDB.Create(&serverPL).Error; err != nil {
+		t.Fatalf("create server pricelist: %v", err)
+	}
+	if err := serverDB.Create(&models.PricelistItem{
+		PricelistID:  serverPL.ID,
+		LotName:      "CPU_A",
+		LotCategory:  "CPU",
+		Price:        10,
+		PriceMethod:  "",
+		MetaPrices:   "",
+		ManualPrice:  nil,
+		AvailableQty: nil,
+	}).Error; err != nil {
+		t.Fatalf("create server pricelist item: %v", err)
+	}
+
+	if err := local.SaveLocalPricelist(&localdb.LocalPricelist{
+		ServerID:  serverPL.ID,
+		Source:    serverPL.Source,
+		Version:   serverPL.Version,
+		Name:      serverPL.Notification,
+		CreatedAt: serverPL.CreatedAt,
+		SyncedAt:  time.Now(),
+		IsUsed:    false,
+	}); err != nil {
+		t.Fatalf("seed local pricelist: %v", err)
+	}
+	localPL, err := local.GetLocalPricelistByServerID(serverPL.ID)
+	if err != nil {
+		t.Fatalf("get local pricelist: %v", err)
+	}
+
+	if err := local.SaveLocalPricelistItems([]localdb.LocalPricelistItem{
+		{
+			PricelistID: localPL.ID,
+			LotName:     "CPU_A",
+			LotCategory: "",
+			Price:       10,
+		},
+	}); err != nil {
+		t.Fatalf("seed local pricelist items: %v", err)
+	}
+
+	if err := local.SaveConfiguration(&localdb.LocalConfiguration{
+		UUID:             "cfg-1",
+		OriginalUsername: "tester",
+		Name:             "cfg",
+		Items:            localdb.LocalConfigItems{{LotName: "CPU_A", Quantity: 1, UnitPrice: 10}},
+		IsActive:         true,
+		PricelistID:      &serverPL.ID,
+		SyncStatus:       "synced",
+		CreatedAt:        time.Now().Add(-30 * time.Minute),
+		UpdatedAt:        time.Now().Add(-30 * time.Minute),
+	}); err != nil {
+		t.Fatalf("seed local configuration with pricelist ref: %v", err)
+	}
+
+	svc := syncsvc.NewServiceWithDB(serverDB, local)
+	if _, err := svc.SyncPricelists(); err != nil {
+		t.Fatalf("sync pricelists: %v", err)
+	}
+
+	items, err := local.GetLocalPricelistItems(localPL.ID)
+	if err != nil {
+		t.Fatalf("load local items: %v", err)
+	}
+	if len(items) != 1 {
+		t.Fatalf("expected 1 local item, got %d", len(items))
+	}
+	if items[0].LotCategory != "CPU" {
+		t.Fatalf("expected lot_category backfilled to CPU, got %q", items[0].LotCategory)
+	}
+}
+

internal/services/sync/service_projects_push_test.go

@@ -23,7 +23,7 @@ func TestPushPendingChangesProjectsBeforeConfigurations(t *testing.T) {
 	projectService := services.NewProjectService(local)
 	configService := services.NewLocalConfigurationService(local, localSync, &services.QuoteService{}, func() bool { return false })
 
-	project, err := projectService.Create("tester", &services.CreateProjectRequest{Name: "Project A"})
+	project, err := projectService.Create("tester", &services.CreateProjectRequest{Name: ptrString("Project A"), Code: "PRJ-A"})
 	if err != nil {
 		t.Fatalf("create project: %v", err)
 	}
@@ -74,11 +74,11 @@ func TestPushPendingChangesProjectCreateThenUpdateBeforeFirstPush(t *testing.T)
 	configService := services.NewLocalConfigurationService(local, localSync, &services.QuoteService{}, func() bool { return false })
 	pushService := syncsvc.NewServiceWithDB(serverDB, local)
 
-	project, err := projectService.Create("tester", &services.CreateProjectRequest{Name: "Project v1"})
+	project, err := projectService.Create("tester", &services.CreateProjectRequest{Name: ptrString("Project v1"), Code: "PRJ-V1"})
 	if err != nil {
 		t.Fatalf("create project: %v", err)
 	}
-	if _, err := projectService.Update(project.UUID, "tester", &services.UpdateProjectRequest{Name: "Project v2"}); err != nil {
+	if _, err := projectService.Update(project.UUID, "tester", &services.UpdateProjectRequest{Name: ptrString("Project v2")}); err != nil {
 		t.Fatalf("update project: %v", err)
 	}
 
@@ -100,8 +100,8 @@ func TestPushPendingChangesProjectCreateThenUpdateBeforeFirstPush(t *testing.T)
 	if err := serverDB.Where("uuid = ?", project.UUID).First(&serverProject).Error; err != nil {
 		t.Fatalf("project not pushed to server: %v", err)
 	}
-	if serverProject.Name != "Project v2" {
-		t.Fatalf("expected latest project name, got %q", serverProject.Name)
+	if serverProject.Name == nil || *serverProject.Name != "Project v2" {
+		t.Fatalf("expected latest project name, got %v", serverProject.Name)
 	}
 
 	var serverCfg models.Configuration
@@ -324,6 +324,8 @@ CREATE TABLE qt_projects (
 	id INTEGER PRIMARY KEY AUTOINCREMENT,
 	uuid TEXT NOT NULL UNIQUE,
 	owner_username TEXT NOT NULL,
+	code TEXT NOT NULL,
+	variant TEXT NOT NULL DEFAULT '',
 	name TEXT NOT NULL,
 	tracker_url TEXT NULL,
 	is_active INTEGER NOT NULL DEFAULT 1,
@@ -333,6 +335,9 @@ CREATE TABLE qt_projects (
 );`).Error; err != nil {
 		t.Fatalf("create qt_projects: %v", err)
 	}
+	if err := db.Exec(`CREATE UNIQUE INDEX idx_qt_projects_code_variant ON qt_projects(code, variant);`).Error; err != nil {
+		t.Fatalf("create qt_projects index: %v", err)
+	}
 	if err := db.Exec(`
 CREATE TABLE qt_configurations (
 	id INTEGER PRIMARY KEY AUTOINCREMENT,
@@ -348,6 +353,9 @@ CREATE TABLE qt_configurations (
 	notes TEXT NULL,
 	is_template INTEGER NOT NULL DEFAULT 0,
 	server_count INTEGER NOT NULL DEFAULT 1,
+	server_model TEXT NULL,
+	support_code TEXT NULL,
+	article TEXT NULL,
 	pricelist_id INTEGER NULL,
 	warehouse_pricelist_id INTEGER NULL,
 	competitor_pricelist_id INTEGER NULL,
@@ -361,6 +369,10 @@ CREATE TABLE qt_configurations (
 	return db
 }
 
+func ptrString(value string) *string {
+	return &value
+}
+
 func getCurrentVersionInfo(t *testing.T, local *localdb.LocalDB, configurationUUID string, currentVersionID *string) (int, string) {
 	t.Helper()
 	if currentVersionID == nil || *currentVersionID == "" {

markdown

@@ -0,0 +1,93 @@
+<p><strong>ТЕХНИЧЕСКОЕ ЗАДАНИЕ</strong></p>
+<p>1. Требования к продукции</p>
+<p>Поставляемое оборудование должно быть новым, оригинальным, не бывшим
+в употреблении, не восстановленным. Гарантийный срок — не менее 12
+месяцев с момента поставки. Все компоненты, включая процессоры, память,
+накопители и контроллеры, должны быть совместимы и предварительно
+протестированы на совместимость и производительность в рамках единой
+системы.</p>
+<p>2. Количественные и качественные характеристики</p>
+<p>2.1. Базовые требования к серверной платформе:</p>
+<p>Модель (артикул): Сервер в конфигурации с шасси, поддерживающим 12
+отсека 2.5" для накопителей NVMe U.2/U.3.</p>
+<p>Форм-фактор: 2U для установки в стойку.</p>
+<p>Кол-во процессорных сокетов: 1.</p>
+<p>2.2. Требования к процессорам (CPU):</p>
+<p>Количество: 1 шт.</p>
+<p>Модель/семейство: 256t x AMD EPYC 9755 2.7 GHz 128c-Core Processor
+Объём кэша L3: 512MB Техпроцесс: 4 нм, архитектура процессора: Zen-5
+(Turin).</p>
+<p>Минимальная базовая тактовая частота: 2.7 ГГц.</p>
+<p>Максимальная частота работы процессора (Turboboost): 4.1 GHz</p>
+<p>Для обеспечения полной производительности всех 12 накопителей NVMe и
+сетевых адаптеров, процессор и системная платформа в целом должны
+обеспечивать достаточно линий PCIe 5.0.</p>
+<p>2.3. Требования к оперативной памяти (RAM):</p>
+<p>Тип памяти: DDR5 с коррекцией ошибок (ECC) RDIMM 6000Mhz.</p>
+<p>Минимальный объем оперативной памяти: 2048 ГБ.</p>
+<p>Конфигурация: Модули памяти должны быть установлены в оптимальной
+конфигурации для обеспечения полной пропускной способности всех линий
+PCIe 5.0 от NVMe-накопителей. Платформа должна поддерживать установку не
+менее 16 модулей DDR5 ECC REG 6000Mhz для последующего
+масштабирования.</p>
+<p>Поддерживаемая частота: Не менее 6000 МТ/с.</p>
+<p>Одобренные модули оперативной памяти - Samsung/Micron/Hynix, DDR5,
+64GB, RDIMM, ECC</p>
+<p>2.4 Требования к системе хранения данных:</p>
+<p>Конфигурация шасси: Обязательна поставка в конфигурации с 12 отсеками
+2.5" под горячую замену, поддерживающими интерфейс NVMe через PCIe 5.0
+x4 и 2 отсеками 2.5"/М.2 под горячую замену, поддерживающими SATA.</p>
+<p>Дополнительно (для ОС): Поддержка установки 2x M.2 NVMe накопителей в
+dedicated-слотах на материнской плате под операционную систему отдельно
+от основного хранилища данных.</p>
+<p>2.5. Требования к сетевым интерфейсам (NIC):</p>
+<p>Слоты расширения сети: Наличие не менее 1 слотов OCP 3.0 SFF для
+установки специализированных сетевых адаптеров.</p>
+<p>Дополнительные сетевые адаптеры (обязательная поставка): Один сетевой
+адаптер OCP 3.0 с 2 портами 25 Гбит/с Ethernet Intel 810 или Mellanox
+CX-6.</p>
+<p>Встроенные порты управления: порт 1 Гбит/с Ethernet (RJ-45) для
+модуля управления iBMC.</p>
+<p>2.6. Требования к интерфейсам расширения (PCIe):</p>
+<p>Количество слотов PCIe: Конфигурация с 12 дисками NVMe использует
+большую часть линий PCIe. Тем не менее, не менее слотов PCIe 5.0 должны
+оставаться свободными для будущего расширения (например, установки
+дополнительных сетевых карт или FPGA/GPU для специфических задач).</p>
+<p>Шинная архитектура: Поставщик должен предоставить схему распределения
+линий PCIe 5.0 между процессором контроллером RAID и слотами расширения,
+подтверждающую отсутствие узких мест (bottlenecks).</p>
+<p>2.7. Требования к системе управления:</p>
+<p>Внеполосный (out-of-band) модуль управления: Наличие выделенного чипа
+iBMC.</p>
+<p>Интеллектуальные функции: Критически важна поддержка детального
+мониторинга состояния NVMe-накопителей (SMART, температура, износ,
+прогнозирование сбоев) через интерфейс iBMC и поддержка технологии
+горячей замены NVMe-накопителей.</p>
+<p>Наличие безагентного КВМ (HTML5)</p>
+<p>Желательна поддержка shared LAN (через NCSI OCPv3 разъем) с
+тегированием VLAN, настройка по умолчанию DHCP IPv4</p>
+<p>Управление параметрами работы сервера (режим работы вентиляторов,
+потребление энергии, итд).</p>
+<p>Наличие 2х видов логирования:</p>
+<p>Все аппаратные события, включая ECC ошибки по памяти, ошибки PCIe,
+SATA (IPMI/Hardware Event Log)</p>
+<p>Все сессии аутентификации и изменения системных параметров
+(Audit/Security Log)</p>
+<p>Наличие функционала обновления прошивок сервера (BIOS, BMC, CPLD
+(опционально)) с сохранением и без сохранения настроек.</p>
+<p>2.8. Требования к системе питания и охлаждения:</p>
+<p>Блоки питания (PSU):</p>
+<p>Количество: 2 шт. (резервирование 1+1) с возможностью горячей
+замены.</p>
+<p>Номинальная мощность каждого: Минимум 1200 Вт с сертификацией 80 Plus
+Platinum/Titanium. Мощность должна быть достаточной для одновременной
+пиковой нагрузки от процессора, 12 NVMe-дисков и прочих компонентов.</p>
+<p>Система охлаждения: не менее N+1 резервирование вентиляторов.</p>
+<p>3. Упаковка и маркировка:</p>
+<p>Оборудование должно быть упаковано так, чтобы предотвратить
+повреждение при транспортировке.</p>
+<p>4. Требования к комплектации:</p>
+<p>Рельсовый комплект - без инструментов с горизонтальной загрузкой</p>
+<p>Оборудование - C19-C20 или С13-С14 кабели питания 1-2 m в зависимости
+от БП, 19 " комплект для монтажа в стойку, комплект винтов, все отсеки с
+корзинами.</p>

memory.md

@@ -0,0 +1,41 @@
+# Changes summary (2026-02-11)
+
+Implemented strict `lot_category` flow using `pricelist_items.lot_category` only (no parsing from `lot_name`), plus local caching and backfill:
+
+1. Local DB schema + migrations
+- Added `lot_category` column to `local_pricelist_items` via `LocalPricelistItem` model.
+- Added local migration `2026_02_11_local_pricelist_item_category` to add the column if missing and create indexes:
+  - `idx_local_pricelist_items_pricelist_lot (pricelist_id, lot_name)`
+  - `idx_local_pricelist_items_lot_category (lot_category)`
+
+2. Server model/repository
+- Added `LotCategory` field to `models.PricelistItem`.
+- `PricelistRepository.GetItems` now sets `Category` from `LotCategory` (no parsing from `lot_name`).
+
+3. Sync + local DB helpers
+- `SyncPricelistItems` now saves `lot_category` into local cache via `PricelistItemToLocal`.
+- Added `LocalDB.CountLocalPricelistItemsWithEmptyCategory` and `LocalDB.ReplaceLocalPricelistItems`.
+- Added `LocalDB.GetLocalLotCategoriesByServerPricelistID` for strict category lookup.
+- Added `SyncPricelists` backfill step: for used active pricelists with empty categories, force refresh items from server.
+
+4. API handler
+- `GET /api/pricelists/:id/items` returns `category` from `local_pricelist_items.lot_category` (no parsing from `lot_name`).
+
+5. Article category foundation
+- New package `internal/article`:
+  - `ResolveLotCategoriesStrict` pulls categories from local pricelist items and errors on missing category.
+  - `GroupForLotCategory` maps only allowed codes (CPU/MEM/GPU/M2/SSD/HDD/EDSFF/HHHL/NIC/HCA/DPU/PSU/PS) to article groups; excludes `SFP`.
+  - Error type `MissingCategoryForLotError` with base `ErrMissingCategoryForLot`.
+
+6. Tests
+- Added unit tests for converters and article category resolver.
+- Added handler test to ensure `/api/pricelists/:id/items` returns `lot_category`.
+- Added sync test for category backfill on used pricelist items.
+- `go test ./...` passed.
+
+Additional fixes (2026-02-11):
+- Fixed article parsing bug: CPU/GPU parsers were swapped in `internal/article/generator.go`. CPU now uses last token from CPU lot; GPU uses model+memory from `GPU_vendor_model_mem_iface`.
+- Adjusted configurator base tab layout to align labels on the same row (separate label row + input row grid).
+
+UI rule (2026-02-19):
+- In all breadcrumbs, truncate long specification/configuration names to 16 characters using ellipsis.

migrations/022_add_article_to_configurations.sql

@@ -0,0 +1,2 @@
+ALTER TABLE qt_configurations
+    ADD COLUMN IF NOT EXISTS article VARCHAR(80) NULL AFTER server_count;

migrations/023_add_server_model_to_configurations.sql

@@ -0,0 +1,2 @@
+ALTER TABLE qt_configurations
+    ADD COLUMN IF NOT EXISTS server_model VARCHAR(100) NULL AFTER server_count;

migrations/024_add_support_code_to_configurations.sql

@@ -0,0 +1,2 @@
+ALTER TABLE qt_configurations
+    ADD COLUMN IF NOT EXISTS support_code VARCHAR(20) NULL AFTER server_model;

migrations/025_add_project_code.sql

@@ -0,0 +1,38 @@
+-- Add project code and enforce uniqueness
+
+ALTER TABLE qt_projects
+    ADD COLUMN code VARCHAR(100) NULL AFTER owner_username;
+
+-- Copy code from current project name (truncate to fit)
+UPDATE qt_projects
+SET code = LEFT(TRIM(COALESCE(name, '')), 100);
+
+-- Fallback for any remaining blanks
+UPDATE qt_projects
+SET code = uuid
+WHERE code IS NULL OR TRIM(code) = '';
+
+-- Drop unique index if it already exists to allow de-duplication updates
+DROP INDEX IF EXISTS idx_qt_projects_code ON qt_projects;
+
+-- De-duplicate codes: OPS-1948-2, OPS-1948-3... (MariaDB without CTE)
+UPDATE qt_projects p
+JOIN (
+    SELECT p1.id,
+           p1.code AS base_code,
+           (
+               SELECT COUNT(*)
+               FROM qt_projects p2
+               WHERE p2.code = p1.code AND p2.id <= p1.id
+           ) AS rn
+    FROM qt_projects p1
+) r ON r.id = p.id
+SET p.code = CASE
+    WHEN r.rn = 1 THEN r.base_code
+    ELSE CONCAT(LEFT(r.base_code, 90), '-', r.rn)
+END;
+
+ALTER TABLE qt_projects
+    MODIFY COLUMN code VARCHAR(100) NOT NULL;
+
+CREATE UNIQUE INDEX idx_qt_projects_code ON qt_projects(code);

migrations/026_add_project_variant.sql

@@ -0,0 +1,28 @@
+-- Add project variant and reset codes from project names
+
+ALTER TABLE qt_projects
+    ADD COLUMN variant VARCHAR(100) NOT NULL DEFAULT '' AFTER code;
+
+-- Drop legacy unique index on code to allow duplicate codes
+DROP INDEX IF EXISTS idx_qt_projects_code ON qt_projects;
+DROP INDEX IF EXISTS idx_qt_projects_code_variant ON qt_projects;
+
+-- Reset code from name and clear variant
+UPDATE qt_projects
+SET code = LEFT(TRIM(COALESCE(name, '')), 100),
+    variant = '';
+
+-- De-duplicate by assigning variant numbers: -2, -3...
+UPDATE qt_projects p
+JOIN (
+    SELECT p1.id,
+           p1.code,
+           (SELECT COUNT(*)
+            FROM qt_projects p2
+            WHERE p2.code = p1.code AND p2.id <= p1.id) AS rn
+    FROM qt_projects p1
+) r ON r.id = p.id
+SET p.code = r.code,
+    p.variant = CASE WHEN r.rn = 1 THEN '' ELSE CONCAT('-', r.rn) END;
+
+CREATE UNIQUE INDEX idx_qt_projects_code_variant ON qt_projects(code, variant);

migrations/027_project_name_nullable.sql

@@ -0,0 +1,4 @@
+-- Allow NULL project names
+
+ALTER TABLE qt_projects
+    MODIFY COLUMN name VARCHAR(200) NULL;

releases/memory/v1.2.1.md

@@ -0,0 +1,72 @@
+# v1.2.1 Release Notes
+
+**Date:** 2026-02-09
+**Changes since v1.2.0:** 2 commits
+
+## Summary
+Fixed configurator component substitution by updating to work with new pricelist-based pricing model. Addresses regression from v1.2.0 refactor that removed `CurrentPrice` field from components.
+
+## Commits
+
+### 1. Refactor: Remove CurrentPrice from local_components (5984a57)
+**Type:** Refactor
+**Files Changed:** 11 files, +167 insertions, -194 deletions
+
+#### Overview
+Transitioned from component-based pricing to pricelist-based pricing model:
+- Removed `CurrentPrice` and `SyncedAt` from LocalComponent (metadata-only now)
+- Added `WarehousePricelistID` and `CompetitorPricelistID` to LocalConfiguration
+- Removed 2 unused methods: UpdateComponentPricesFromPricelist, EnsureComponentPricesFromPricelists
+
+#### Key Changes
+- **Data Model:**
+  - LocalComponent: now stores only metadata (LotName, LotDescription, Category, Model)
+  - LocalConfiguration: added warehouse and competitor pricelist references
+
+- **Migrations:**
+  - drop_component_unused_fields - removes CurrentPrice, SyncedAt columns
+  - add_warehouse_competitor_pricelists - adds new pricelist fields
+
+- **Quote Calculation:**
+  - Updated to use pricelist_items instead of component.CurrentPrice
+  - Added PricelistID field to QuoteRequest
+  - Maintains offline-first behavior
+
+- **API:**
+  - Removed CurrentPrice from ComponentView
+  - Components API no longer returns pricing
+
+### 2. Fix: Load component prices via API (acf7c8a)
+**Type:** Bug Fix
+**Files Changed:** 1 file (web/templates/index.html), +66 insertions, -12 deletions
+
+#### Problem
+After v1.2.0 refactor, the configurator's autocomplete was filtering out all components because it checked for the removed `current_price` field on component objects.
+
+#### Solution
+Implemented on-demand price loading via API:
+- Added `ensurePricesLoaded()` function to fetch prices from `/api/quote/price-levels`
+- Added `componentPricesCache` to cache loaded prices in memory
+- Updated all 3 autocomplete modes (single, multi, section) to load prices when input is focused
+- Changed price validation from `c.current_price` to `hasComponentPrice(lot_name)`
+- Updated cart item creation to use cached API prices
+
+#### Impact
+- Components without prices are still filtered out (as required)
+- Price checks now use API data instead of removed database field
+- Frontend loads prices on-demand for better performance
+
+## Testing Notes
+- ✅ Configurator component substitution now works
+- ✅ Prices load correctly from pricelist
+- ✅ Offline mode still supported (prices cached after initial load)
+- ✅ Multi-pricelist support functional (estimate/warehouse/competitor)
+
+## Known Issues
+None
+
+## Migration Path
+No database migration needed from v1.2.0 - migrations were applied in v1.2.0 release.
+
+## Breaking Changes
+None for end users. Internal: `ComponentView` no longer includes `CurrentPrice` in API responses.

releases/memory/v1.2.2.md

@@ -0,0 +1,59 @@
+# Release v1.2.2 (2026-02-09)
+
+## Summary
+
+Fixed CSV export filename inconsistency where project names weren't being resolved correctly. Standardized export format across both manual exports and project configuration exports to use `YYYY-MM-DD (project_name) config_name BOM.csv`.
+
+## Commits
+
+- `8f596ce` fix: standardize CSV export filename format to use project name
+
+## Changes
+
+### CSV Export Filename Standardization
+
+**Problem:**
+- ExportCSV and ExportConfigCSV had inconsistent filename formats
+- Project names sometimes fell back to config names when not explicitly provided
+- Export timestamps didn't reflect actual price update time
+
+**Solution:**
+- Unified format: `YYYY-MM-DD (project_name) config_name BOM.csv`
+- Both export paths now use PriceUpdatedAt if available, otherwise CreatedAt
+- Project name resolved from ProjectUUID via ProjectService for both paths
+- Frontend passes project_uuid context when exporting
+
+**Technical Details:**
+
+Backend:
+- Added `ProjectUUID` field to `ExportRequest` struct in handlers/export.go
+- Updated ExportCSV to look up project name from ProjectUUID using ProjectService
+- Ensured ExportConfigCSV gets project name from config's ProjectUUID
+- Both use CreatedAt (for ExportCSV) or PriceUpdatedAt/CreatedAt (for ExportConfigCSV)
+
+Frontend:
+- Added `projectUUID` and `projectName` state variables in index.html
+- Load and store projectUUID when configuration is loaded
+- Pass `project_uuid` in JSON body for both export requests
+
+## Files Modified
+
+- `internal/handlers/export.go` - Project name resolution and ExportRequest update
+- `internal/handlers/export_test.go` - Updated mock initialization with projectService param
+- `cmd/qfs/main.go` - Pass projectService to ExportHandler constructor
+- `web/templates/index.html` - Add projectUUID tracking and export payload updates
+
+## Testing Notes
+
+✅ All existing tests updated and passing
+✅ Code builds without errors
+✅ Export filename now includes correct project name
+✅ Works for both form-based and project-based exports
+
+## Breaking Changes
+
+None - API response format unchanged, only filename generation updated.
+
+## Known Issues
+
+None identified.

releases/memory/v1.2.3.md

@@ -0,0 +1,95 @@
+# Release v1.2.3 (2026-02-10)
+
+## Summary
+
+Unified synchronization functionality with event-driven UI updates. Resolved user confusion about duplicate sync buttons by implementing a single sync source with automatic page refreshes.
+
+## Changes
+
+### Main Feature: Sync Event System
+
+- **Added `sync-completed` event** in base.html's `syncAction()` function
+  - Dispatched after successful `/api/sync/all` or `/api/sync/push`
+  - Includes endpoint and response data in event detail
+  - Enables pages to react automatically to sync completion
+
+### Configs Page (`configs.html`)
+
+- **Removed "Импорт с сервера" button** - duplicate functionality no longer needed
+- **Updated layout** - changed from 2-column grid to single button layout
+- **Removed `importConfigsFromServer()` function** - functionality now handled by navbar sync
+- **Added sync-completed event listener**:
+  - Automatically reloads configurations list after sync
+  - Resets pagination to first page
+  - New configurations appear immediately without manual refresh
+
+### Projects Page (`projects.html`)
+
+- **Wrapped initialization in DOMContentLoaded**:
+  - Moved `loadProjects()` and all event listeners inside handler
+  - Ensures DOM is fully loaded before accessing elements
+- **Added sync-completed event listener**:
+  - Automatically reloads projects list after sync
+  - New projects appear immediately without manual refresh
+
+### Pricelists Page (`pricelists.html`)
+
+- **Added sync-completed event listener** to existing DOMContentLoaded:
+  - Automatically reloads pricelists when sync completes
+  - Maintains existing permissions and modal functionality
+
+## Benefits
+
+### User Experience
+- ✅ Single "Синхронизация" button in navbar - no confusion about sync sources
+- ✅ Automatic list updates after sync - no need for manual F5 refresh
+- ✅ Consistent behavior across all pages (configs, projects, pricelists)
+- ✅ Better feedback: toast notification + automatic UI refresh
+
+### Architecture
+- ✅ Event-driven loose coupling between navbar and pages
+- ✅ Easy to extend to other pages (just add event listener)
+- ✅ No backend changes needed
+- ✅ Production-ready
+
+## Breaking Changes
+
+- **`/api/configs/import` endpoint** still works but UI button removed
+  - Users should use navbar "Синхронизация" button instead
+  - Backend API remains unchanged for backward compatibility
+
+## Files Modified
+
+1. `web/templates/base.html` - Added sync-completed event dispatch
+2. `web/templates/configs.html` - Event listener + removed duplicate UI
+3. `web/templates/projects.html` - DOMContentLoaded wrapper + event listener
+4. `web/templates/pricelists.html` - Event listener for auto-refresh
+
+**Stats:** 4 files changed, 59 insertions(+), 65 deletions(-)
+
+## Commits
+
+- `99fd80b` - feat: unify sync functionality with event-driven UI updates
+
+## Testing Checklist
+
+- [x] Configs page: New configurations appear after navbar sync
+- [x] Projects page: New projects appear after navbar sync
+- [x] Pricelists page: Pricelists refresh after navbar sync
+- [x] Both `/api/sync/all` and `/api/sync/push` trigger updates
+- [x] Toast notifications still show correctly
+- [x] Sync status indicator updates
+- [x] Error handling (423, network errors) still works
+- [x] Mode switching (Active/Archive) works correctly
+- [x] Backward compatibility maintained
+
+## Known Issues
+
+None - implementation is production-ready
+
+## Migration Notes
+
+No migration needed. Changes are frontend-only and backward compatible:
+- Old `/api/configs/import` endpoint still functional
+- No database schema changes
+- No configuration changes needed

releases/memory/v1.3.0.md

@@ -0,0 +1,68 @@
+# Release v1.3.0 (2026-02-11)
+
+## Summary
+
+Introduced article generation with pricelist categories, added local configuration storage, and expanded sync/export capabilities. Simplified article generator compression and loosened project update constraints.
+
+## Changes
+
+### Main Features: Articles + Pricelist Categories
+
+- **Article generation pipeline**
+  - New generator and tests under `internal/article/`
+  - Category support with test coverage
+- **Pricelist category integration**
+  - Handler and repository updates
+  - Sync backfill test for category propagation
+
+### Local Configuration Storage
+
+- **Local DB support**
+  - New localdb models, converters, snapshots, and migrations
+  - Local configuration service for cached configurations
+
+### Export & UI
+
+- **Export handler updates** for article data output
+- **Configs and index templates** adjusted for new article-related fields
+
+### Behavior Changes
+
+- **Cross-user project updates allowed**
+  - Removed restriction in project service
+- **Article compression refinement**
+  - Generator logic simplified to reduce complexity
+
+## Breaking Changes
+
+None identified. Existing APIs remain intact.
+
+## Files Modified
+
+1. `internal/article/*` - Article generator + categories + tests
+2. `internal/localdb/*` - Local DB models, migrations, snapshots
+3. `internal/handlers/export.go` - Export updates
+4. `internal/handlers/pricelist.go` - Category handling
+5. `internal/services/sync/service.go` - Category backfill logic
+6. `web/templates/configs.html` - Article field updates
+7. `web/templates/index.html` - Article field updates
+
+**Stats:** 33 files changed, 2059 insertions(+), 329 deletions(-)
+
+## Commits
+
+- `5edffe8` - Add article generation and pricelist categories
+- `e355903` - Allow cross-user project updates
+- `e58fd35` - Refine article compression and simplify generator
+
+## Testing Checklist
+
+- [ ] Tests not run (not requested)
+
+## Migration Notes
+
+- New migrations:
+  - `022_add_article_to_configurations.sql`
+  - `023_add_server_model_to_configurations.sql`
+  - `024_add_support_code_to_configurations.sql`
+  - Ensure migrations are applied before running v1.3.0

releases/memory/v1.3.2.md

@@ -0,0 +1,66 @@
+# Release v1.3.2 (2026-02-19)
+
+## Summary
+
+Release focuses on stability and data integrity for local configurations. Added configuration revision history, stronger recovery for broken local sync/version states, improved sync self-healing, and clearer API error logging.
+
+## Changes
+
+### Configuration Revisions
+
+- Added full local configuration revision flow with storage and UI support.
+- Introduced revisions page/template and backend plumbing for browsing revisions.
+- Prevented duplicate revisions when content did not actually change.
+
+### Local Data Integrity and Recovery
+
+- Added migration and snapshot support for local configuration version data.
+- Hardened updates for legacy/orphaned configuration rows:
+  - allow update when project UUID is unchanged even if referenced project is missing locally;
+  - recover gracefully when `current_version_id` is stale or version rows are missing.
+- Added regression tests for orphan-project and missing-current-version scenarios.
+
+### Sync Reliability
+
+- Added smart self-healing path for sync errors.
+- Fixed duplicate-project sync edge cases.
+
+### API and Logging
+
+- Improved HTTP error mapping for configuration updates (`404/403` instead of generic `500` in known cases).
+- Enhanced request logger to capture error responses (status, response body snippet, gin errors) for failed requests.
+
+### UI and Export
+
+- Updated project detail and index templates for revisions and related UX improvements.
+- Updated export pipeline and tests to align with revisions/project behavior changes.
+
+## Breaking Changes
+
+None identified.
+
+## Files Changed
+
+- 24 files changed, 2394 insertions(+), 482 deletions(-)
+- Main touched areas:
+  - `internal/services/local_configuration.go`
+  - `internal/services/local_configuration_versioning_test.go`
+  - `internal/localdb/{localdb.go,migrations.go,snapshots.go,local_migrations_test.go}`
+  - `internal/services/export.go`
+  - `cmd/qfs/main.go`
+  - `web/templates/{config_revisions.html,project_detail.html,index.html,base.html}`
+
+## Commits Included (`v1.3.1..v1.3.2`)
+
+- `b153afb` - Add smart self-healing for sync errors
+- `8508ee2` - Fix sync errors for duplicate projects and add modal scrolling
+- `2e973b6` - Add configuration revisions system and project variant deletion
+- `71f73e2` - chore: save current changes
+- `cbaeafa` - Deduplicate configuration revisions and update revisions UI
+- `075fc70` - Harden local config updates and error logging
+
+## Testing
+
+- [x] Targeted tests for local configuration update/version recovery:
+  - `go test ./internal/services -run 'TestUpdateNoAuth(AllowsOrphanProjectWhenUUIDUnchanged|RecoversWhenCurrentVersionMissing|KeepsProjectWhenProjectUUIDOmitted)$'`
+- [ ] Full regression suite not run in this release step.

releases/v1.2.1/RELEASE_NOTES.md

@@ -0,0 +1,89 @@
+# QuoteForge v1.2.1
+
+**Дата релиза:** 2026-02-09
+**Тег:** `v1.2.1`
+**GitHub:** https://git.mchus.pro/mchus/QuoteForge/releases/tag/v1.2.1
+
+## Резюме
+
+Быстрый патч-релиз, исправляющий регрессию в конфигураторе после рефактора v1.2.0. После удаления поля `CurrentPrice` из компонентов, autocomplete перестал показывать компоненты. Теперь используется на-demand загрузка цен через API.
+
+## Что исправлено
+
+### 🐛 Configurator Component Substitution (acf7c8a)
+- **Проблема:** После рефактора в v1.2.0, autocomplete фильтровал ВСЕ компоненты, потому что проверял удаленное поле `current_price`
+- **Решение:** Загрузка цен на-demand через `/api/quote/price-levels`
+  - Добавлен `componentPricesCache` для кэширования цен в памяти
+  - Функция `ensurePricesLoaded()` загружает цены при фокусе на поле поиска
+  - Все 3 режима autocomplete (single, multi, section) обновлены
+  - Компоненты без цен по-прежнему фильтруются (как требуется), но проверка использует API
+- **Затронутые файлы:** `web/templates/index.html` (+66 строк, -12 строк)
+
+## История v1.2.0 → v1.2.1
+
+Всего коммитов: **2**
+
+| Хеш | Автор | Сообщение |
+|-----|-------|-----------|
+| `acf7c8a` | Claude | fix: load component prices via API instead of removed current_price field |
+| `5984a57` | Claude | refactor: remove CurrentPrice from local_components and transition to pricelist-based pricing |
+
+## Тестирование
+
+✅ Configurator component substitution работает
+✅ Цены загружаются корректно из pricelist
+✅ Offline режим поддерживается (цены кэшируются после первой загрузки)
+✅ Multi-pricelist поддержка функциональна (estimate/warehouse/competitor)
+
+## Breaking Changes
+
+Нет критических изменений для конечных пользователей.
+
+⚠️ **Для разработчиков:** `ComponentView` API больше не возвращает `CurrentPrice`.
+
+## Миграция
+
+Не требуется миграция БД — все миграции были применены в v1.2.0.
+
+## Установка
+
+### macOS
+
+```bash
+# Скачать и распаковать
+tar xzf qfs-v1.2.1-darwin-arm64.tar.gz  # для Apple Silicon
+# или
+tar xzf qfs-v1.2.1-darwin-amd64.tar.gz  # для Intel Mac
+
+# Снять ограничение Gatekeeper (если требуется)
+xattr -d com.apple.quarantine ./qfs
+
+# Запустить
+./qfs
+```
+
+### Linux
+
+```bash
+tar xzf qfs-v1.2.1-linux-amd64.tar.gz
+./qfs
+```
+
+### Windows
+
+```bash
+# Распаковать qfs-v1.2.1-windows-amd64.zip
+# Запустить qfs.exe
+```
+
+## Известные проблемы
+
+Нет известных проблем на момент релиза.
+
+## Поддержка
+
+По вопросам обращайтесь: [@mchus](https://git.mchus.pro/mchus)
+
+---
+
+*Отправлено с ❤️ через Claude Code*

scripts/check-secrets.sh

@@ -0,0 +1,56 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+if ! git rev-parse --git-dir >/dev/null 2>&1; then
+  echo "Not inside a git repository."
+  exit 1
+fi
+
+if ! command -v rg >/dev/null 2>&1; then
+  echo "ripgrep (rg) is required for secret scanning."
+  exit 1
+fi
+
+staged_files=()
+while IFS= read -r file; do
+  staged_files+=("$file")
+done < <(git diff --cached --name-only --diff-filter=ACMRTUXB)
+
+if [ "${#staged_files[@]}" -eq 0 ]; then
+  exit 0
+fi
+
+secret_pattern='AKIA[0-9A-Z]{16}|ASIA[0-9A-Z]{16}|ghp_[A-Za-z0-9]{36}|github_pat_[A-Za-z0-9_]{20,}|xox[baprs]-[A-Za-z0-9-]{10,}|AIza[0-9A-Za-z_-]{35}|-----BEGIN (RSA|OPENSSH|EC|DSA|PRIVATE) KEY-----|(?i)(password|passwd|pwd|secret|token|api[_-]?key|jwt_secret)\s*[:=]\s*["'"'"'][^"'"'"'\s]{8,}["'"'"']'
+allow_pattern='CHANGE_ME|REDACTED|PLACEHOLDER|EXAMPLE|example|<[^>]+>'
+
+found=0
+
+for file in "${staged_files[@]}"; do
+  case "$file" in
+    dist/*|*.png|*.jpg|*.jpeg|*.gif|*.webp|*.pdf|*.zip|*.gz|*.exe|*.dll|*.so|*.dylib)
+      continue
+      ;;
+  esac
+
+  if ! content="$(git show ":$file" 2>/dev/null)"; then
+    continue
+  fi
+
+  hits="$(printf '%s' "$content" | rg -n --no-heading -e "$secret_pattern" || true)"
+  if [ -n "$hits" ]; then
+    filtered="$(printf '%s\n' "$hits" | rg -v -e "$allow_pattern" || true)"
+    if [ -n "$filtered" ]; then
+      echo "Potential secret found in staged file: $file"
+      printf '%s\n' "$filtered"
+      found=1
+    fi
+  fi
+done
+
+if [ "$found" -ne 0 ]; then
+  echo
+  echo "Commit blocked: remove or redact secrets before committing."
+  exit 1
+fi
+
+exit 0

web/templates/base.html

@@ -45,10 +45,10 @@
     <div id="toast" class="fixed bottom-4 right-4 z-50"></div>
 
     <!-- Sync Info Modal -->
-    <div id="sync-modal" class="fixed inset-0 bg-black bg-opacity-50 flex items-center justify-center z-50 hidden">
-        <div class="bg-white rounded-lg shadow-xl max-w-lg w-full mx-4">
-            <div class="p-6">
-                <div class="flex justify-between items-center mb-4">
+    <div id="sync-modal" class="fixed inset-0 bg-black bg-opacity-50 flex items-center justify-center z-50 hidden p-4">
+        <div class="bg-white rounded-lg shadow-xl max-w-lg w-full max-h-[90vh] flex flex-col">
+            <div class="p-6 border-b border-gray-200 flex-shrink-0">
+                <div class="flex justify-between items-center">
                     <h3 class="text-lg font-medium text-gray-900">Информация о синхронизации</h3>
                     <button onclick="closeSyncModal()" class="text-gray-400 hover:text-gray-500">
                         <svg class="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24">
@@ -56,8 +56,10 @@
                         </svg>
                     </button>
                 </div>
+            </div>
 
-                <div class="space-y-5">
+            <div class="overflow-y-auto flex-1">
+                <div class="p-6 space-y-5">
                     <!-- Section 1: DB Connection -->
                     <div>
                         <h4 class="font-medium text-gray-900 mb-2">Подключение к БД</h4>
@@ -123,9 +125,31 @@
                         <h4 class="font-medium text-gray-900 mb-2">Ошибки синхронизации</h4>
                         <div id="modal-errors-list" class="text-sm max-h-40 overflow-y-auto space-y-1"></div>
                     </div>
-                </div>
 
-                <div class="mt-6 flex justify-end">
+                    <!-- Section 5: Self-Healing (shown only if errors exist) -->
+                    <div id="modal-repair-section" class="hidden">
+                        <div class="bg-blue-50 border border-blue-200 rounded-lg p-4">
+                            <h4 class="font-medium text-blue-900 mb-2">Автоматическое исправление</h4>
+                            <p class="text-sm text-blue-700 mb-3">
+                                Система может исправить данные и очистить ошибки синхронизации:
+                            </p>
+                            <ul class="text-sm text-blue-700 mb-3 ml-4 list-disc space-y-1">
+                                <li>Проверит и исправит названия проектов</li>
+                                <li>Восстановит битые ссылки на проекты</li>
+                                <li>Очистит ошибки и даст pending changes еще шанс</li>
+                            </ul>
+                            <button id="repair-button" onclick="repairPendingChanges()"
+                                class="w-full px-4 py-2 bg-blue-600 text-white rounded-md hover:bg-blue-700 disabled:opacity-50 disabled:cursor-not-allowed">
+                                ИСПРАВИТЬ
+                            </button>
+                            <div id="repair-result" class="mt-2 text-sm hidden"></div>
+                        </div>
+                    </div>
+                </div>
+            </div>
+
+            <div class="p-6 border-t border-gray-200 flex-shrink-0">
+                <div class="flex justify-end">
                     <button onclick="closeSyncModal()" class="px-4 py-2 bg-gray-600 text-white rounded-md hover:bg-gray-700">
                         Закрыть
                     </button>
@@ -235,7 +259,8 @@
                 // Section 4: Errors
                 const errorsSection = document.getElementById('modal-errors-section');
                 const errorsList = document.getElementById('modal-errors-list');
-                if (data.errors && data.errors.length > 0) {
+                const hasErrors = data.errors && data.errors.length > 0;
+                if (hasErrors) {
                     errorsSection.classList.remove('hidden');
                     errorsList.innerHTML = data.errors.map(error => {
                         const time = new Date(error.timestamp).toLocaleString('ru-RU');
@@ -246,12 +271,65 @@
                 } else {
                     errorsSection.classList.add('hidden');
                 }
+
+                // Section 5: Repair (show only if errors exist)
+                const repairSection = document.getElementById('modal-repair-section');
+                const repairResult = document.getElementById('repair-result');
+                if (hasErrors) {
+                    repairSection.classList.remove('hidden');
+                    repairResult.classList.add('hidden');
+                    repairResult.innerHTML = '';
+                } else {
+                    repairSection.classList.add('hidden');
+                }
             } catch(e) {
                 console.error('Failed to load sync info:', e);
                 document.getElementById('modal-db-status').textContent = 'Ошибка загрузки';
             }
         }
 
+        // Repair pending changes
+        async function repairPendingChanges() {
+            const button = document.getElementById('repair-button');
+            const resultDiv = document.getElementById('repair-result');
+
+            button.disabled = true;
+            button.textContent = 'Исправление...';
+            resultDiv.classList.add('hidden');
+
+            try {
+                const resp = await fetch('/api/sync/repair', { method: 'POST' });
+                const data = await resp.json();
+
+                if (data.success) {
+                    resultDiv.classList.remove('hidden');
+                    if (data.repaired > 0) {
+                        resultDiv.className = 'mt-2 text-sm text-green-700 bg-green-50 rounded px-3 py-2';
+                        resultDiv.textContent = `✓ Исправлено: ${data.repaired}`;
+                        // Reload sync info after repair
+                        setTimeout(() => loadSyncInfo(), 1000);
+                    } else {
+                        resultDiv.className = 'mt-2 text-sm text-yellow-700 bg-yellow-50 rounded px-3 py-2';
+                        resultDiv.textContent = 'Нечего исправлять или проблемы остались';
+                        if (data.remaining_errors && data.remaining_errors.length > 0) {
+                            resultDiv.innerHTML += '<div class="mt-1 text-xs">' + data.remaining_errors.join('<br>') + '</div>';
+                        }
+                    }
+                } else {
+                    resultDiv.classList.remove('hidden');
+                    resultDiv.className = 'mt-2 text-sm text-red-700 bg-red-50 rounded px-3 py-2';
+                    resultDiv.textContent = 'Ошибка: ' + (data.error || 'неизвестная ошибка');
+                }
+            } catch (e) {
+                resultDiv.classList.remove('hidden');
+                resultDiv.className = 'mt-2 text-sm text-red-700 bg-red-50 rounded px-3 py-2';
+                resultDiv.textContent = 'Ошибка запроса: ' + e.message;
+            } finally {
+                button.disabled = false;
+                button.textContent = 'ИСПРАВИТЬ';
+            }
+        }
+
         // Event delegation for sync dropdown and actions
         document.addEventListener('DOMContentLoaded', function() {
             loadDBUser();
@@ -285,6 +363,14 @@
                     showToast(successMessage, 'success');
                     // Update last sync time - removed since dropdown is gone
                     // loadLastSyncTime();
+
+                    // Dispatch custom event for pages to react to sync completion
+                    window.dispatchEvent(new CustomEvent('sync-completed', {
+                        detail: {
+                            endpoint: endpoint,
+                            data: data
+                        }
+                    }));
                 } else if (resp.status === 423) {
                     const reason = data.reason_text || data.error || 'Синхронизация заблокирована.';
                     showToast(reason, 'error');

web/templates/config_revisions.html

@@ -0,0 +1,238 @@
+{{define "title"}}Ревизии - QuoteForge{{end}}
+
+{{define "content"}}
+<div class="space-y-4">
+    <div class="flex items-center gap-3">
+        <a href="/projects" class="text-gray-500 hover:text-gray-700" title="Все проекты">
+            <svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M3 9.75L12 3l9 6.75v9A2.25 2.25 0 0118.75 21h-13.5A2.25 2.25 0 013 18.75v-9z"></path>
+                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 21v-6h6v6"></path>
+            </svg>
+        </a>
+        <div class="text-2xl font-bold flex items-center gap-2" id="revisions-breadcrumbs">
+            <a id="breadcrumb-code-link" href="/projects" class="text-blue-700 hover:underline">
+                <span id="breadcrumb-code">—</span>
+            </a>
+            <span class="text-gray-400">-</span>
+            <a id="breadcrumb-variant-link" href="/projects" class="text-blue-700 hover:underline">
+                <span id="breadcrumb-variant">main</span>
+            </a>
+            <span class="text-gray-400">-</span>
+            <a id="breadcrumb-config-link" href="/configurator" class="text-blue-700 hover:underline">
+                <span id="breadcrumb-config">—</span>
+            </a>
+            <span class="text-gray-400">-</span>
+            <span class="text-gray-600">Ревизии</span>
+        </div>
+    </div>
+
+    <div id="revisions-list">
+        <div class="text-center py-8 text-gray-500">Загрузка...</div>
+    </div>
+</div>
+
+<script>
+const configUUID = '{{.ConfigUUID}}';
+let configData = null;
+let projectData = null;
+
+function escapeHtml(text) {
+    const div = document.createElement('div');
+    div.textContent = text || '';
+    return div.innerHTML;
+}
+
+function formatMoney(value) {
+    const num = Number(value);
+    if (!Number.isFinite(num)) return '—';
+    return '$\u00A0' + num.toLocaleString('ru-RU', {minimumFractionDigits: 0, maximumFractionDigits: 2});
+}
+
+function parseVersionSnapshot(version) {
+    try {
+        const raw = typeof version.data === 'string' ? version.data : '';
+        if (!raw) return { article: '—', price: null, serverCount: 1 };
+        const parsed = JSON.parse(raw);
+        return {
+            article: parsed.article || '—',
+            price: typeof parsed.total_price === 'number' ? parsed.total_price : null,
+            serverCount: Number.isFinite(Number(parsed.server_count)) && Number(parsed.server_count) > 0
+                ? Number(parsed.server_count)
+                : 1
+        };
+    } catch (_) {
+        return { article: '—', price: null, serverCount: 1 };
+    }
+}
+
+function truncateBreadcrumbSpecName(name) {
+    const maxLength = 16;
+    if (!name || name.length <= maxLength) return name;
+    return name.slice(0, maxLength - 1) + '…';
+}
+
+async function loadConfigInfo() {
+    try {
+        const resp = await fetch('/api/configs/' + configUUID);
+        if (!resp.ok) {
+            document.getElementById('revisions-list').innerHTML =
+                '<div class="bg-white rounded-lg shadow p-8 text-center text-red-600">Конфигурация не найдена</div>';
+            return false;
+        }
+        configData = await resp.json();
+
+        const fullConfigName = configData.name || 'Конфигурация';
+        const configBreadcrumbEl = document.getElementById('breadcrumb-config');
+        configBreadcrumbEl.textContent = truncateBreadcrumbSpecName(fullConfigName);
+        configBreadcrumbEl.title = fullConfigName;
+        document.getElementById('breadcrumb-config-link').href = '/configurator?uuid=' + configUUID;
+
+        if (configData.project_uuid) {
+            const projResp = await fetch('/api/projects/' + configData.project_uuid);
+            if (projResp.ok) {
+                projectData = await projResp.json();
+                document.getElementById('breadcrumb-code').textContent = projectData.code || '—';
+                const variant = (projectData.variant || '').trim();
+                document.getElementById('breadcrumb-variant').textContent = variant === '' ? 'main' : variant;
+                document.getElementById('breadcrumb-variant-link').href = '/projects/' + projectData.uuid;
+
+                // Find main variant for code link
+                const allResp = await fetch('/api/projects/all');
+                if (allResp.ok) {
+                    const allProjects = await allResp.json();
+                    const main = (Array.isArray(allProjects) ? allProjects : []).find(
+                        p => p.code === projectData.code && (p.variant || '').trim() === ''
+                    );
+                    if (main) {
+                        document.getElementById('breadcrumb-code-link').href = '/projects/' + main.uuid;
+                    }
+                }
+            }
+        }
+        return true;
+    } catch (e) {
+        document.getElementById('revisions-list').innerHTML =
+            '<div class="bg-white rounded-lg shadow p-8 text-center text-red-600">Ошибка загрузки</div>';
+        return false;
+    }
+}
+
+async function loadVersions() {
+    try {
+        const resp = await fetch('/api/configs/' + configUUID + '/versions?limit=200');
+        if (!resp.ok) {
+            document.getElementById('revisions-list').innerHTML =
+                '<div class="bg-white rounded-lg shadow p-8 text-center text-red-600">Ошибка загрузки ревизий</div>';
+            return;
+        }
+        const data = await resp.json();
+        const versions = data.versions || [];
+        renderVersions(versions);
+    } catch (e) {
+        document.getElementById('revisions-list').innerHTML =
+            '<div class="bg-white rounded-lg shadow p-8 text-center text-red-600">Ошибка загрузки</div>';
+    }
+}
+
+function renderVersions(versions) {
+    if (versions.length === 0) {
+        document.getElementById('revisions-list').innerHTML =
+            '<div class="bg-white rounded-lg shadow p-8 text-center text-gray-500">Нет ревизий</div>';
+        return;
+    }
+
+    let html = '<div class="bg-white rounded-lg shadow overflow-hidden"><table class="w-full">';
+    html += '<thead class="bg-gray-50"><tr>';
+    html += '<th class="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase">Версия</th>';
+    html += '<th class="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase">Дата</th>';
+    html += '<th class="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase">Автор</th>';
+    html += '<th class="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase">Артикул</th>';
+    html += '<th class="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase">Цена</th>';
+    html += '<th class="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase">Серверов</th>';
+    html += '<th class="px-4 py-3 text-right text-xs font-medium text-gray-500 uppercase">Действия</th>';
+    html += '</tr></thead><tbody class="divide-y">';
+
+    versions.forEach((v, idx) => {
+        const date = new Date(v.created_at).toLocaleString('ru-RU');
+        const author = v.created_by || '—';
+        const snapshot = parseVersionSnapshot(v);
+        const isCurrent = idx === 0;
+
+        html += '<tr class="hover:bg-gray-50' + (isCurrent ? ' bg-blue-50' : '') + '">';
+        html += '<td class="px-4 py-3 text-sm font-medium">';
+        html += 'v' + v.version_no;
+        if (isCurrent) html += ' <span class="text-xs text-blue-600 font-normal">(текущая)</span>';
+        html += '</td>';
+        html += '<td class="px-4 py-3 text-sm text-gray-500">' + escapeHtml(date) + '</td>';
+        html += '<td class="px-4 py-3 text-sm text-gray-500">' + escapeHtml(author) + '</td>';
+        html += '<td class="px-4 py-3 text-sm text-gray-500">' + escapeHtml(snapshot.article) + '</td>';
+        html += '<td class="px-4 py-3 text-sm text-gray-500">' + formatMoney(snapshot.price) + '</td>';
+        html += '<td class="px-4 py-3 text-sm text-gray-500">' + escapeHtml(String(snapshot.serverCount)) + '</td>';
+        html += '<td class="px-4 py-3 text-sm text-right space-x-2">';
+
+        // Open in configurator (readonly view)
+        html += '<a href="/configurator?uuid=' + configUUID + '&version=' + v.version_no + '" class="text-blue-600 hover:text-blue-800 inline-block" title="Открыть">';
+        html += '<svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M15 12a3 3 0 11-6 0 3 3 0 016 0z"></path><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M2.458 12C3.732 7.943 7.523 5 12 5c4.478 0 8.268 2.943 9.542 7-1.274 4.057-5.064 7-9.542 7-4.477 0-8.268-2.943-9.542-7z"></path></svg></a>';
+
+        // Clone from this version
+        html += '<button onclick="cloneFromVersion(' + v.version_no + ')" class="text-green-600 hover:text-green-800" title="Скопировать из этой ревизии">';
+        html += '<svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M8 16H6a2 2 0 01-2-2V6a2 2 0 012-2h8a2 2 0 012 2v2m-6 12h8a2 2 0 002-2v-8a2 2 0 00-2-2h-8a2 2 0 00-2 2v8a2 2 0 002 2z"></path></svg></button>';
+
+        // Rollback (not for current version)
+        if (!isCurrent) {
+            html += '<button onclick="rollbackToVersion(' + v.version_no + ')" class="text-orange-600 hover:text-orange-800" title="Восстановить эту ревизию">';
+            html += '<svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M3 10h10a8 8 0 018 8v2M3 10l6 6m-6-6l6-6"></path></svg></button>';
+        }
+
+        html += '</td></tr>';
+    });
+
+    html += '</tbody></table></div>';
+    document.getElementById('revisions-list').innerHTML = html;
+}
+
+async function cloneFromVersion(versionNo) {
+    const name = prompt('Название копии:', (configData ? configData.name : '') + ' (v' + versionNo + ')');
+    if (!name) return;
+    const resp = await fetch('/api/configs/' + configUUID + '/clone', {
+        method: 'POST',
+        headers: {'Content-Type': 'application/json'},
+        body: JSON.stringify({name: name, from_version: versionNo})
+    });
+    if (!resp.ok) {
+        const data = await resp.json().catch(() => ({}));
+        alert(data.error || 'Не удалось скопировать');
+        return;
+    }
+    const created = await resp.json();
+    showToast('Копия создана', 'success');
+    if (created && created.uuid) {
+        window.location.href = '/configurator?uuid=' + created.uuid;
+    }
+}
+
+async function rollbackToVersion(versionNo) {
+    if (!confirm('Восстановить конфигурацию до ревизии v' + versionNo + '?')) return;
+    const resp = await fetch('/api/configs/' + configUUID + '/rollback', {
+        method: 'POST',
+        headers: {'Content-Type': 'application/json'},
+        body: JSON.stringify({target_version: versionNo})
+    });
+    if (!resp.ok) {
+        const data = await resp.json().catch(() => ({}));
+        alert(data.error || 'Не удалось восстановить');
+        return;
+    }
+    showToast('Ревизия восстановлена', 'success');
+    loadVersions();
+}
+
+document.addEventListener('DOMContentLoaded', async function() {
+    const ok = await loadConfigInfo();
+    if (!ok) return;
+    await loadVersions();
+});
+</script>
+{{end}}
+
+{{template "base" .}}

web/templates/configs.html

@@ -4,13 +4,10 @@
 <div class="space-y-4">
     <h1 class="text-2xl font-bold">Мои конфигурации</h1>
 
-    <div id="action-buttons" class="mt-4 grid grid-cols-1 sm:grid-cols-2 gap-3">
-        <button onclick="openCreateModal()" class="py-3 bg-blue-600 text-white rounded-lg hover:bg-blue-700 font-medium">
+    <div id="action-buttons" class="mt-4">
+        <button onclick="openCreateModal()" class="w-full sm:w-auto py-3 px-6 bg-blue-600 text-white rounded-lg hover:bg-blue-700 font-medium">
             + Создать новую конфигурацию
         </button>
-        <button id="import-configs-btn" onclick="importConfigsFromServer()" class="py-3 bg-emerald-600 text-white rounded-lg hover:bg-emerald-700 font-medium">
-            Импорт с сервера
-        </button>
     </div>
 
     <div class="mt-4 inline-flex rounded-lg border border-gray-200 overflow-hidden">
@@ -57,15 +54,15 @@
 
         <div class="space-y-4">
             <div>
-                <label class="block text-sm font-medium text-gray-700 mb-1">Номер Opportunity</label>
-                <input type="text" id="opportunity-number" placeholder="Например: OPP-2024-001"
+                <label class="block text-sm font-medium text-gray-700 mb-1">Название конфигурации</label>
+                <input type="text" id="opportunity-number" placeholder="Например: Сервер для проекта X"
                        class="w-full px-3 py-2 border rounded focus:ring-2 focus:ring-blue-500 focus:border-blue-500">
             </div>
             <div>
-                <label class="block text-sm font-medium text-gray-700 mb-1">Проект</label>
+                <label class="block text-sm font-medium text-gray-700 mb-1">Код проекта</label>
                 <input id="create-project-input"
                        list="create-project-options"
-                       placeholder="Начните вводить название проекта"
+                       placeholder="Например: OPS-123 (Lenovo)"
                        class="w-full px-3 py-2 border rounded focus:ring-2 focus:ring-blue-500 focus:border-blue-500">
                 <datalist id="create-project-options"></datalist>
                 <div class="mt-2 flex justify-between items-center gap-3">
@@ -150,7 +147,7 @@
                 <label class="block text-sm font-medium text-gray-700 mb-1">Проект</label>
                 <input id="move-project-input"
                        list="move-project-options"
-                       placeholder="Начните вводить название проекта"
+                       placeholder="Например: OPS-123 (Lenovo)"
                        class="w-full px-3 py-2 border rounded focus:ring-2 focus:ring-blue-500 focus:border-blue-500">
                 <datalist id="move-project-options"></datalist>
                 <div class="mt-2 flex justify-between items-center gap-3">
@@ -177,7 +174,17 @@
 <div id="create-project-on-move-modal" class="fixed inset-0 bg-black bg-opacity-50 hidden items-center justify-center z-50">
     <div class="bg-white rounded-lg shadow-xl w-full max-w-md mx-4 p-6">
         <h2 class="text-xl font-semibold mb-3">Проект не найден</h2>
-        <p class="text-sm text-gray-600 mb-4">Проект "<span id="create-project-on-move-name" class="font-medium text-gray-900"></span>" не найден. <span id="create-project-on-move-description">Создать и привязать квоту?</span></p>
+        <p class="text-sm text-gray-600 mb-4">Проект с кодом "<span id="create-project-on-move-code" class="font-medium text-gray-900"></span>" не найден. <span id="create-project-on-move-description">Создать и привязать квоту?</span></p>
+        <div class="mb-4">
+            <label for="create-project-on-move-name" class="block text-sm font-medium text-gray-700 mb-1">Название проекта</label>
+            <input id="create-project-on-move-name" type="text" placeholder="Например: Инфраструктура для OPS-123"
+                   class="w-full px-3 py-2 border rounded focus:ring-2 focus:ring-blue-500 focus:border-blue-500">
+        </div>
+        <div class="mb-4">
+            <label for="create-project-on-move-variant" class="block text-sm font-medium text-gray-700 mb-1">Вариант (необязательно)</label>
+            <input id="create-project-on-move-variant" type="text" placeholder="Например: Lenovo"
+                   class="w-full px-3 py-2 border rounded focus:ring-2 focus:ring-blue-500 focus:border-blue-500">
+        </div>
         <div class="flex justify-end space-x-3">
             <button onclick="closeCreateProjectOnMoveModal()" class="px-4 py-2 text-gray-600 hover:text-gray-800">Отмена</button>
             <button id="create-project-on-move-confirm-btn" onclick="confirmCreateProjectOnMove()" class="px-4 py-2 bg-blue-600 text-white rounded hover:bg-blue-700">Создать и привязать</button>
@@ -194,10 +201,12 @@ let configStatusMode = 'active';
 let configsSearch = '';
 let projectsCache = [];
 let projectNameByUUID = {};
+let projectCodeByUUID = {};
+let projectVariantByUUID = {};
 let pendingMoveConfigUUID = '';
-let pendingMoveProjectName = '';
+let pendingMoveProjectCode = '';
 let pendingCreateConfigName = '';
-let pendingCreateProjectName = '';
+let pendingCreateProjectCode = '';
 
 function renderConfigs(configs) {
     const emptyText = configStatusMode === 'archived'
@@ -252,10 +261,23 @@ function renderConfigs(configs) {
                 html += '<td class="px-4 py-3 text-sm text-gray-700">' + escapeHtml(projectName) + '</td>';
             }
         }
+        const article = c.article ? escapeHtml(c.article) : '';
+        const serverModel = c.server_model ? escapeHtml(c.server_model) : '';
+        const subtitle = article || serverModel;
         if (configStatusMode === 'archived') {
-            html += '<td class="px-4 py-3 text-sm font-medium text-gray-700">' + escapeHtml(c.name) + '</td>';
+            html += '<td class="px-4 py-3 text-sm font-medium text-gray-700">';
+            html += '<div>' + escapeHtml(c.name) + '</div>';
+            if (subtitle) {
+                html += '<div class="text-xs text-gray-500">' + subtitle + '</div>';
+            }
+            html += '</td>';
         } else {
-            html += '<td class="px-4 py-3 text-sm font-medium"><a href="/configurator?uuid=' + c.uuid + '" class="text-blue-600 hover:text-blue-800 hover:underline">' + escapeHtml(c.name) + '</a></td>';
+            html += '<td class="px-4 py-3 text-sm font-medium">';
+            html += '<a href="/configurator?uuid=' + c.uuid + '" class="text-blue-600 hover:text-blue-800 hover:underline">' + escapeHtml(c.name) + '</a>';
+            if (subtitle) {
+                html += '<div class="text-xs text-gray-500">' + subtitle + '</div>';
+            }
+            html += '</td>';
         }
         html += '<td class="px-4 py-3 text-sm text-gray-500">' + escapeHtml(author) + '</td>';
         html += '<td class="px-4 py-3 text-sm text-gray-500">' + pricePerUnit + '</td>';
@@ -297,6 +319,30 @@ function renderConfigs(configs) {
     document.getElementById('configs-list').innerHTML = html;
 }
 
+function projectDisplayKey(project) {
+    const code = (project.code || '').trim();
+    const variant = (project.variant || '').trim();
+    if (!code) return '';
+    return variant ? (code + ' (' + variant + ')') : code;
+}
+
+function findProjectByInput(input) {
+    const trimmed = (input || '').trim().toLowerCase();
+    if (!trimmed) return null;
+
+    const directMatch = projectsCache.find(p => projectDisplayKey(p).toLowerCase() === trimmed);
+    if (directMatch) return directMatch;
+
+    const codeMatches = projectsCache.filter(p => (p.code || '').toLowerCase() === trimmed);
+    if (codeMatches.length === 1) {
+        return codeMatches[0];
+    }
+    if (codeMatches.length > 1) {
+        alert('У проекта несколько вариантов. Укажите вариант в формате "CODE (variant)".');
+    }
+    return null;
+}
+
 function escapeHtml(text) {
     const div = document.createElement('div');
     div.textContent = text;
@@ -434,17 +480,21 @@ async function createConfig() {
         return;
     }
 
-    const projectName = document.getElementById('create-project-input').value.trim();
+    const projectCode = document.getElementById('create-project-input').value.trim();
     let projectUUID = '';
 
-    if (projectName) {
-        const existingProject = projectsCache.find(p => p.is_active && p.name.toLowerCase() === projectName.toLowerCase());
-        if (existingProject) {
-            projectUUID = existingProject.uuid;
+    if (projectCode) {
+        const matchedProject = findProjectByInput(projectCode);
+        if (matchedProject) {
+            if (!matchedProject.is_active) {
+                alert('Проект с таким кодом находится в архиве. Восстановите его или выберите другой.');
+                return;
+            }
+            projectUUID = matchedProject.uuid;
         } else {
             pendingCreateConfigName = name;
-            pendingCreateProjectName = projectName;
-            openCreateProjectOnCreateModal(projectName);
+            pendingCreateProjectCode = projectCode;
+            openCreateProjectOnCreateModal(projectCode);
             return;
         }
     }
@@ -492,12 +542,14 @@ function openMoveProjectModal(uuid, configName, currentProjectUUID) {
     projectsCache.forEach(project => {
         if (!project.is_active) return;
         const option = document.createElement('option');
-        option.value = project.name;
+        option.value = projectDisplayKey(project);
+        option.label = project.name || '';
         options.appendChild(option);
     });
 
-    if (currentProjectUUID && projectNameByUUID[currentProjectUUID]) {
-        input.value = projectNameByUUID[currentProjectUUID];
+    if (currentProjectUUID && projectCodeByUUID[currentProjectUUID]) {
+        const variant = projectVariantByUUID[currentProjectUUID] || '';
+        input.value = variant ? (projectCodeByUUID[currentProjectUUID] + ' (' + variant + ')') : projectCodeByUUID[currentProjectUUID];
     } else {
         input.value = '';
     }
@@ -513,19 +565,23 @@ function closeMoveProjectModal() {
 
 async function confirmMoveProject() {
     const uuid = document.getElementById('move-project-uuid').value;
-    const projectName = document.getElementById('move-project-input').value.trim();
+    const projectCode = document.getElementById('move-project-input').value.trim();
 
     if (!uuid) return;
     let projectUUID = '';
 
-    if (projectName) {
-        const existingProject = projectsCache.find(p => p.is_active && p.name.toLowerCase() === projectName.toLowerCase());
-        if (existingProject) {
-            projectUUID = existingProject.uuid;
+    if (projectCode) {
+        const matchedProject = findProjectByInput(projectCode);
+        if (matchedProject) {
+            if (!matchedProject.is_active) {
+                alert('Проект с таким кодом находится в архиве. Восстановите его или выберите другой.');
+                return;
+            }
+            projectUUID = matchedProject.uuid;
         } else {
             pendingMoveConfigUUID = uuid;
-            pendingMoveProjectName = projectName;
-            openCreateProjectOnMoveModal(projectName);
+            pendingMoveProjectCode = projectCode;
+            openCreateProjectOnMoveModal(projectCode);
             return;
         }
     }
@@ -542,7 +598,9 @@ function clearCreateProjectInput() {
 }
 
 function openCreateProjectOnMoveModal(projectName) {
-    document.getElementById('create-project-on-move-name').textContent = projectName;
+    document.getElementById('create-project-on-move-code').textContent = projectName;
+    document.getElementById('create-project-on-move-name').value = projectName;
+    document.getElementById('create-project-on-move-variant').value = '';
     document.getElementById('create-project-on-move-description').textContent = 'Создать и привязать квоту?';
     document.getElementById('create-project-on-move-confirm-btn').textContent = 'Создать и привязать';
     document.getElementById('create-project-on-move-modal').classList.remove('hidden');
@@ -550,7 +608,9 @@ function openCreateProjectOnMoveModal(projectName) {
 }
 
 function openCreateProjectOnCreateModal(projectName) {
-    document.getElementById('create-project-on-move-name').textContent = projectName;
+    document.getElementById('create-project-on-move-code').textContent = projectName;
+    document.getElementById('create-project-on-move-name').value = projectName;
+    document.getElementById('create-project-on-move-variant').value = '';
     document.getElementById('create-project-on-move-description').textContent = 'Создать и использовать для новой конфигурации?';
     document.getElementById('create-project-on-move-confirm-btn').textContent = 'Создать и использовать';
     document.getElementById('create-project-on-move-modal').classList.remove('hidden');
@@ -561,22 +621,32 @@ function closeCreateProjectOnMoveModal() {
     document.getElementById('create-project-on-move-modal').classList.add('hidden');
     document.getElementById('create-project-on-move-modal').classList.remove('flex');
     pendingMoveConfigUUID = '';
-    pendingMoveProjectName = '';
+    pendingMoveProjectCode = '';
     pendingCreateConfigName = '';
-    pendingCreateProjectName = '';
+    pendingCreateProjectCode = '';
+    document.getElementById('create-project-on-move-name').value = '';
+    document.getElementById('create-project-on-move-variant').value = '';
 }
 
 async function confirmCreateProjectOnMove() {
-    if (pendingCreateConfigName && pendingCreateProjectName) {
+    const projectNameInput = document.getElementById('create-project-on-move-name');
+    const projectVariantInput = document.getElementById('create-project-on-move-variant');
+    const projectName = (projectNameInput.value || '').trim();
+    const projectVariant = (projectVariantInput.value || '').trim();
+    if (pendingCreateConfigName && pendingCreateProjectCode) {
         const configName = pendingCreateConfigName;
-        const projectName = pendingCreateProjectName;
+        const projectCode = pendingCreateProjectCode;
         try {
             const createResp = await fetch('/api/projects', {
                 method: 'POST',
                 headers: {'Content-Type': 'application/json'},
-                body: JSON.stringify({ name: projectName })
+                body: JSON.stringify({ name: projectName, code: projectCode, variant: projectVariant })
             });
             if (!createResp.ok) {
+                if (createResp.status === 409) {
+                    alert('Проект с таким кодом и вариантом уже существует');
+                    return;
+                }
                 const err = await createResp.json();
                 alert('Не удалось создать проект: ' + (err.error || 'ошибка'));
                 return;
@@ -584,14 +654,14 @@ async function confirmCreateProjectOnMove() {
 
             const newProject = await createResp.json();
             pendingCreateConfigName = '';
-            pendingCreateProjectName = '';
+            pendingCreateProjectCode = '';
             await loadProjectsForConfigUI();
             const created = await createConfigWithProject(configName, newProject.uuid);
             if (created) {
                 closeCreateProjectOnMoveModal();
             } else {
                 closeCreateProjectOnMoveModal();
-                document.getElementById('create-project-input').value = projectName;
+                document.getElementById('create-project-input').value = projectCode;
             }
         } catch (e) {
             alert('Ошибка создания проекта');
@@ -600,8 +670,8 @@ async function confirmCreateProjectOnMove() {
     }
 
     const configUUID = pendingMoveConfigUUID;
-    const projectName = pendingMoveProjectName;
-    if (!configUUID || !projectName) {
+    const projectCode = pendingMoveProjectCode;
+    if (!configUUID || !projectCode) {
         closeCreateProjectOnMoveModal();
         return;
     }
@@ -610,9 +680,13 @@ async function confirmCreateProjectOnMove() {
         const createResp = await fetch('/api/projects', {
             method: 'POST',
             headers: {'Content-Type': 'application/json'},
-            body: JSON.stringify({ name: projectName })
+            body: JSON.stringify({ name: projectName, code: projectCode, variant: projectVariant })
         });
         if (!createResp.ok) {
+            if (createResp.status === 409) {
+                alert('Проект с таким кодом и вариантом уже существует');
+                return;
+            }
             const err = await createResp.json();
             alert('Не удалось создать проект: ' + (err.error || 'ошибка'));
             return;
@@ -620,9 +694,9 @@ async function confirmCreateProjectOnMove() {
 
         const newProject = await createResp.json();
         pendingMoveConfigUUID = '';
-        pendingMoveProjectName = '';
+        pendingMoveProjectCode = '';
         await loadProjectsForConfigUI();
-        document.getElementById('move-project-input').value = projectName;
+        document.getElementById('move-project-input').value = projectCode;
         const moved = await moveConfigToProject(configUUID, newProject.uuid);
         if (moved) {
             closeCreateProjectOnMoveModal();
@@ -785,44 +859,19 @@ async function loadConfigs() {
     }
 }
 
-async function importConfigsFromServer() {
-    const button = document.getElementById('import-configs-btn');
-    const originalText = button.textContent;
-    button.disabled = true;
-    button.textContent = 'Импорт...';
-
-    try {
-        const resp = await fetch('/api/configs/import', { method: 'POST' });
-        const data = await resp.json();
-
-        if (!resp.ok) {
-            alert('Ошибка импорта: ' + (data.error || 'неизвестная ошибка'));
-            return;
-        }
-
-        alert(
-            'Импорт завершен:\n' +
-            '- Новых: ' + (data.imported || 0) + '\n' +
-            '- Обновлено: ' + (data.updated || 0) + '\n' +
-            '- Пропущено (локальные изменения): ' + (data.skipped || 0)
-        );
-
-        currentPage = 1;
-        await loadConfigs();
-    } catch (e) {
-        alert('Ошибка импорта с сервера');
-    } finally {
-        button.disabled = false;
-        button.textContent = originalText;
-    }
-}
-
 document.addEventListener('DOMContentLoaded', function() {
     applyStatusModeUI();
     loadProjectsForConfigUI().then(loadConfigs);
 
     // Load latest pricelist version for badge
     loadLatestPricelistVersion();
+
+    // Listen for sync completion events from navbar
+    window.addEventListener('sync-completed', function(e) {
+        // Reset pagination and reload configurations list
+        currentPage = 1;
+        loadConfigs();
+    });
 });
 
 document.getElementById('configs-search').addEventListener('input', function(e) {
@@ -834,14 +883,25 @@ document.getElementById('configs-search').addEventListener('input', function(e)
 async function loadProjectsForConfigUI() {
     projectsCache = [];
     projectNameByUUID = {};
+    projectCodeByUUID = {};
+    projectVariantByUUID = {};
     try {
-        const resp = await fetch('/api/projects?status=all');
+        // Use /api/projects/all to get all projects without pagination
+        const resp = await fetch('/api/projects/all');
         if (!resp.ok) return;
         const data = await resp.json();
-        projectsCache = (data.projects || []);
+        // data is now a simple array of {uuid, name} objects
+        const allProjects = Array.isArray(data) ? data : (data.projects || []);
 
-        projectsCache.forEach(project => {
-            projectNameByUUID[project.uuid] = project.name;
+        // For compatibility with rest of code, populate projectsCache but mainly use projectNameByUUID
+        projectsCache = allProjects;
+
+        allProjects.forEach(project => {
+            const variant = (project.variant || '').trim();
+            const baseName = project.name || '';
+            projectNameByUUID[project.uuid] = variant ? (baseName + ' (' + variant + ')') : baseName;
+            projectCodeByUUID[project.uuid] = project.code || '';
+            projectVariantByUUID[project.uuid] = project.variant || '';
         });
 
         const createOptions = document.getElementById('create-project-options');
@@ -850,7 +910,8 @@ async function loadProjectsForConfigUI() {
             projectsCache.forEach(project => {
                 if (!project.is_active) return;
                 const option = document.createElement('option');
-                option.value = project.name;
+                option.value = projectDisplayKey(project);
+                option.label = project.name || '';
                 createOptions.appendChild(option);
             });
         }

web/templates/index.html

@@ -5,14 +5,27 @@
     <!-- Header with config name and back button -->
     <div class="flex items-center justify-between">
         <div class="flex items-center space-x-4">
-            <a href="/configs" class="text-gray-500 hover:text-gray-700">
+            <a href="/projects" class="text-gray-500 hover:text-gray-700" title="Все проекты">
                 <svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
-                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M15 19l-7-7 7-7"></path>
+                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M3 9.75L12 3l9 6.75v9A2.25 2.25 0 0118.75 21h-13.5A2.25 2.25 0 013 18.75v-9z"></path>
+                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 21v-6h6v6"></path>
                 </svg>
             </a>
-            <h1 class="text-2xl font-bold">
-                <span id="config-name">Конфигуратор</span>
-            </h1>
+            <div class="text-2xl font-bold flex items-center gap-2" id="config-breadcrumbs">
+                <a id="breadcrumb-project-code-link" href="/projects" class="text-blue-700 hover:underline">
+                    <span id="breadcrumb-project-code">—</span>
+                </a>
+                <span class="text-gray-400">-</span>
+                <a id="breadcrumb-project-variant-link" href="/projects" class="text-blue-700 hover:underline">
+                    <span id="breadcrumb-project-variant">main</span>
+                </a>
+                <span class="text-gray-400">-</span>
+                <a id="breadcrumb-config-name-link" href="#" class="text-blue-700 hover:underline">
+                    <span id="breadcrumb-config-name">Конфигуратор</span>
+                </a>
+                <span class="text-gray-400">-</span>
+                <span id="breadcrumb-config-version">v1</span>
+            </div>
         </div>
         <div id="save-buttons" class="hidden flex items-center space-x-2">
             <button id="refresh-prices-btn" onclick="refreshPrices()" class="px-4 py-2 bg-blue-600 text-white rounded hover:bg-blue-700">
@@ -98,6 +111,7 @@
             </svg>
         </button>
         <div id="cart-summary-content" class="p-4">
+            <div id="article-display" class="text-sm text-gray-700 mb-3 font-mono"></div>
             <div id="cart-items" class="space-y-2 mb-4"></div>
             <div class="border-t pt-3 flex justify-between items-center">
                 <div class="text-lg font-bold">
@@ -326,17 +340,104 @@ let ASSIGNED_CATEGORIES = Object.values(TAB_CONFIG)
 // State
 let configUUID = '{{.ConfigUUID}}';
 let configName = '';
+let currentVersionNo = 1;
+let projectUUID = '';
+let projectName = '';
+let projectCode = '';
+let projectVariant = '';
+let projectIndexLoaded = false;
+let projectByUUID = {};
+let projectMainByCode = {};
+
+async function loadProjectIndex() {
+    if (projectIndexLoaded) return;
+    try {
+        const resp = await fetch('/api/projects/all');
+        if (!resp.ok) return;
+        const data = await resp.json();
+        const allProjects = Array.isArray(data) ? data : (data.projects || []);
+        projectByUUID = {};
+        projectMainByCode = {};
+        allProjects.forEach(p => {
+            projectByUUID[p.uuid] = p;
+            const code = (p.code || '').trim();
+            const variant = (p.variant || '').trim();
+            if (code && (variant === '' || variant === 'main')) {
+                if (!projectMainByCode[code]) {
+                    projectMainByCode[code] = p.uuid;
+                }
+            }
+        });
+        projectIndexLoaded = true;
+    } catch (e) {
+        // ignore
+    }
+}
+
+function updateConfigBreadcrumbs() {
+    const codeEl = document.getElementById('breadcrumb-project-code');
+    const variantEl = document.getElementById('breadcrumb-project-variant');
+    const configEl = document.getElementById('breadcrumb-config-name');
+    const versionEl = document.getElementById('breadcrumb-config-version');
+    const projectCodeLinkEl = document.getElementById('breadcrumb-project-code-link');
+    const projectVariantLinkEl = document.getElementById('breadcrumb-project-variant-link');
+
+    let code = 'Без проекта';
+    let variant = 'main';
+    if (projectUUID && projectByUUID[projectUUID]) {
+        code = (projectByUUID[projectUUID].code || '').trim() || 'Без проекта';
+        const rawVariant = (projectByUUID[projectUUID].variant || '').trim();
+        variant = rawVariant === '' ? 'main' : rawVariant;
+        if (projectCodeLinkEl) {
+            const mainUUID = projectMainByCode[code];
+            projectCodeLinkEl.href = mainUUID ? ('/projects/' + mainUUID) : ('/projects/' + projectUUID);
+        }
+        if (projectVariantLinkEl) {
+            projectVariantLinkEl.href = '/projects/' + projectUUID;
+        }
+    } else {
+        if (projectCodeLinkEl) projectCodeLinkEl.href = '/projects';
+        if (projectVariantLinkEl) projectVariantLinkEl.href = '/projects';
+    }
+    codeEl.textContent = code;
+    variantEl.textContent = variant;
+    const fullConfigName = configName || 'Конфигурация';
+    configEl.textContent = truncateBreadcrumbSpecName(fullConfigName);
+    configEl.title = fullConfigName;
+    versionEl.textContent = 'v' + (currentVersionNo || 1);
+    const configNameLinkEl = document.getElementById('breadcrumb-config-name-link');
+    if (configNameLinkEl && configUUID) {
+        configNameLinkEl.href = '/configs/' + configUUID + '/revisions';
+    }
+}
+
+function truncateBreadcrumbSpecName(name) {
+    const maxLength = 16;
+    if (!name || name.length <= maxLength) return name;
+    return name.slice(0, maxLength - 1) + '…';
+}
 let currentTab = 'base';
 let allComponents = [];
 let cart = [];
 let categoryOrderMap = {}; // Category code -> display_order mapping
 let autoSaveTimeout = null; // Timeout for debounced autosave
+let hasUnsavedChanges = false;
+let exitSaveStarted = false;
 let serverCount = 1; // Server count for the configuration
+let serverModelForQuote = '';
+let supportCode = '';
+let currentArticle = '';
+let articlePreviewTimeout = null;
 let selectedPricelistIds = {
     estimate: null,
     warehouse: null,
     competitor: null
 };
+let resolvedAutoPricelistIds = {
+    estimate: null,
+    warehouse: null,
+    competitor: null
+};
 let disablePriceRefresh = false;
 let onlyInStock = false;
 let activePricelistsBySource = {
@@ -351,6 +452,8 @@ let priceLevelsRefreshTimer = null;
 let warehouseStockLotsByPricelist = new Map();
 let warehouseStockLoadSeq = 0;
 let warehouseStockLoadsByPricelist = new Map();
+let componentPricesCache = {}; // { lot_name: price } - caches prices loaded via API
+let componentPricesCacheLoading = new Map(); // { category: Promise } - tracks ongoing price loads
 
 // Autocomplete state
 let autocompleteInput = null;
@@ -400,6 +503,22 @@ function formatDelta(abs, pct) {
     return sign + formatMoney(absValue) + ' (' + pctSign + Math.round(Math.abs(pct)) + '%)';
 }
 
+function getEffectivePricelistID(source) {
+    const explicit = selectedPricelistIds[source];
+    if (Number.isFinite(explicit) && explicit > 0) {
+        return Number(explicit);
+    }
+    const resolvedAuto = resolvedAutoPricelistIds[source];
+    if (Number.isFinite(resolvedAuto) && resolvedAuto > 0) {
+        return Number(resolvedAuto);
+    }
+    const fallback = activePricelistsBySource[source]?.[0]?.id;
+    if (Number.isFinite(fallback) && fallback > 0) {
+        return Number(fallback);
+    }
+    return null;
+}
+
 async function refreshPriceLevels(options = {}) {
     const force = options.force === true;
     const noCache = options.noCache === true;
@@ -445,12 +564,10 @@ async function refreshPriceLevels(options = {}) {
         if (data.resolved_pricelist_ids) {
             ['estimate', 'warehouse', 'competitor'].forEach(source => {
                 if (!selectedPricelistIds[source] && data.resolved_pricelist_ids[source]) {
-                    selectedPricelistIds[source] = data.resolved_pricelist_ids[source];
+                    resolvedAutoPricelistIds[source] = Number(data.resolved_pricelist_ids[source]);
                 }
             });
-            syncPriceSettingsControls();
             renderPricelistSettingsSummary();
-            persistLocalPriceSettings();
         }
     } catch(e) {
         console.error('Failed to refresh price levels', e);
@@ -483,11 +600,7 @@ function schedulePriceLevelsRefresh(options = {}) {
 }
 
 function currentWarehousePricelistID() {
-    const id = selectedPricelistIds.warehouse;
-    if (Number.isFinite(id) && id > 0) return Number(id);
-    const fallback = activePricelistsBySource.warehouse?.[0]?.id;
-    if (Number.isFinite(fallback) && fallback > 0) return Number(fallback);
-    return null;
+    return getEffectivePricelistID('warehouse');
 }
 
 async function loadWarehouseInStockLots() {
@@ -607,7 +720,10 @@ document.addEventListener('DOMContentLoaded', async function() {
 
         const config = await resp.json();
         configName = config.name;
-        document.getElementById('config-name').textContent = config.name;
+        currentVersionNo = config.current_version_no || 1;
+        projectUUID = config.project_uuid || '';
+        await loadProjectIndex();
+        updateConfigBreadcrumbs();
         document.getElementById('save-buttons').classList.remove('hidden');
 
         // Set server count from config
@@ -629,6 +745,9 @@ document.addEventListener('DOMContentLoaded', async function() {
                 category: item.category || getCategoryFromLotName(item.lot_name)
             }));
         }
+        serverModelForQuote = config.server_model || '';
+        supportCode = config.support_code || '';
+        currentArticle = config.article || '';
 
         // Restore custom price if saved
         if (config.custom_price) {
@@ -719,9 +838,7 @@ async function loadActivePricelists(force = false) {
                 if (existing && activePricelistsBySource[source].some(pl => Number(pl.id) === Number(existing))) {
                     return;
                 }
-                selectedPricelistIds[source] = activePricelistsBySource[source].length > 0
-                    ? Number(activePricelistsBySource[source][0].id)
-                    : null;
+                selectedPricelistIds[source] = null;
             } catch (e) {
                 activePricelistsBySource[source] = [];
                 selectedPricelistIds[source] = null;
@@ -857,6 +974,15 @@ function applyPriceSettings() {
     selectedPricelistIds.estimate = Number.isFinite(estimateVal) && estimateVal > 0 ? estimateVal : null;
     selectedPricelistIds.warehouse = Number.isFinite(warehouseVal) && warehouseVal > 0 ? warehouseVal : null;
     selectedPricelistIds.competitor = Number.isFinite(competitorVal) && competitorVal > 0 ? competitorVal : null;
+    if (selectedPricelistIds.estimate) {
+        resolvedAutoPricelistIds.estimate = null;
+    }
+    if (selectedPricelistIds.warehouse) {
+        resolvedAutoPricelistIds.warehouse = null;
+    }
+    if (selectedPricelistIds.competitor) {
+        resolvedAutoPricelistIds.competitor = null;
+    }
     disablePriceRefresh = disableVal;
     onlyInStock = inStockVal;
 
@@ -943,7 +1069,32 @@ function renderTab() {
 }
 
 function renderSingleSelectTab(categories) {
-    let html = `
+    let html = '';
+    if (currentTab === 'base') {
+        html += `
+        <div class="mb-1 grid grid-cols-1 md:grid-cols-[1fr,16rem] gap-3 items-start">
+            <label for="server-model-input" class="block text-sm font-medium text-gray-700">Модель сервера для КП:</label>
+            <label for="support-code-select" class="block text-sm font-medium text-gray-700">Уровень техподдержки:</label>
+        </div>
+        <div class="mb-3 grid grid-cols-1 md:grid-cols-[1fr,16rem] gap-3 items-start">
+            <input type="text"
+                   id="server-model-input"
+                   value="${escapeHtml(serverModelForQuote)}"
+                   class="w-full px-3 py-2 border rounded focus:ring-2 focus:ring-blue-500"
+                   oninput="updateServerModelForQuote(this.value)">
+            <select id="support-code-select"
+                    class="w-full px-3 py-2 border rounded focus:ring-2 focus:ring-blue-500"
+                    onchange="updateSupportCode(this.value)">
+                <option value="">—</option>
+                <option value="1yW" ${supportCode === '1yW' ? 'selected' : ''}>1yW</option>
+                <option value="1yB" ${supportCode === '1yB' ? 'selected' : ''}>1yB</option>
+                <option value="1yS" ${supportCode === '1yS' ? 'selected' : ''}>1yS</option>
+                <option value="1yP" ${supportCode === '1yP' ? 'selected' : ''}>1yP</option>
+            </select>
+        </div>
+        `;
+    }
+    html += `
         <table class="w-full">
             <thead class="bg-gray-50">
                 <tr>
@@ -1201,12 +1352,54 @@ function renderMultiSelectTabWithSections(sections) {
     document.getElementById('tab-content').innerHTML = html;
 }
 
+// Load prices for components in a category/tab via API
+async function ensurePricesLoaded(components) {
+    if (!components || components.length === 0) return;
+
+    // Filter out components that already have prices cached
+    const toLoad = components.filter(c => !(c.lot_name in componentPricesCache));
+    if (toLoad.length === 0) return;
+
+    try {
+        // Use quote/price-levels API to get prices for these components
+        const resp = await fetch('/api/quote/price-levels', {
+            method: 'POST',
+            headers: { 'Content-Type': 'application/json' },
+            body: JSON.stringify({
+                items: toLoad.map(c => ({ lot_name: c.lot_name, quantity: 1 })),
+                pricelist_ids: Object.fromEntries(
+                    Object.entries(selectedPricelistIds)
+                        .filter(([, id]) => typeof id === 'number' && id > 0)
+                )
+            })
+        });
+
+        if (resp.ok) {
+            const data = await resp.json();
+            if (data.items) {
+                data.items.forEach(item => {
+                    // Cache the estimate price (or 0 if not found)
+                    componentPricesCache[item.lot_name] = item.estimate_price || 0;
+                });
+            }
+        }
+    } catch (e) {
+        console.error('Failed to load component prices', e);
+    }
+}
+
+function hasComponentPrice(lotName) {
+    return lotName in componentPricesCache && componentPricesCache[lotName] > 0;
+}
+
 // Autocomplete for single select (Base tab)
-function showAutocomplete(category, input) {
+async function showAutocomplete(category, input) {
     autocompleteInput = input;
     autocompleteCategory = category;
     autocompleteMode = 'single';
     autocompleteIndex = -1;
+    const components = getComponentsForCategory(category);
+    await ensurePricesLoaded(components);
     filterAutocomplete(category, input.value);
 }
 
@@ -1215,7 +1408,7 @@ function filterAutocomplete(category, search) {
     const searchLower = search.toLowerCase();
 
     autocompleteFiltered = components.filter(c => {
-        if (!c.current_price) return false;
+        if (!hasComponentPrice(c.lot_name)) return false;
         if (!isComponentAllowedByStockFilter(c)) return false;
         const text = (c.lot_name + ' ' + (c.description || '')).toLowerCase();
         return text.includes(searchLower);
@@ -1298,12 +1491,13 @@ function selectAutocompleteItem(index) {
 
     const qtyInput = document.getElementById('qty-' + autocompleteCategory);
     const qty = parseInt(qtyInput?.value) || 1;
+    const price = componentPricesCache[comp.lot_name] || 0;
 
     cart.push({
         lot_name: comp.lot_name,
         quantity: qty,
-        unit_price: comp.current_price,
-        estimate_price: comp.current_price,
+        unit_price: price,
+        estimate_price: price,
         warehouse_price: null,
         competitor_price: null,
         delta_wh_estimate_abs: null,
@@ -1333,11 +1527,13 @@ function hideAutocomplete() {
 }
 
 // Autocomplete for multi select tabs
-function showAutocompleteMulti(input) {
+async function showAutocompleteMulti(input) {
     autocompleteInput = input;
     autocompleteCategory = null;
     autocompleteMode = 'multi';
     autocompleteIndex = -1;
+    const components = getComponentsForTab(currentTab);
+    await ensurePricesLoaded(components);
     filterAutocompleteMulti(input.value);
 }
 
@@ -1349,7 +1545,7 @@ function filterAutocompleteMulti(search) {
     const addedLots = new Set(cart.map(i => i.lot_name));
 
     autocompleteFiltered = components.filter(c => {
-        if (!c.current_price) return false;
+        if (!hasComponentPrice(c.lot_name)) return false;
         if (addedLots.has(c.lot_name)) return false;
         if (!isComponentAllowedByStockFilter(c)) return false;
         const text = (c.lot_name + ' ' + (c.description || '')).toLowerCase();
@@ -1390,12 +1586,13 @@ function selectAutocompleteItemMulti(index) {
 
     const qtyInput = document.getElementById('new-qty');
     const qty = parseInt(qtyInput?.value) || 1;
+    const price = componentPricesCache[comp.lot_name] || 0;
 
     cart.push({
         lot_name: comp.lot_name,
         quantity: qty,
-        unit_price: comp.current_price,
-        estimate_price: comp.current_price,
+        unit_price: price,
+        estimate_price: price,
         warehouse_price: null,
         competitor_price: null,
         delta_wh_estimate_abs: null,
@@ -1417,11 +1614,16 @@ function selectAutocompleteItemMulti(index) {
 }
 
 // Autocomplete for sectioned tabs (like storage with RAID and Disks sections)
-function showAutocompleteSection(sectionId, input) {
+async function showAutocompleteSection(sectionId, input) {
     autocompleteInput = input;
     autocompleteCategory = sectionId; // Store section ID
     autocompleteMode = 'section';
     autocompleteIndex = -1;
+
+    // Load prices for tab components
+    const components = getComponentsForTab(currentTab);
+    await ensurePricesLoaded(components);
+
     filterAutocompleteSection(sectionId, input.value, input);
 }
 
@@ -1448,7 +1650,7 @@ function filterAutocompleteSection(sectionId, search, inputElement) {
     const addedLots = new Set(cart.map(i => i.lot_name));
 
     autocompleteFiltered = sectionComponents.filter(c => {
-        if (!c.current_price) return false;
+        if (!hasComponentPrice(c.lot_name)) return false;
         if (addedLots.has(c.lot_name)) return false;
         if (!isComponentAllowedByStockFilter(c)) return false;
         const text = (c.lot_name + ' ' + (c.description || '')).toLowerCase();
@@ -1489,12 +1691,13 @@ function selectAutocompleteItemSection(index, sectionId) {
 
     const qtyInput = document.getElementById('new-qty-' + sectionId);
     const qty = parseInt(qtyInput?.value) || 1;
+    const price = componentPricesCache[comp.lot_name] || 0;
 
     cart.push({
         lot_name: comp.lot_name,
         quantity: qty,
-        unit_price: comp.current_price,
-        estimate_price: comp.current_price,
+        unit_price: price,
+        estimate_price: price,
         warehouse_price: null,
         competitor_price: null,
         delta_wh_estimate_abs: null,
@@ -1579,6 +1782,8 @@ function updateCartUI() {
     calculateCustomPrice();
     renderSalePriceTable();
 
+    scheduleArticlePreview();
+
     if (cart.length === 0) {
         document.getElementById('cart-items').innerHTML =
             '<div class="text-gray-500 text-center py-2">Конфигурация пуста</div>';
@@ -1654,13 +1859,192 @@ function escapeHtml(text) {
     return div.innerHTML;
 }
 
+function updateServerModelForQuote(value) {
+    serverModelForQuote = value || '';
+    scheduleArticlePreview();
+}
+
+function updateSupportCode(value) {
+    supportCode = value || '';
+    scheduleArticlePreview();
+}
+
+function scheduleArticlePreview() {
+    if (articlePreviewTimeout) {
+        clearTimeout(articlePreviewTimeout);
+    }
+    articlePreviewTimeout = setTimeout(() => {
+        previewArticle();
+    }, 250);
+}
+
+async function previewArticle() {
+    const el = document.getElementById('article-display');
+    if (!el) return;
+
+    const model = serverModelForQuote.trim();
+    const estimatePricelistID = getEffectivePricelistID('estimate');
+    if (!model || !estimatePricelistID || cart.length === 0) {
+        currentArticle = '';
+        el.textContent = 'Артикул: —';
+        return;
+    }
+
+    try {
+        const resp = await fetch('/api/configs/preview-article', {
+            method: 'POST',
+            headers: {'Content-Type': 'application/json'},
+            body: JSON.stringify({
+                server_model: serverModelForQuote,
+                support_code: supportCode,
+                pricelist_id: estimatePricelistID,
+                items: cart.map(item => ({
+                    lot_name: item.lot_name,
+                    quantity: item.quantity,
+                    unit_price: item.unit_price || 0
+                }))
+            })
+        });
+        if (!resp.ok) {
+            currentArticle = '';
+            el.textContent = 'Артикул: —';
+            return;
+        }
+        const data = await resp.json();
+        currentArticle = data.article || '';
+        el.textContent = currentArticle ? ('Артикул: ' + currentArticle) : 'Артикул: —';
+    } catch(e) {
+        currentArticle = '';
+        el.textContent = 'Артикул: —';
+    }
+}
+
+function getCurrentArticle() {
+    return currentArticle || '';
+}
+
+function getAutosaveStorageKey() {
+    return `qf_config_autosave_${configUUID || 'default'}`;
+}
+
+function buildSavePayload() {
+    const customPriceInput = document.getElementById('custom-price-input');
+    const customPriceValue = parseFloat(customPriceInput.value);
+    const customPrice = customPriceValue > 0 ? customPriceValue : null;
+
+    return {
+        name: configName,
+        items: cart,
+        custom_price: customPrice,
+        notes: '',
+        server_count: serverCount,
+        server_model: serverModelForQuote,
+        support_code: supportCode,
+        article: getCurrentArticle(),
+        pricelist_id: selectedPricelistIds.estimate,
+        only_in_stock: onlyInStock
+    };
+}
+
+function persistAutosaveDraft() {
+    if (!configUUID) return;
+    try {
+        sessionStorage.setItem(getAutosaveStorageKey(), JSON.stringify({
+            payload: buildSavePayload(),
+            saved_at: Date.now()
+        }));
+    } catch (_) {
+        // ignore storage failures
+    }
+}
+
+function clearAutosaveDraft() {
+    try {
+        sessionStorage.removeItem(getAutosaveStorageKey());
+    } catch (_) {
+        // ignore storage failures
+    }
+}
+
+function restoreAutosaveDraftIfAny() {
+    if (!configUUID) return;
+    let raw = null;
+    try {
+        raw = sessionStorage.getItem(getAutosaveStorageKey());
+    } catch (_) {
+        raw = null;
+    }
+    if (!raw) return;
+
+    try {
+        const parsed = JSON.parse(raw);
+        const payload = parsed && parsed.payload ? parsed.payload : null;
+        if (!payload) return;
+
+        if (Array.isArray(payload.items)) {
+            cart = payload.items.map(item => ({
+                lot_name: item.lot_name,
+                quantity: item.quantity,
+                unit_price: item.unit_price,
+                estimate_price: item.unit_price,
+                warehouse_price: null,
+                competitor_price: null,
+                description: item.description || '',
+                category: item.category || getCategoryFromLotName(item.lot_name)
+            }));
+        }
+        if (typeof payload.server_count === 'number' && payload.server_count > 0) {
+            serverCount = payload.server_count;
+            const serverCountInput = document.getElementById('server-count');
+            if (serverCountInput) serverCountInput.value = serverCount;
+            const totalServerCount = document.getElementById('total-server-count');
+            if (totalServerCount) totalServerCount.textContent = serverCount;
+        }
+        serverModelForQuote = payload.server_model || serverModelForQuote;
+        supportCode = payload.support_code || supportCode;
+        currentArticle = payload.article || currentArticle;
+        selectedPricelistIds.estimate = payload.pricelist_id || selectedPricelistIds.estimate;
+        onlyInStock = Boolean(payload.only_in_stock);
+
+        const customPriceInput = document.getElementById('custom-price-input');
+        if (customPriceInput) {
+            if (typeof payload.custom_price === 'number' && payload.custom_price > 0) {
+                customPriceInput.value = payload.custom_price.toFixed(2);
+            } else {
+                customPriceInput.value = '';
+            }
+        }
+        hasUnsavedChanges = true;
+    } catch (_) {
+        // ignore invalid draft
+    }
+}
+
+function saveConfigOnExit() {
+    if (!configUUID || !hasUnsavedChanges || exitSaveStarted) return;
+    exitSaveStarted = true;
+    try {
+        fetch('/api/configs/' + configUUID, {
+            method: 'PUT',
+            headers: {
+                'Content-Type': 'application/json'
+            },
+            body: JSON.stringify(buildSavePayload()),
+            keepalive: true
+        });
+    } catch (_) {
+        // best effort save on page exit
+    }
+}
+
 function triggerAutoSave() {
-    // Debounce autosave - wait 1 second after last change
+    // Autosave keeps local draft only; server revision is created on Save/Exit.
+    hasUnsavedChanges = true;
     if (autoSaveTimeout) {
         clearTimeout(autoSaveTimeout);
     }
     autoSaveTimeout = setTimeout(() => {
-        saveConfig(false); // false = don't show notification
+        persistAutosaveDraft();
     }, 1000);
 }
 
@@ -1674,29 +2058,13 @@ async function saveConfig(showNotification = true) {
 
     await refreshPriceLevels({ force: true, noCache: true });
 
-    // Get custom price if set
-    const customPriceInput = document.getElementById('custom-price-input');
-    const customPriceValue = parseFloat(customPriceInput.value);
-    const customPrice = customPriceValue > 0 ? customPriceValue : null;
-
-    // Get server count
-    const serverCountValue = serverCount;
-
     try {
         const resp = await fetch('/api/configs/' + configUUID, {
             method: 'PUT',
             headers: {
                 'Content-Type': 'application/json'
             },
-            body: JSON.stringify({
-                name: configName,
-                items: cart,
-                custom_price: customPrice,
-                notes: '',
-                server_count: serverCountValue,
-                pricelist_id: selectedPricelistIds.estimate,
-                only_in_stock: onlyInStock
-            })
+            body: JSON.stringify(buildSavePayload())
         });
 
         if (!resp.ok) {
@@ -1706,6 +2074,16 @@ async function saveConfig(showNotification = true) {
             return;
         }
 
+        const saved = await resp.json();
+        if (saved && saved.current_version_no) {
+            currentVersionNo = saved.current_version_no;
+            const versionEl = document.getElementById('breadcrumb-config-version');
+            if (versionEl) versionEl.textContent = 'v' + currentVersionNo;
+        }
+        hasUnsavedChanges = false;
+        clearAutosaveDraft();
+        exitSaveStarted = false;
+
         if (showNotification) {
             showToast('Сохранено', 'success');
         }
@@ -1716,6 +2094,14 @@ async function saveConfig(showNotification = true) {
     }
 }
 
+// Helper function to extract filename from Content-Disposition header
+function getFilenameFromResponse(resp) {
+    const contentDisposition = resp.headers.get('content-disposition');
+    if (!contentDisposition) return null;
+    const matches = contentDisposition.match(/filename="?([^"]+)"?/);
+    return matches && matches[1] ? matches[1] : null;
+}
+
 async function exportCSV() {
     if (cart.length === 0) return;
 
@@ -1730,17 +2116,19 @@ async function exportCSV() {
             ...item,
             unit_price: getDisplayPrice(item),
         }));
+        const article = getCurrentArticle();
         const resp = await fetch('/api/export/csv', {
             method: 'POST',
             headers: {'Content-Type': 'application/json'},
-            body: JSON.stringify({items: exportItems, name: configName})
+            body: JSON.stringify({items: exportItems, name: configName, project_uuid: projectUUID, article: article, server_count: serverCount, pricelist_id: selectedPricelistIds.estimate || null})
         });
 
         const blob = await resp.blob();
         const url = window.URL.createObjectURL(blob);
         const a = document.createElement('a');
         a.href = url;
-        a.download = (configName || 'config') + '.csv';
+        const articleForName = article || 'BOM';
+        a.download = getFilenameFromResponse(resp) || ((configName || 'config') + ' ' + articleForName + '.csv');
         a.click();
         window.URL.revokeObjectURL(url);
     } catch(e) {
@@ -1986,14 +2374,14 @@ async function exportCSVWithCustomPrice() {
         const resp = await fetch('/api/export/csv', {
             method: 'POST',
             headers: {'Content-Type': 'application/json'},
-            body: JSON.stringify({items: adjustedCart, name: configName})
+            body: JSON.stringify({items: adjustedCart, name: configName, project_uuid: projectUUID})
         });
 
         const blob = await resp.blob();
         const url = window.URL.createObjectURL(blob);
         const a = document.createElement('a');
         a.href = url;
-        a.download = (configName || 'config') + '.csv';
+        a.download = getFilenameFromResponse(resp) || (configName || 'config') + '.csv';
         a.click();
         window.URL.revokeObjectURL(url);
     } catch(e) {
@@ -2043,13 +2431,19 @@ async function refreshPrices() {
             updatePriceUpdateDate(config.price_updated_at);
         }
         if (config.pricelist_id) {
-            selectedPricelistIds.estimate = config.pricelist_id;
+            if (selectedPricelistIds.estimate) {
+                selectedPricelistIds.estimate = config.pricelist_id;
+            } else {
+                resolvedAutoPricelistIds.estimate = Number(config.pricelist_id);
+            }
             if (!activePricelistsBySource.estimate.some(opt => Number(opt.id) === Number(config.pricelist_id))) {
                 await loadActivePricelists();
             }
             syncPriceSettingsControls();
             renderPricelistSettingsSummary();
-            persistLocalPriceSettings();
+            if (selectedPricelistIds.estimate) {
+                persistLocalPriceSettings();
+            }
         }
 
         // Re-render UI

web/templates/pricelist_detail.html

@@ -3,9 +3,10 @@
 {{define "content"}}
 <div class="space-y-6">
     <div class="flex items-center space-x-4">
-        <a href="/pricelists" class="text-gray-500 hover:text-gray-700">
+        <a href="/projects" class="text-gray-500 hover:text-gray-700" title="Все проекты">
             <svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
-                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M15 19l-7-7 7-7"></path>
+                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M3 9.75L12 3l9 6.75v9A2.25 2.25 0 0118.75 21h-13.5A2.25 2.25 0 013 18.75v-9z"></path>
+                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 21v-6h6v6"></path>
             </svg>
         </a>
         <h1 id="page-title" class="text-2xl font-bold text-gray-900">Загрузка...</h1>

web/templates/pricelists.html

@@ -235,6 +235,12 @@
     document.addEventListener('DOMContentLoaded', function() {
         checkPricelistWritePermission();
         loadPricelists(1);
+
+        // Listen for sync completion events from navbar
+        window.addEventListener('sync-completed', function(e) {
+            // Reload pricelists on sync completion
+            loadPricelists(1);
+        });
     });
 </script>
 {{end}}

web/templates/project_detail.html

@@ -4,22 +4,51 @@
 <div class="space-y-4">
     <div class="flex items-center justify-between gap-3">
         <div class="flex items-center gap-3">
-            <a href="/projects" class="text-gray-500 hover:text-gray-700" title="Назад к проектам">
+            <a href="/projects" class="text-gray-500 hover:text-gray-700" title="Все проекты">
                 <svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
-                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M15 19l-7-7 7-7"></path>
+                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M3 9.75L12 3l9 6.75v9A2.25 2.25 0 0118.75 21h-13.5A2.25 2.25 0 013 18.75v-9z"></path>
+                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 21v-6h6v6"></path>
                 </svg>
             </a>
-            <h1 class="text-2xl font-bold" id="project-title">Проект</h1>
+            <div class="text-2xl font-bold flex items-center gap-2">
+                <a id="project-code-link" href="/projects" class="text-blue-700 hover:underline">
+                    <span id="project-code">—</span>
+                </a>
+                <span class="text-gray-400">-</span>
+                <div class="relative">
+                    <button id="project-variant-button" type="button" class="inline-flex items-center gap-2 text-base font-medium px-3 py-1.5 rounded-lg bg-gray-100 hover:bg-gray-200 border border-gray-200">
+                        <span id="project-variant-label">main</span>
+                        <svg class="w-4 h-4 text-gray-500" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M19 9l-7 7-7-7"></path>
+                        </svg>
+                    </button>
+                    <div id="project-variant-menu" class="absolute left-0 mt-2 min-w-[10rem] rounded-lg border border-gray-200 bg-white shadow-lg hidden z-10">
+                        <div id="project-variant-list" class="py-1"></div>
+                    </div>
+                </div>
+            </div>
         </div>
     </div>
 
-    <div id="action-buttons" class="mt-4 grid grid-cols-1 sm:grid-cols-2 gap-3">
-        <button onclick="openCreateModal()" class="py-3 bg-blue-600 text-white rounded-lg hover:bg-blue-700 font-medium">
+    <div id="action-buttons" class="mt-4 grid grid-cols-1 sm:grid-cols-6 gap-3">
+        <button onclick="openNewVariantModal()" class="py-2 bg-purple-600 text-white rounded-lg hover:bg-purple-700 font-medium">
+            + Новый вариант
+        </button>
+        <button onclick="openCreateModal()" class="py-2 bg-blue-600 text-white rounded-lg hover:bg-blue-700 font-medium">
             + Создать новую квоту
         </button>
-        <button onclick="openImportModal()" class="py-3 bg-indigo-600 text-white rounded-lg hover:bg-indigo-700 font-medium">
+        <button onclick="openImportModal()" class="py-2 bg-indigo-600 text-white rounded-lg hover:bg-indigo-700 font-medium">
             Импорт квоты
         </button>
+        <button onclick="openProjectSettingsModal()" class="py-2 bg-gray-700 text-white rounded-lg hover:bg-gray-800 font-medium">
+            Параметры
+        </button>
+        <button onclick="exportProject()" class="py-2 bg-green-600 text-white rounded-lg hover:bg-green-700 font-medium">
+            Экспорт CSV
+        </button>
+        <button id="delete-variant-btn" onclick="deleteVariant()" class="py-2 bg-red-600 text-white rounded-lg hover:bg-red-700 font-medium hidden">
+            Удалить вариант
+        </button>
     </div>
     <div class="mt-2">
         <a id="tracker-link" href="https://tracker.yandex.ru/OPS-1933" target="_blank" rel="noopener noreferrer" class="text-sm text-blue-600 hover:text-blue-800 hover:underline">
@@ -58,38 +87,69 @@
     </div>
 </div>
 
-<div id="rename-modal" class="fixed inset-0 bg-black bg-opacity-50 hidden items-center justify-center z-50">
-    <div class="bg-white rounded-lg shadow-xl w-full max-w-md mx-4 p-6">
-        <h2 class="text-xl font-semibold mb-4">Переименовать квоту</h2>
+<div id="new-variant-modal" class="fixed inset-0 bg-black bg-opacity-50 hidden items-center justify-center z-50">
+    <div class="bg-white rounded-lg shadow-xl w-full max-w-lg p-6">
+        <h2 class="text-xl font-semibold mb-4">Новый вариант</h2>
         <div class="space-y-4">
             <div>
-                <label class="block text-sm font-medium text-gray-700 mb-1">Новое название</label>
-                <input type="text" id="rename-input"
+                <label class="block text-sm font-medium text-gray-700 mb-1">Код проекта</label>
+                <div id="new-variant-code" class="px-3 py-2 bg-gray-50 border rounded text-sm text-gray-700">—</div>
+            </div>
+            <div>
+                <label for="new-variant-name" class="block text-sm font-medium text-gray-700 mb-1">Название (необязательно)</label>
+                <input id="new-variant-name" type="text" placeholder="Например: Lenovo"
                        class="w-full px-3 py-2 border rounded focus:ring-2 focus:ring-blue-500 focus:border-blue-500">
-                <input type="hidden" id="rename-uuid">
+            </div>
+            <div>
+                <label for="new-variant-value" class="block text-sm font-medium text-gray-700 mb-1">Вариант</label>
+                <input id="new-variant-value" type="text" placeholder="Например: Lenovo"
+                       class="w-full px-3 py-2 border rounded focus:ring-2 focus:ring-blue-500 focus:border-blue-500">
+                <div class="text-xs text-gray-500 mt-1">Оставьте пустым для main нельзя — нужно уникальное значение.</div>
             </div>
         </div>
-        <div class="flex justify-end space-x-3 mt-6">
-            <button onclick="closeRenameModal()" class="px-4 py-2 text-gray-600 hover:text-gray-800">Отмена</button>
-            <button onclick="renameConfig()" class="px-4 py-2 bg-blue-600 text-white rounded hover:bg-blue-700">Сохранить</button>
+        <div class="mt-6 flex justify-end gap-2">
+            <button onclick="closeNewVariantModal()" class="px-4 py-2 text-gray-700 bg-gray-100 rounded hover:bg-gray-200">Отмена</button>
+            <button onclick="createNewVariant()" class="px-4 py-2 text-white bg-purple-600 rounded hover:bg-purple-700">Создать</button>
         </div>
     </div>
 </div>
 
-<div id="clone-modal" class="fixed inset-0 bg-black bg-opacity-50 hidden items-center justify-center z-50">
+<div id="config-action-modal" class="fixed inset-0 bg-black bg-opacity-50 hidden items-center justify-center z-50">
     <div class="bg-white rounded-lg shadow-xl w-full max-w-md mx-4 p-6">
-        <h2 class="text-xl font-semibold mb-4">Копировать квоту</h2>
+        <h2 class="text-xl font-semibold mb-4">Действия с квотой</h2>
         <div class="space-y-4">
             <div>
-                <label class="block text-sm font-medium text-gray-700 mb-1">Название копии</label>
-                <input type="text" id="clone-input"
+                <label class="block text-sm font-medium text-gray-700 mb-1">Название</label>
+                <input type="text" id="config-action-name"
                        class="w-full px-3 py-2 border rounded focus:ring-2 focus:ring-blue-500 focus:border-blue-500">
-                <input type="hidden" id="clone-uuid">
             </div>
+            <label class="flex items-center gap-2 text-sm text-gray-700">
+                <input type="checkbox" id="config-action-copy" class="rounded border-gray-300">
+                Создать копию
+            </label>
+            <div>
+                <label class="block text-sm font-medium text-gray-700 mb-1">Проект</label>
+                <input id="config-action-project-input"
+                       list="config-action-project-options"
+                       placeholder="Начните вводить проект"
+                       class="w-full px-3 py-2 border rounded focus:ring-2 focus:ring-blue-500 focus:border-blue-500">
+                <datalist id="config-action-project-options"></datalist>
+            </div>
+            <div>
+                <label class="block text-sm font-medium text-gray-700 mb-1">Вариант</label>
+                <input id="config-action-variant-input"
+                       list="config-action-variant-options"
+                       placeholder="Выберите вариант"
+                       class="w-full px-3 py-2 border rounded focus:ring-2 focus:ring-blue-500 focus:border-blue-500">
+                <datalist id="config-action-variant-options"></datalist>
+            </div>
+            <input type="hidden" id="config-action-uuid">
+            <input type="hidden" id="config-action-current-name">
+            <input type="hidden" id="config-action-current-project">
         </div>
         <div class="flex justify-end space-x-3 mt-6">
-            <button onclick="closeCloneModal()" class="px-4 py-2 text-gray-600 hover:text-gray-800">Отмена</button>
-            <button onclick="cloneConfig()" class="px-4 py-2 bg-green-600 text-white rounded hover:bg-green-700">Копировать</button>
+            <button onclick="closeConfigActionModal()" class="px-4 py-2 text-gray-600 hover:text-gray-800">Отмена</button>
+            <button onclick="saveConfigAction()" class="px-4 py-2 bg-blue-600 text-white rounded hover:bg-blue-700">Сохранить</button>
         </div>
     </div>
 </div>
@@ -113,11 +173,47 @@
     </div>
 </div>
 
+<div id="project-settings-modal" class="fixed inset-0 bg-black bg-opacity-50 hidden items-center justify-center z-50">
+    <div class="bg-white rounded-lg shadow-xl w-full max-w-md mx-4 p-6">
+        <h2 class="text-xl font-semibold mb-4">Параметры проекта</h2>
+        <div class="space-y-4">
+            <div>
+                <label class="block text-sm font-medium text-gray-700 mb-1">Код проекта</label>
+                <input type="text" id="project-settings-code"
+                       class="w-full px-3 py-2 border rounded focus:ring-2 focus:ring-blue-500 focus:border-blue-500">
+            </div>
+            <div>
+                <label class="block text-sm font-medium text-gray-700 mb-1">Вариант (необязательно)</label>
+                <input type="text" id="project-settings-variant"
+                       class="w-full px-3 py-2 border rounded focus:ring-2 focus:ring-blue-500 focus:border-blue-500">
+            </div>
+            <div>
+                <label class="block text-sm font-medium text-gray-700 mb-1">Название проекта</label>
+                <input type="text" id="project-settings-name"
+                       class="w-full px-3 py-2 border rounded focus:ring-2 focus:ring-blue-500 focus:border-blue-500">
+            </div>
+            <div>
+                <label class="block text-sm font-medium text-gray-700 mb-1">Ссылка для "открыть в трекере"</label>
+                <input type="text" id="project-settings-tracker-url" placeholder="https://tracker.example.com/PROJ-123"
+                       class="w-full px-3 py-2 border rounded focus:ring-2 focus:ring-blue-500 focus:border-blue-500">
+                <div class="text-xs text-gray-500 mt-1">Оставьте пустым, чтобы скрыть ссылку.</div>
+            </div>
+        </div>
+        <div class="flex justify-end space-x-3 mt-6">
+            <button onclick="closeProjectSettingsModal()" class="px-4 py-2 text-gray-600 hover:text-gray-800">Отмена</button>
+            <button onclick="saveProjectSettings()" class="px-4 py-2 bg-blue-600 text-white rounded hover:bg-blue-700">Сохранить</button>
+        </div>
+    </div>
+</div>
+
 <script>
 const projectUUID = '{{.ProjectUUID}}';
 let configStatusMode = 'active';
 let project = null;
 let allConfigs = [];
+let projectVariants = [];
+let projectsCatalog = [];
+let variantMenuInitialized = false;
 
 function escapeHtml(text) {
     const div = document.createElement('div');
@@ -131,6 +227,95 @@ function resolveProjectTrackerURL(projectData) {
     return explicitURL;
 }
 
+function formatProjectTitle(projectData) {
+    if (!projectData) return 'Проект';
+    const code = (projectData.code || '').trim();
+    const name = (projectData.name || '').trim();
+    const variant = (projectData.variant || '').trim();
+    if (!code) return name || 'Проект';
+    if (variant) {
+        return code + ': (' + variant + ') ' + (name || '');
+    }
+    return code + ': ' + (name || '');
+}
+
+function normalizeVariantLabel(variant) {
+    const trimmed = (variant || '').trim();
+    return trimmed === '' ? 'main' : trimmed;
+}
+
+async function loadVariantsForCode(code) {
+    try {
+        const resp = await fetch('/api/projects/all');
+        if (!resp.ok) return;
+        const data = await resp.json();
+        const allProjects = Array.isArray(data) ? data : (data.projects || []);
+        projectsCatalog = allProjects.filter(p => p && p.uuid && p.is_active !== false);
+        if (!code) {
+            projectVariants = [];
+            return;
+        }
+        projectVariants = allProjects
+            .filter(p => (p.code || '').trim() === code && p.is_active !== false)
+            .map(p => ({uuid: p.uuid, variant: (p.variant || '').trim()}));
+        projectVariants.sort((a, b) => normalizeVariantLabel(a.variant).localeCompare(normalizeVariantLabel(b.variant)));
+    } catch (e) {
+        // ignore
+    }
+}
+
+function renderVariantSelect() {
+    const list = document.getElementById('project-variant-list');
+    const menu = document.getElementById('project-variant-menu');
+    const button = document.getElementById('project-variant-button');
+    const label = document.getElementById('project-variant-label');
+    const codeLink = document.getElementById('project-code-link');
+    if (!list || !menu || !button || !label) return;
+    list.innerHTML = '';
+    const variants = projectVariants.length ? projectVariants : [{uuid: projectUUID, variant: (project && project.variant) || ''}];
+    let mainUUID = '';
+    variants.forEach(item => {
+        const variantLabel = normalizeVariantLabel(item.variant);
+        if (variantLabel === 'main' && !mainUUID) {
+            mainUUID = item.uuid;
+        }
+        const option = document.createElement('button');
+        option.type = 'button';
+        option.className = 'w-full text-left px-3 py-2 text-sm hover:bg-gray-50';
+        if (item.uuid === projectUUID) {
+            option.className += ' font-semibold text-gray-900';
+            label.textContent = variantLabel;
+        }
+        option.textContent = variantLabel;
+        option.onclick = function() {
+            menu.classList.add('hidden');
+            if (item.uuid && item.uuid !== projectUUID) {
+                window.location.href = '/projects/' + item.uuid;
+            }
+        };
+        list.appendChild(option);
+    });
+
+    if (codeLink) {
+        const targetMain = mainUUID || projectUUID;
+        codeLink.href = '/projects/' + targetMain;
+    }
+
+    if (!variantMenuInitialized) {
+        button.onclick = function(e) {
+            e.stopPropagation();
+            menu.classList.toggle('hidden');
+        };
+        document.addEventListener('click', function() {
+            menu.classList.add('hidden');
+        });
+        menu.addEventListener('click', function(e) {
+            e.stopPropagation();
+        });
+        variantMenuInitialized = true;
+    }
+}
+
 function setConfigStatusMode(mode) {
     if (mode !== 'active' && mode !== 'archived') return;
     configStatusMode = mode;
@@ -171,6 +356,7 @@ function renderConfigs(configs) {
     html += '<th class="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase">Цена (за 1 шт)</th>';
     html += '<th class="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase">Кол-во</th>';
     html += '<th class="px-4 py-3 text-right text-xs font-medium text-gray-500 uppercase">Сумма</th>';
+    html += '<th class="px-4 py-3 text-center text-xs font-medium text-gray-500 uppercase">Ревизия</th>';
     html += '<th class="px-4 py-3 text-right text-xs font-medium text-gray-500 uppercase">Действия</th>';
     html += '</tr></thead><tbody class="divide-y">';
 
@@ -191,17 +377,23 @@ function renderConfigs(configs) {
         }
         html += '<td class="px-4 py-3 text-sm text-gray-500">' + escapeHtml(author) + '</td>';
         html += '<td class="px-4 py-3 text-sm text-gray-500">$' + unitPrice.toLocaleString('en-US', {minimumFractionDigits: 2}) + '</td>';
-        html += '<td class="px-4 py-3 text-sm text-gray-500">' + serverCount + '</td>';
-        html += '<td class="px-4 py-3 text-sm text-right">$' + total.toLocaleString('en-US', {minimumFractionDigits: 2}) + '</td>';
+        if (configStatusMode === 'archived') {
+            html += '<td class="px-4 py-3 text-sm text-gray-500">' + serverCount + '</td>';
+        } else {
+            html += '<td class="px-4 py-3 text-sm text-gray-500"><input type="number" min="1" value="' + serverCount + '" class="w-16 px-1 py-0.5 border rounded text-center text-sm" data-uuid="' + c.uuid + '" data-prev="' + serverCount + '" onchange="updateConfigServerCount(this)"></td>';
+        }
+        html += '<td class="px-4 py-3 text-sm text-right" data-total-uuid="' + c.uuid + '">$' + total.toLocaleString('en-US', {minimumFractionDigits: 2}) + '</td>';
+        const versionNo = c.current_version_no || 1;
+        html += '<td class="px-4 py-3 text-sm text-center text-gray-500">v' + versionNo + '</td>';
         html += '<td class="px-4 py-3 text-sm text-right space-x-2">';
         if (configStatusMode === 'archived') {
             html += '<button onclick="reactivateConfig(\'' + c.uuid + '\')" class="text-emerald-600 hover:text-emerald-800" title="Восстановить">';
             html += '<svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M5 13l4 4L19 7"></path></svg></button>';
         } else {
-            html += '<button onclick="openCloneModal(\'' + c.uuid + '\', \'' + escapeHtml(c.name).replace(/'/g, "\\'") + '\')" class="text-green-600 hover:text-green-800" title="Копировать">';
-            html += '<svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M8 16H6a2 2 0 01-2-2V6a2 2 0 012-2h8a2 2 0 012 2v2m-6 12h8a2 2 0 002-2v-8a2 2 0 00-2-2h-8a2 2 0 00-2 2v8a2 2 0 002 2z"></path></svg></button>';
-            html += '<button onclick="openRenameModal(\'' + c.uuid + '\', \'' + escapeHtml(c.name).replace(/'/g, "\\'") + '\')" class="text-blue-600 hover:text-blue-800" title="Переименовать">';
-            html += '<svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M11 5H6a2 2 0 00-2 2v11a2 2 0 002 2h11a2 2 0 002-2v-5m-1.414-9.414a2 2 0 112.828 2.828L11.828 15H9v-2.828l8.586-8.586z"></path></svg></button>';
+            html += '<a href="/configs/' + c.uuid + '/revisions" class="text-purple-600 hover:text-purple-800 inline-block" title="Ревизии">';
+            html += '<svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 12h6m-6 4h6m2 5H7a2 2 0 01-2-2V5a2 2 0 012-2h5.586a1 1 0 01.707.293l5.414 5.414a1 1 0 01.293.707V19a2 2 0 01-2 2z"></path></svg></a>';
+            html += '<button onclick="openConfigActionModal(\'' + c.uuid + '\', \'' + escapeHtml(c.name).replace(/'/g, "\\'") + '\', \'' + (c.project_uuid || projectUUID) + '\')" class="text-indigo-600 hover:text-indigo-800" title="Переименовать / копировать / переместить">';
+            html += '<svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 7h16M4 12h16M4 17h16"></path></svg></button>';
             html += '<button onclick="deleteConfig(\'' + c.uuid + '\')" class="text-red-600 hover:text-red-800" title="В архив">';
             html += '<svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M19 7l-.867 12.142A2 2 0 0116.138 21H7.862a2 2 0 01-1.995-1.858L5 7m5 4v6m4-6v6m1-10V4a1 1 0 00-1-1h-4a1 1 0 00-1 1v3M4 7h16"></path></svg></button>';
         }
@@ -213,7 +405,8 @@ function renderConfigs(configs) {
     html += '<tr>';
     html += '<td class="px-4 py-3 text-sm font-medium text-gray-700" colspan="4">Итого по проекту</td>';
     html += '<td class="px-4 py-3 text-sm text-gray-700">' + configs.length + '</td>';
-    html += '<td class="px-4 py-3 text-sm text-right font-semibold text-gray-900">$' + totalSum.toLocaleString('en-US', {minimumFractionDigits: 2}) + '</td>';
+    html += '<td class="px-4 py-3 text-sm text-right font-semibold text-gray-900" data-footer-total="1">$' + totalSum.toLocaleString('en-US', {minimumFractionDigits: 2}) + '</td>';
+    html += '<td class="px-4 py-3"></td>';
     html += '<td class="px-4 py-3"></td>';
     html += '</tr>';
     html += '</tfoot>';
@@ -228,7 +421,9 @@ async function loadProject() {
         return false;
     }
     project = await resp.json();
-    document.getElementById('project-title').textContent = project.name;
+    document.getElementById('project-code').textContent = project.code || '—';
+    await loadVariantsForCode(project.code || '');
+    renderVariantSelect();
     const trackerLink = document.getElementById('tracker-link');
     if (trackerLink) {
         if (project && project.is_system) {
@@ -271,6 +466,56 @@ function openCreateModal() {
     document.getElementById('create-name').focus();
 }
 
+function openNewVariantModal() {
+    if (!project) return;
+    document.getElementById('new-variant-code').textContent = (project.code || '').trim() || '—';
+    document.getElementById('new-variant-name').value = project.name || '';
+    document.getElementById('new-variant-value').value = '';
+    document.getElementById('new-variant-modal').classList.remove('hidden');
+    document.getElementById('new-variant-modal').classList.add('flex');
+    document.getElementById('new-variant-value').focus();
+}
+
+function closeNewVariantModal() {
+    document.getElementById('new-variant-modal').classList.add('hidden');
+    document.getElementById('new-variant-modal').classList.remove('flex');
+}
+
+async function createNewVariant() {
+    if (!project) return;
+    const code = (project.code || '').trim();
+    const variant = (document.getElementById('new-variant-value').value || '').trim();
+    const nameRaw = (document.getElementById('new-variant-name').value || '').trim();
+    if (!code || !variant) {
+        showToast('Укажите вариант', 'error');
+        return;
+    }
+    const payload = {
+        code: code,
+        variant: variant,
+        name: nameRaw ? nameRaw : null
+    };
+    const resp = await fetch('/api/projects', {
+        method: 'POST',
+        headers: {'Content-Type': 'application/json'},
+        body: JSON.stringify(payload)
+    });
+    if (!resp.ok) {
+        const data = await resp.json().catch(() => ({}));
+        showToast(data.error || 'Ошибка создания варианта', 'error');
+        return;
+    }
+    const created = await resp.json().catch(() => null);
+    closeNewVariantModal();
+    showToast('Вариант создан', 'success');
+    if (created && created.uuid) {
+        window.location.href = '/projects/' + created.uuid;
+        return;
+    }
+    loadProject();
+    loadConfigs();
+}
+
 function closeCreateModal() {
     document.getElementById('create-modal').classList.add('hidden');
     document.getElementById('create-modal').classList.remove('flex');
@@ -318,68 +563,227 @@ async function reactivateConfig(uuid) {
     loadConfigs();
 }
 
-function openRenameModal(uuid, currentName) {
-    document.getElementById('rename-uuid').value = uuid;
-    document.getElementById('rename-input').value = currentName;
-    document.getElementById('rename-modal').classList.remove('hidden');
-    document.getElementById('rename-modal').classList.add('flex');
-}
-
-function closeRenameModal() {
-    document.getElementById('rename-modal').classList.add('hidden');
-    document.getElementById('rename-modal').classList.remove('flex');
-}
-
-async function renameConfig() {
-    const uuid = document.getElementById('rename-uuid').value;
-    const name = document.getElementById('rename-input').value.trim();
-    if (!name) {
-        alert('Введите название');
-        return;
-    }
-    const resp = await fetch('/api/configs/' + uuid + '/rename', {
-        method: 'PATCH',
-        headers: {'Content-Type': 'application/json'},
-        body: JSON.stringify({name: name})
+function projectCodeEntries() {
+    const byCode = new Map();
+    projectsCatalog.forEach(p => {
+        const code = (p.code || '').trim();
+        if (!code || byCode.has(code)) return;
+        byCode.set(code, {
+            code: code,
+            name: (p.name || '').trim()
+        });
     });
-    if (!resp.ok) {
-        alert('Не удалось переименовать');
-        return;
+    return Array.from(byCode.values()).sort((a, b) => a.code.localeCompare(b.code, 'ru'));
+}
+
+function formatProjectAutocompleteValue(entry) {
+    if (!entry) return '';
+    return entry.name ? (entry.code + ' - ' + entry.name) : entry.code;
+}
+
+function resolveProjectCodeFromInput(rawInput) {
+    const input = (rawInput || '').trim();
+    if (!input) return '';
+    const entries = projectCodeEntries();
+
+    const exactCode = entries.find(e => e.code.toLowerCase() === input.toLowerCase());
+    if (exactCode) return exactCode.code;
+
+    const exactDisplayMatches = entries.filter(e => formatProjectAutocompleteValue(e).toLowerCase() === input.toLowerCase());
+    if (exactDisplayMatches.length === 1) return exactDisplayMatches[0].code;
+
+    const byUniqueName = entries.filter(e => (e.name || '').toLowerCase() === input.toLowerCase());
+    if (byUniqueName.length === 1) return byUniqueName[0].code;
+
+    if (input.includes(' - ')) {
+        const codeCandidate = input.split(' - ')[0].trim();
+        const byCandidate = entries.find(e => e.code.toLowerCase() === codeCandidate.toLowerCase());
+        if (byCandidate) return byCandidate.code;
     }
-    closeRenameModal();
-    loadConfigs();
+
+    return '';
 }
 
-function openCloneModal(uuid, currentName) {
-    document.getElementById('clone-uuid').value = uuid;
-    document.getElementById('clone-input').value = currentName + ' (копия)';
-    document.getElementById('clone-modal').classList.remove('hidden');
-    document.getElementById('clone-modal').classList.add('flex');
-}
-
-function closeCloneModal() {
-    document.getElementById('clone-modal').classList.add('hidden');
-    document.getElementById('clone-modal').classList.remove('flex');
-}
-
-async function cloneConfig() {
-    const uuid = document.getElementById('clone-uuid').value;
-    const name = document.getElementById('clone-input').value.trim();
-    if (!name) {
-        alert('Введите название');
-        return;
-    }
-    const resp = await fetch('/api/projects/' + projectUUID + '/configs/' + uuid + '/clone', {
-        method: 'POST',
-        headers: {'Content-Type': 'application/json'},
-        body: JSON.stringify({name: name})
+function populateProjectAutocomplete() {
+    const options = document.getElementById('config-action-project-options');
+    options.innerHTML = '';
+    projectCodeEntries().forEach(entry => {
+        const opt = document.createElement('option');
+        opt.value = formatProjectAutocompleteValue(entry);
+        opt.label = entry.code;
+        options.appendChild(opt);
     });
-    if (!resp.ok) {
-        alert('Не удалось скопировать');
+}
+
+function variantsForProjectCode(projectCode) {
+    const code = (projectCode || '').trim();
+    if (!code) return [];
+    return projectsCatalog
+        .filter(p => (p.code || '').trim() === code)
+        .map(p => ({uuid: p.uuid, variant: normalizeVariantLabel(p.variant || '')}))
+        .sort((a, b) => a.variant.localeCompare(b.variant, 'ru'));
+}
+
+function populateVariantAutocomplete(projectCode, selectedVariantLabel) {
+    const options = document.getElementById('config-action-variant-options');
+    const input = document.getElementById('config-action-variant-input');
+    const variants = variantsForProjectCode(projectCode);
+    options.innerHTML = '';
+    variants.forEach(v => {
+        const opt = document.createElement('option');
+        opt.value = v.variant;
+        options.appendChild(opt);
+    });
+    if (selectedVariantLabel) {
+        input.value = selectedVariantLabel;
+    } else if (variants.length === 1) {
+        input.value = variants[0].variant;
+    } else {
+        input.value = '';
+    }
+}
+
+function resolveTargetProjectUUIDFromInputs() {
+    const projectCode = resolveProjectCodeFromInput(document.getElementById('config-action-project-input').value);
+    if (!projectCode) {
+        return {error: 'Выберите проект из подсказок'};
+    }
+    const variantLabel = normalizeVariantLabel(document.getElementById('config-action-variant-input').value || 'main');
+    const target = projectsCatalog.find(p =>
+        (p.code || '').trim() === projectCode &&
+        normalizeVariantLabel(p.variant || '') === variantLabel
+    );
+    if (!target) {
+        return {error: 'Выберите вариант из подсказок'};
+    }
+    return {uuid: target.uuid};
+}
+
+function syncActionModalMode() {
+    const copyCheckbox = document.getElementById('config-action-copy');
+    if (copyCheckbox.checked) {
+        // no-op: copy always uses latest revision
+    } else {
+        // no-op: copy always uses latest revision
+    }
+}
+
+async function openConfigActionModal(uuid, currentName, currentProjectUUID) {
+    document.getElementById('config-action-uuid').value = uuid;
+    document.getElementById('config-action-current-name').value = currentName;
+    document.getElementById('config-action-current-project').value = currentProjectUUID || projectUUID;
+    document.getElementById('config-action-name').value = currentName;
+    document.getElementById('config-action-copy').checked = false;
+    populateProjectAutocomplete();
+    const currentProject = projectsCatalog.find(p => p.uuid === (currentProjectUUID || projectUUID));
+    if (currentProject) {
+        const entry = {
+            code: (currentProject.code || '').trim(),
+            name: (currentProject.name || '').trim()
+        };
+        document.getElementById('config-action-project-input').value = formatProjectAutocompleteValue(entry);
+        populateVariantAutocomplete(entry.code, normalizeVariantLabel(currentProject.variant || ''));
+    } else {
+        document.getElementById('config-action-project-input').value = '';
+        populateVariantAutocomplete('', '');
+    }
+    syncActionModalMode();
+    document.getElementById('config-action-modal').classList.remove('hidden');
+    document.getElementById('config-action-modal').classList.add('flex');
+    const nameInput = document.getElementById('config-action-name');
+    nameInput.focus();
+    nameInput.select();
+}
+
+function closeConfigActionModal() {
+    document.getElementById('config-action-modal').classList.add('hidden');
+    document.getElementById('config-action-modal').classList.remove('flex');
+}
+
+async function saveConfigAction() {
+    const notify = (message, type) => {
+        if (typeof showToast === 'function') {
+            showToast(message, type || 'success');
+        } else {
+            alert(message);
+        }
+    };
+
+    const uuid = document.getElementById('config-action-uuid').value;
+    const currentName = document.getElementById('config-action-current-name').value;
+    const currentProjectUUID = document.getElementById('config-action-current-project').value || projectUUID;
+    const name = document.getElementById('config-action-name').value.trim();
+    const copy = document.getElementById('config-action-copy').checked;
+    const targetProject = resolveTargetProjectUUIDFromInputs();
+    if (targetProject.error) {
+        notify(targetProject.error, 'error');
         return;
     }
-    closeCloneModal();
-    loadConfigs();
+    const targetProjectUUID = targetProject.uuid || currentProjectUUID;
+
+    if (!name) {
+        notify('Введите название', 'error');
+        return;
+    }
+
+    if (copy) {
+        const cloneResp = await fetch('/api/projects/' + targetProjectUUID + '/configs/' + uuid + '/clone', {
+            method: 'POST',
+            headers: {'Content-Type': 'application/json'},
+            body: JSON.stringify({name: name})
+        });
+        if (!cloneResp.ok) {
+            notify('Не удалось скопировать квоту', 'error');
+            return;
+        }
+        closeConfigActionModal();
+        await loadConfigs();
+        notify('Копия создана', 'success');
+        if (targetProjectUUID && targetProjectUUID !== projectUUID) {
+            window.location.href = '/projects/' + targetProjectUUID;
+            return;
+        }
+        return;
+    }
+
+    let changed = false;
+    if (name !== currentName) {
+        const renameResp = await fetch('/api/configs/' + uuid + '/rename', {
+            method: 'PATCH',
+            headers: {'Content-Type': 'application/json'},
+            body: JSON.stringify({name: name})
+        });
+        if (!renameResp.ok) {
+            notify('Не удалось переименовать квоту', 'error');
+            return;
+        }
+        changed = true;
+    }
+
+    if (targetProjectUUID !== currentProjectUUID) {
+        const moveResp = await fetch('/api/configs/' + uuid + '/project', {
+            method: 'PATCH',
+            headers: {'Content-Type': 'application/json'},
+            body: JSON.stringify({project_uuid: targetProjectUUID})
+        });
+        if (!moveResp.ok) {
+            notify('Не удалось перенести квоту', 'error');
+            return;
+        }
+        changed = true;
+    }
+
+    if (!changed) {
+        closeConfigActionModal();
+        return;
+    }
+
+    closeConfigActionModal();
+    await loadConfigs();
+    notify('Изменения сохранены', 'success');
+    if (targetProjectUUID && targetProjectUUID !== projectUUID) {
+        window.location.href = '/projects/' + targetProjectUUID;
+    }
 }
 
 function openImportModal() {
@@ -397,6 +801,65 @@ function closeImportModal() {
     document.getElementById('import-modal').classList.remove('flex');
 }
 
+function openProjectSettingsModal() {
+    if (!project) return;
+    if (project.is_system) {
+        alert('Системный проект нельзя редактировать');
+        return;
+    }
+    document.getElementById('project-settings-code').value = project.code || '';
+    document.getElementById('project-settings-variant').value = project.variant || '';
+    document.getElementById('project-settings-name').value = project.name || '';
+    document.getElementById('project-settings-tracker-url').value = (project.tracker_url || '').trim();
+    document.getElementById('project-settings-modal').classList.remove('hidden');
+    document.getElementById('project-settings-modal').classList.add('flex');
+}
+
+function closeProjectSettingsModal() {
+    document.getElementById('project-settings-modal').classList.add('hidden');
+    document.getElementById('project-settings-modal').classList.remove('flex');
+}
+
+async function saveProjectSettings() {
+    if (!project) return;
+    const code = document.getElementById('project-settings-code').value.trim();
+    const variant = document.getElementById('project-settings-variant').value.trim();
+    const name = document.getElementById('project-settings-name').value.trim();
+    const trackerURL = document.getElementById('project-settings-tracker-url').value.trim();
+    if (!code) {
+        alert('Введите код проекта');
+        return;
+    }
+    const resp = await fetch('/api/projects/' + projectUUID, {
+        method: 'PUT',
+        headers: {'Content-Type': 'application/json'},
+        body: JSON.stringify({code: code, variant: variant, name: name, tracker_url: trackerURL})
+    });
+    if (!resp.ok) {
+        if (resp.status === 409) {
+            alert('Проект с таким кодом и вариантом уже существует');
+            return;
+        }
+        alert('Не удалось сохранить параметры проекта');
+        return;
+    }
+    project = await resp.json();
+    document.getElementById('project-code').textContent = project.code || '—';
+    await loadVariantsForCode(project.code || '');
+    renderVariantSelect();
+    const trackerLink = document.getElementById('tracker-link');
+    if (trackerLink) {
+        const trackerURLResolved = resolveProjectTrackerURL(project);
+        if (trackerURLResolved) {
+            trackerLink.href = trackerURLResolved;
+            trackerLink.classList.remove('hidden');
+        } else {
+            trackerLink.classList.add('hidden');
+        }
+    }
+    closeProjectSettingsModal();
+}
+
 async function loadImportOptions() {
     const resp = await fetch('/api/configs?page=1&per_page=500&status=active');
     if (!resp.ok) return;
@@ -476,23 +939,120 @@ function wildcardMatch(value, pattern) {
     return regex.test(value);
 }
 
+async function deleteVariant() {
+    if (!project) return;
+    const variantLabel = normalizeVariantLabel(project.variant);
+    if (!confirm('Удалить вариант «' + variantLabel + '»? Все квоты будут архивированы.')) return;
+    const resp = await fetch('/api/projects/' + projectUUID, {method: 'DELETE'});
+    if (!resp.ok) {
+        const data = await resp.json().catch(() => ({}));
+        alert(data.error || 'Не удалось удалить вариант');
+        return;
+    }
+    // Redirect to main variant or projects list
+    const mainVariant = projectVariants.find(v => normalizeVariantLabel(v.variant) === 'main');
+    if (mainVariant && mainVariant.uuid !== projectUUID) {
+        window.location.href = '/projects/' + mainVariant.uuid;
+    } else {
+        window.location.href = '/projects';
+    }
+}
+
+function updateDeleteVariantButton() {
+    const btn = document.getElementById('delete-variant-btn');
+    if (!btn || !project) return;
+    if ((project.variant || '').trim() !== '') {
+        btn.classList.remove('hidden');
+    } else {
+        btn.classList.add('hidden');
+    }
+}
+
 document.getElementById('create-modal').addEventListener('click', function(e) { if (e.target === this) closeCreateModal(); });
-document.getElementById('rename-modal').addEventListener('click', function(e) { if (e.target === this) closeRenameModal(); });
-document.getElementById('clone-modal').addEventListener('click', function(e) { if (e.target === this) closeCloneModal(); });
+document.getElementById('new-variant-modal').addEventListener('click', function(e) { if (e.target === this) closeNewVariantModal(); });
+document.getElementById('config-action-modal').addEventListener('click', function(e) { if (e.target === this) closeConfigActionModal(); });
 document.getElementById('import-modal').addEventListener('click', function(e) { if (e.target === this) closeImportModal(); });
+document.getElementById('project-settings-modal').addEventListener('click', function(e) { if (e.target === this) closeProjectSettingsModal(); });
+document.getElementById('config-action-project-input').addEventListener('input', function(e) {
+    const code = resolveProjectCodeFromInput(e.target.value);
+    populateVariantAutocomplete(code, '');
+});
+document.getElementById('config-action-copy').addEventListener('change', function(e) {
+    const currentName = document.getElementById('config-action-current-name').value;
+    const nameInput = document.getElementById('config-action-name');
+    if (e.target.checked && nameInput.value.trim() === currentName.trim()) {
+        nameInput.value = currentName + ' (копия)';
+    }
+    syncActionModalMode();
+});
 document.addEventListener('keydown', function(e) {
     if (e.key === 'Escape') {
         closeCreateModal();
-        closeRenameModal();
-        closeCloneModal();
+        closeConfigActionModal();
         closeImportModal();
+        closeProjectSettingsModal();
     }
 });
 
+async function updateConfigServerCount(input) {
+    const uuid = input.dataset.uuid;
+    const prevValue = parseInt(input.dataset.prev) || 1;
+    const newValue = parseInt(input.value);
+    if (!newValue || newValue < 1) {
+        input.value = prevValue;
+        return;
+    }
+    try {
+        const resp = await fetch('/api/configs/' + uuid + '/server-count', {
+            method: 'PATCH',
+            headers: {'Content-Type': 'application/json'},
+            body: JSON.stringify({server_count: newValue})
+        });
+        if (!resp.ok) {
+            input.value = prevValue;
+            showToast('Не удалось обновить количество', 'error');
+            return;
+        }
+        const updated = await resp.json();
+        input.dataset.prev = newValue;
+        // Update row total price
+        const totalCell = document.querySelector('[data-total-uuid="' + uuid + '"]');
+        if (totalCell && updated.total_price != null) {
+            totalCell.textContent = '$' + updated.total_price.toLocaleString('en-US', {minimumFractionDigits: 2});
+        }
+        // Update the config in allConfigs and recalculate footer total
+        for (let i = 0; i < allConfigs.length; i++) {
+            if (allConfigs[i].uuid === uuid) {
+                allConfigs[i].total_price = updated.total_price;
+                allConfigs[i].server_count = newValue;
+                break;
+            }
+        }
+        updateFooterTotal();
+    } catch (e) {
+        input.value = prevValue;
+        showToast('Ошибка сети', 'error');
+    }
+}
+
+function updateFooterTotal() {
+    let totalSum = 0;
+    allConfigs.forEach(c => { totalSum += (c.total_price || 0); });
+    const footer = document.querySelector('tfoot td[data-footer-total]');
+    if (footer) {
+        footer.textContent = '$' + totalSum.toLocaleString('en-US', {minimumFractionDigits: 2});
+    }
+}
+
+function exportProject() {
+    window.location.href = '/api/projects/' + projectUUID + '/export';
+}
+
 document.addEventListener('DOMContentLoaded', async function() {
     applyStatusModeUI();
     const ok = await loadProject();
     if (!ok) return;
+    updateDeleteVariantButton();
     await loadConfigs();
 });
 </script>

web/templates/projects.html

@@ -20,7 +20,7 @@
     </div>
 
     <div class="max-w-md">
-        <input id="projects-search" type="text" placeholder="Поиск проекта по названию"
+        <input id="projects-search" type="text" placeholder="Поиск проекта по названию или коду"
                class="w-full px-3 py-2 border rounded focus:ring-2 focus:ring-blue-500 focus:border-blue-500">
     </div>
 
@@ -31,11 +31,21 @@
     <div class="bg-white rounded-lg shadow-xl w-full max-w-md mx-4 p-6">
         <h2 class="text-xl font-semibold mb-4">Новый проект</h2>
         <div class="space-y-4">
+            <div>
+                <label for="create-project-name" class="block text-sm font-medium text-gray-700 mb-1">Название проекта</label>
+                <input id="create-project-name" type="text" placeholder="Например: Инфраструктура для OPS-123"
+                       class="w-full px-3 py-2 border rounded focus:ring-2 focus:ring-blue-500 focus:border-blue-500">
+            </div>
             <div>
                 <label for="create-project-code" class="block text-sm font-medium text-gray-700 mb-1">Код проекта</label>
                 <input id="create-project-code" type="text" placeholder="Например: OPS-123"
                        class="w-full px-3 py-2 border rounded focus:ring-2 focus:ring-blue-500 focus:border-blue-500">
             </div>
+            <div>
+                <label for="create-project-variant" class="block text-sm font-medium text-gray-700 mb-1">Вариант (необязательно)</label>
+                <input id="create-project-variant" type="text" placeholder="Например: Lenovo"
+                       class="w-full px-3 py-2 border rounded focus:ring-2 focus:ring-blue-500 focus:border-blue-500">
+            </div>
             <div>
                 <label for="create-project-tracker-url" class="block text-sm font-medium text-gray-700 mb-1">Ссылка на трекер</label>
                 <input id="create-project-tracker-url" type="url" placeholder="https://tracker.yandex.ru/OPS-123"
@@ -59,6 +69,8 @@ let sortField = 'created_at';
 let sortDir = 'desc';
 let createProjectTrackerManuallyEdited = false;
 let createProjectLastAutoTrackerURL = '';
+let variantsByCode = {};
+let variantsLoaded = false;
 
 const trackerBaseURL = 'https://tracker.yandex.ru/';
 
@@ -85,6 +97,55 @@ function formatDateTime(value) {
     });
 }
 
+function normalizeVariant(variant) {
+    const trimmed = (variant || '').trim();
+    return trimmed === '' ? 'main' : trimmed;
+}
+
+function renderVariantChips(code, fallbackVariant, fallbackUUID) {
+    const variants = variantsByCode[code || ''] || [];
+    if (!variants.length) {
+        const single = normalizeVariant(fallbackVariant);
+        const href = fallbackUUID ? ('/projects/' + fallbackUUID) : '/projects';
+        return '<a href="' + href + '" class="inline-flex items-center px-2 py-0.5 text-xs rounded-full bg-gray-100 text-gray-600 hover:bg-gray-200 hover:text-gray-900">' + escapeHtml(single) + '</a>';
+    }
+    return variants.map(v => {
+        const href = v.uuid ? ('/projects/' + v.uuid) : '/projects';
+        return '<a href="' + href + '" class="inline-flex items-center px-2 py-0.5 text-xs rounded-full bg-gray-100 text-gray-700 hover:bg-gray-200 hover:text-gray-900">' + escapeHtml(v.label) + '</a>';
+    }).join(' ');
+}
+
+async function loadVariantsIndex() {
+    if (variantsLoaded) return;
+    try {
+        const resp = await fetch('/api/projects/all');
+        if (!resp.ok) return;
+        const data = await resp.json();
+        const allProjects = Array.isArray(data) ? data : (data.projects || []);
+        variantsByCode = {};
+        allProjects.forEach(p => {
+            const code = (p.code || '').trim();
+            const variant = normalizeVariant(p.variant);
+            if (!variantsByCode[code]) {
+                variantsByCode[code] = [];
+            }
+            if (!variantsByCode[code].some(v => v.label === variant)) {
+                variantsByCode[code].push({label: variant, uuid: p.uuid});
+            }
+        });
+        Object.keys(variantsByCode).forEach(code => {
+            variantsByCode[code].sort((a, b) => {
+                if (a.label === 'main') return -1;
+                if (b.label === 'main') return 1;
+                return a.label.localeCompare(b.label);
+            });
+        });
+        variantsLoaded = true;
+    } catch (e) {
+        // ignore
+    }
+}
+
 function toggleSort(field) {
     if (sortField === field) {
         sortDir = sortDir === 'asc' ? 'desc' : 'asc';
@@ -132,10 +193,33 @@ async function loadProjects() {
         }
         const data = await resp.json();
         rows = data.projects || [];
+        if (Array.isArray(rows) && rows.length) {
+            const byCode = {};
+            rows.forEach(p => {
+                const codeKey = (p.code || '').trim();
+                if (!codeKey) {
+                    const fallbackKey = p.uuid || Math.random().toString(36);
+                    byCode[fallbackKey] = p;
+                    return;
+                }
+                const variant = (p.variant || '').trim();
+                if (!byCode[codeKey]) {
+                    byCode[codeKey] = p;
+                    return;
+                }
+                const current = byCode[codeKey];
+                const currentVariant = (current.variant || '').trim();
+                if (currentVariant !== '' && variant === '') {
+                    byCode[codeKey] = p;
+                }
+            });
+            rows = Object.values(byCode);
+        }
         total = data.total || 0;
         totalPages = data.total_pages || 0;
         page = data.page || currentPage;
         currentPage = page;
+        await loadVariantsIndex();
     } catch (e) {
         root.innerHTML = '<div class="text-red-600">Ошибка загрузки проектов: ' + escapeHtml(String(e.message || e)) + '</div>';
         return;
@@ -144,27 +228,22 @@ async function loadProjects() {
     let html = '<div class="overflow-x-auto"><table class="w-full">';
     html += '<thead class="bg-gray-50">';
     html += '<tr>';
+    html += '<th class="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase">Код</th>';
     html += '<th class="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase">';
-    html += '<button type="button" onclick="toggleSort(\'name\')" class="inline-flex items-center gap-1 hover:text-gray-700">Название проекта';
+    html += '<button type="button" onclick="toggleSort(\'name\')" class="inline-flex items-center gap-1 hover:text-gray-700">Название';
     if (sortField === 'name') {
         html += sortDir === 'asc' ? ' <span>↑</span>' : ' <span>↓</span>';
     }
     html += '</button></th>';
-    html += '<th class="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase">Автор</th>';
-    html += '<th class="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase">';
-    html += '<button type="button" onclick="toggleSort(\'created_at\')" class="inline-flex items-center gap-1 hover:text-gray-700">Создан';
-    if (sortField === 'created_at') {
-        html += sortDir === 'asc' ? ' <span>↑</span>' : ' <span>↓</span>';
-    }
-    html += '</button></th>';
-    html += '<th class="px-4 py-3 text-right text-xs font-medium text-gray-500 uppercase">Кол-во квот</th>';
-    html += '<th class="px-4 py-3 text-right text-xs font-medium text-gray-500 uppercase">Сумма</th>';
+    html += '<th class="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase">Создан @ автор</th>';
+    html += '<th class="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase">Изменен @ кто</th>';
+    html += '<th class="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase">Варианты</th>';
     html += '<th class="px-4 py-3 text-right text-xs font-medium text-gray-500 uppercase">Действия</th>';
     html += '</tr>';
     html += '<tr>';
     html += '<th class="px-4 py-2"></th>';
-    html += '<th class="px-4 py-2"><input id="projects-author-filter" type="text" value="' + escapeHtml(authorSearch) + '" placeholder="Фильтр автора" class="w-full px-2 py-1 border rounded text-xs focus:ring-1 focus:ring-blue-500 focus:border-blue-500"></th>';
     html += '<th class="px-4 py-2"></th>';
+    html += '<th class="px-4 py-2"><input id="projects-author-filter" type="text" value="' + escapeHtml(authorSearch) + '" placeholder="Фильтр автора" class="w-full px-2 py-1 border rounded text-xs focus:ring-1 focus:ring-blue-500 focus:border-blue-500"></th>';
     html += '<th class="px-4 py-2"></th>';
     html += '<th class="px-4 py-2"></th>';
     html += '<th class="px-4 py-2"></th>';
@@ -175,21 +254,28 @@ async function loadProjects() {
         html += '<tr><td colspan="6" class="px-4 py-6 text-sm text-gray-500 text-center">Проектов нет</td></tr>';
     }
 
-    rows.forEach(p => {
-        html += '<tr class="hover:bg-gray-50">';
-        html += '<td class="px-4 py-3 text-sm font-medium"><a class="text-blue-600 hover:underline" href="/projects/' + p.uuid + '">' + escapeHtml(p.name) + '</a></td>';
-        html += '<td class="px-4 py-3 text-sm text-gray-600">' + escapeHtml(p.owner_username || '—') + '</td>';
-        html += '<td class="px-4 py-3 text-sm text-gray-600">' + escapeHtml(formatDateTime(p.created_at)) + '</td>';
-        html += '<td class="px-4 py-3 text-sm text-right text-gray-700">' + (p.config_count || 0) + '</td>';
-        html += '<td class="px-4 py-3 text-sm text-right text-gray-700">' + formatMoney(p.total) + '</td>';
+        rows.forEach(p => {
+            html += '<tr class="hover:bg-gray-50">';
+        const displayName = p.name || '';
+        const createdBy = p.owner_username || '—';
+        const updatedBy = '—';
+        const createdLabel = formatDateTime(p.created_at) + ' @ ' + createdBy;
+        const updatedLabel = formatDateTime(p.updated_at) + ' @ ' + updatedBy;
+        const variantChips = renderVariantChips(p.code, p.variant, p.uuid);
+        html += '<td class="px-4 py-3 text-sm font-medium"><a class="text-blue-600 hover:underline" href="/projects/' + p.uuid + '">' + escapeHtml(p.code || '—') + '</a></td>';
+        html += '<td class="px-4 py-3 text-sm text-gray-700">' + escapeHtml(displayName) + '</td>';
+        html += '<td class="px-4 py-3 text-sm text-gray-600">' + escapeHtml(createdLabel) + '</td>';
+        html += '<td class="px-4 py-3 text-sm text-gray-600">' + escapeHtml(updatedLabel) + '</td>';
+        html += '<td class="px-4 py-3 text-sm">' + variantChips + '</td>';
         html += '<td class="px-4 py-3 text-sm text-right"><div class="inline-flex items-center gap-2">';
 
         if (p.is_active) {
-            html += '<button onclick="copyProject(\'' + p.uuid + '\', \'' + escapeHtml(p.name).replace(/'/g, "\\'") + '\')" class="text-green-700 hover:text-green-900" title="Копировать">';
+            const safeName = escapeHtml(displayName).replace(/'/g, "\\'");
+            html += '<button onclick="copyProject(' + JSON.stringify(p.uuid) + ', ' + JSON.stringify(displayName) + ')" class="text-green-700 hover:text-green-900" title="Копировать">';
             html += '<svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M8 16H6a2 2 0 01-2-2V6a2 2 0 012-2h8a2 2 0 012 2v2m-6 12h8a2 2 0 002-2v-8a2 2 0 00-2-2h-8a2 2 0 00-2 2v8a2 2 0 002 2z"></path></svg>';
             html += '</button>';
 
-            html += '<button onclick="renameProject(\'' + p.uuid + '\', \'' + escapeHtml(p.name).replace(/'/g, "\\'") + '\')" class="text-blue-700 hover:text-blue-900" title="Переименовать">';
+            html += '<button onclick="renameProject(' + JSON.stringify(p.uuid) + ', ' + JSON.stringify(displayName) + ')" class="text-blue-700 hover:text-blue-900" title="Переименовать">';
             html += '<svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M11 5H6a2 2 0 00-2 2v11a2 2 0 002 2h11a2 2 0 002-2v-5m-1.414-9.414a2 2 0 112.828 2.828L11.828 15H9v-2.828l8.586-8.586z"></path></svg>';
             html += '</button>';
 
@@ -251,15 +337,19 @@ function buildTrackerURLFromProjectCode(projectCode) {
 }
 
 function openCreateProjectModal() {
+    const nameInput = document.getElementById('create-project-name');
     const codeInput = document.getElementById('create-project-code');
+    const variantInput = document.getElementById('create-project-variant');
     const trackerInput = document.getElementById('create-project-tracker-url');
+    nameInput.value = '';
     codeInput.value = '';
+    variantInput.value = '';
     trackerInput.value = '';
     createProjectTrackerManuallyEdited = false;
     createProjectLastAutoTrackerURL = '';
     document.getElementById('create-project-modal').classList.remove('hidden');
     document.getElementById('create-project-modal').classList.add('flex');
-    codeInput.focus();
+    nameInput.focus();
 }
 
 function closeCreateProjectModal() {
@@ -278,10 +368,14 @@ function updateCreateProjectTrackerURL() {
 }
 
 async function createProject() {
+    const nameInput = document.getElementById('create-project-name');
     const codeInput = document.getElementById('create-project-code');
+    const variantInput = document.getElementById('create-project-variant');
     const trackerInput = document.getElementById('create-project-tracker-url');
-    const name = (codeInput.value || '').trim();
-    if (!name) {
+    const name = (nameInput.value || '').trim();
+    const code = (codeInput.value || '').trim();
+    const variant = (variantInput.value || '').trim();
+    if (!code) {
         alert('Введите код проекта');
         return;
     }
@@ -290,10 +384,16 @@ async function createProject() {
         headers: {'Content-Type': 'application/json'},
         body: JSON.stringify({
             name: name,
+            code: code,
+            variant: variant,
             tracker_url: (trackerInput.value || '').trim()
         })
     });
     if (!resp.ok) {
+        if (resp.status === 409) {
+            alert('Проект с таким кодом и вариантом уже существует');
+            return;
+        }
         alert('Не удалось создать проект');
         return;
     }
@@ -310,6 +410,10 @@ async function renameProject(projectUUID, currentName) {
         body: JSON.stringify({name: name.trim()})
     });
     if (!resp.ok) {
+        if (resp.status === 409) {
+            alert('Проект с таким названием уже существует');
+            return;
+        }
         alert('Не удалось переименовать проект');
         return;
     }
@@ -353,13 +457,20 @@ async function addConfigToProject(projectUUID) {
 async function copyProject(projectUUID, projectName) {
     const newName = prompt('Название копии проекта', projectName + ' (копия)');
     if (!newName || !newName.trim()) return;
+    const newCode = prompt('Код проекта', '');
+    if (!newCode || !newCode.trim()) return;
+    const newVariant = prompt('Вариант (необязательно)', '');
 
     const createResp = await fetch('/api/projects', {
         method: 'POST',
         headers: {'Content-Type': 'application/json'},
-        body: JSON.stringify({name: newName.trim()})
+        body: JSON.stringify({name: newName.trim(), code: newCode.trim(), variant: (newVariant || '').trim()})
     });
     if (!createResp.ok) {
+        if (createResp.status === 409) {
+            alert('Проект с таким кодом и вариантом уже существует');
+            return;
+        }
         alert('Не удалось создать копию проекта');
         return;
     }
@@ -385,40 +496,55 @@ async function copyProject(projectUUID, projectName) {
     loadProjects();
 }
 
-loadProjects();
-
-document.getElementById('projects-search').addEventListener('input', function(e) {
-    projectsSearch = (e.target.value || '').trim();
-    currentPage = 1;
+document.addEventListener('DOMContentLoaded', function() {
     loadProjects();
-});
 
-document.getElementById('create-project-code').addEventListener('input', function() {
-    updateCreateProjectTrackerURL();
-});
+    document.getElementById('projects-search').addEventListener('input', function(e) {
+        projectsSearch = (e.target.value || '').trim();
+        currentPage = 1;
+        loadProjects();
+    });
 
-document.getElementById('create-project-tracker-url').addEventListener('input', function(e) {
-    createProjectTrackerManuallyEdited = (e.target.value || '').trim() !== createProjectLastAutoTrackerURL;
-});
+    document.getElementById('create-project-code').addEventListener('input', function() {
+        updateCreateProjectTrackerURL();
+    });
 
-document.getElementById('create-project-code').addEventListener('keydown', function(e) {
-    if (e.key === 'Enter') {
-        e.preventDefault();
-        createProject();
-    }
-});
+    document.getElementById('create-project-name').addEventListener('keydown', function(e) {
+        if (e.key === 'Enter') {
+            e.preventDefault();
+            createProject();
+        }
+    });
 
-document.getElementById('create-project-tracker-url').addEventListener('keydown', function(e) {
-    if (e.key === 'Enter') {
-        e.preventDefault();
-        createProject();
-    }
-});
+    document.getElementById('create-project-tracker-url').addEventListener('input', function(e) {
+        createProjectTrackerManuallyEdited = (e.target.value || '').trim() !== createProjectLastAutoTrackerURL;
+    });
 
-document.getElementById('create-project-modal').addEventListener('click', function(e) {
-    if (e.target === this) {
-        closeCreateProjectModal();
-    }
+    document.getElementById('create-project-code').addEventListener('keydown', function(e) {
+        if (e.key === 'Enter') {
+            e.preventDefault();
+            createProject();
+        }
+    });
+
+    document.getElementById('create-project-tracker-url').addEventListener('keydown', function(e) {
+        if (e.key === 'Enter') {
+            e.preventDefault();
+            createProject();
+        }
+    });
+
+    document.getElementById('create-project-modal').addEventListener('click', function(e) {
+        if (e.target === this) {
+            closeCreateProjectModal();
+        }
+    });
+
+    // Listen for sync completion events from navbar
+    window.addEventListener('sync-completed', function(e) {
+        // Reset pagination and reload projects list
+        loadProjects();
+    });
 });
 </script>
 {{end}}