Merge feature/vendor-spec-import into main (v1.4)

Rename vendor price to project price, expand pricing CSV export
- Rename "Цена вендора" to "Цена проектная" in pricing tab table header and comments - Expand pricing CSV export to include: Lot, P/N вендора, Описание, Кол-во, Цена проектная Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-03-04 12:35:40 +03:00 · 2026-03-04 12:27:34 +03:00 · 2026-03-01 22:27:45 +03:00 · 2026-03-01 16:57:50 +03:00 · 2026-03-01 16:41:42 +03:00 · 2026-03-01 16:41:14 +03:00
46 changed files with 4122 additions and 260 deletions
--- a/.gitmodules
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "bible"]
+	path = bible
+	url = https://git.mchus.pro/mchus/bible.git
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -0,0 +1,11 @@
+# QuoteForge — Instructions for Codex
+
+## Shared Engineering Rules
+Read `bible/` — shared rules for all projects (CSV, logging, DB, tables, background tasks, code style).
+Start with `bible/rules/patterns/` for specific contracts.
+
+## Project Architecture
+Read `bible-local/` — QuoteForge specific architecture.
+Read order: `bible-local/README.md` → relevant files for the task.
+
+Every architectural decision specific to this project must be recorded in `bible-local/`.
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -1,24 +1,17 @@
-# QuoteForge - Claude Code Instructions
+# QuoteForge — Instructions for Claude

-## Bible
+## Shared Engineering Rules
+Read `bible/` — shared rules for all projects (CSV, logging, DB, tables, background tasks, code style).
+Start with `bible/rules/patterns/` for specific contracts.

-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.
+## Project Architecture
+Read `bible-local/` — QuoteForge specific architecture.
+Read order: `bible-local/README.md` → relevant files for the task.

-**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.
-
-## Quick Reference
+Every architectural decision specific to this project must be recorded in `bible-local/`.

 ```bash
-# Verify build
-go build ./cmd/qfs && go vet ./...
-
-# Run
-go run ./cmd/qfs
-make run
-
-# Build
-make build-release
+go build ./cmd/qfs && go vet ./...   # verify
+go run ./cmd/qfs                      # run
+make build-release                    # release build
 ```
--- a/1
+++ b/1
--- a/bible-local/01-overview.md
+++ b/bible-local/01-overview.md
--- a/bible-local/02-architecture.md
+++ b/bible-local/02-architecture.md
@@ -144,7 +144,7 @@ This prevents selecting empty/incomplete snapshots and removes nondeterministic

 ### Principle

-Append-only: every save creates an immutable snapshot in `local_configuration_versions`.
+Append-only for **spec+price** changes: immutable snapshots are stored in `local_configuration_versions`.

 ```
 local_configurations
@@ -153,9 +153,11 @@ local_configurations
                              local_configuration_versions (v1)
 ```

- `version_no = max + 1` on every save
+- `version_no = max + 1` when configuration **spec+price** changes
 - Old versions are never modified or deleted in normal flow
 - Rollback does **not** rewind history — it creates a **new** version from the snapshot
+- Operational updates (`line_no` reorder, server count, project move, rename)
+  are synced via `pending_changes` but do **not** create a new revision snapshot

 ### Rollback

@@ -181,6 +183,19 @@ local → pending → synced

 ---

+## Project Specification Ordering (`Line`)
+
+- Each project configuration has persistent `line_no` (`10,20,30...`) in both SQLite and MariaDB.
+- Project list ordering is deterministic:
+  `line_no ASC`, then `created_at DESC`, then `id DESC`.
+- Drag-and-drop reorder in project UI updates `line_no` for active project configurations.
+- Reorder writes are queued as configuration `update` events in `pending_changes`
+  without creating new configuration versions.
+- Backward compatibility: if remote MariaDB schema does not yet include `line_no`,
+  sync falls back to create/update without `line_no` instead of failing.
+
+---
+
 ## Sync Payload for Versioning

 Events in `pending_changes` for configurations contain:
--- a/bible-local/03-database.md
+++ b/bible-local/03-database.md
@@ -21,11 +21,22 @@ File: `qfs.db` in the user-state directory (see [05-config.md](05-config.md)).
 | `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` |

+#### Partnumber Books (PN → LOT mapping, pull-only from PriceForge)
+
+| Table | Purpose | Key Fields |
+|-------|---------|------------|
+| `local_partnumber_books` | Version snapshots of PN→LOT mappings | `id`, `server_id` (unique), `version`, `created_at`, `is_active` |
+| `local_partnumber_book_items` | PN→LOT mapping rows | `id`, `book_id` (FK), `partnumber`, `lot_name`, `is_primary_pn` |
+
+Active book: `WHERE is_active=1 ORDER BY created_at DESC, id DESC LIMIT 1`
+
+`is_primary_pn=1` means this PN's quantity in the vendor BOM determines qty(LOT). If only non-primary PNs are present for a LOT, qty defaults to 1.
+
 #### 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_configurations` | Saved configurations | `id`, `uuid` (unique), `items` (JSON), `vendor_spec` (JSON: PN/qty/description + canonical `lot_mappings[]`), `line_no`, `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` |

@@ -51,6 +62,7 @@ INDEX local_pricelists(source, created_at)   -- used for "latest by source" quer
 INDEX local_configurations(pricelist_id)
 INDEX local_configurations(warehouse_pricelist_id)
 INDEX local_configurations(competitor_pricelist_id)
+INDEX local_configurations(project_uuid, line_no)  -- project ordering (Line column)
 UNIQUE INDEX local_configurations(uuid)
 ```

@@ -90,11 +102,16 @@ Database: `RFQ_LOG`
 | `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_configurations` | Saved configurations (includes `line_no`) | SELECT, INSERT, UPDATE |
+| `lot_partnumbers` | Partnumber → lot mapping (pricelist enrichment) | SELECT |
+| `stock_log` | Latest stock qty by partnumber (pricelist enrichment) | SELECT |
 | `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 |
+| `qt_partnumber_books` | Partnumber book snapshots (written by PriceForge) | SELECT |
+| `qt_partnumber_book_items` | PN→LOT mapping rows (written by PriceForge) | SELECT |
+| `qt_vendor_partnumber_seen` | Vendor PN tracking for unresolved/ignored BOM rows (`is_ignored`) | INSERT, UPDATE |

 ### Grant Permissions to Existing User

@@ -114,6 +131,10 @@ 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>'@'%';

+GRANT SELECT ON RFQ_LOG.qt_partnumber_books TO '<DB_USER>'@'%';
+GRANT SELECT ON RFQ_LOG.qt_partnumber_book_items TO '<DB_USER>'@'%';
+GRANT INSERT, UPDATE ON RFQ_LOG.qt_vendor_partnumber_seen TO '<DB_USER>'@'%';
+
 FLUSH PRIVILEGES;
 ```

@@ -134,6 +155,9 @@ 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'@'%';
+GRANT SELECT ON RFQ_LOG.qt_partnumber_books TO 'quote_user'@'%';
+GRANT SELECT ON RFQ_LOG.qt_partnumber_book_items TO 'quote_user'@'%';
+GRANT INSERT, UPDATE ON RFQ_LOG.qt_vendor_partnumber_seen TO 'quote_user'@'%';

 FLUSH PRIVILEGES;
 SHOW GRANTS FOR 'quote_user'@'%';
@@ -147,21 +171,22 @@ SHOW GRANTS FOR 'quote_user'@'%';

 ## Migrations

-### SQLite Migrations (local)
+### SQLite Migrations (local) — три уровня, выполняются при каждом старте
+
+**1. GORM AutoMigrate** (`internal/localdb/localdb.go`) — первый и основной уровень.
+Список Go-моделей передаётся в `db.AutoMigrate(...)`. GORM создаёт отсутствующие таблицы и добавляет новые колонки. Колонки и таблицы **не удаляет**.
+→ Для добавления новой таблицы или колонки достаточно добавить модель/поле и включить модель в AutoMigrate.
+
+**2. `runLocalMigrations`** (`internal/localdb/migrations.go`) — второй уровень, для операций которые AutoMigrate не умеет: backfill данных, пересоздание таблиц, создание индексов.
+Каждая функция выполняется один раз — идемпотентность через запись `id` в `local_schema_migrations`.
+
+**3. Централизованные (server-side)** — третий уровень, при проверке готовности к синку.
+SQL-тексты хранятся в `qt_client_local_migrations` (MariaDB, пишет только PriceForge). Клиент читает, применяет к локальной SQLite, записывает в `local_remote_migrations_applied` + `qt_client_schema_state`.
+
+### MariaDB Migrations (server-side)

 - 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
+- Applied via `-migrate` flag
 - `min_app_version` — minimum app version required for the migration

 ---
--- a/bible-local/04-api.md
+++ b/bible-local/04-api.md
@@ -57,6 +57,8 @@
 | GET | `/api/configs/:uuid/versions` | List versions |
 | GET | `/api/configs/:uuid/versions/:version` | Get specific version |

+`line` field in configuration payloads is backed by persistent `line_no` in DB.
+
 ### Projects

 | Method | Endpoint | Purpose |
@@ -67,6 +69,10 @@
 | 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 |
+| PATCH | `/api/projects/:uuid/configs/reorder` | Reorder active project configurations (`ordered_uuids`) and persist `line_no` |
+
+`GET /api/projects/:uuid/configs` ordering:
+`line ASC`, then `created_at DESC`, then `id DESC`.

 ### Sync

@@ -83,9 +89,38 @@
 | 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 |
+| POST | `/api/sync/partnumber-seen` | Report unresolved/ignored vendor PNs for server-side tracking | QuoteForge → MariaDB |

 **If sync is blocked by the readiness guard:** all POST sync methods return `423 Locked` with `reason_code` and `reason_text`.

+### Vendor Spec (BOM)
+
+| Method | Endpoint | Purpose |
+|--------|----------|---------|
+| GET | `/api/configs/:uuid/vendor-spec` | Fetch stored vendor BOM |
+| PUT | `/api/configs/:uuid/vendor-spec` | Replace vendor BOM (full update) |
+| POST | `/api/configs/:uuid/vendor-spec/resolve` | Resolve PNs → LOTs (read-only) |
+| POST | `/api/configs/:uuid/vendor-spec/apply` | Apply resolved LOTs to cart |
+
+Notes:
+- `GET` / `PUT /api/configs/:uuid/vendor-spec` exchange normalized BOM rows (`vendor_spec`), not raw pasted Excel layout.
+- BOM row contract stores canonical LOT mapping list as seen in BOM UI:
+  - `lot_mappings[]`
+  - each mapping contains `lot_name` + `quantity_per_pn`
+- `POST /api/configs/:uuid/vendor-spec/apply` rebuilds cart items from explicit BOM mappings:
+  - all LOTs from `lot_mappings[]`
+
+### Partnumber Books (read-only)
+
+| Method | Endpoint | Purpose |
+|--------|----------|---------|
+| GET | `/api/partnumber-books` | List local book snapshots |
+| GET | `/api/partnumber-books/:id` | Items for a book by `server_id` |
+| POST | `/api/sync/partnumber-books` | Pull book snapshots from MariaDB |
+
+See [09-vendor-spec.md](09-vendor-spec.md) for schema and pull logic.
+See [09-vendor-spec.md](09-vendor-spec.md) for `vendor_spec` JSON schema and BOM UI mapping contract.
+
 ### Export

 | Method | Endpoint | Purpose |
@@ -108,6 +143,7 @@
 | `/projects/:uuid` | Project details |
 | `/pricelists` | Pricelist list |
 | `/pricelists/:id` | Pricelist details |
+| `/partnumber-books` | Partnumber books (active book summary + snapshot history) |
 | `/setup` | Connection settings |

 ---
--- a/bible-local/05-config.md
+++ b/bible-local/05-config.md
--- a/bible-local/06-backup.md
+++ b/bible-local/06-backup.md
--- a/bible-local/07-dev.md
+++ b/bible-local/07-dev.md
@@ -34,7 +34,7 @@ make help                 # All available commands
 ## Code Style

 - **Formatting:** `gofmt` (mandatory)
- **Logging:** `slog` only (structured logging)
+- **Logging:** `slog` only (structured logging to the binary's stdout/stderr). No `console.log` or any other logging in browser-side JS — the browser console is never used for diagnostics.
 - **Errors:** explicit wrapping with context (`fmt.Errorf("context: %w", err)`)
 - **Style:** no unnecessary abstractions; minimum code for the task

--- a/bible-local/09-vendor-spec.md
+++ b/bible-local/09-vendor-spec.md
@@ -0,0 +1,364 @@
+# 09 — Vendor Spec (BOM Import)
+
+## Overview
+
+The vendor spec feature allows importing a vendor BOM (Bill of Materials) into a configuration. It maps vendor part numbers (PN) to internal LOT names using an active partnumber book (snapshot pulled from PriceForge), then aggregates quantities to populate the Estimate (cart).
+
+---
+
+## Architecture
+
+### Storage
+
+| Data | Storage | Sync direction |
+|------|---------|---------------|
+| `vendor_spec` JSON | `local_configurations.vendor_spec` (TEXT, JSON-encoded) | Two-way via `pending_changes` |
+| Partnumber book snapshots | `local_partnumber_books` + `local_partnumber_book_items` | Pull-only from PriceForge |
+
+`vendor_spec` is a JSON array of `VendorSpecItem` objects stored inside the configuration row. It syncs to MariaDB `qt_configurations.vendor_spec` via the existing pending_changes mechanism.
+
+### `vendor_spec` JSON Schema
+
+```json
+[
+  {
+    "sort_order": 10,
+    "vendor_partnumber": "ABC-123",
+    "quantity": 2,
+    "description": "...",
+    "unit_price": 4500.00,
+    "total_price": 9000.00,
+    "lot_mappings": [
+      { "lot_name": "LOT_A", "quantity_per_pn": 1 },
+      { "lot_name": "LOT_B", "quantity_per_pn": 2 }
+    ]
+  }
+]
+```
+
+`lot_mappings[]` is the canonical persisted LOT mapping list for a BOM row.
+Each mapping entry stores:
+
+- `lot_name`
+- `quantity_per_pn` (how many units of this LOT are included in **one vendor PN**)
+
+### PN → LOT Mapping Contract (single LOT, multiplier, bundle)
+
+QuoteForge expects the server to return/store BOM rows (`vendor_spec`) using a single canonical mapping list:
+
+- `lot_mappings[]` contains **all** LOT mappings for the PN row (single LOT and bundle cases alike)
+- the list stores exactly what the user sees in BOM (LOT + "LOT в 1 PN")
+- the DB contract does **not** split mappings into "base LOT" vs "bundle LOTs"
+
+#### Final quantity contribution to Estimate
+
+For one BOM row with vendor PN quantity `pn_qty`:
+
+- each mapping contribution:
+  - `lot_qty = pn_qty * lot_mappings[i].quantity_per_pn`
+
+#### Example: one PN maps to multiple LOTs
+
+```json
+{
+  "vendor_partnumber": "SYS-821GE-TNHR",
+  "quantity": 3,
+  "lot_mappings": [
+    { "lot_name": "CHASSIS_X13_8GPU", "quantity_per_pn": 1 },
+    { "lot_name": "PS_3000W_Titanium", "quantity_per_pn": 2 },
+    { "lot_name": "RAILKIT_X13", "quantity_per_pn": 1 }
+  ]
+}
+```
+
+This row contributes to Estimate:
+
+- `CHASSIS_X13_8GPU` → `3 * 1 = 3`
+- `PS_3000W_Titanium` → `3 * 2 = 6`
+- `RAILKIT_X13` → `3 * 1 = 3`
+
+---
+
+## Partnumber Books (Snapshots)
+
+Partnumber books are immutable versioned snapshots of the global PN→LOT mapping table, analogous to pricelists. PriceForge creates new snapshots; QuoteForge only pulls and reads them.
+
+### SQLite (local mirror)
+
+```sql
+CREATE TABLE local_partnumber_books (
+    id         INTEGER PRIMARY KEY AUTOINCREMENT,
+    server_id  INTEGER UNIQUE NOT NULL,   -- id from qt_partnumber_books
+    version    TEXT    NOT NULL,          -- format YYYY-MM-DD-NNN
+    created_at DATETIME NOT NULL,
+    is_active  INTEGER NOT NULL DEFAULT 1
+);
+
+CREATE TABLE local_partnumber_book_items (
+    id            INTEGER PRIMARY KEY AUTOINCREMENT,
+    book_id       INTEGER NOT NULL,      -- FK → local_partnumber_books.id
+    partnumber    TEXT    NOT NULL,
+    lot_name      TEXT    NOT NULL,
+    is_primary_pn INTEGER NOT NULL DEFAULT 0,
+    description   TEXT
+);
+CREATE INDEX idx_local_book_pn ON local_partnumber_book_items(book_id, partnumber);
+```
+
+**Active book query:** `WHERE is_active=1 ORDER BY created_at DESC, id DESC LIMIT 1`
+
+**Schema creation:** GORM AutoMigrate (not `runLocalMigrations`).
+
+### MariaDB (managed exclusively by PriceForge)
+
+```sql
+CREATE TABLE qt_partnumber_books (
+    id         INT AUTO_INCREMENT PRIMARY KEY,
+    version    VARCHAR(50)  NOT NULL,
+    created_at DATETIME     NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    is_active  TINYINT(1)   NOT NULL DEFAULT 1
+);
+
+CREATE TABLE qt_partnumber_book_items (
+    id            INT AUTO_INCREMENT PRIMARY KEY,
+    book_id       INT          NOT NULL,
+    partnumber    VARCHAR(255) NOT NULL,
+    lot_name      VARCHAR(255) NOT NULL,
+    is_primary_pn TINYINT(1)   NOT NULL DEFAULT 0,
+    description   VARCHAR(10000) NULL,
+    INDEX idx_book_pn (book_id, partnumber),
+    FOREIGN KEY (book_id) REFERENCES qt_partnumber_books(id)
+);
+
+ALTER TABLE qt_configurations ADD COLUMN vendor_spec JSON NULL;
+```
+
+QuoteForge has `SELECT` permission only on `qt_partnumber_books` and `qt_partnumber_book_items`. All writes are managed by PriceForge.
+
+**Grant (add to existing user setup):**
+```sql
+GRANT SELECT ON RFQ_LOG.qt_partnumber_books TO '<DB_USER>'@'%';
+GRANT SELECT ON RFQ_LOG.qt_partnumber_book_items TO '<DB_USER>'@'%';
+```
+
+### `is_primary_pn` semantics
+
+- `1` = primary PN for this `lot_name`. Its quantity in the vendor BOM determines `qty(LOT)`.
+- `0` = non-primary (trigger) PN. If no primary PN for the LOT is found in BOM, contributes `qty=1`.
+
+---
+
+## Resolution Algorithm (3-step)
+
+For each `vendor_partnumber` in the BOM, QuoteForge builds/updates UI-visible LOT mappings:
+
+1. **Active book lookup** — query `local_partnumber_book_items WHERE book_id = activeBook.id AND partnumber = ?`.
+2. **Populate BOM UI** — if a match exists, BOM row shows a LOT value (user can still edit it).
+3. **Unresolved** — red row + inline LOT input with strict autocomplete.
+
+Persistence note: the application stores the final user-visible mappings in `lot_mappings[]` (not separate "resolved/manual" persisted fields).
+
+---
+
+## Qty Aggregation Logic
+
+After resolution, qty per LOT is computed as:
+
+```
+qty(lot) = SUM(quantity of rows where is_primary_pn=1 AND resolved_lot=lot)
+           if at least one primary PN for this lot was found in BOM
+         = 1
+           if only non-primary PNs for this lot were found
+```
+
+Examples (book: LOT_A → x1[primary], x2, x3):
+- BOM: x2×1, x3×2 → 1×LOT_A (no primary PN)
+- BOM: x1×2, x2×1 → 2×LOT_A (primary qty=2)
+- BOM: x1×1, x2×3 → 1×LOT_A (primary qty=1)
+
+---
+
+## UI: Three Top-Level Tabs
+
+The configurator (`/configurator`) has three tabs:
+
+1. **Estimate** — existing cart/component configurator (unchanged).
+2. **BOM** — paste/import vendor BOM, manual column mapping, LOT matching, bundle decomposition (`1 PN -> multiple LOTs`), "Пересчитать эстимейт", "Очистить".
+3. **Ценообразование** — pricing summary table + custom price input.
+
+BOM data is shared between tabs 2 and 3.
+
+### BOM Import UI (raw table, manual column mapping)
+
+After paste (`Ctrl+V`) QuoteForge renders an editable raw table (not auto-detected parsing).
+
+- The pasted rows are shown **as-is** (including header rows, if present).
+- The user selects a type for each column manually:
+  - `P/N`
+  - `Кол-во`
+  - `Цена`
+  - `Описание`
+  - `Не использовать`
+- Required mapping:
+  - exactly one `P/N`
+  - exactly one `Кол-во`
+- Optional mapping:
+  - `Цена` (0..1)
+  - `Описание` (0..1)
+- Rows can be:
+  - ignored (UI-only, excluded from `vendor_spec`)
+  - deleted
+- Raw cells are editable inline after paste.
+
+Notes:
+- There is **no auto column detection**.
+- There is **no auto header-row skip**.
+- Raw import layout itself is not stored on server; only normalized `vendor_spec` is stored.
+
+### LOT matching in BOM table
+
+The BOM table adds service columns on the right:
+
+- `LOT`
+- `LOT в 1 PN`
+- actions (`+`, ignore, delete)
+
+`LOT` behavior:
+- The first LOT row shown in the BOM UI is the primary LOT mapping for the PN row.
+- Additional LOT rows are added via the `+` action.
+- inline LOT input is strict:
+  - autocomplete source = full local components list (`/api/components?per_page=5000`)
+  - free text that does not match an existing LOT is rejected
+
+`LOT в 1 PN` behavior:
+- quantity multiplier for each visible LOT row in BOM (`quantity_per_pn` in persisted `lot_mappings[]`)
+- default = `1`
+- editable inline
+
+### Bundle mode (`1 PN -> multiple LOTs`)
+
+The `+` action in BOM rows adds an extra LOT mapping row for the same vendor PN row.
+
+- All visible LOT rows (first + added rows) are persisted uniformly in `lot_mappings[]`
+- Each mapping row has:
+  - LOT
+  - qty (`LOT in 1 PN` = `quantity_per_pn`)
+
+### BOM restore on config open
+
+On config open, QuoteForge loads `vendor_spec` from server and reconstructs the editable BOM table in normalized form:
+
+- columns restored as: `Qty | P/N | Description | Price`
+- column mapping restored as:
+  - `qty`, `pn`, `description`, `price`
+- LOT / `LOT в 1 PN` rows are restored from `vendor_spec.lot_mappings[]`
+
+This restores the BOM editing state, but not the original raw Excel layout (extra columns, ignored rows, original headers).
+
+### Pricing Tab: column order
+
+```
+LOT | PN вендора | Описание | Кол-во | Estimate | Цена вендора | Склад | Конк.
+```
+
+**If BOM is empty** — the pricing tab still renders, using cart items as rows (PN вендора = "—", Цена вендора = "—").
+
+**Description source priority:** BOM row description → LOT description from `local_components`.
+
+### Pricing Tab: BOM + Estimate merge behavior
+
+When BOM exists, the pricing tab renders:
+
+- BOM-based rows (including rows resolved via manual LOT and bundle mappings)
+- plus **Estimate-only LOTs** (rows currently in cart but not covered by BOM mappings)
+
+Estimate-only rows are shown as separate rows with:
+- `PN вендора = "—"`
+- vendor price = `—`
+- description from local components
+
+### Pricing Tab: "Своя цена" input
+
+- Manual entry → proportionally redistributes custom price into "Цена вендора" cells (proportional to each row's Estimate share). Last row absorbs rounding remainder.
+- "Проставить цены BOM" button → restores per-row original BOM prices directly (no proportional redistribution). Sets "Своя цена" to their sum.
+- Both paths show "Скидка от Estimate: X%" info.
+- "Экспорт CSV" button → downloads `pricing_<uuid>.csv` with UTF-8 BOM, same column order as table, plus Итого row.
+
+---
+
+## API Endpoints
+
+| Method | URL | Description |
+|--------|-----|-------------|
+| GET | `/api/configs/:uuid/vendor-spec` | Fetch stored BOM |
+| PUT | `/api/configs/:uuid/vendor-spec` | Replace BOM (full update) |
+| POST | `/api/configs/:uuid/vendor-spec/resolve` | Resolve PNs → LOTs (no cart mutation) |
+| POST | `/api/configs/:uuid/vendor-spec/apply` | Apply resolved LOTs to cart |
+| GET | `/api/partnumber-books` | List local book snapshots |
+| GET | `/api/partnumber-books/:id` | Items for a book by server_id |
+| POST | `/api/sync/partnumber-books` | Pull book snapshots from MariaDB |
+| POST | `/api/sync/partnumber-seen` | Push unresolved PNs to `qt_vendor_partnumber_seen` on MariaDB |
+
+## Unresolved PN Tracking (`qt_vendor_partnumber_seen`)
+
+After each `resolveBOM()` call, QuoteForge pushes PN rows to `POST /api/sync/partnumber-seen` (fire-and-forget from JS — errors silently ignored):
+
+- unresolved BOM rows (`ignored = false`)
+- raw BOM rows explicitly marked as ignored in UI (`ignored = true`) — these rows are **not** saved to `vendor_spec`, but are reported for server-side tracking
+
+The handler calls `sync.PushPartnumberSeen()` which upserts into `qt_vendor_partnumber_seen`:
+
+```sql
+INSERT INTO qt_vendor_partnumber_seen (source_type, vendor, partnumber, description, is_ignored, last_seen_at)
+VALUES ('manual', '', ?, ?, ?, NOW())
+ON DUPLICATE KEY UPDATE
+    last_seen_at = VALUES(last_seen_at),
+    is_ignored   = VALUES(is_ignored),
+    description  = COALESCE(NULLIF(VALUES(description), ''), description)
+```
+
+Uniqueness key: `partnumber` only (after PriceForge migration 025). PriceForge uses this table for populating the partnumber book.
+
+## BOM Persistence
+
+- `vendor_spec` is saved to server via `PUT /api/configs/:uuid/vendor-spec`.
+- `GET` / `PUT` `vendor_spec` must preserve row-level mapping fields used by the UI:
+  - `lot_mappings[]`
+  - each item: `lot_name`, `quantity_per_pn`
+- `description` is persisted in each BOM row and is used by the Pricing tab when available.
+- Ignored raw rows are **not** persisted into `vendor_spec`.
+- The PUT handler explicitly marshals `VendorSpec` to JSON string before passing to GORM `Update` (GORM does not reliably call `driver.Valuer` for custom types in `Update(column, value)`).
+- BOM is autosaved (debounced) after BOM-changing actions, including:
+  - `resolveBOM()`
+  - LOT row qty (`LOT в 1 PN`) changes
+  - LOT row add/remove (`+` / delete in bundle context)
+- "Сохранить BOM" button triggers explicit save.
+
+## Pricing Tab: Estimate Price Source
+
+`renderPricingTab()` is async. It calls `POST /api/quote/price-levels` with LOTs collected from:
+
+- `lot_mappings[]` from BOM rows
+- current Estimate/cart LOTs not covered by BOM mappings (to show estimate-only rows)
+
+This ensures Estimate prices appear for:
+
+- manually matched LOTs in the BOM tab
+- bundle LOTs
+- LOTs already present in Estimate but not mapped from BOM
+
+### Apply to Estimate (`Пересчитать эстимейт`)
+
+When applying BOM to Estimate, QuoteForge builds cart rows from explicit UI mappings stored in `lot_mappings[]`.
+
+For a BOM row with PN qty = `Q`:
+
+- each mapped LOT contributes `Q * quantity_per_pn`
+
+Rows without any valid LOT mapping are skipped.
+
+## Web Route
+
+| Route | Page |
+|-------|------|
+| `/partnumber-books` | Partnumber books — active book summary (unique LOTs, total PN, primary PN count), searchable items table, collapsible snapshot history |
--- a/bible-local/README.md
+++ b/bible-local/README.md
--- a/cmd/qfs/main.go
+++ b/cmd/qfs/main.go
@@ -336,8 +336,6 @@ func derefString(value *string) string {
 	return *value
 }

- 
-
 func setConfigDefaults(cfg *config.Config) {
 	if cfg.Server.Host == "" {
 		cfg.Server.Host = "127.0.0.1"
@@ -822,6 +820,8 @@ func setupRouter(cfg *config.Config, local *localdb.LocalDB, connMgr *db.Connect
 	quoteHandler := handlers.NewQuoteHandler(quoteService)
 	exportHandler := handlers.NewExportHandler(exportService, configService, projectService)
 	pricelistHandler := handlers.NewPricelistHandler(local)
+	vendorSpecHandler := handlers.NewVendorSpecHandler(local)
+	partnumberBooksHandler := handlers.NewPartnumberBooksHandler(local)
 	syncHandler, err := handlers.NewSyncHandler(local, syncService, connMgr, templatesPath, backgroundSyncInterval)
 	if err != nil {
 		return nil, nil, fmt.Errorf("creating sync handler: %w", err)
@@ -942,6 +942,7 @@ func setupRouter(cfg *config.Config, local *localdb.LocalDB, connMgr *db.Connect
 	router.GET("/configs/:uuid/revisions", webHandler.ConfigRevisions)
 	router.GET("/pricelists", webHandler.Pricelists)
 	router.GET("/pricelists/:id", webHandler.PricelistDetail)
+	router.GET("/partnumber-books", webHandler.PartnumberBooks)

 	// htmx partials
 	partials := router.Group("/partials")
@@ -991,6 +992,13 @@ func setupRouter(cfg *config.Config, local *localdb.LocalDB, connMgr *db.Connect
 			pricelists.GET("/:id/lots", pricelistHandler.GetLotNames)
 		}

+		// Partnumber books (read-only)
+		pnBooks := api.Group("/partnumber-books")
+		{
+			pnBooks.GET("", partnumberBooksHandler.List)
+			pnBooks.GET("/:id", partnumberBooksHandler.GetItems)
+		}
+
 		// Configurations (public - RBAC disabled)
 		configs := api.Group("/configs")
 		{
@@ -1311,6 +1319,12 @@ func setupRouter(cfg *config.Config, local *localdb.LocalDB, connMgr *db.Connect

 			configs.GET("/:uuid/export", exportHandler.ExportConfigCSV)

+			// Vendor spec (BOM) endpoints
+			configs.GET("/:uuid/vendor-spec", vendorSpecHandler.GetVendorSpec)
+			configs.PUT("/:uuid/vendor-spec", vendorSpecHandler.PutVendorSpec)
+			configs.POST("/:uuid/vendor-spec/resolve", vendorSpecHandler.ResolveVendorSpec)
+			configs.POST("/:uuid/vendor-spec/apply", vendorSpecHandler.ApplyVendorSpec)
+
 			configs.PATCH("/:uuid/server-count", func(c *gin.Context) {
 				uuid := c.Param("uuid")
 				var req struct {
@@ -1662,6 +1676,43 @@ func setupRouter(cfg *config.Config, local *localdb.LocalDB, connMgr *db.Connect
 				c.JSON(http.StatusOK, result)
 			})

+			projects.PATCH("/:uuid/configs/reorder", func(c *gin.Context) {
+				var req struct {
+					OrderedUUIDs []string `json:"ordered_uuids"`
+				}
+				if err := c.ShouldBindJSON(&req); err != nil {
+					c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+					return
+				}
+				if len(req.OrderedUUIDs) == 0 {
+					c.JSON(http.StatusBadRequest, gin.H{"error": "ordered_uuids is required"})
+					return
+				}
+
+				configs, err := configService.ReorderProjectConfigurationsNoAuth(c.Param("uuid"), req.OrderedUUIDs)
+				if err != nil {
+					switch {
+					case errors.Is(err, services.ErrProjectNotFound):
+						c.JSON(http.StatusNotFound, gin.H{"error": err.Error()})
+					default:
+						c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+					}
+					return
+				}
+
+				total := 0.0
+				for i := range configs {
+					if configs[i].TotalPrice != nil {
+						total += *configs[i].TotalPrice
+					}
+				}
+				c.JSON(http.StatusOK, gin.H{
+					"project_uuid":   c.Param("uuid"),
+					"configurations": configs,
+					"total":          total,
+				})
+			})
+
 			projects.POST("/:uuid/configs", func(c *gin.Context) {
 				var req services.CreateConfigRequest
 				if err := c.ShouldBindJSON(&req); err != nil {
@@ -1709,6 +1760,8 @@ func setupRouter(cfg *config.Config, local *localdb.LocalDB, connMgr *db.Connect
 			syncAPI.GET("/users-status", syncHandler.GetUsersStatus)
 			syncAPI.POST("/components", syncHandler.SyncComponents)
 			syncAPI.POST("/pricelists", syncHandler.SyncPricelists)
+			syncAPI.POST("/partnumber-books", syncHandler.SyncPartnumberBooks)
+			syncAPI.POST("/partnumber-seen", syncHandler.ReportPartnumberSeen)
 			syncAPI.POST("/all", syncHandler.SyncAll)
 			syncAPI.POST("/push", syncHandler.PushPendingChanges)
 			syncAPI.GET("/pending/count", syncHandler.GetPendingCount)
--- a/cmd/qfs/versioning_api_test.go
+++ b/cmd/qfs/versioning_api_test.go
@@ -77,7 +77,7 @@ func TestConfigurationVersioningAPI(t *testing.T) {
 	if err := json.Unmarshal(rbRec.Body.Bytes(), &rbResp); err != nil {
 		t.Fatalf("unmarshal rollback response: %v", err)
 	}
-	if rbResp.Message == "" || rbResp.CurrentVersion.VersionNo != 3 {
+	if rbResp.Message == "" || rbResp.CurrentVersion.VersionNo != 2 {
 		t.Fatalf("unexpected rollback response: %+v", rbResp)
 	}

--- a/internal/handlers/partnumber_books.go
+++ b/internal/handlers/partnumber_books.go
@@ -0,0 +1,90 @@
+package handlers
+
+import (
+	"net/http"
+	"strconv"
+
+	"git.mchus.pro/mchus/quoteforge/internal/localdb"
+	"git.mchus.pro/mchus/quoteforge/internal/repository"
+	"github.com/gin-gonic/gin"
+)
+
+// PartnumberBooksHandler provides read-only access to local partnumber book snapshots.
+type PartnumberBooksHandler struct {
+	localDB *localdb.LocalDB
+}
+
+func NewPartnumberBooksHandler(localDB *localdb.LocalDB) *PartnumberBooksHandler {
+	return &PartnumberBooksHandler{localDB: localDB}
+}
+
+// List returns all local partnumber book snapshots.
+// GET /api/partnumber-books
+func (h *PartnumberBooksHandler) List(c *gin.Context) {
+	bookRepo := repository.NewPartnumberBookRepository(h.localDB.DB())
+	books, err := bookRepo.ListBooks()
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+
+	type bookSummary struct {
+		ID        uint   `json:"id"`
+		ServerID  int    `json:"server_id"`
+		Version   string `json:"version"`
+		CreatedAt string `json:"created_at"`
+		IsActive  bool   `json:"is_active"`
+		ItemCount int64  `json:"item_count"`
+	}
+
+	summaries := make([]bookSummary, 0, len(books))
+	for _, b := range books {
+		summaries = append(summaries, bookSummary{
+			ID:        b.ID,
+			ServerID:  b.ServerID,
+			Version:   b.Version,
+			CreatedAt: b.CreatedAt.Format("2006-01-02"),
+			IsActive:  b.IsActive,
+			ItemCount: bookRepo.CountBookItems(b.ID),
+		})
+	}
+
+	c.JSON(http.StatusOK, gin.H{
+		"books": summaries,
+		"total": len(summaries),
+	})
+}
+
+// GetItems returns items for a partnumber book by server ID.
+// GET /api/partnumber-books/:id
+func (h *PartnumberBooksHandler) GetItems(c *gin.Context) {
+	idStr := c.Param("id")
+	id, err := strconv.ParseUint(idStr, 10, 64)
+	if err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "invalid book ID"})
+		return
+	}
+
+	bookRepo := repository.NewPartnumberBookRepository(h.localDB.DB())
+
+	// Find local book by server_id
+	var book localdb.LocalPartnumberBook
+	if err := h.localDB.DB().Where("server_id = ?", id).First(&book).Error; err != nil {
+		c.JSON(http.StatusNotFound, gin.H{"error": "partnumber book not found"})
+		return
+	}
+
+	items, err := bookRepo.GetBookItems(book.ID)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{
+		"book_id":   book.ServerID,
+		"version":   book.Version,
+		"is_active": book.IsActive,
+		"items":     items,
+		"total":     len(items),
+	})
+}
--- a/internal/handlers/sync.go
+++ b/internal/handlers/sync.go
@@ -234,6 +234,33 @@ func (h *SyncHandler) SyncPricelists(c *gin.Context) {
 	h.syncService.RecordSyncHeartbeat()
 }

+// SyncPartnumberBooks syncs partnumber book snapshots from MariaDB to local SQLite.
+// POST /api/sync/partnumber-books
+func (h *SyncHandler) SyncPartnumberBooks(c *gin.Context) {
+	if !h.ensureSyncReadiness(c) {
+		return
+	}
+
+	startTime := time.Now()
+	pulled, err := h.syncService.PullPartnumberBooks()
+	if err != nil {
+		slog.Error("partnumber books pull failed", "error", err)
+		c.JSON(http.StatusInternalServerError, gin.H{
+			"success": false,
+			"error":   err.Error(),
+		})
+		return
+	}
+
+	c.JSON(http.StatusOK, SyncResultResponse{
+		Success:  true,
+		Message:  "Partnumber books synced successfully",
+		Synced:   pulled,
+		Duration: time.Since(startTime).String(),
+	})
+	h.syncService.RecordSyncHeartbeat()
+}
+
 // SyncAllResponse represents result of full sync
 type SyncAllResponse struct {
 	Success                bool   `json:"success"`
@@ -643,3 +670,37 @@ func (h *SyncHandler) getReadinessCached(maxAge time.Duration) *sync.SyncReadine
 	h.readinessMu.Unlock()
 	return readiness
 }
+
+// ReportPartnumberSeen pushes unresolved vendor partnumbers to qt_vendor_partnumber_seen on MariaDB.
+// POST /api/sync/partnumber-seen
+func (h *SyncHandler) ReportPartnumberSeen(c *gin.Context) {
+	var body struct {
+		Items []struct {
+			Partnumber  string `json:"partnumber"`
+			Description string `json:"description"`
+			Ignored     bool   `json:"ignored"`
+		} `json:"items"`
+	}
+	if err := c.ShouldBindJSON(&body); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	items := make([]sync.SeenPartnumber, 0, len(body.Items))
+	for _, it := range body.Items {
+		if it.Partnumber != "" {
+			items = append(items, sync.SeenPartnumber{
+				Partnumber:  it.Partnumber,
+				Description: it.Description,
+				Ignored:     it.Ignored,
+			})
+		}
+	}
+
+	if err := h.syncService.PushPartnumberSeen(items); err != nil {
+		c.JSON(http.StatusServiceUnavailable, gin.H{"error": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{"reported": len(items)})
+}
--- a/internal/handlers/vendor_spec.go
+++ b/internal/handlers/vendor_spec.go
@@ -0,0 +1,209 @@
+package handlers
+
+import (
+	"encoding/json"
+	"errors"
+	"net/http"
+	"strings"
+
+	"git.mchus.pro/mchus/quoteforge/internal/localdb"
+	"git.mchus.pro/mchus/quoteforge/internal/repository"
+	"git.mchus.pro/mchus/quoteforge/internal/services"
+	"github.com/gin-gonic/gin"
+)
+
+// VendorSpecHandler handles vendor BOM spec operations for a configuration.
+type VendorSpecHandler struct {
+	localDB *localdb.LocalDB
+}
+
+func NewVendorSpecHandler(localDB *localdb.LocalDB) *VendorSpecHandler {
+	return &VendorSpecHandler{localDB: localDB}
+}
+
+// lookupConfig finds an active configuration by UUID using the standard localDB method.
+func (h *VendorSpecHandler) lookupConfig(uuid string) (*localdb.LocalConfiguration, error) {
+	cfg, err := h.localDB.GetConfigurationByUUID(uuid)
+	if err != nil {
+		return nil, err
+	}
+	if !cfg.IsActive {
+		return nil, errors.New("not active")
+	}
+	return cfg, nil
+}
+
+// GetVendorSpec returns the vendor spec (BOM) for a configuration.
+// GET /api/configs/:uuid/vendor-spec
+func (h *VendorSpecHandler) GetVendorSpec(c *gin.Context) {
+	cfg, err := h.lookupConfig(c.Param("uuid"))
+	if err != nil {
+		c.JSON(http.StatusNotFound, gin.H{"error": "configuration not found"})
+		return
+	}
+
+	spec := cfg.VendorSpec
+	if spec == nil {
+		spec = localdb.VendorSpec{}
+	}
+	c.JSON(http.StatusOK, gin.H{"vendor_spec": spec})
+}
+
+// PutVendorSpec saves (replaces) the vendor spec for a configuration.
+// PUT /api/configs/:uuid/vendor-spec
+func (h *VendorSpecHandler) PutVendorSpec(c *gin.Context) {
+	cfg, err := h.lookupConfig(c.Param("uuid"))
+	if err != nil {
+		c.JSON(http.StatusNotFound, gin.H{"error": "configuration not found"})
+		return
+	}
+
+	var body struct {
+		VendorSpec []localdb.VendorSpecItem `json:"vendor_spec"`
+	}
+	if err := c.ShouldBindJSON(&body); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	for i := range body.VendorSpec {
+		if body.VendorSpec[i].SortOrder == 0 {
+			body.VendorSpec[i].SortOrder = (i + 1) * 10
+		}
+		// Persist canonical LOT mapping only.
+		body.VendorSpec[i].LotMappings = normalizeLotMappings(body.VendorSpec[i].LotMappings)
+		body.VendorSpec[i].ResolvedLotName = ""
+		body.VendorSpec[i].ResolutionSource = ""
+		body.VendorSpec[i].ManualLotSuggestion = ""
+		body.VendorSpec[i].LotQtyPerPN = 0
+		body.VendorSpec[i].LotAllocations = nil
+	}
+
+	spec := localdb.VendorSpec(body.VendorSpec)
+	specJSON, err := json.Marshal(spec)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+	if err := h.localDB.DB().Model(cfg).Update("vendor_spec", string(specJSON)).Error; err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{"vendor_spec": spec})
+}
+
+func normalizeLotMappings(in []localdb.VendorSpecLotMapping) []localdb.VendorSpecLotMapping {
+	if len(in) == 0 {
+		return nil
+	}
+	merged := make(map[string]int, len(in))
+	order := make([]string, 0, len(in))
+	for _, m := range in {
+		lot := strings.TrimSpace(m.LotName)
+		if lot == "" {
+			continue
+		}
+		qty := m.QuantityPerPN
+		if qty < 1 {
+			qty = 1
+		}
+		if _, exists := merged[lot]; !exists {
+			order = append(order, lot)
+		}
+		merged[lot] += qty
+	}
+	out := make([]localdb.VendorSpecLotMapping, 0, len(order))
+	for _, lot := range order {
+		out = append(out, localdb.VendorSpecLotMapping{
+			LotName:       lot,
+			QuantityPerPN: merged[lot],
+		})
+	}
+	if len(out) == 0 {
+		return nil
+	}
+	return out
+}
+
+// ResolveVendorSpec resolves vendor PN → LOT without modifying the cart.
+// POST /api/configs/:uuid/vendor-spec/resolve
+func (h *VendorSpecHandler) ResolveVendorSpec(c *gin.Context) {
+	if _, err := h.lookupConfig(c.Param("uuid")); err != nil {
+		c.JSON(http.StatusNotFound, gin.H{"error": "configuration not found"})
+		return
+	}
+
+	var body struct {
+		VendorSpec []localdb.VendorSpecItem `json:"vendor_spec"`
+	}
+	if err := c.ShouldBindJSON(&body); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	bookRepo := repository.NewPartnumberBookRepository(h.localDB.DB())
+	resolver := services.NewVendorSpecResolver(bookRepo)
+
+	resolved, err := resolver.Resolve(body.VendorSpec)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+
+	book, _ := bookRepo.GetActiveBook()
+	aggregated, err := services.AggregateLOTs(resolved, book, bookRepo)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{
+		"resolved":   resolved,
+		"aggregated": aggregated,
+	})
+}
+
+// ApplyVendorSpec applies the resolved BOM to the cart (Estimate items).
+// POST /api/configs/:uuid/vendor-spec/apply
+func (h *VendorSpecHandler) ApplyVendorSpec(c *gin.Context) {
+	cfg, err := h.lookupConfig(c.Param("uuid"))
+	if err != nil {
+		c.JSON(http.StatusNotFound, gin.H{"error": "configuration not found"})
+		return
+	}
+
+	var body struct {
+		Items []struct {
+			LotName   string  `json:"lot_name"`
+			Quantity  int     `json:"quantity"`
+			UnitPrice float64 `json:"unit_price"`
+		} `json:"items"`
+	}
+	if err := c.ShouldBindJSON(&body); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	newItems := make(localdb.LocalConfigItems, 0, len(body.Items))
+	for _, it := range body.Items {
+		newItems = append(newItems, localdb.LocalConfigItem{
+			LotName:   it.LotName,
+			Quantity:  it.Quantity,
+			UnitPrice: it.UnitPrice,
+		})
+	}
+
+	itemsJSON, err := json.Marshal(newItems)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+
+	if err := h.localDB.DB().Model(cfg).Update("items", string(itemsJSON)).Error; err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{"items": newItems})
+}
--- a/internal/handlers/web.go
+++ b/internal/handlers/web.go
@@ -59,7 +59,7 @@ func NewWebHandler(_ string, componentService *services.ComponentService) (*WebH

 	templates := make(map[string]*template.Template)
 	// Load each page template with base
-	simplePages := []string{"login.html", "configs.html", "projects.html", "project_detail.html", "pricelists.html", "pricelist_detail.html", "config_revisions.html"}
+	simplePages := []string{"login.html", "configs.html", "projects.html", "project_detail.html", "pricelists.html", "pricelist_detail.html", "config_revisions.html", "partnumber_books.html"}
 	for _, page := range simplePages {
 		var tmpl *template.Template
 		var err error
@@ -188,6 +188,10 @@ func (h *WebHandler) PricelistDetail(c *gin.Context) {
 	h.render(c, "pricelist_detail.html", gin.H{"ActivePage": "pricelists"})
 }

+func (h *WebHandler) PartnumberBooks(c *gin.Context) {
+	h.render(c, "partnumber_books.html", gin.H{"ActivePage": "partnumber-books"})
+}
+
 // Partials for htmx

 func (h *WebHandler) ComponentsPartial(c *gin.Context) {
--- a/internal/localdb/converters.go
+++ b/internal/localdb/converters.go
@@ -33,6 +33,7 @@ func ConfigurationToLocal(cfg *models.Configuration) *LocalConfiguration {
 		Article:          cfg.Article,
 		PricelistID:      cfg.PricelistID,
 		OnlyInStock:      cfg.OnlyInStock,
+		Line:             cfg.Line,
 		PriceUpdatedAt:   cfg.PriceUpdatedAt,
 		CreatedAt:        cfg.CreatedAt,
 		UpdatedAt:        time.Now(),
@@ -80,6 +81,7 @@ func LocalToConfiguration(local *LocalConfiguration) *models.Configuration {
 		Article:        local.Article,
 		PricelistID:    local.PricelistID,
 		OnlyInStock:    local.OnlyInStock,
+		Line:           local.Line,
 		PriceUpdatedAt: local.PriceUpdatedAt,
 		CreatedAt:      local.CreatedAt,
 	}
--- a/internal/localdb/local_migrations_test.go
+++ b/internal/localdb/local_migrations_test.go
@@ -253,3 +253,63 @@ func TestRunLocalMigrationsDeduplicatesConfigurationVersionsBySpecAndPrice(t *te
 		t.Fatalf("expected current_version_id to point to kept latest version v3")
 	}
 }
+
+func TestRunLocalMigrationsBackfillsConfigurationLineNo(t *testing.T) {
+	dbPath := filepath.Join(t.TempDir(), "line_no_backfill.db")
+
+	local, err := New(dbPath)
+	if err != nil {
+		t.Fatalf("open localdb: %v", err)
+	}
+	t.Cleanup(func() { _ = local.Close() })
+
+	projectUUID := "project-line"
+	cfg1 := &LocalConfiguration{
+		UUID:             "line-cfg-1",
+		ProjectUUID:      &projectUUID,
+		Name:             "Cfg 1",
+		Items:            LocalConfigItems{},
+		SyncStatus:       "pending",
+		OriginalUsername: "tester",
+		IsActive:         true,
+		CreatedAt:        time.Now().Add(-2 * time.Hour),
+	}
+	cfg2 := &LocalConfiguration{
+		UUID:             "line-cfg-2",
+		ProjectUUID:      &projectUUID,
+		Name:             "Cfg 2",
+		Items:            LocalConfigItems{},
+		SyncStatus:       "pending",
+		OriginalUsername: "tester",
+		IsActive:         true,
+		CreatedAt:        time.Now().Add(-1 * time.Hour),
+	}
+	if err := local.SaveConfiguration(cfg1); err != nil {
+		t.Fatalf("save cfg1: %v", err)
+	}
+	if err := local.SaveConfiguration(cfg2); err != nil {
+		t.Fatalf("save cfg2: %v", err)
+	}
+
+	if err := local.DB().Model(&LocalConfiguration{}).Where("uuid IN ?", []string{cfg1.UUID, cfg2.UUID}).Update("line_no", 0).Error; err != nil {
+		t.Fatalf("reset line_no: %v", err)
+	}
+	if err := local.DB().Where("id = ?", "2026_02_19_local_config_line_no").Delete(&LocalSchemaMigration{}).Error; err != nil {
+		t.Fatalf("delete migration record: %v", err)
+	}
+
+	if err := runLocalMigrations(local.DB()); err != nil {
+		t.Fatalf("rerun local migrations: %v", err)
+	}
+
+	var rows []LocalConfiguration
+	if err := local.DB().Where("uuid IN ?", []string{cfg1.UUID, cfg2.UUID}).Order("created_at ASC").Find(&rows).Error; err != nil {
+		t.Fatalf("load configurations: %v", err)
+	}
+	if len(rows) != 2 {
+		t.Fatalf("expected 2 configurations, got %d", len(rows))
+	}
+	if rows[0].Line != 10 || rows[1].Line != 20 {
+		t.Fatalf("expected line_no [10,20], got [%d,%d]", rows[0].Line, rows[1].Line)
+	}
+}
--- a/internal/localdb/localdb.go
+++ b/internal/localdb/localdb.go
@@ -142,6 +142,8 @@ func New(dbPath string) (*LocalDB, error) {
 		&LocalRemoteMigrationApplied{},
 		&LocalSyncGuardState{},
 		&PendingChange{},
+		&LocalPartnumberBook{},
+		&LocalPartnumberBookItem{},
 	); err != nil {
 		return nil, fmt.Errorf("migrating sqlite database: %w", err)
 	}
@@ -341,7 +343,7 @@ func (l *LocalDB) GetProjectByName(ownerUsername, name string) (*LocalProject, e
 func (l *LocalDB) GetProjectConfigurations(projectUUID string) ([]LocalConfiguration, error) {
 	var configs []LocalConfiguration
 	err := l.db.Where("project_uuid = ? AND is_active = ?", projectUUID, true).
-		Order("created_at DESC").
+		Order(configurationLineOrderClause()).
 		Find(&configs).Error
 	return configs, err
 }
@@ -514,9 +516,54 @@ func (l *LocalDB) BackfillConfigurationProjects(defaultOwner string) error {

 // SaveConfiguration saves a configuration to local SQLite
 func (l *LocalDB) SaveConfiguration(config *LocalConfiguration) error {
+	if config != nil && config.IsActive && config.Line <= 0 {
+		line, err := l.NextConfigurationLine(config.ProjectUUID, config.UUID)
+		if err != nil {
+			return err
+		}
+		config.Line = line
+	}
 	return l.db.Save(config).Error
 }

+func (l *LocalDB) NextConfigurationLine(projectUUID *string, excludeUUID string) (int, error) {
+	return NextConfigurationLineTx(l.db, projectUUID, excludeUUID)
+}
+
+func NextConfigurationLineTx(tx *gorm.DB, projectUUID *string, excludeUUID string) (int, error) {
+	query := tx.Model(&LocalConfiguration{}).
+		Where("is_active = ?", true)
+
+	trimmedExclude := strings.TrimSpace(excludeUUID)
+	if trimmedExclude != "" {
+		query = query.Where("uuid <> ?", trimmedExclude)
+	}
+
+	if projectUUID != nil && strings.TrimSpace(*projectUUID) != "" {
+		query = query.Where("project_uuid = ?", strings.TrimSpace(*projectUUID))
+	} else {
+		query = query.Where("project_uuid IS NULL OR TRIM(project_uuid) = ''")
+	}
+
+	var maxLine int
+	if err := query.Select("COALESCE(MAX(line_no), 0)").Scan(&maxLine).Error; err != nil {
+		return 0, fmt.Errorf("read max line_no: %w", err)
+	}
+	if maxLine < 0 {
+		maxLine = 0
+	}
+
+	next := ((maxLine / 10) + 1) * 10
+	if next < 10 {
+		next = 10
+	}
+	return next, nil
+}
+
+func configurationLineOrderClause() string {
+	return "CASE WHEN COALESCE(local_configurations.line_no, 0) <= 0 THEN 2147483647 ELSE local_configurations.line_no END ASC, local_configurations.created_at DESC, local_configurations.id DESC"
+}
+
 // GetConfigurations returns all local configurations
 func (l *LocalDB) GetConfigurations() ([]LocalConfiguration, error) {
 	var configs []LocalConfiguration
--- a/internal/localdb/migrations.go
+++ b/internal/localdb/migrations.go
@@ -108,6 +108,11 @@ var localMigrations = []localMigration{
 		name: "Deduplicate configuration revisions by spec+price",
 		run:  deduplicateConfigurationVersionsBySpecAndPrice,
 	},
+	{
+		id:   "2026_02_19_local_config_line_no",
+		name: "Add line_no to local_configurations and backfill ordering",
+		run:  addLocalConfigurationLineNo,
+	},
 }

 func runLocalMigrations(db *gorm.DB) error {
@@ -806,3 +811,57 @@ func addLocalConfigurationSupportCode(tx *gorm.DB) error {
 	}
 	return nil
 }
+
+func addLocalConfigurationLineNo(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 ('line_no')
+	`).Scan(&columns).Error; err != nil {
+		return fmt.Errorf("check local_configurations(line_no) existence: %w", err)
+	}
+	if len(columns) == 0 {
+		if err := tx.Exec(`
+			ALTER TABLE local_configurations
+			ADD COLUMN line_no INTEGER
+		`).Error; err != nil {
+			return fmt.Errorf("add local_configurations.line_no: %w", err)
+		}
+		slog.Info("added line_no to local_configurations")
+	}
+
+	if err := tx.Exec(`
+WITH ranked AS (
+	SELECT
+		id,
+		ROW_NUMBER() OVER (
+			PARTITION BY COALESCE(NULLIF(TRIM(project_uuid), ''), '__NO_PROJECT__')
+			ORDER BY created_at ASC, id ASC
+		) AS rn
+	FROM local_configurations
+	WHERE line_no IS NULL OR line_no <= 0
+)
+UPDATE local_configurations
+SET line_no = (
+	SELECT rn * 10
+	FROM ranked
+	WHERE ranked.id = local_configurations.id
+)
+WHERE id IN (SELECT id FROM ranked)
+`).Error; err != nil {
+		return fmt.Errorf("backfill local_configurations.line_no: %w", err)
+	}
+
+	if err := tx.Exec(`
+		CREATE INDEX IF NOT EXISTS idx_local_configurations_project_line_no
+		ON local_configurations(project_uuid, line_no)
+	`).Error; err != nil {
+		return fmt.Errorf("ensure idx_local_configurations_project_line_no: %w", err)
+	}
+
+	return nil
+}
+
--- a/internal/localdb/models.go
+++ b/internal/localdb/models.go
@@ -83,35 +83,37 @@ func (s *LocalStringList) Scan(value interface{}) error {

 // LocalConfiguration stores configurations in local SQLite
 type LocalConfiguration struct {
-	ID               uint                        `gorm:"primaryKey;autoIncrement" json:"id"`
-	UUID             string                      `gorm:"uniqueIndex;not null" json:"uuid"`
-	ServerID         *uint                       `json:"server_id"` // ID on MariaDB server, NULL if local only
-	ProjectUUID      *string                     `gorm:"index" json:"project_uuid,omitempty"`
-	CurrentVersionID *string                     `gorm:"index" json:"current_version_id,omitempty"`
-	IsActive         bool                        `gorm:"default:true;index" json:"is_active"`
-	Name             string                      `gorm:"not null" json:"name"`
-	Items            LocalConfigItems            `gorm:"type:text" json:"items"` // JSON stored as text in SQLite
-	TotalPrice       *float64                    `json:"total_price"`
-	CustomPrice      *float64                    `json:"custom_price"`
-	Notes            string                      `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"`
+	ID                    uint                        `gorm:"primaryKey;autoIncrement" json:"id"`
+	UUID                  string                      `gorm:"uniqueIndex;not null" json:"uuid"`
+	ServerID              *uint                       `json:"server_id"` // ID on MariaDB server, NULL if local only
+	ProjectUUID           *string                     `gorm:"index" json:"project_uuid,omitempty"`
+	CurrentVersionID      *string                     `gorm:"index" json:"current_version_id,omitempty"`
+	IsActive              bool                        `gorm:"default:true;index" json:"is_active"`
+	Name                  string                      `gorm:"not null" json:"name"`
+	Items                 LocalConfigItems            `gorm:"type:text" json:"items"` // JSON stored as text in SQLite
+	TotalPrice            *float64                    `json:"total_price"`
+	CustomPrice           *float64                    `json:"custom_price"`
+	Notes                 string                      `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"`
 	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"`
-	SyncedAt         *time.Time                  `json:"synced_at"`
-	SyncStatus       string                      `gorm:"default:'local'" json:"sync_status"` // 'local', 'synced', 'modified'
-	OriginalUserID   uint                        `json:"original_user_id"`                   // UserID from MariaDB for reference
-	OriginalUsername string                      `gorm:"not null;default:'';index" json:"original_username"`
-	CurrentVersion   *LocalConfigurationVersion  `gorm:"foreignKey:CurrentVersionID;references:ID" json:"current_version,omitempty"`
-	Versions         []LocalConfigurationVersion `gorm:"foreignKey:ConfigurationUUID;references:UUID" json:"versions,omitempty"`
+	VendorSpec             VendorSpec                  `gorm:"type:text" json:"vendor_spec,omitempty"`
+	Line                  int                         `gorm:"column:line_no;index" json:"line"`
+	PriceUpdatedAt        *time.Time                  `gorm:"type:timestamp" json:"price_updated_at,omitempty"`
+	CreatedAt             time.Time                   `json:"created_at"`
+	UpdatedAt             time.Time                   `json:"updated_at"`
+	SyncedAt              *time.Time                  `json:"synced_at"`
+	SyncStatus            string                      `gorm:"default:'local'" json:"sync_status"` // 'local', 'synced', 'modified'
+	OriginalUserID        uint                        `json:"original_user_id"`                   // UserID from MariaDB for reference
+	OriginalUsername      string                      `gorm:"not null;default:'';index" json:"original_username"`
+	CurrentVersion        *LocalConfigurationVersion  `gorm:"foreignKey:CurrentVersionID;references:ID" json:"current_version,omitempty"`
+	Versions              []LocalConfigurationVersion `gorm:"foreignKey:ConfigurationUUID;references:UUID" json:"versions,omitempty"`
 }

 func (LocalConfiguration) TableName() string {
@@ -242,3 +244,85 @@ type PendingChange struct {
 func (PendingChange) TableName() string {
 	return "pending_changes"
 }
+
+// LocalPartnumberBook stores a version snapshot of the PN→LOT mapping book (pull-only from PriceForge)
+type LocalPartnumberBook struct {
+	ID        uint      `gorm:"primaryKey;autoIncrement" json:"id"`
+	ServerID  int       `gorm:"uniqueIndex;not null" json:"server_id"`
+	Version   string    `gorm:"not null" json:"version"`
+	CreatedAt time.Time `gorm:"not null" json:"created_at"`
+	IsActive  bool      `gorm:"not null;default:true" json:"is_active"`
+}
+
+func (LocalPartnumberBook) TableName() string {
+	return "local_partnumber_books"
+}
+
+// LocalPartnumberBookItem stores a single PN→LOT mapping within a book snapshot
+type LocalPartnumberBookItem struct {
+	ID          uint   `gorm:"primaryKey;autoIncrement" json:"id"`
+	BookID      uint   `gorm:"not null;index:idx_local_book_pn,priority:1" json:"book_id"`
+	Partnumber  string `gorm:"not null;index:idx_local_book_pn,priority:2" json:"partnumber"`
+	LotName     string `gorm:"not null" json:"lot_name"`
+	IsPrimaryPN bool   `gorm:"not null;default:false" json:"is_primary_pn"`
+	Description string `json:"description,omitempty"`
+}
+
+func (LocalPartnumberBookItem) TableName() string {
+	return "local_partnumber_book_items"
+}
+
+// VendorSpecItem represents a single row in a vendor BOM specification
+type VendorSpecItem struct {
+	SortOrder           int      `json:"sort_order"`
+	VendorPartnumber    string   `json:"vendor_partnumber"`
+	Quantity            int      `json:"quantity"`
+	Description         string   `json:"description,omitempty"`
+	UnitPrice           *float64 `json:"unit_price,omitempty"`
+	TotalPrice          *float64 `json:"total_price,omitempty"`
+	ResolvedLotName     string   `json:"resolved_lot_name,omitempty"`
+	ResolutionSource    string   `json:"resolution_source,omitempty"` // "book", "manual", "unresolved"
+	ManualLotSuggestion string   `json:"manual_lot_suggestion,omitempty"`
+	LotQtyPerPN         int      `json:"lot_qty_per_pn,omitempty"`
+	LotAllocations      []VendorSpecLotAllocation `json:"lot_allocations,omitempty"`
+	LotMappings         []VendorSpecLotMapping `json:"lot_mappings,omitempty"`
+}
+
+type VendorSpecLotAllocation struct {
+	LotName  string `json:"lot_name"`
+	Quantity int    `json:"quantity"` // quantity of LOT per 1 vendor PN
+}
+
+// VendorSpecLotMapping is the canonical persisted LOT mapping for a vendor PN row.
+// It stores all mapped LOTs (base + bundle) uniformly.
+type VendorSpecLotMapping struct {
+	LotName       string `json:"lot_name"`
+	QuantityPerPN int    `json:"quantity_per_pn"`
+}
+
+// VendorSpec is a JSON-encodable slice of VendorSpecItem
+type VendorSpec []VendorSpecItem
+
+func (v VendorSpec) Value() (driver.Value, error) {
+	if v == nil {
+		return nil, nil
+	}
+	return json.Marshal(v)
+}
+
+func (v *VendorSpec) Scan(value interface{}) error {
+	if value == nil {
+		*v = nil
+		return nil
+	}
+	var bytes []byte
+	switch val := value.(type) {
+	case []byte:
+		bytes = val
+	case string:
+		bytes = []byte(val)
+	default:
+		return errors.New("type assertion failed for VendorSpec")
+	}
+	return json.Unmarshal(bytes, v)
+}
--- a/internal/localdb/snapshots.go
+++ b/internal/localdb/snapshots.go
@@ -28,6 +28,7 @@ func BuildConfigurationSnapshot(localCfg *LocalConfiguration) (string, error) {
 		"article":            localCfg.Article,
 		"pricelist_id":       localCfg.PricelistID,
 		"only_in_stock":      localCfg.OnlyInStock,
+		"line":               localCfg.Line,
 		"price_updated_at":   localCfg.PriceUpdatedAt,
 		"created_at":         localCfg.CreatedAt,
 		"updated_at":         localCfg.UpdatedAt,
@@ -61,6 +62,7 @@ func DecodeConfigurationSnapshot(data string) (*LocalConfiguration, error) {
 		Article          string           `json:"article"`
 		PricelistID      *uint            `json:"pricelist_id"`
 		OnlyInStock      bool             `json:"only_in_stock"`
+		Line             int              `json:"line"`
 		PriceUpdatedAt   *time.Time       `json:"price_updated_at"`
 		OriginalUserID   uint             `json:"original_user_id"`
 		OriginalUsername string           `json:"original_username"`
@@ -90,6 +92,7 @@ func DecodeConfigurationSnapshot(data string) (*LocalConfiguration, error) {
 		Article:          snapshot.Article,
 		PricelistID:      snapshot.PricelistID,
 		OnlyInStock:      snapshot.OnlyInStock,
+		Line:             snapshot.Line,
 		PriceUpdatedAt:   snapshot.PriceUpdatedAt,
 		OriginalUserID:   snapshot.OriginalUserID,
 		OriginalUsername: snapshot.OriginalUsername,
--- a/internal/models/configuration.go
+++ b/internal/models/configuration.go
@@ -61,6 +61,7 @@ type Configuration struct {
 	CompetitorPricelistID *uint       `gorm:"index" json:"competitor_pricelist_id,omitempty"`
 	DisablePriceRefresh   bool        `gorm:"default:false" json:"disable_price_refresh"`
 	OnlyInStock           bool        `gorm:"default:false" json:"only_in_stock"`
+	Line                  int         `gorm:"column:line_no;index" json:"line"`
 	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"`
--- a/internal/repository/configuration.go
+++ b/internal/repository/configuration.go
@@ -1,6 +1,8 @@
 package repository

 import (
+	"strings"
+
 	"git.mchus.pro/mchus/quoteforge/internal/models"
 	"gorm.io/gorm"
 )
@@ -14,7 +16,13 @@ func NewConfigurationRepository(db *gorm.DB) *ConfigurationRepository {
 }

 func (r *ConfigurationRepository) Create(config *models.Configuration) error {
-	return r.db.Create(config).Error
+	if err := r.db.Create(config).Error; err != nil {
+		if isUnknownLineNoColumnError(err) {
+			return r.db.Omit("line_no").Create(config).Error
+		}
+		return err
+	}
+	return nil
 }

 func (r *ConfigurationRepository) GetByID(id uint) (*models.Configuration, error) {
@@ -36,7 +44,21 @@ func (r *ConfigurationRepository) GetByUUID(uuid string) (*models.Configuration,
 }

 func (r *ConfigurationRepository) Update(config *models.Configuration) error {
-	return r.db.Save(config).Error
+	if err := r.db.Save(config).Error; err != nil {
+		if isUnknownLineNoColumnError(err) {
+			return r.db.Omit("line_no").Save(config).Error
+		}
+		return err
+	}
+	return nil
+}
+
+func isUnknownLineNoColumnError(err error) bool {
+	if err == nil {
+		return false
+	}
+	msg := strings.ToLower(err.Error())
+	return strings.Contains(msg, "unknown column 'line_no'") || strings.Contains(msg, "no column named line_no")
 }

 func (r *ConfigurationRepository) Delete(id uint) error {
--- a/internal/repository/partnumber_book.go
+++ b/internal/repository/partnumber_book.go
@@ -0,0 +1,66 @@
+package repository
+
+import (
+	"git.mchus.pro/mchus/quoteforge/internal/localdb"
+	"gorm.io/gorm"
+)
+
+// PartnumberBookRepository provides read-only access to local partnumber book snapshots.
+type PartnumberBookRepository struct {
+	db *gorm.DB
+}
+
+func NewPartnumberBookRepository(db *gorm.DB) *PartnumberBookRepository {
+	return &PartnumberBookRepository{db: db}
+}
+
+// GetActiveBook returns the most recently active local partnumber book.
+func (r *PartnumberBookRepository) GetActiveBook() (*localdb.LocalPartnumberBook, error) {
+	var book localdb.LocalPartnumberBook
+	err := r.db.Where("is_active = 1").Order("created_at DESC, id DESC").First(&book).Error
+	if err != nil {
+		return nil, err
+	}
+	return &book, nil
+}
+
+// GetBookItems returns all items for the given local book ID.
+func (r *PartnumberBookRepository) GetBookItems(bookID uint) ([]localdb.LocalPartnumberBookItem, error) {
+	var items []localdb.LocalPartnumberBookItem
+	err := r.db.Where("book_id = ?", bookID).Find(&items).Error
+	return items, err
+}
+
+// FindLotByPartnumber looks up a partnumber in the active book and returns the matching items.
+func (r *PartnumberBookRepository) FindLotByPartnumber(bookID uint, partnumber string) ([]localdb.LocalPartnumberBookItem, error) {
+	var items []localdb.LocalPartnumberBookItem
+	err := r.db.Where("book_id = ? AND partnumber = ?", bookID, partnumber).Find(&items).Error
+	return items, err
+}
+
+// ListBooks returns all local partnumber books ordered newest first.
+func (r *PartnumberBookRepository) ListBooks() ([]localdb.LocalPartnumberBook, error) {
+	var books []localdb.LocalPartnumberBook
+	err := r.db.Order("created_at DESC, id DESC").Find(&books).Error
+	return books, err
+}
+
+// SaveBook saves a new partnumber book snapshot.
+func (r *PartnumberBookRepository) SaveBook(book *localdb.LocalPartnumberBook) error {
+	return r.db.Save(book).Error
+}
+
+// SaveBookItems bulk-inserts items for a book snapshot.
+func (r *PartnumberBookRepository) SaveBookItems(items []localdb.LocalPartnumberBookItem) error {
+	if len(items) == 0 {
+		return nil
+	}
+	return r.db.CreateInBatches(items, 500).Error
+}
+
+// CountBookItems returns the number of items for a given local book ID.
+func (r *PartnumberBookRepository) CountBookItems(bookID uint) int64 {
+	var count int64
+	r.db.Model(&localdb.LocalPartnumberBookItem{}).Where("book_id = ?", bookID).Count(&count)
+	return count
+}
--- a/internal/services/export.go
+++ b/internal/services/export.go
@@ -6,6 +6,7 @@ import (
 	"fmt"
 	"io"
 	"math"
+	"sort"
 	"strings"
 	"time"

@@ -42,6 +43,7 @@ type ExportItem struct {
 // ConfigExportBlock represents one configuration (server) in the export.
 type ConfigExportBlock struct {
 	Article     string
+	Line        int
 	ServerCount int
 	UnitPrice   float64 // sum of component prices for one server
 	Items       []ExportItem
@@ -92,7 +94,10 @@ func (s *ExportService) ToCSV(w io.Writer, data *ProjectExportData) error {
 	}

 	for i, block := range data.Configs {
-		lineNo := (i + 1) * 10
+		lineNo := block.Line
+		if lineNo <= 0 {
+			lineNo = (i + 1) * 10
+		}

 		serverCount := block.ServerCount
 		if serverCount < 1 {
@@ -104,13 +109,13 @@ func (s *ExportService) ToCSV(w io.Writer, data *ProjectExportData) error {
 		// 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)
+			"",                               // 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)
@@ -124,14 +129,14 @@ func (s *ExportService) ToCSV(w io.Writer, data *ProjectExportData) error {
 		// 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)
+				"",                               // 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)
@@ -174,9 +179,30 @@ func (s *ExportService) ConfigToExportData(cfg *models.Configuration) *ProjectEx

 // ProjectToExportData converts multiple configurations into ProjectExportData.
 func (s *ExportService) ProjectToExportData(configs []models.Configuration) *ProjectExportData {
+	sortedConfigs := make([]models.Configuration, len(configs))
+	copy(sortedConfigs, configs)
+	sort.Slice(sortedConfigs, func(i, j int) bool {
+		leftLine := sortedConfigs[i].Line
+		rightLine := sortedConfigs[j].Line
+
+		if leftLine <= 0 {
+			leftLine = int(^uint(0) >> 1)
+		}
+		if rightLine <= 0 {
+			rightLine = int(^uint(0) >> 1)
+		}
+		if leftLine != rightLine {
+			return leftLine < rightLine
+		}
+		if !sortedConfigs[i].CreatedAt.Equal(sortedConfigs[j].CreatedAt) {
+			return sortedConfigs[i].CreatedAt.After(sortedConfigs[j].CreatedAt)
+		}
+		return sortedConfigs[i].UUID > sortedConfigs[j].UUID
+	})
+
 	blocks := make([]ConfigExportBlock, 0, len(configs))
-	for i := range configs {
-		blocks = append(blocks, s.buildExportBlock(&configs[i]))
+	for i := range sortedConfigs {
+		blocks = append(blocks, s.buildExportBlock(&sortedConfigs[i]))
 	}
 	return &ProjectExportData{
 		Configs:   blocks,
@@ -214,6 +240,7 @@ func (s *ExportService) buildExportBlock(cfg *models.Configuration) ConfigExport

 	return ConfigExportBlock{
 		Article:     cfg.Article,
+		Line:        cfg.Line,
 		ServerCount: serverCount,
 		UnitPrice:   unitTotal,
 		Items:       items,
--- a/internal/services/export_test.go
+++ b/internal/services/export_test.go
@@ -8,6 +8,7 @@ import (
 	"time"

 	"git.mchus.pro/mchus/quoteforge/internal/config"
+	"git.mchus.pro/mchus/quoteforge/internal/models"
 )

 func newTestProjectData(items []ExportItem, article string, serverCount int) *ProjectExportData {
@@ -357,6 +358,51 @@ func TestToCSV_MultipleBlocks(t *testing.T) {
 	}
 }

+func TestProjectToExportData_SortsByLine(t *testing.T) {
+	svc := NewExportService(config.ExportConfig{}, nil, nil)
+
+	configs := []models.Configuration{
+		{
+			UUID:        "cfg-1",
+			Line:        30,
+			Article:     "ART-30",
+			ServerCount: 1,
+			Items:       models.ConfigItems{{LotName: "LOT-30", Quantity: 1, UnitPrice: 300}},
+			CreatedAt:   time.Now().Add(-1 * time.Hour),
+		},
+		{
+			UUID:        "cfg-2",
+			Line:        10,
+			Article:     "ART-10",
+			ServerCount: 1,
+			Items:       models.ConfigItems{{LotName: "LOT-10", Quantity: 1, UnitPrice: 100}},
+			CreatedAt:   time.Now().Add(-2 * time.Hour),
+		},
+		{
+			UUID:        "cfg-3",
+			Line:        20,
+			Article:     "ART-20",
+			ServerCount: 1,
+			Items:       models.ConfigItems{{LotName: "LOT-20", Quantity: 1, UnitPrice: 200}},
+			CreatedAt:   time.Now().Add(-3 * time.Hour),
+		},
+	}
+
+	data := svc.ProjectToExportData(configs)
+	if len(data.Configs) != 3 {
+		t.Fatalf("expected 3 blocks, got %d", len(data.Configs))
+	}
+	if data.Configs[0].Article != "ART-10" || data.Configs[0].Line != 10 {
+		t.Fatalf("first block must be line 10, got article=%s line=%d", data.Configs[0].Article, data.Configs[0].Line)
+	}
+	if data.Configs[1].Article != "ART-20" || data.Configs[1].Line != 20 {
+		t.Fatalf("second block must be line 20, got article=%s line=%d", data.Configs[1].Article, data.Configs[1].Line)
+	}
+	if data.Configs[2].Article != "ART-30" || data.Configs[2].Line != 30 {
+		t.Fatalf("third block must be line 30, got article=%s line=%d", data.Configs[2].Article, data.Configs[2].Line)
+	}
+}
+
 func TestFormatPriceWithSpace(t *testing.T) {
 	tests := []struct {
 		input    float64
--- a/internal/services/local_configuration.go
+++ b/internal/services/local_configuration.go
@@ -107,6 +107,7 @@ func (s *LocalConfigurationService) Create(ownerUsername string, req *CreateConf
 	if err := s.createWithVersion(localCfg, ownerUsername); err != nil {
 		return nil, fmt.Errorf("create configuration with version: %w", err)
 	}
+	cfg.Line = localCfg.Line

 	// Record usage stats
 	_ = s.quoteService.RecordUsage(req.Items)
@@ -325,6 +326,7 @@ func (s *LocalConfigurationService) CloneToProject(configUUID string, ownerUsern
 	if err := s.createWithVersion(localCfg, ownerUsername); err != nil {
 		return nil, fmt.Errorf("clone configuration with version: %w", err)
 	}
+	clone.Line = localCfg.Line

 	return clone, nil
 }
@@ -640,6 +642,7 @@ func (s *LocalConfigurationService) CloneNoAuthToProjectFromVersion(configUUID s
 	if err := s.createWithVersion(localCfg, ownerUsername); err != nil {
 		return nil, fmt.Errorf("clone configuration without auth with version: %w", err)
 	}
+	clone.Line = localCfg.Line

 	return clone, nil
 }
@@ -826,21 +829,13 @@ func (s *LocalConfigurationService) UpdateServerCount(configUUID string, serverC
 			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)
-			}
+		version, err := s.loadVersionForPendingTx(tx, localCfg)
+		if err != nil {
+			return err
 		}

 		cfg = localdb.LocalToConfiguration(localCfg)
-		if err := s.enqueueConfigurationPendingChangeTx(tx, localCfg, "update", &version, ""); err != nil {
+		if err := s.enqueueConfigurationPendingChangeTx(tx, localCfg, "update", version, ""); err != nil {
 			return fmt.Errorf("enqueue server-count pending change: %w", err)
 		}
 		return nil
@@ -852,6 +847,99 @@ func (s *LocalConfigurationService) UpdateServerCount(configUUID string, serverC
 	return cfg, nil
 }

+func (s *LocalConfigurationService) ReorderProjectConfigurationsNoAuth(projectUUID string, orderedUUIDs []string) ([]models.Configuration, error) {
+	projectUUID = strings.TrimSpace(projectUUID)
+	if projectUUID == "" {
+		return nil, ErrProjectNotFound
+	}
+	if _, err := s.localDB.GetProjectByUUID(projectUUID); err != nil {
+		return nil, ErrProjectNotFound
+	}
+	if len(orderedUUIDs) == 0 {
+		return []models.Configuration{}, nil
+	}
+
+	seen := make(map[string]struct{}, len(orderedUUIDs))
+	normalized := make([]string, 0, len(orderedUUIDs))
+	for _, raw := range orderedUUIDs {
+		u := strings.TrimSpace(raw)
+		if u == "" {
+			return nil, fmt.Errorf("ordered_uuids contains empty uuid")
+		}
+		if _, exists := seen[u]; exists {
+			return nil, fmt.Errorf("ordered_uuids contains duplicate uuid: %s", u)
+		}
+		seen[u] = struct{}{}
+		normalized = append(normalized, u)
+	}
+
+	err := s.localDB.DB().Transaction(func(tx *gorm.DB) error {
+		var active []localdb.LocalConfiguration
+		if err := tx.Where("project_uuid = ? AND is_active = ?", projectUUID, true).
+			Find(&active).Error; err != nil {
+			return fmt.Errorf("load project active configurations: %w", err)
+		}
+		if len(active) != len(normalized) {
+			return fmt.Errorf("ordered_uuids count mismatch: expected %d got %d", len(active), len(normalized))
+		}
+
+		byUUID := make(map[string]*localdb.LocalConfiguration, len(active))
+		for i := range active {
+			cfg := active[i]
+			byUUID[cfg.UUID] = &cfg
+		}
+		for _, id := range normalized {
+			if _, ok := byUUID[id]; !ok {
+				return fmt.Errorf("configuration %s not found in project %s", id, projectUUID)
+			}
+		}
+
+		now := time.Now()
+		for idx, id := range normalized {
+			cfg := byUUID[id]
+			newLine := (idx + 1) * 10
+			if cfg.Line == newLine {
+				continue
+			}
+
+			cfg.Line = newLine
+			cfg.UpdatedAt = now
+			cfg.SyncStatus = "pending"
+
+			if err := tx.Save(cfg).Error; err != nil {
+				return fmt.Errorf("save reordered configuration %s: %w", cfg.UUID, err)
+			}
+
+			version, err := s.loadVersionForPendingTx(tx, cfg)
+			if err != nil {
+				return err
+			}
+			if err := s.enqueueConfigurationPendingChangeTx(tx, cfg, "update", version, ""); err != nil {
+				return fmt.Errorf("enqueue reorder pending change for %s: %w", cfg.UUID, err)
+			}
+		}
+		return nil
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	var localConfigs []localdb.LocalConfiguration
+	if err := s.localDB.DB().
+		Preload("CurrentVersion").
+		Where("project_uuid = ? AND is_active = ?", projectUUID, true).
+		Order("CASE WHEN COALESCE(line_no, 0) <= 0 THEN 2147483647 ELSE line_no END ASC, created_at DESC, id DESC").
+		Find(&localConfigs).Error; err != nil {
+		return nil, fmt.Errorf("load reordered configurations: %w", err)
+	}
+
+	result := make([]models.Configuration, 0, len(localConfigs))
+	for i := range localConfigs {
+		result = append(result, *localdb.LocalToConfiguration(&localConfigs[i]))
+	}
+	return result, nil
+}
+
 // ImportFromServer imports configurations from MariaDB to local SQLite cache.
 func (s *LocalConfigurationService) ImportFromServer() (*sync.ConfigImportResult, error) {
 	return s.syncService.ImportConfigurationsToLocal()
@@ -965,6 +1053,11 @@ func (s *LocalConfigurationService) isOwner(cfg *localdb.LocalConfiguration, own

 func (s *LocalConfigurationService) createWithVersion(localCfg *localdb.LocalConfiguration, createdBy string) error {
 	return s.localDB.DB().Transaction(func(tx *gorm.DB) error {
+		if localCfg.IsActive {
+			if err := s.ensureConfigurationLineTx(tx, localCfg); err != nil {
+				return err
+			}
+		}
 		if err := tx.Create(localCfg).Error; err != nil {
 			return fmt.Errorf("create local configuration: %w", err)
 		}
@@ -1021,12 +1114,31 @@ func (s *LocalConfigurationService) saveWithVersionAndPending(localCfg *localdb.
 					return fmt.Errorf("compare revision content: %w", err)
 				}
 				if sameRevisionContent {
-					cfg = localdb.LocalToConfiguration(&locked)
+					if !hasNonRevisionConfigurationChanges(&locked, localCfg) {
+						cfg = localdb.LocalToConfiguration(&locked)
+						return nil
+					}
+					if err := tx.Save(localCfg).Error; err != nil {
+						return fmt.Errorf("save local configuration (no new revision): %w", err)
+					}
+					cfg = localdb.LocalToConfiguration(localCfg)
+					if err := s.enqueueConfigurationPendingChangeTx(tx, localCfg, operation, currentVersion, createdBy); err != nil {
+						return fmt.Errorf("enqueue %s pending change without revision: %w", operation, err)
+					}
+					if err := s.recalculateLocalPricelistUsageTx(tx); err != nil {
+						return fmt.Errorf("recalculate local pricelist usage: %w", err)
+					}
 					return nil
 				}
 			}
 		}

+		if localCfg.IsActive {
+			if err := s.ensureConfigurationLineTx(tx, localCfg); err != nil {
+				return err
+			}
+		}
+
 		if err := tx.Save(localCfg).Error; err != nil {
 			return fmt.Errorf("save local configuration: %w", err)
 		}
@@ -1061,6 +1173,50 @@ func (s *LocalConfigurationService) saveWithVersionAndPending(localCfg *localdb.
 	return cfg, nil
 }

+func hasNonRevisionConfigurationChanges(current *localdb.LocalConfiguration, next *localdb.LocalConfiguration) bool {
+	if current == nil || next == nil {
+		return true
+	}
+	if current.Name != next.Name ||
+		current.Notes != next.Notes ||
+		current.IsTemplate != next.IsTemplate ||
+		current.ServerModel != next.ServerModel ||
+		current.SupportCode != next.SupportCode ||
+		current.Article != next.Article ||
+		current.OnlyInStock != next.OnlyInStock ||
+		current.IsActive != next.IsActive ||
+		current.Line != next.Line {
+		return true
+	}
+	if !equalUintPtr(current.PricelistID, next.PricelistID) ||
+		!equalUintPtr(current.WarehousePricelistID, next.WarehousePricelistID) ||
+		!equalUintPtr(current.CompetitorPricelistID, next.CompetitorPricelistID) ||
+		!equalStringPtr(current.ProjectUUID, next.ProjectUUID) {
+		return true
+	}
+	return false
+}
+
+func equalStringPtr(a, b *string) bool {
+	if a == nil && b == nil {
+		return true
+	}
+	if a == nil || b == nil {
+		return false
+	}
+	return strings.TrimSpace(*a) == strings.TrimSpace(*b)
+}
+
+func equalUintPtr(a, b *uint) bool {
+	if a == nil && b == nil {
+		return true
+	}
+	if a == nil || b == nil {
+		return false
+	}
+	return *a == *b
+}
+
 func (s *LocalConfigurationService) loadCurrentVersionTx(tx *gorm.DB, localCfg *localdb.LocalConfiguration) (*localdb.LocalConfigurationVersion, error) {
 	var version localdb.LocalConfigurationVersion
 	if localCfg.CurrentVersionID != nil && *localCfg.CurrentVersionID != "" {
@@ -1082,6 +1238,76 @@ func (s *LocalConfigurationService) loadCurrentVersionTx(tx *gorm.DB, localCfg *
 	return &version, nil
 }

+func (s *LocalConfigurationService) loadVersionForPendingTx(tx *gorm.DB, localCfg *localdb.LocalConfiguration) (*localdb.LocalConfigurationVersion, error) {
+	if localCfg.CurrentVersionID != nil && *localCfg.CurrentVersionID != "" {
+		var current localdb.LocalConfigurationVersion
+		if err := tx.Where("id = ?", *localCfg.CurrentVersionID).First(&current).Error; err == nil {
+			return &current, nil
+		}
+	}
+
+	var latest localdb.LocalConfigurationVersion
+	if err := tx.Where("configuration_uuid = ?", localCfg.UUID).
+		Order("version_no DESC").
+		First(&latest).Error; err != nil {
+		if !errors.Is(err, gorm.ErrRecordNotFound) {
+			return nil, fmt.Errorf("load version for pending change: %w", err)
+		}
+
+		// Legacy/imported rows may exist without local version history.
+		// Bootstrap the first version so pending sync payloads can reference a version.
+		version, createErr := s.appendVersionTx(tx, localCfg, "bootstrap", "")
+		if createErr != nil {
+			return nil, fmt.Errorf("bootstrap version for pending change: %w", createErr)
+		}
+		if err := tx.Model(&localdb.LocalConfiguration{}).
+			Where("uuid = ?", localCfg.UUID).
+			Update("current_version_id", version.ID).Error; err != nil {
+			return nil, fmt.Errorf("set current version id for bootstrapped pending change: %w", err)
+		}
+		localCfg.CurrentVersionID = &version.ID
+		return version, nil
+	}
+	return &latest, nil
+}
+
+func (s *LocalConfigurationService) ensureConfigurationLineTx(tx *gorm.DB, localCfg *localdb.LocalConfiguration) error {
+	if localCfg == nil || !localCfg.IsActive {
+		return nil
+	}
+
+	needsAssign := localCfg.Line <= 0
+	if !needsAssign {
+		query := tx.Model(&localdb.LocalConfiguration{}).
+			Where("is_active = ? AND line_no = ?", true, localCfg.Line)
+
+		if strings.TrimSpace(localCfg.UUID) != "" {
+			query = query.Where("uuid <> ?", strings.TrimSpace(localCfg.UUID))
+		}
+
+		if localCfg.ProjectUUID != nil && strings.TrimSpace(*localCfg.ProjectUUID) != "" {
+			query = query.Where("project_uuid = ?", strings.TrimSpace(*localCfg.ProjectUUID))
+		} else {
+			query = query.Where("project_uuid IS NULL OR TRIM(project_uuid) = ''")
+		}
+
+		var conflicts int64
+		if err := query.Count(&conflicts).Error; err != nil {
+			return fmt.Errorf("check line_no conflict for configuration %s: %w", localCfg.UUID, err)
+		}
+		needsAssign = conflicts > 0
+	}
+
+	if needsAssign {
+		line, err := localdb.NextConfigurationLineTx(tx, localCfg.ProjectUUID, localCfg.UUID)
+		if err != nil {
+			return fmt.Errorf("assign line_no for configuration %s: %w", localCfg.UUID, err)
+		}
+		localCfg.Line = line
+	}
+	return nil
+}
+
 func (s *LocalConfigurationService) hasSameRevisionContent(localCfg *localdb.LocalConfiguration, currentVersion *localdb.LocalConfigurationVersion) (bool, error) {
 	currentSnapshotCfg, err := s.decodeConfigurationSnapshot(currentVersion.Data)
 	if err != nil {
@@ -1195,6 +1421,9 @@ func (s *LocalConfigurationService) rollbackToVersion(configurationUUID string,
 		current.ServerCount = rollbackData.ServerCount
 		current.PricelistID = rollbackData.PricelistID
 		current.OnlyInStock = rollbackData.OnlyInStock
+		if rollbackData.Line > 0 {
+			current.Line = rollbackData.Line
+		}
 		current.PriceUpdatedAt = rollbackData.PriceUpdatedAt
 		current.UpdatedAt = time.Now()
 		current.SyncStatus = "pending"
--- a/internal/services/local_configuration_versioning_test.go
+++ b/internal/services/local_configuration_versioning_test.go
@@ -137,6 +137,78 @@ func TestUpdateNoAuthSkipsRevisionWhenSpecAndPriceUnchanged(t *testing.T) {
 	}
 }

+func TestReorderProjectConfigurationsDoesNotCreateNewVersions(t *testing.T) {
+	service, local := newLocalConfigServiceForTest(t)
+
+	project := &localdb.LocalProject{
+		UUID:          "project-reorder",
+		OwnerUsername: "tester",
+		Code:          "PRJ-ORDER",
+		Variant:       "",
+		Name:          ptrString("Project Reorder"),
+		IsActive:      true,
+		CreatedAt:     time.Now(),
+		UpdatedAt:     time.Now(),
+		SyncStatus:    "pending",
+	}
+	if err := local.SaveProject(project); err != nil {
+		t.Fatalf("save project: %v", err)
+	}
+
+	first, err := service.Create("tester", &CreateConfigRequest{
+		Name:        "Cfg A",
+		Items:       models.ConfigItems{{LotName: "CPU_A", Quantity: 1, UnitPrice: 100}},
+		ServerCount: 1,
+		ProjectUUID: &project.UUID,
+	})
+	if err != nil {
+		t.Fatalf("create first config: %v", err)
+	}
+	second, err := service.Create("tester", &CreateConfigRequest{
+		Name:        "Cfg B",
+		Items:       models.ConfigItems{{LotName: "CPU_B", Quantity: 1, UnitPrice: 200}},
+		ServerCount: 1,
+		ProjectUUID: &project.UUID,
+	})
+	if err != nil {
+		t.Fatalf("create second config: %v", err)
+	}
+
+	beforeFirst := loadVersions(t, local, first.UUID)
+	beforeSecond := loadVersions(t, local, second.UUID)
+
+	reordered, err := service.ReorderProjectConfigurationsNoAuth(project.UUID, []string{second.UUID, first.UUID})
+	if err != nil {
+		t.Fatalf("reorder configurations: %v", err)
+	}
+	if len(reordered) != 2 {
+		t.Fatalf("expected 2 reordered configs, got %d", len(reordered))
+	}
+	if reordered[0].UUID != second.UUID || reordered[0].Line != 10 {
+		t.Fatalf("expected second config first with line 10, got uuid=%s line=%d", reordered[0].UUID, reordered[0].Line)
+	}
+	if reordered[1].UUID != first.UUID || reordered[1].Line != 20 {
+		t.Fatalf("expected first config second with line 20, got uuid=%s line=%d", reordered[1].UUID, reordered[1].Line)
+	}
+
+	afterFirst := loadVersions(t, local, first.UUID)
+	afterSecond := loadVersions(t, local, second.UUID)
+	if len(afterFirst) != len(beforeFirst) || len(afterSecond) != len(beforeSecond) {
+		t.Fatalf("reorder must not create new versions")
+	}
+
+	var pendingCount int64
+	if err := local.DB().
+		Table("pending_changes").
+		Where("entity_type = ? AND operation = ? AND entity_uuid IN ?", "configuration", "update", []string{first.UUID, second.UUID}).
+		Count(&pendingCount).Error; err != nil {
+		t.Fatalf("count reorder pending changes: %v", err)
+	}
+	if pendingCount < 2 {
+		t.Fatalf("expected at least 2 pending update changes for reorder, got %d", pendingCount)
+	}
+}
+
 func TestAppendOnlyInvariantOldRowsUnchanged(t *testing.T) {
 	service, local := newLocalConfigServiceForTest(t)

--- a/internal/services/project.go
+++ b/internal/services/project.go
@@ -16,10 +16,10 @@ import (
 )

 var (
-	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")
+	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 {
@@ -31,10 +31,10 @@ func NewProjectService(localDB *localdb.LocalDB) *ProjectService {
 }

 type CreateProjectRequest struct {
-	Code       string `json:"code"`
-	Variant    string `json:"variant,omitempty"`
+	Code       string  `json:"code"`
+	Variant    string  `json:"variant,omitempty"`
 	Name       *string `json:"name,omitempty"`
-	TrackerURL string `json:"tracker_url"`
+	TrackerURL string  `json:"tracker_url"`
 }

 type UpdateProjectRequest struct {
@@ -275,8 +275,23 @@ func (s *ProjectService) ListConfigurations(projectUUID, ownerUsername, status s
 		}, nil
 	}

+	query := s.localDB.DB().
+		Preload("CurrentVersion").
+		Where("project_uuid = ?", projectUUID).
+		Order("CASE WHEN COALESCE(line_no, 0) <= 0 THEN 2147483647 ELSE line_no END ASC, created_at DESC, id DESC")
+
+	switch status {
+	case "active", "":
+		query = query.Where("is_active = ?", true)
+	case "archived":
+		query = query.Where("is_active = ?", false)
+	case "all":
+	default:
+		query = query.Where("is_active = ?", true)
+	}
+
 	var localConfigs []localdb.LocalConfiguration
-	if err := s.localDB.DB().Preload("CurrentVersion").Order("created_at DESC").Find(&localConfigs).Error; err != nil {
+	if err := query.Find(&localConfigs).Error; err != nil {
 		return nil, err
 	}

@@ -284,25 +299,6 @@ func (s *ProjectService) ListConfigurations(projectUUID, ownerUsername, status s
 	total := 0.0
 	for i := range localConfigs {
 		localCfg := localConfigs[i]
-		if localCfg.ProjectUUID == nil || *localCfg.ProjectUUID != projectUUID {
-			continue
-		}
-		switch status {
-		case "active", "":
-			if !localCfg.IsActive {
-				continue
-			}
-		case "archived":
-			if localCfg.IsActive {
-				continue
-			}
-		case "all":
-		default:
-			if !localCfg.IsActive {
-				continue
-			}
-		}
-
 		cfg := localdb.LocalToConfiguration(&localCfg)
 		if cfg.TotalPrice != nil {
 			total += *cfg.TotalPrice
--- a/internal/services/sync/partnumber_books.go
+++ b/internal/services/sync/partnumber_books.go
@@ -0,0 +1,127 @@
+package sync
+
+import (
+	"fmt"
+	"log/slog"
+	"time"
+
+	"git.mchus.pro/mchus/quoteforge/internal/localdb"
+	"git.mchus.pro/mchus/quoteforge/internal/repository"
+	"gorm.io/gorm"
+)
+
+// PullPartnumberBooks synchronizes partnumber book snapshots from MariaDB to local SQLite.
+// Append-only for headers; re-pulls items if a book header exists but has 0 items.
+func (s *Service) PullPartnumberBooks() (int, error) {
+	slog.Info("starting partnumber book pull")
+
+	mariaDB, err := s.getDB()
+	if err != nil {
+		return 0, fmt.Errorf("database not available: %w", err)
+	}
+
+	localBookRepo := repository.NewPartnumberBookRepository(s.localDB.DB())
+
+	type serverBook struct {
+		ID        int       `gorm:"column:id"`
+		Version   string    `gorm:"column:version"`
+		CreatedAt time.Time `gorm:"column:created_at"`
+		IsActive  bool      `gorm:"column:is_active"`
+	}
+	var serverBooks []serverBook
+	if err := mariaDB.Raw("SELECT id, version, created_at, is_active FROM qt_partnumber_books ORDER BY created_at DESC, id DESC").Scan(&serverBooks).Error; err != nil {
+		return 0, fmt.Errorf("querying server partnumber books: %w", err)
+	}
+	slog.Info("partnumber books found on server", "count", len(serverBooks))
+
+	pulled := 0
+	for _, sb := range serverBooks {
+		var existing localdb.LocalPartnumberBook
+		err := s.localDB.DB().Where("server_id = ?", sb.ID).First(&existing).Error
+		if err == nil {
+			// Header exists — check whether items were saved
+			localItemCount := localBookRepo.CountBookItems(existing.ID)
+			if localItemCount > 0 {
+				slog.Debug("partnumber book already synced, skipping", "server_id", sb.ID, "version", sb.Version, "items", localItemCount)
+				continue
+			}
+			// Items missing — re-pull them
+			slog.Info("partnumber book header exists but has no items, re-pulling items", "server_id", sb.ID, "version", sb.Version)
+			n, err := pullBookItems(mariaDB, localBookRepo, sb.ID, existing.ID)
+			if err != nil {
+				slog.Error("failed to re-pull items for existing book", "server_id", sb.ID, "error", err)
+			} else {
+				slog.Info("re-pulled items for existing book", "server_id", sb.ID, "version", sb.Version, "items_saved", n)
+				pulled++
+			}
+			continue
+		}
+
+		slog.Info("pulling new partnumber book", "server_id", sb.ID, "version", sb.Version, "is_active", sb.IsActive)
+
+		localBook := &localdb.LocalPartnumberBook{
+			ServerID:  sb.ID,
+			Version:   sb.Version,
+			CreatedAt: sb.CreatedAt,
+			IsActive:  sb.IsActive,
+		}
+		if err := localBookRepo.SaveBook(localBook); err != nil {
+			slog.Error("failed to save local partnumber book", "server_id", sb.ID, "error", err)
+			continue
+		}
+
+		n, err := pullBookItems(mariaDB, localBookRepo, sb.ID, localBook.ID)
+		if err != nil {
+			slog.Error("failed to pull items for new book", "server_id", sb.ID, "error", err)
+			continue
+		}
+
+		slog.Info("partnumber book saved locally", "server_id", sb.ID, "version", sb.Version, "items_saved", n)
+		pulled++
+	}
+
+	slog.Info("partnumber book pull completed", "new_books_pulled", pulled, "total_on_server", len(serverBooks))
+	return pulled, nil
+}
+
+// pullBookItems fetches items for a single book from MariaDB and saves them to SQLite.
+// Returns the number of items saved.
+func pullBookItems(mariaDB *gorm.DB, repo *repository.PartnumberBookRepository, serverBookID int, localBookID uint) (int, error) {
+	type serverItem struct {
+		Partnumber  string `gorm:"column:partnumber"`
+		LotName     string `gorm:"column:lot_name"`
+		IsPrimaryPN bool   `gorm:"column:is_primary_pn"`
+		Description string `gorm:"column:description"`
+	}
+	// description column may not exist yet on older server schemas — query without it first,
+	// then retry with it to populate descriptions if available.
+	var serverItems []serverItem
+	err := mariaDB.Raw("SELECT partnumber, lot_name, is_primary_pn, description FROM qt_partnumber_book_items WHERE book_id = ?", serverBookID).Scan(&serverItems).Error
+	if err != nil {
+		slog.Warn("description column not available on server, retrying without it", "server_book_id", serverBookID, "error", err)
+		if err2 := mariaDB.Raw("SELECT partnumber, lot_name, is_primary_pn FROM qt_partnumber_book_items WHERE book_id = ?", serverBookID).Scan(&serverItems).Error; err2 != nil {
+			return 0, fmt.Errorf("querying items from server: %w", err2)
+		}
+	}
+	slog.Info("partnumber book items fetched from server", "server_book_id", serverBookID, "count", len(serverItems))
+
+	if len(serverItems) == 0 {
+		slog.Warn("server returned 0 items for book — check qt_partnumber_book_items on server", "server_book_id", serverBookID)
+		return 0, nil
+	}
+
+	localItems := make([]localdb.LocalPartnumberBookItem, 0, len(serverItems))
+	for _, si := range serverItems {
+		localItems = append(localItems, localdb.LocalPartnumberBookItem{
+			BookID:      localBookID,
+			Partnumber:  si.Partnumber,
+			LotName:     si.LotName,
+			IsPrimaryPN: si.IsPrimaryPN,
+			Description: si.Description,
+		})
+	}
+	if err := repo.SaveBookItems(localItems); err != nil {
+		return 0, fmt.Errorf("saving items to local db: %w", err)
+	}
+	return len(localItems), nil
+}
--- a/internal/services/sync/partnumber_seen.go
+++ b/internal/services/sync/partnumber_seen.go
@@ -0,0 +1,51 @@
+package sync
+
+import (
+	"fmt"
+	"log/slog"
+	"time"
+)
+
+// SeenPartnumber represents an unresolved vendor partnumber to report.
+type SeenPartnumber struct {
+	Partnumber  string
+	Description string
+	Ignored     bool
+}
+
+// PushPartnumberSeen inserts unresolved vendor partnumbers into qt_vendor_partnumber_seen on MariaDB.
+// Uses INSERT ... ON DUPLICATE KEY UPDATE so existing rows are updated (last_seen_at) without error.
+func (s *Service) PushPartnumberSeen(items []SeenPartnumber) error {
+	if len(items) == 0 {
+		return nil
+	}
+
+	mariaDB, err := s.getDB()
+	if err != nil {
+		return fmt.Errorf("database not available: %w", err)
+	}
+
+	now := time.Now().UTC()
+	for _, item := range items {
+		if item.Partnumber == "" {
+			continue
+		}
+		err := mariaDB.Exec(`
+			INSERT INTO qt_vendor_partnumber_seen
+				(source_type, vendor, partnumber, description, is_ignored, last_seen_at)
+			VALUES
+				('manual', '', ?, ?, ?, ?)
+			ON DUPLICATE KEY UPDATE
+				last_seen_at = VALUES(last_seen_at),
+				is_ignored   = VALUES(is_ignored),
+				description  = COALESCE(NULLIF(VALUES(description), ''), description)
+		`, item.Partnumber, item.Description, item.Ignored, now).Error
+		if err != nil {
+			slog.Error("failed to upsert partnumber_seen", "partnumber", item.Partnumber, "error", err)
+			// Continue with remaining items
+		}
+	}
+
+	slog.Info("partnumber_seen pushed to server", "count", len(items))
+	return nil
+}
--- a/internal/services/sync/service.go
+++ b/internal/services/sync/service.go
@@ -145,6 +145,12 @@ func (s *Service) ImportConfigurationsToLocal() (*ConfigImportResult, error) {

 			if existing != nil && err == nil {
 				localCfg.ID = existing.ID
+				if localCfg.Line <= 0 && existing.Line > 0 {
+					localCfg.Line = existing.Line
+				}
+				// vendor_spec is local-only for BOM tab and is not stored on server.
+				// Preserve it during server pull updates.
+				localCfg.VendorSpec = existing.VendorSpec
 				result.Updated++
 			} else {
 				result.Imported++
--- a/internal/services/sync/service_projects_push_test.go
+++ b/internal/services/sync/service_projects_push_test.go
@@ -250,6 +250,135 @@ func TestPushPendingChangesCreateIsIdempotent(t *testing.T) {
 	}
 }

+func TestPushPendingChangesConfigurationPushesLine(t *testing.T) {
+	local := newLocalDBForSyncTest(t)
+	serverDB := newServerDBForSyncTest(t)
+
+	localSync := syncsvc.NewService(nil, local)
+	configService := services.NewLocalConfigurationService(local, localSync, &services.QuoteService{}, func() bool { return false })
+	pushService := syncsvc.NewServiceWithDB(serverDB, local)
+
+	created, err := configService.Create("tester", &services.CreateConfigRequest{
+		Name:        "Cfg Line Push",
+		Items:       models.ConfigItems{{LotName: "CPU_LINE", Quantity: 1, UnitPrice: 1000}},
+		ServerCount: 1,
+	})
+	if err != nil {
+		t.Fatalf("create config: %v", err)
+	}
+	if created.Line != 10 {
+		t.Fatalf("expected local create line=10, got %d", created.Line)
+	}
+
+	if _, err := pushService.PushPendingChanges(); err != nil {
+		t.Fatalf("push pending changes: %v", err)
+	}
+
+	var serverCfg models.Configuration
+	if err := serverDB.Where("uuid = ?", created.UUID).First(&serverCfg).Error; err != nil {
+		t.Fatalf("load server config: %v", err)
+	}
+	if serverCfg.Line != 10 {
+		t.Fatalf("expected server line=10 after push, got %d", serverCfg.Line)
+	}
+}
+
+func TestImportConfigurationsToLocalPullsLine(t *testing.T) {
+	local := newLocalDBForSyncTest(t)
+	serverDB := newServerDBForSyncTest(t)
+
+	cfg := models.Configuration{
+		UUID:          "server-line-config",
+		OwnerUsername: "tester",
+		Name:          "Cfg Line Pull",
+		Items:         models.ConfigItems{{LotName: "CPU_PULL", Quantity: 1, UnitPrice: 900}},
+		ServerCount:   1,
+		Line:          40,
+	}
+	total := cfg.Items.Total()
+	cfg.TotalPrice = &total
+	if err := serverDB.Create(&cfg).Error; err != nil {
+		t.Fatalf("seed server config: %v", err)
+	}
+
+	svc := syncsvc.NewServiceWithDB(serverDB, local)
+	if _, err := svc.ImportConfigurationsToLocal(); err != nil {
+		t.Fatalf("import configurations to local: %v", err)
+	}
+
+	localCfg, err := local.GetConfigurationByUUID(cfg.UUID)
+	if err != nil {
+		t.Fatalf("load local config: %v", err)
+	}
+	if localCfg.Line != 40 {
+		t.Fatalf("expected imported line=40, got %d", localCfg.Line)
+	}
+}
+
+func TestImportConfigurationsToLocalPreservesLocalVendorSpec(t *testing.T) {
+	local := newLocalDBForSyncTest(t)
+	serverDB := newServerDBForSyncTest(t)
+
+	cfg := models.Configuration{
+		UUID:          "server-vendorspec-config",
+		OwnerUsername: "tester",
+		Name:          "Cfg VendorSpec Pull",
+		Items:         models.ConfigItems{{LotName: "CPU_PULL", Quantity: 1, UnitPrice: 900}},
+		ServerCount:   1,
+		Line:          50,
+	}
+	total := cfg.Items.Total()
+	cfg.TotalPrice = &total
+	if err := serverDB.Create(&cfg).Error; err != nil {
+		t.Fatalf("seed server config: %v", err)
+	}
+
+	localSpec := localdb.VendorSpec{
+		{
+			SortOrder:        10,
+			VendorPartnumber: "GPU-NVHGX-H200-8141",
+			Quantity:         1,
+			Description:      "NVIDIA HGX Delta-Next GPU Baseboard",
+			LotMappings: []localdb.VendorSpecLotMapping{
+				{LotName: "GPU_NV_H200_141GB_SXM_(HGX)", QuantityPerPN: 8},
+			},
+		},
+	}
+	if err := local.SaveConfiguration(&localdb.LocalConfiguration{
+		UUID:             cfg.UUID,
+		OriginalUsername: "tester",
+		Name:             "Local cfg",
+		Items:            localdb.LocalConfigItems{{LotName: "CPU_PULL", Quantity: 1, UnitPrice: 900}},
+		IsActive:         true,
+		SyncStatus:       "synced",
+		Line:             50,
+		VendorSpec:       localSpec,
+		CreatedAt:        time.Now().Add(-30 * time.Minute),
+		UpdatedAt:        time.Now().Add(-30 * time.Minute),
+	}); err != nil {
+		t.Fatalf("seed local configuration: %v", err)
+	}
+
+	svc := syncsvc.NewServiceWithDB(serverDB, local)
+	if _, err := svc.ImportConfigurationsToLocal(); err != nil {
+		t.Fatalf("import configurations to local: %v", err)
+	}
+
+	localCfg, err := local.GetConfigurationByUUID(cfg.UUID)
+	if err != nil {
+		t.Fatalf("load local config: %v", err)
+	}
+	if len(localCfg.VendorSpec) != 1 {
+		t.Fatalf("expected local vendor_spec preserved, got %d rows", len(localCfg.VendorSpec))
+	}
+	if localCfg.VendorSpec[0].VendorPartnumber != "GPU-NVHGX-H200-8141" {
+		t.Fatalf("unexpected vendor_partnumber after import: %q", localCfg.VendorSpec[0].VendorPartnumber)
+	}
+	if len(localCfg.VendorSpec[0].LotMappings) != 1 || localCfg.VendorSpec[0].LotMappings[0].LotName != "GPU_NV_H200_141GB_SXM_(HGX)" {
+		t.Fatalf("unexpected lot mappings after import: %+v", localCfg.VendorSpec[0].LotMappings)
+	}
+}
+
 func TestPushPendingChangesCreateThenUpdateBeforeFirstPush(t *testing.T) {
 	local := newLocalDBForSyncTest(t)
 	serverDB := newServerDBForSyncTest(t)
@@ -361,6 +490,7 @@ CREATE TABLE qt_configurations (
 	competitor_pricelist_id INTEGER NULL,
 	disable_price_refresh INTEGER NOT NULL DEFAULT 0,
 	only_in_stock INTEGER NOT NULL DEFAULT 0,
+	line_no INTEGER NULL,
 	price_updated_at DATETIME NULL,
 	created_at DATETIME
 );`).Error; err != nil {
--- a/internal/services/vendor_spec_resolver.go
+++ b/internal/services/vendor_spec_resolver.go
@@ -0,0 +1,129 @@
+package services
+
+import (
+	"git.mchus.pro/mchus/quoteforge/internal/localdb"
+	"git.mchus.pro/mchus/quoteforge/internal/repository"
+)
+
+// ResolvedBOMRow is the result of resolving a single vendor BOM row.
+type ResolvedBOMRow struct {
+	localdb.VendorSpecItem
+	// ResolutionSource already on VendorSpecItem: "book", "manual_suggestion", "unresolved"
+}
+
+// AggregatedLOT represents a LOT with its aggregated quantity from the BOM.
+type AggregatedLOT struct {
+	LotName  string
+	Quantity int
+}
+
+// VendorSpecResolver resolves vendor BOM rows to LOT names using the active partnumber book.
+type VendorSpecResolver struct {
+	bookRepo *repository.PartnumberBookRepository
+}
+
+func NewVendorSpecResolver(bookRepo *repository.PartnumberBookRepository) *VendorSpecResolver {
+	return &VendorSpecResolver{bookRepo: bookRepo}
+}
+
+// Resolve resolves each vendor spec item's lot name using the 3-step algorithm.
+// It returns the resolved items. Manual lot suggestions from the input are preserved as pre-fill.
+func (r *VendorSpecResolver) Resolve(items []localdb.VendorSpecItem) ([]localdb.VendorSpecItem, error) {
+	// Step 1: Get the active book
+	book, err := r.bookRepo.GetActiveBook()
+	if err != nil {
+		// No book available — mark all as unresolved
+		for i := range items {
+			if items[i].ResolvedLotName == "" {
+				items[i].ResolutionSource = "unresolved"
+			}
+		}
+		return items, nil
+	}
+
+	for i, item := range items {
+		pn := item.VendorPartnumber
+
+		// Step 1: Look up in active book
+		matches, err := r.bookRepo.FindLotByPartnumber(book.ID, pn)
+		if err == nil && len(matches) > 0 {
+			items[i].ResolvedLotName = matches[0].LotName
+			items[i].ResolutionSource = "book"
+			continue
+		}
+
+		// Step 2: Pre-fill from manual_lot_suggestion if provided
+		if item.ManualLotSuggestion != "" {
+			items[i].ResolvedLotName = item.ManualLotSuggestion
+			items[i].ResolutionSource = "manual_suggestion"
+			continue
+		}
+
+		// Step 3: Unresolved
+		items[i].ResolvedLotName = ""
+		items[i].ResolutionSource = "unresolved"
+	}
+
+	return items, nil
+}
+
+// AggregateLOTs applies the qty-logic to compute per-LOT quantities from the resolved BOM.
+// qty(lot) = SUM(qty of primary PN rows for this lot) if any primary PN exists, else 1.
+func AggregateLOTs(items []localdb.VendorSpecItem, book *localdb.LocalPartnumberBook, bookRepo *repository.PartnumberBookRepository) ([]AggregatedLOT, error) {
+	// Gather all unique lot names that resolved
+	lotPrimary := make(map[string]int)     // lot_name → sum of primary PN quantities
+	lotAny := make(map[string]bool)        // lot_name → seen at least once (non-primary)
+	lotHasPrimary := make(map[string]bool) // lot_name → has at least one primary PN in spec
+
+	if book != nil {
+		for _, item := range items {
+			if item.ResolvedLotName == "" {
+				continue
+			}
+			lot := item.ResolvedLotName
+			pn := item.VendorPartnumber
+
+			// Find if this pn is primary for its lot
+			matches, err := bookRepo.FindLotByPartnumber(book.ID, pn)
+			if err != nil || len(matches) == 0 {
+				// manual/unresolved — treat as non-primary
+				lotAny[lot] = true
+				continue
+			}
+			for _, m := range matches {
+				if m.LotName == lot {
+					if m.IsPrimaryPN {
+						lotPrimary[lot] += item.Quantity
+						lotHasPrimary[lot] = true
+					} else {
+						lotAny[lot] = true
+					}
+				}
+			}
+		}
+	} else {
+		// No book: all resolved rows contribute qty=1 per lot
+		for _, item := range items {
+			if item.ResolvedLotName != "" {
+				lotAny[item.ResolvedLotName] = true
+			}
+		}
+	}
+
+	// Build aggregated list
+	seen := make(map[string]bool)
+	var result []AggregatedLOT
+	for _, item := range items {
+		lot := item.ResolvedLotName
+		if lot == "" || seen[lot] {
+			continue
+		}
+		seen[lot] = true
+		qty := 1
+		if lotHasPrimary[lot] {
+			qty = lotPrimary[lot]
+		}
+		result = append(result, AggregatedLOT{LotName: lot, Quantity: qty})
+	}
+	return result, nil
+}
--- a/migrations/028_add_line_no_to_configurations.sql
+++ b/migrations/028_add_line_no_to_configurations.sql
@@ -0,0 +1,18 @@
+ALTER TABLE qt_configurations
+    ADD COLUMN IF NOT EXISTS line_no INT NULL AFTER only_in_stock;
+
+UPDATE qt_configurations q
+JOIN (
+    SELECT
+        id,
+        ROW_NUMBER() OVER (
+            PARTITION BY COALESCE(NULLIF(TRIM(project_uuid), ''), '__NO_PROJECT__')
+            ORDER BY created_at ASC, id ASC
+        ) AS rn
+    FROM qt_configurations
+    WHERE line_no IS NULL OR line_no <= 0
+) ranked ON ranked.id = q.id
+SET q.line_no = ranked.rn * 10;
+
+ALTER TABLE qt_configurations
+    ADD INDEX IF NOT EXISTS idx_qt_configurations_project_line_no (project_uuid, line_no);
--- a/package-lock.json
+++ b/package-lock.json
@@ -0,0 +1,6 @@
+{
+  "name": "QuoteForge",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {}
+}
--- a/package.json
+++ b/package.json
@@ -0,0 +1 @@
+{}
--- a/web/templates/base.html
+++ b/web/templates/base.html
@@ -21,6 +21,7 @@
                    <div class="hidden md:flex space-x-4">
                        <a href="/projects" class="text-gray-600 hover:text-gray-900 px-3 py-2 text-sm">Мои проекты</a>
                        <a href="/pricelists" class="text-gray-600 hover:text-gray-900 px-3 py-2 text-sm">Прайслисты</a>
+                        <a href="/partnumber-books" class="text-gray-600 hover:text-gray-900 px-3 py-2 text-sm">Партномера</a>
                        <a href="/setup" class="text-gray-600 hover:text-gray-900 px-3 py-2 text-sm">Настройки</a>
                    </div>
                </div>
--- a/web/templates/index.html
+++ b/web/templates/index.html
--- a/web/templates/partnumber_books.html
+++ b/web/templates/partnumber_books.html
@@ -0,0 +1,256 @@
+{{define "title"}}QuoteForge - Партномера{{end}}
+
+{{define "content"}}
+<div class="space-y-4">
+    <h1 class="text-2xl font-bold text-gray-900">Партномера</h1>
+
+    <!-- Summary cards -->
+    <div id="summary-cards" class="grid grid-cols-2 md:grid-cols-4 gap-4 hidden">
+        <div class="bg-white rounded-lg shadow p-4">
+            <div class="text-xs text-gray-500 mb-1">Активный лист</div>
+            <div id="card-version" class="font-mono font-semibold text-gray-800 text-sm truncate">—</div>
+            <div id="card-date" class="text-xs text-gray-400 mt-0.5">—</div>
+        </div>
+        <div class="bg-white rounded-lg shadow p-4">
+            <div class="text-xs text-gray-500 mb-1">Уникальных LOT</div>
+            <div id="card-lots" class="text-2xl font-bold text-blue-600">—</div>
+        </div>
+        <div class="bg-white rounded-lg shadow p-4">
+            <div class="text-xs text-gray-500 mb-1">Всего PN</div>
+            <div id="card-pn-total" class="text-2xl font-bold text-gray-800">—</div>
+        </div>
+        <div class="bg-white rounded-lg shadow p-4">
+            <div class="text-xs text-gray-500 mb-1">Primary PN</div>
+            <div id="card-pn-primary" class="text-2xl font-bold text-green-600">—</div>
+        </div>
+    </div>
+
+    <div id="summary-empty" class="hidden bg-yellow-50 border border-yellow-200 rounded-lg p-4 text-sm text-yellow-800">
+        Нет активного листа сопоставлений. Нажмите «Синхронизировать» для загрузки с сервера.
+    </div>
+
+    <!-- Active book items with search -->
+    <div id="active-book-section" class="hidden bg-white rounded-lg shadow overflow-hidden">
+        <div class="px-4 py-3 border-b flex items-center justify-between gap-3">
+            <span class="font-semibold text-gray-800 whitespace-nowrap">Сопоставления активного листа</span>
+            <input type="text" id="pn-search" placeholder="Поиск по PN или LOT..."
+                   class="flex-1 max-w-xs px-3 py-1.5 border rounded text-sm focus:ring-2 focus:ring-blue-400 focus:outline-none"
+                   oninput="filterItems(this.value)">
+            <span id="pn-count" class="text-xs text-gray-400 whitespace-nowrap"></span>
+        </div>
+        <div class="overflow-x-auto">
+            <table class="w-full text-sm">
+                <thead class="bg-gray-50 text-gray-600 sticky top-0">
+                    <tr>
+                        <th class="px-4 py-2 text-left">Partnumber</th>
+                        <th class="px-4 py-2 text-left">LOT</th>
+                        <th class="px-4 py-2 text-center w-24">Primary</th>
+                        <th class="px-4 py-2 text-left">Описание</th>
+                    </tr>
+                </thead>
+                <tbody id="active-items-body"></tbody>
+            </table>
+        </div>
+    </div>
+
+    <!-- All books list (collapsed by default) -->
+    <div class="bg-white rounded-lg shadow overflow-hidden">
+        <!-- Header row — always visible -->
+        <div class="px-4 py-3 flex items-center justify-between">
+            <button onclick="toggleBooksSection()" class="flex items-center gap-2 text-sm font-semibold text-gray-800 hover:text-gray-600 select-none">
+                <svg id="books-chevron" class="w-4 h-4 text-gray-400 transition-transform duration-150" fill="none" stroke="currentColor" stroke-width="2" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" d="M9 5l7 7-7 7"/></svg>
+                Снимки сопоставлений (Partnumber Books)
+            </button>
+            <button onclick="syncPartnumberBooks()" class="px-4 py-2 bg-orange-500 text-white rounded hover:bg-orange-600 text-sm font-medium">
+                Синхронизировать
+            </button>
+        </div>
+        <!-- Collapsible body -->
+        <div id="books-section-body" class="hidden border-t">
+            <div id="books-list-loading" class="p-6 text-center text-gray-400 text-sm">Загрузка...</div>
+            <table id="books-table" class="w-full text-sm hidden">
+                <thead class="bg-gray-50 text-gray-600">
+                    <tr>
+                        <th class="px-4 py-2 text-left">Версия</th>
+                        <th class="px-4 py-2 text-left">Дата</th>
+                        <th class="px-4 py-2 text-right">Позиций</th>
+                        <th class="px-4 py-2 text-center">Статус</th>
+                    </tr>
+                </thead>
+                <tbody id="books-table-body"></tbody>
+            </table>
+            <div id="books-empty" class="hidden p-6 text-center text-gray-400 text-sm">
+                Нет загруженных снимков.
+            </div>
+            <!-- Pagination -->
+            <div id="books-pagination" class="hidden px-4 py-3 border-t flex items-center justify-between text-sm text-gray-600">
+                <span id="books-page-info"></span>
+                <div class="flex gap-2">
+                    <button id="books-prev" onclick="changeBooksPage(-1)" class="px-3 py-1 rounded border hover:bg-gray-50 disabled:opacity-40 disabled:cursor-not-allowed">← Назад</button>
+                    <button id="books-next" onclick="changeBooksPage(1)"  class="px-3 py-1 rounded border hover:bg-gray-50 disabled:opacity-40 disabled:cursor-not-allowed">Вперёд →</button>
+                </div>
+            </div>
+        </div>
+    </div>
+</div>
+
+
+<script>
+let allItems = [];
+let allBooks = [];
+let booksPage = 1;
+const BOOKS_PER_PAGE = 10;
+
+function toggleBooksSection() {
+    const body = document.getElementById('books-section-body');
+    const chevron = document.getElementById('books-chevron');
+    const collapsed = body.classList.toggle('hidden');
+    chevron.style.transform = collapsed ? '' : 'rotate(90deg)';
+}
+
+async function loadBooks() {
+    let resp, data;
+    try {
+        resp = await fetch('/api/partnumber-books');
+        data = await resp.json();
+    } catch (e) {
+        document.getElementById('books-list-loading').classList.add('hidden');
+        document.getElementById('books-empty').classList.remove('hidden');
+        return;
+    }
+
+    allBooks = data.books || [];
+    document.getElementById('books-list-loading').classList.add('hidden');
+
+    if (!allBooks.length) {
+        document.getElementById('books-empty').classList.remove('hidden');
+        document.getElementById('summary-empty').classList.remove('hidden');
+        return;
+    }
+
+    booksPage = 1;
+    renderBooksPage();
+
+    const active = allBooks.find(b => b.is_active) || allBooks[0];
+    await loadActiveBookItems(active);
+}
+
+function renderBooksPage() {
+    const total = allBooks.length;
+    const totalPages = Math.ceil(total / BOOKS_PER_PAGE);
+    const start = (booksPage - 1) * BOOKS_PER_PAGE;
+    const pageBooks = allBooks.slice(start, start + BOOKS_PER_PAGE);
+
+    const tbody = document.getElementById('books-table-body');
+    tbody.innerHTML = '';
+    pageBooks.forEach(b => {
+        const tr = document.createElement('tr');
+        tr.className = 'border-b hover:bg-gray-50';
+        tr.innerHTML = `
+            <td class="px-4 py-2 font-mono text-xs">${b.version}</td>
+            <td class="px-4 py-2 text-gray-500 text-xs">${b.created_at}</td>
+            <td class="px-4 py-2 text-right text-xs">${b.item_count}</td>
+            <td class="px-4 py-2 text-center">
+                ${b.is_active
+                    ? '<span class="px-2 py-0.5 bg-green-100 text-green-700 rounded text-xs">Активный</span>'
+                    : '<span class="px-2 py-0.5 bg-gray-100 text-gray-500 rounded text-xs">Архив</span>'}
+            </td>
+        `;
+        tbody.appendChild(tr);
+    });
+    document.getElementById('books-table').classList.remove('hidden');
+
+    // Pagination controls
+    if (total > BOOKS_PER_PAGE) {
+        document.getElementById('books-pagination').classList.remove('hidden');
+        document.getElementById('books-page-info').textContent =
+            `Снимки ${start + 1}–${Math.min(start + BOOKS_PER_PAGE, total)} из ${total}`;
+        document.getElementById('books-prev').disabled = booksPage === 1;
+        document.getElementById('books-next').disabled = booksPage === totalPages;
+    } else {
+        document.getElementById('books-pagination').classList.add('hidden');
+    }
+}
+
+function changeBooksPage(delta) {
+    const totalPages = Math.ceil(allBooks.length / BOOKS_PER_PAGE);
+    booksPage = Math.max(1, Math.min(totalPages, booksPage + delta));
+    renderBooksPage();
+}
+
+async function loadActiveBookItems(book) {
+    let resp, data;
+    try {
+        resp = await fetch(`/api/partnumber-books/${book.server_id}`);
+        data = await resp.json();
+    } catch (e) {
+        return;
+    }
+    if (!resp.ok) return;
+
+    allItems = data.items || [];
+
+    const lots = new Set(allItems.map(i => i.lot_name));
+    const primaryCount = allItems.filter(i => i.is_primary_pn).length;
+
+    document.getElementById('card-version').textContent = book.version;
+    document.getElementById('card-date').textContent = book.created_at;
+    document.getElementById('card-lots').textContent = lots.size;
+    document.getElementById('card-pn-total').textContent = allItems.length;
+    document.getElementById('card-pn-primary').textContent = primaryCount;
+    document.getElementById('summary-cards').classList.remove('hidden');
+    document.getElementById('active-book-section').classList.remove('hidden');
+
+    renderItems(allItems);
+}
+
+function renderItems(items) {
+    const tbody = document.getElementById('active-items-body');
+    tbody.innerHTML = '';
+    items.forEach(item => {
+        const tr = document.createElement('tr');
+        tr.className = 'border-b hover:bg-gray-50';
+        tr.innerHTML = `
+            <td class="px-4 py-1.5 font-mono text-xs">${item.partnumber}</td>
+            <td class="px-4 py-1.5 text-xs font-medium text-blue-700">${item.lot_name}</td>
+            <td class="px-4 py-1.5 text-center text-green-600 text-xs">${item.is_primary_pn ? '✓' : ''}</td>
+            <td class="px-4 py-1.5 text-xs text-gray-500">${item.description || ''}</td>
+        `;
+        tbody.appendChild(tr);
+    });
+    document.getElementById('pn-count').textContent = `${items.length} из ${allItems.length}`;
+}
+
+function filterItems(query) {
+    const q = query.trim().toLowerCase();
+    if (!q) { renderItems(allItems); return; }
+    renderItems(allItems.filter(i =>
+        i.partnumber.toLowerCase().includes(q) || i.lot_name.toLowerCase().includes(q)
+    ));
+}
+
+async function syncPartnumberBooks() {
+    let resp, data;
+    try {
+        resp = await fetch('/api/sync/partnumber-books', {method: 'POST'});
+        data = await resp.json();
+    } catch (e) {
+        showToast('Ошибка синхронизации', 'error');
+        return;
+    }
+    if (data.success) {
+        showToast(`Синхронизировано: ${data.synced} листов`, 'success');
+        loadBooks();
+    } else if (data.blocked) {
+        showToast(`Синк заблокирован: ${data.reason_text}`, 'error');
+    } else {
+        showToast('Ошибка: ' + (data.error || 'неизвестная ошибка'), 'error');
+    }
+}
+
+document.addEventListener('DOMContentLoaded', loadBooks);
+</script>
+{{end}}
+
+{{template "base" .}}
+
--- a/web/templates/project_detail.html
+++ b/web/templates/project_detail.html
@@ -211,6 +211,8 @@ const projectUUID = '{{.ProjectUUID}}';
 let configStatusMode = 'active';
 let project = null;
 let allConfigs = [];
+let dragConfigUUID = '';
+let isReorderingConfigs = false;
 let projectVariants = [];
 let projectsCatalog = [];
 let variantMenuInitialized = false;
@@ -221,6 +223,11 @@ function escapeHtml(text) {
    return div.innerHTML;
 }

+function formatMoneyNoDecimals(value) {
+    const safe = Number.isFinite(Number(value)) ? Number(value) : 0;
+    return '$' + Math.round(safe).toLocaleString('en-US');
+}
+
 function resolveProjectTrackerURL(projectData) {
    if (!projectData) return '';
    const explicitURL = (projectData.tracker_url || '').trim();
@@ -350,42 +357,53 @@ function renderConfigs(configs) {
    let totalSum = 0;
    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">Дата</th>';
+    html += '<th class="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase">Line</th>';
+    html += '<th class="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase">модель</th>';
    html += '<th class="px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase">Название</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">Цена (за 1 шт)</th>';
+    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">Стоимость</th>';
+    html += '<th class="px-2 py-3 text-center text-xs font-medium text-gray-500 uppercase w-12"></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">';
+    html += '</tr></thead><tbody class="divide-y" id="project-configs-tbody">';

-    configs.forEach(c => {
-        const date = new Date(c.created_at).toLocaleDateString('ru-RU');
+    configs.forEach((c, idx) => {
        const total = c.total_price || 0;
        const serverCount = c.server_count || 1;
        const author = c.owner_username || (c.user && c.user.username) || '—';
        const unitPrice = serverCount > 0 ? (total / serverCount) : 0;
+        const lineValue = (idx + 1) * 10;
+        const serverModel = (c.server_model || '').trim() || '—';
        totalSum += total;

-        html += '<tr class="hover:bg-gray-50">';
-        html += '<td class="px-4 py-3 text-sm text-gray-500">' + date + '</td>';
+        const draggable = configStatusMode === 'active' ? 'true' : 'false';
+        html += '<tr class="hover:bg-gray-50" draggable="' + draggable + '" data-config-uuid="' + c.uuid + '" ondragstart="onConfigDragStart(event)" ondragover="onConfigDragOver(event)" ondragleave="onConfigDragLeave(event)" ondrop="onConfigDrop(event)" ondragend="onConfigDragEnd(event)">';
+        if (configStatusMode === 'active') {
+            html += '<td class="px-4 py-3 text-sm text-gray-500">';
+            html += '<span class="inline-flex items-center gap-2"><span class="drag-handle text-gray-400 hover:text-gray-700 cursor-grab active:cursor-grabbing select-none" title="Перетащить для изменения порядка" aria-label="Перетащить">';
+            html += '<svg class="w-4 h-4 pointer-events-none" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M8 6h.01M8 12h.01M8 18h.01M16 6h.01M16 12h.01M16 18h.01"></path></svg>';
+            html += '</span><span>' + lineValue + '</span></span></td>';
+        } else {
+            html += '<td class="px-4 py-3 text-sm text-gray-500">' + lineValue + '</td>';
+        }
+        html += '<td class="px-4 py-3 text-sm text-gray-500">' + escapeHtml(serverModel) + '</td>';
        if (configStatusMode === 'archived') {
            html += '<td class="px-4 py-3 text-sm font-medium text-gray-700">' + escapeHtml(c.name) + '</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 text-gray-500">' + escapeHtml(author) + '</td>';
-        html += '<td class="px-4 py-3 text-sm text-gray-500">$' + unitPrice.toLocaleString('en-US', {minimumFractionDigits: 2}) + '</td>';
+        html += '<td class="px-4 py-3 text-sm text-gray-500">' + formatMoneyNoDecimals(unitPrice) + '</td>';
        if (configStatusMode === 'archived') {
            html += '<td class="px-4 py-3 text-sm text-gray-500">' + serverCount + '</td>';
        } else {
            html += '<td class="px-4 py-3 text-sm text-gray-500"><input type="number" min="1" value="' + serverCount + '" class="w-16 px-1 py-0.5 border rounded text-center text-sm" data-uuid="' + c.uuid + '" data-prev="' + serverCount + '" onchange="updateConfigServerCount(this)"></td>';
        }
-        html += '<td class="px-4 py-3 text-sm text-right" data-total-uuid="' + c.uuid + '">$' + total.toLocaleString('en-US', {minimumFractionDigits: 2}) + '</td>';
+        html += '<td class="px-4 py-3 text-sm text-right" data-total-uuid="' + c.uuid + '">' + formatMoneyNoDecimals(total) + '</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">';
+        html += '<td class="px-2 py-3 text-sm text-center text-gray-500 w-12">v' + versionNo + '</td>';
+        html += '<td class="px-4 py-3 text-sm text-right whitespace-nowrap"><div class="inline-flex items-center justify-end gap-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>';
@@ -397,15 +415,16 @@ function renderConfigs(configs) {
            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>';
        }
-        html += '</td></tr>';
+        html += '</div></td></tr>';
    });

    html += '</tbody>';
    html += '<tfoot class="bg-gray-50 border-t">';
    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 font-medium text-gray-700" colspan="5">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" data-footer-total="1">$' + 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">' + formatMoneyNoDecimals(totalSum) + '</td>';
+    html += '<td class="px-4 py-3"></td>';
    html += '<td class="px-4 py-3"></td>';
    html += '<td class="px-4 py-3"></td>';
    html += '</tr>';
@@ -994,6 +1013,105 @@ document.addEventListener('keydown', function(e) {
    }
 });

+function onConfigDragStart(event) {
+    if (configStatusMode !== 'active' || isReorderingConfigs) {
+        event.preventDefault();
+        return;
+    }
+    const row = event.target.closest('tr[data-config-uuid]');
+    if (!row) {
+        event.preventDefault();
+        return;
+    }
+
+    dragConfigUUID = row.dataset.configUuid || '';
+    if (!dragConfigUUID) {
+        event.preventDefault();
+        return;
+    }
+    row.classList.add('opacity-50');
+    event.dataTransfer.effectAllowed = 'move';
+    event.dataTransfer.setData('text/plain', dragConfigUUID);
+}
+
+function onConfigDragOver(event) {
+    if (!dragConfigUUID || configStatusMode !== 'active') return;
+    event.preventDefault();
+    const row = event.target.closest('tr[data-config-uuid]');
+    if (!row || row.dataset.configUuid === dragConfigUUID) return;
+    row.classList.add('ring-2', 'ring-blue-300');
+}
+
+function onConfigDragLeave(event) {
+    const row = event.target.closest('tr[data-config-uuid]');
+    if (!row) return;
+    row.classList.remove('ring-2', 'ring-blue-300');
+}
+
+async function onConfigDrop(event) {
+    if (!dragConfigUUID || configStatusMode !== 'active' || isReorderingConfigs) return;
+    event.preventDefault();
+
+    const targetRow = event.target.closest('tr[data-config-uuid]');
+    if (!targetRow) return;
+    targetRow.classList.remove('ring-2', 'ring-blue-300');
+
+    const targetUUID = targetRow.dataset.configUuid || '';
+    if (!targetUUID || targetUUID === dragConfigUUID) return;
+
+    const previous = allConfigs.slice();
+    const fromIndex = allConfigs.findIndex(c => c.uuid === dragConfigUUID);
+    const toIndex = allConfigs.findIndex(c => c.uuid === targetUUID);
+    if (fromIndex < 0 || toIndex < 0) return;
+
+    const [moved] = allConfigs.splice(fromIndex, 1);
+    allConfigs.splice(toIndex, 0, moved);
+    renderConfigs(allConfigs);
+    await saveConfigReorder(previous);
+}
+
+function onConfigDragEnd() {
+    document.querySelectorAll('tr[data-config-uuid]').forEach(row => {
+        row.classList.remove('ring-2', 'ring-blue-300', 'opacity-50');
+    });
+    dragConfigUUID = '';
+}
+
+async function saveConfigReorder(previousConfigs) {
+    if (isReorderingConfigs) return;
+    isReorderingConfigs = true;
+    const orderedUUIDs = allConfigs.map(c => c.uuid);
+
+    try {
+        const resp = await fetch('/api/projects/' + projectUUID + '/configs/reorder', {
+            method: 'PATCH',
+            headers: {'Content-Type': 'application/json'},
+            body: JSON.stringify({ordered_uuids: orderedUUIDs}),
+        });
+        if (!resp.ok) {
+            const data = await resp.json().catch(() => ({}));
+            throw new Error(data.error || 'Не удалось сохранить порядок');
+        }
+        const data = await resp.json();
+        allConfigs = data.configurations || allConfigs;
+        renderConfigs(allConfigs);
+        if (typeof showToast === 'function') {
+            showToast('Порядок сохранён', 'success');
+        }
+    } catch (e) {
+        allConfigs = previousConfigs.slice();
+        renderConfigs(allConfigs);
+        if (typeof showToast === 'function') {
+            showToast(e.message || 'Не удалось сохранить порядок', 'error');
+        } else {
+            alert(e.message || 'Не удалось сохранить порядок');
+        }
+    } finally {
+        isReorderingConfigs = false;
+        dragConfigUUID = '';
+    }
+}
+
 async function updateConfigServerCount(input) {
    const uuid = input.dataset.uuid;
    const prevValue = parseInt(input.dataset.prev) || 1;
@@ -1018,7 +1136,7 @@ async function updateConfigServerCount(input) {
        // Update row total price
        const totalCell = document.querySelector('[data-total-uuid="' + uuid + '"]');
        if (totalCell && updated.total_price != null) {
-            totalCell.textContent = '$' + updated.total_price.toLocaleString('en-US', {minimumFractionDigits: 2});
+            totalCell.textContent = formatMoneyNoDecimals(updated.total_price);
        }
        // Update the config in allConfigs and recalculate footer total
        for (let i = 0; i < allConfigs.length; i++) {
@@ -1040,7 +1158,7 @@ function updateFooterTotal() {
    allConfigs.forEach(c => { totalSum += (c.total_price || 0); });
    const footer = document.querySelector('tfoot td[data-footer-total]');
    if (footer) {
-        footer.textContent = '$' + totalSum.toLocaleString('en-US', {minimumFractionDigits: 2});
+        footer.textContent = formatMoneyNoDecimals(totalSum);
    }
 }

--- a/web/templates/projects.html
+++ b/web/templates/projects.html
@@ -97,6 +97,40 @@ function formatDateTime(value) {
    });
 }

+function formatDateParts(value) {
+    if (!value) return null;
+    const date = new Date(value);
+    if (Number.isNaN(date.getTime())) return null;
+    return {
+        date: date.toLocaleDateString('ru-RU', {
+            year: 'numeric',
+            month: '2-digit',
+            day: '2-digit'
+        }),
+        time: date.toLocaleTimeString('ru-RU', {
+            hour: '2-digit',
+            minute: '2-digit'
+        })
+    };
+}
+
+function renderAuditCell(value, user) {
+    const parts = formatDateParts(value);
+    const safeUser = escapeHtml((user || '—').trim() || '—');
+    if (!parts) {
+        return '<div class="leading-tight">' +
+            '<div class="text-gray-400">—</div>' +
+            '<div class="text-gray-400">—</div>' +
+            '<div class="text-gray-500">@ ' + safeUser + '</div>' +
+        '</div>';
+    }
+    return '<div class="leading-tight whitespace-nowrap">' +
+        '<div>' + escapeHtml(parts.date) + '</div>' +
+        '<div class="text-gray-500">' + escapeHtml(parts.time) + '</div>' +
+        '<div class="text-gray-600">@ ' + safeUser + '</div>' +
+    '</div>';
+}
+
 function normalizeVariant(variant) {
    const trimmed = (variant || '').trim();
    return trimmed === '' ? 'main' : trimmed;
@@ -225,20 +259,20 @@ async function loadProjects() {
        return;
    }

-    let html = '<div class="overflow-x-auto"><table class="w-full">';
+    let html = '<div class="overflow-x-auto"><table class="w-full table-fixed min-w-[980px]">';
    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="w-28 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';
    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">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 += '<th class="w-44 px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase">Создан</th>';
+    html += '<th class="w-44 px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase">Изменен</th>';
+    html += '<th class="w-36 px-4 py-3 text-left text-xs font-medium text-gray-500 uppercase">Варианты</th>';
+    html += '<th class="w-36 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>';
@@ -259,14 +293,12 @@ async function loadProjects() {
        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 font-medium align-top"><a class="inline-block max-w-full text-blue-600 hover:underline whitespace-nowrap" href="/projects/' + p.uuid + '">' + escapeHtml(p.code || '—') + '</a></td>';
+        html += '<td class="px-4 py-3 text-sm text-gray-700 align-top"><div class="truncate" title="' + escapeHtml(displayName) + '">' + escapeHtml(displayName || '—') + '</div></td>';
+        html += '<td class="px-4 py-3 text-sm text-gray-600 align-top">' + renderAuditCell(p.created_at, createdBy) + '</td>';
+        html += '<td class="px-4 py-3 text-sm text-gray-600 align-top">' + renderAuditCell(p.updated_at, updatedBy) + '</td>';
+        html += '<td class="px-4 py-3 text-sm align-top"><div class="flex flex-wrap gap-1">' + variantChips + '</div></td>';
        html += '<td class="px-4 py-3 text-sm text-right"><div class="inline-flex items-center gap-2">';

        if (p.is_active) {
Author	SHA1	Message	Date
Michael Chus	ed0ef04d10	Merge feature/vendor-spec-import into main (v1.4)	2026-03-04 12:35:40 +03:00
Michael Chus	2e0faf4aec	Rename vendor price to project price, expand pricing CSV export - Rename "Цена вендора" to "Цена проектная" in pricing tab table header and comments - Expand pricing CSV export to include: Lot, P/N вендора, Описание, Кол-во, Цена проектная Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>	2026-03-04 12:27:34 +03:00
Michael Chus	4b0879779a	Update bible submodule to latest Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>	2026-03-01 22:27:45 +03:00
Michael Chus	2b175a3d1e	Update bible paths kit/ → rules/ Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>	2026-03-01 16:57:50 +03:00
Michael Chus	5732c75b85	Update bible submodule to latest	2026-03-01 16:41:42 +03:00
Michael Chus	eb7c3739ce	Add shared bible submodule, rename local bible to bible-local - Add bible.git as submodule at bible/ - Rename bible/ → bible-local/ (project-specific architecture) - Update CLAUDE.md to reference both bible/ and bible-local/ - Add AGENTS.md for Codex with same structure Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>	2026-03-01 16:41:14 +03:00
Mikhail Chusavitin	6e0335af7c	Fix pricing tab warehouse totals and guard custom price DOM access	2026-02-27 16:53:34 +03:00
Mikhail Chusavitin	a42a80beb8	fix(bom): preserve local vendor spec on config import	2026-02-27 10:11:20 +03:00
Mikhail Chusavitin	586114c79c	refactor(bom): enforce canonical lot_mappings persistence	2026-02-27 09:47:46 +03:00
Mikhail Chusavitin	e9230c0e58	feat(bom): canonical lot mappings and updated vendor spec docs	2026-02-25 19:07:27 +03:00
Mikhail Chusavitin	aa65fc8156	Fix project line numbering and reorder bootstrap	2026-02-25 17:19:26 +03:00
Mikhail Chusavitin	b22e961656	feat(projects): compact table layout for dates and names	2026-02-25 17:19:26 +03:00
Mikhail Chusavitin	af83818564	fix(pricelists): tolerate restricted DB grants and use embedded assets only	2026-02-25 17:19:26 +03:00
Mikhail Chusavitin	8a138327a3	fix(sync): backfill missing items for existing local pricelists	2026-02-25 17:18:57 +03:00
Mikhail Chusavitin	d1f65f6684	feat(projects): compact table layout for dates and names	2026-02-24 15:42:04 +03:00
Mikhail Chusavitin	7b371add10	Merge branch 'stable' # Conflicts: # bible/03-database.md	2026-02-24 15:13:41 +03:00
Michael Chus	d0400b18a3	feat(vendor-spec): BOM import, LOT autocomplete, pricing, partnumber_seen push - BOM paste: auto-detect columns by content (price, qty, PN, description); handles $5,114.00 and European comma-decimal formats - LOT input: HTML5 datalist rebuilt on each renderBOMTable from allComponents; oninput updates data only (no re-render), onchange validates+resolves - BOM persistence: PUT handler explicitly marshals VendorSpec to JSON string (GORM Update does not reliably call driver.Valuer for custom types) - BOM autosave after every resolveBOM() call - Pricing tab: async renderPricingTab() calls /api/quote/price-levels for all resolved LOTs directly — Estimate prices shown even before cart apply - Unresolved PNs pushed to qt_vendor_partnumber_seen via POST /api/sync/partnumber-seen (fire-and-forget from JS) - sync.PushPartnumberSeen(): upsert with ON DUPLICATE KEY UPDATE last_seen_at - partnumber_books: pull ALL books (not only is_active=1); re-pull items when header exists but item count is 0; fallback for missing description column - partnumber_books UI: collapsible snapshot section (collapsed by default), pagination (10/page), sync button always visible in header - vendorSpec handlers: use GetConfigurationByUUID + IsActive check (removed original_username from WHERE — GetUsername returns "" without JWT) - bible/09-vendor-spec.md: updated with all architectural decisions Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>	2026-02-21 22:21:13 +03:00
Michael Chus	d3f1a838eb	feat: add Партномера nav item and summary page - Top nav: link to /partnumber-books - Page: summary cards (active version, unique LOTs, total PN, primary PN) + searchable items table for active book + collapsible history of all snapshots Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>	2026-02-21 17:19:40 +03:00
Michael Chus	c6086ac03a	ui: simplify BOM paste to fixed positional column order Format: PN \| qty \| [description] \| [price]. Remove heuristic column-type detection. Update hint text accordingly. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>	2026-02-21 17:16:57 +03:00
Michael Chus	a127ebea82	ui: add clear BOM button with server-side reset Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>	2026-02-21 17:15:13 +03:00
Michael Chus	347599e06b	ui: add format hint to BOM vendor paste area Show supported column formats and auto-detection rules so users know what to copy from Excel. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>	2026-02-21 17:13:49 +03:00
Michael Chus	4a44d48366	docs(bible): fix and clarify SQLite migration mechanism in 03-database.md Previous description was wrong: migrations/*.sql are MariaDB-only. Document the actual 3-level SQLite migration flow: 1. GORM AutoMigrate (primary, runs on every start) 2. runLocalMigrations Go functions (data backfill, index creation) 3. Centralized remote migrations via qt_client_local_migrations Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>	2026-02-21 17:09:45 +03:00
Michael Chus	23882637b5	fix: use AutoMigrate for new SQLite tables instead of hardcoded migrations LocalPartnumberBook and LocalPartnumberBookItem added to AutoMigrate list in localdb.go — consistent with all other local tables. Removed incorrectly added addPartnumberBooks/addVendorSpecColumn functions from migrations.go (vendor_spec column is handled by AutoMigrate via the LocalConfiguration model field). Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>	2026-02-21 17:07:44 +03:00
Michael Chus	5e56f386cc	feat: implement vendor spec BOM import and PN→LOT resolution (Phase 1) - Migration 029: local_partnumber_books, local_partnumber_book_items, vendor_spec TEXT column on local_configurations - Models: LocalPartnumberBook, LocalPartnumberBookItem, VendorSpec, VendorSpecItem with JSON Valuer/Scanner - Repository: PartnumberBookRepository (GetActiveBook, FindLotByPartnumber, SaveBook/Items, ListBooks, CountBookItems) - Service: VendorSpecResolver 3-step resolution (book → manual suggestion → unresolved) + AggregateLOTs with is_primary_pn qty logic - Sync: PullPartnumberBooks append-only pull from qt_partnumber_books - Handlers: VendorSpecHandler (GET/PUT/resolve/apply), PartnumberBooksHandler - Routes: /api/configs/:uuid/vendor-spec*, /api/partnumber-books, /api/sync/partnumber-books, /partnumber-books page - UI: 3 top-level tabs [Estimate][BOM вендора][Ценообразование]; Excel paste, PN resolution, inline LOT autocomplete, pricing table - Bible: 03-database.md updated, 09-vendor-spec.md added Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>	2026-02-21 10:22:22 +03:00
Michael Chus	e5b6902c9e	Implement persistent Line ordering for project specs and update bible	2026-02-21 07:09:38 +03:00