docs: add release notes for v0.2.7

fix: Windows compatibility and localhost binding
**Windows compatibility:** - Added filepath.Join for all template and static paths - Fixes "path not found" errors on Windows **Localhost binding:** - Changed default host from 0.0.0.0 to 127.0.0.1 - Browser always opens on 127.0.0.1 (localhost) - Setup mode now listens on 127.0.0.1:8080 - Updated config.example.yaml with comment about 0.0.0.0 This ensures the app works correctly on Windows and opens browser on the correct localhost address. Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
2026-02-03 11:39:23 +03:00 · 2026-02-03 11:38:28 +03:00 · 2026-02-03 11:04:04 +03:00 · 2026-02-03 10:58:41 +03:00 · 2026-02-03 10:57:22 +03:00 · 2026-02-03 10:55:14 +03:00
29 changed files with 1548 additions and 211 deletions
--- a/.gitignore
+++ b/.gitignore
@@ -41,3 +41,4 @@ Network Trash Folder
 Temporary Items
 .apdisk

+releases/
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -46,30 +46,31 @@
 **TODO:**
 - ❌ Conflict resolution (Phase 4, last-write-wins default)

-### UI Improvements 🔶 IN PROGRESS
+### UI Improvements ✅ MOSTLY DONE

-**1. Sync icon + pricelist badge в header (tasks 4+2):**
- ❌ `sync_status.html`: заменить текст Online/Offline на SVG иконку
- ❌ Кнопка sync → иконка (circular arrows) вместо текста
- ❌ Dropdown при клике: Push changes, Full sync, статус последней синхронизации
- ❌ `configs.html`: рядом с кнопкой "Создать" показать badge с версией активного прайслиста
- ❌ Загружать через `/api/pricelists/latest` при DOMContentLoaded
+**1. Sync UI + pricelist badge: ✅ DONE**
+- ✅ `sync_status.html`: SVG иконки Online/Offline (кликабельные → открывают модал)
+- ✅ Кнопка sync → иконка circular arrows (только full sync)
+- ✅ Модальное окно "Статус системы" в `base.html` (info о БД, ошибки синхронизации)
+- ✅ `configs.html`: badge с версией активного прайслиста
+- ✅ Загрузка через `/api/pricelists/latest` при DOMContentLoaded
+- ✅ Удалён dropdown с Push changes (упрощение UI)

-**2. Прайслисты → вкладка в "Администратор цен" (task 1):**
- ❌ `base.html`: убрать отдельную ссылку "Прайслисты" из навигации
- ❌ `admin_pricing.html`: добавить 4-ю вкладку "Прайслисты"
- ❌ Перенести логику из `pricelists.html` (table, create modal, CRUD) в эту вкладку
- ❌ Route `/pricelists` → редирект на `/admin/pricing?tab=pricelists` или удалить
+**2. Прайслисты → вкладка в "Администратор цен": ✅ DONE**
+- ✅ `base.html`: убрана ссылка "Прайслисты" из навигации
+- ✅ `admin_pricing.html`: добавлена вкладка "Прайслисты"
+- ✅ Логика перенесена из `pricelists.html` (table, create modal, CRUD)
+- ✅ Route `/pricelists` → редирект на `/admin/pricing?tab=pricelists`
+- ✅ Поддержка URL param `?tab=pricelists`

-**3. Страница настроек: расширить + синхронизация (task 3):**
- ❌ `setup.html`: переделать на `{{template "base" .}}` структуру
- ❌ Увеличить до `max-w-4xl`, разделить на 2 секции
- ❌ Секция A: Подключение к БД (текущая форма)
- ❌ Секция B: Синхронизация данных:
-  - Статус Online/Offline
-  - Кнопки: "Синхронизировать всё", "Обновить компоненты", "Обновить прайслисты"
-  - Журнал синхронизации (последние N операций)
- ❌ Возможно: новый API endpoint для sync log
+**3. Модал "Настройка цены" - кол-во котировок с учётом периода: ❌ TODO**
+- Текущее: показывает только общее кол-во котировок
+- Новое: показывать `N (всего: M)` где N - за выбранный период, M - всего
+- ❌ `admin_pricing.html`: обновить `#modal-quote-count`
+- ❌ `admin_pricing_handler.go`: в `/api/admin/pricing/preview` возвращать `quote_count_period` + `quote_count_total`
+
+**4. Страница настроек: ❌ ОТЛОЖЕНО**
+- Перенесено в Phase 3 (после основных UI улучшений)

 ### Phase 3: Projects and Specifications
 - qt_projects, qt_specifications tables (MariaDB)
@@ -133,9 +134,22 @@ Go 1.22+ | Gin | GORM | MariaDB 11 | SQLite (glebarez/sqlite) | htmx + Tailwind

 ## Commands
 ```bash
-go run ./cmd/server          # Dev server
-go run ./cmd/cron -job=X     # cleanup-pricelists | update-prices | update-popularity
-CGO_ENABLED=0 go build -ldflags="-s -w" -o bin/quoteforge ./cmd/server
+# Development
+go run ./cmd/qfs                # Dev server
+make run                        # Dev server (via Makefile)
+
+# Production build
+make build-release              # Optimized build with version (recommended)
+VERSION=$(git describe --tags --always --dirty)
+CGO_ENABLED=0 go build -ldflags="-s -w -X main.Version=$VERSION" -o bin/qfs ./cmd/qfs
+
+# Cron jobs
+go run ./cmd/cron -job=cleanup-pricelists  # Remove old unused pricelists
+go run ./cmd/cron -job=update-prices       # Recalculate all prices
+go run ./cmd/cron -job=update-popularity   # Update popularity scores
+
+# Check version
+./bin/qfs -version
 ```

 ## Code Style
--- a/LOCAL_FIRST_INTEGRATION.md
+++ b/LOCAL_FIRST_INTEGRATION.md
@@ -60,7 +60,7 @@ localConfigService := services.NewLocalConfigurationService(
 ### Шаг 1: Обновить main.go

 ```go
-// В cmd/server/main.go
+// В cmd/qfs/main.go
 syncService := sync.NewService(pricelistRepo, configRepo, local)

 // Создать isOnline функцию
@@ -165,7 +165,7 @@ type PendingChange struct {

 ```bash
 # Compile
-go build ./cmd/server
+go build ./cmd/qfs

 # Run
 ./quoteforge
--- a/MIGRATION_PRICE_REFRESH.md
+++ b/MIGRATION_PRICE_REFRESH.md
@@ -89,7 +89,7 @@ mysql -u user -p RFQ_LOG < migrations/004_add_price_updated_at.sql
 - `internal/models/configuration.go` - добавлено поле `PriceUpdatedAt`
 - `internal/services/configuration.go` - добавлен метод `RefreshPrices()`
 - `internal/handlers/configuration.go` - добавлен обработчик `RefreshPrices()`
- `cmd/server/main.go` - добавлен маршрут `/api/configs/:uuid/refresh-prices`
+- `cmd/qfs/main.go` - добавлен маршрут `/api/configs/:uuid/refresh-prices`
 - `web/templates/index.html` - добавлена кнопка и JavaScript функции
 - `migrations/004_add_price_updated_at.sql` - SQL миграция
 - `CLAUDE.md` - обновлена документация
--- a/97
+++ b/97
@@ -0,0 +1,97 @@
+.PHONY: build build-release clean test run version
+
+# Get version from git
+VERSION := $(shell git describe --tags --always --dirty 2>/dev/null || echo "dev")
+BUILD_TIME := $(shell date -u '+%Y-%m-%d_%H:%M:%S')
+LDFLAGS := -s -w -X main.Version=$(VERSION)
+
+# Binary name
+BINARY := qfs
+
+# Build for development (with debug info)
+build:
+	go build -o bin/$(BINARY) ./cmd/qfs
+
+# Build for release (optimized, with version)
+build-release:
+	@echo "Building $(BINARY) version $(VERSION)..."
+	CGO_ENABLED=0 go build -ldflags="$(LDFLAGS)" -o bin/$(BINARY) ./cmd/qfs
+	@echo "✓ Built: bin/$(BINARY)"
+	@./bin/$(BINARY) -version
+
+# Build release for Linux (cross-compile)
+build-linux:
+	@echo "Building $(BINARY) for Linux..."
+	CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -ldflags="$(LDFLAGS)" -o bin/$(BINARY)-linux-amd64 ./cmd/qfs
+	@echo "✓ Built: bin/$(BINARY)-linux-amd64"
+
+# Build release for macOS (cross-compile)
+build-macos:
+	@echo "Building $(BINARY) for macOS..."
+	CGO_ENABLED=0 GOOS=darwin GOARCH=amd64 go build -ldflags="$(LDFLAGS)" -o bin/$(BINARY)-darwin-amd64 ./cmd/qfs
+	CGO_ENABLED=0 GOOS=darwin GOARCH=arm64 go build -ldflags="$(LDFLAGS)" -o bin/$(BINARY)-darwin-arm64 ./cmd/qfs
+	@echo "✓ Built: bin/$(BINARY)-darwin-amd64"
+	@echo "✓ Built: bin/$(BINARY)-darwin-arm64"
+
+# Build release for Windows (cross-compile)
+build-windows:
+	@echo "Building $(BINARY) for Windows..."
+	CGO_ENABLED=0 GOOS=windows GOARCH=amd64 go build -ldflags="$(LDFLAGS)" -o bin/$(BINARY)-windows-amd64.exe ./cmd/qfs
+	@echo "✓ Built: bin/$(BINARY)-windows-amd64.exe"
+
+# Build all platforms
+build-all: build-release build-linux build-macos build-windows
+
+# Create release packages for all platforms
+release:
+	@./scripts/release.sh
+
+# Show version
+version:
+	@echo "Version: $(VERSION)"
+
+# Clean build artifacts
+clean:
+	rm -rf bin/
+	rm -f $(BINARY)
+
+# Run tests
+test:
+	go test -v ./...
+
+# Run development server
+run:
+	go run ./cmd/qfs
+
+# Run with auto-restart (requires entr: brew install entr)
+watch:
+	find . -name '*.go' | entr -r go run ./cmd/qfs
+
+# Install dependencies
+deps:
+	go mod download
+	go mod tidy
+
+# Help
+help:
+	@echo "QuoteForge Server (qfs) - Build Commands"
+	@echo ""
+	@echo "Usage: make [target]"
+	@echo ""
+	@echo "Targets:"
+	@echo "  build          Build for development (with debug info)"
+	@echo "  build-release  Build optimized release (default)"
+	@echo "  build-linux    Cross-compile for Linux"
+	@echo "  build-macos    Cross-compile for macOS (Intel + Apple Silicon)"
+	@echo "  build-windows  Cross-compile for Windows"
+	@echo "  build-all      Build for all platforms"
+	@echo "  release        Create release packages for all platforms"
+	@echo "  version        Show current version"
+	@echo "  clean          Remove build artifacts"
+	@echo "  test           Run tests"
+	@echo "  run            Run development server"
+	@echo "  watch          Run with auto-restart (requires entr)"
+	@echo "  deps           Install/update dependencies"
+	@echo "  help           Show this help"
+	@echo ""
+	@echo "Current version: $(VERSION)"
--- a/README.md
+++ b/README.md
@@ -82,7 +82,7 @@ auth:
 ### 3. Миграции базы данных

 ```bash
-go run ./cmd/server -migrate
+go run ./cmd/qfs -migrate
 ```

 ### 4. Импорт метаданных компонентов
@@ -95,11 +95,27 @@ go run ./cmd/importer

 ```bash
 # Development
-go run ./cmd/server
+go run ./cmd/qfs

-# Production
-CGO_ENABLED=0 go build -ldflags="-s -w" -o bin/quoteforge ./cmd/server
-./bin/quoteforge
+# Production (with Makefile - recommended)
+make build-release    # Builds with version info
+./bin/qfs -version    # Check version
+
+# Production (manual)
+VERSION=$(git describe --tags --always --dirty)
+CGO_ENABLED=0 go build -ldflags="-s -w -X main.Version=$VERSION" -o bin/qfs ./cmd/qfs
+./bin/qfs -version
+```
+
+**Makefile команды:**
+```bash
+make build-release   # Оптимизированная сборка с версией
+make build-all       # Сборка для всех платформ (Linux, macOS, Windows)
+make build-windows   # Только для Windows
+make run             # Запуск dev сервера
+make test            # Запуск тестов
+make clean           # Очистка bin/
+make help            # Показать все команды
 ```

 Приложение будет доступно по адресу: http://localhost:8080
@@ -209,13 +225,13 @@ go run ./cmd/cron -job=update-popularity

 ```bash
 # Запуск в режиме разработки (hot reload)
-go run ./cmd/server
+go run ./cmd/qfs

 # Запуск тестов
 go test ./...

 # Сборка для Linux
-CGO_ENABLED=0 go build -ldflags="-s -w" -o bin/quoteforge ./cmd/server
+CGO_ENABLED=0 go build -ldflags="-s -w" -o bin/qfs ./cmd/qfs
 ```

 ## Переменные окружения
--- a/RELEASE_v0.2.6.md
+++ b/RELEASE_v0.2.6.md
@@ -0,0 +1,60 @@
+## Release v0.2.6 - Build & Release Improvements
+
+Minor release focused on developer experience and release automation.
+
+### Changes
+
+**Build System**
+- 🎯 Renamed binary from `quoteforge` to `qfs` (shorter, easier to type)
+- 🏷️ Added `-version` flag to display build version
+- 📦 Added Makefile with build targets for all platforms
+- 🚀 Added automated release script for multi-platform binaries
+
+**New Commands**
+```bash
+make build-release   # Optimized build with version info
+make build-all       # Build for Linux + macOS (Intel/ARM)
+make release         # Create release packages with checksums
+./bin/qfs -version   # Show version
+```
+
+**Release Artifacts**
+- Linux AMD64
+- macOS Intel (AMD64)
+- macOS Apple Silicon (ARM64)
+- Windows AMD64
+- SHA256 checksums
+
+### Installation
+
+Download the appropriate binary for your platform:
+```bash
+# Linux
+wget https://git.mchus.pro/mchus/QuoteForge/releases/download/v0.2.6/qfs-v0.2.6-linux-amd64.tar.gz
+tar -xzf qfs-v0.2.6-linux-amd64.tar.gz
+chmod +x qfs-linux-amd64
+./qfs-linux-amd64
+
+# macOS Intel
+curl -L -O https://git.mchus.pro/mchus/QuoteForge/releases/download/v0.2.6/qfs-v0.2.6-darwin-amd64.tar.gz
+tar -xzf qfs-v0.2.6-darwin-amd64.tar.gz
+chmod +x qfs-darwin-amd64
+./qfs-darwin-amd64
+
+# macOS Apple Silicon
+curl -L -O https://git.mchus.pro/mchus/QuoteForge/releases/download/v0.2.6/qfs-v0.2.6-darwin-arm64.tar.gz
+tar -xzf qfs-v0.2.6-darwin-arm64.tar.gz
+chmod +x qfs-darwin-arm64
+./qfs-darwin-arm64
+
+# Windows
+curl -L -O https://git.mchus.pro/mchus/QuoteForge/releases/download/v0.2.6/qfs-v0.2.6-windows-amd64.zip
+unzip qfs-v0.2.6-windows-amd64.zip
+qfs-windows-amd64.exe
+```
+
+### Breaking Changes
+None - fully backward compatible with v0.2.5
+
+### Full Changelog
+https://git.mchus.pro/mchus/QuoteForge/compare/v0.2.5...v0.2.6
--- a/RELEASE_v0.2.7.md
+++ b/RELEASE_v0.2.7.md
@@ -0,0 +1,57 @@
+## Release v0.2.7 - Windows Support & Localhost Binding
+
+Bug fix release improving Windows compatibility and default network binding.
+
+### Changes
+
+**Windows Support**
+- ✅ Fixed template loading errors on Windows
+- ✅ All file paths now use `filepath.Join` for cross-platform compatibility
+- ✅ Binary now works correctly on Windows without path errors
+
+**Localhost Binding**
+- ✅ Server now binds to `127.0.0.1` by default (instead of `0.0.0.0`)
+- ✅ Browser always opens to `http://127.0.0.1:8080`
+- ✅ Setup mode properly opens browser automatically
+- ✅ More secure default - only accessible from local machine
+
+> **Note:** To bind to all network interfaces (for network access), set `host: "0.0.0.0"` in config.yaml
+
+### Installation
+
+Download the appropriate binary for your platform:
+
+```bash
+# Linux
+wget https://git.mchus.pro/mchus/QuoteForge/releases/download/v0.2.7/qfs-v0.2.7-linux-amd64.tar.gz
+tar -xzf qfs-v0.2.7-linux-amd64.tar.gz
+chmod +x qfs-linux-amd64
+./qfs-linux-amd64
+
+# macOS Intel
+curl -L -O https://git.mchus.pro/mchus/QuoteForge/releases/download/v0.2.7/qfs-v0.2.7-darwin-amd64.tar.gz
+tar -xzf qfs-v0.2.7-darwin-amd64.tar.gz
+chmod +x qfs-darwin-amd64
+./qfs-darwin-amd64
+
+# macOS Apple Silicon
+curl -L -O https://git.mchus.pro/mchus/QuoteForge/releases/download/v0.2.7/qfs-v0.2.7-darwin-arm64.tar.gz
+tar -xzf qfs-v0.2.7-darwin-arm64.tar.gz
+chmod +x qfs-darwin-arm64
+./qfs-darwin-arm64
+
+# Windows
+# Download and extract: https://git.mchus.pro/mchus/QuoteForge/releases/download/v0.2.7/qfs-v0.2.7-windows-amd64.zip
+# Run: qfs-windows-amd64.exe
+```
+
+### Breaking Changes
+None - fully backward compatible with v0.2.6
+
+### Upgrade Notes
+- If you use config.yaml with `host: "0.0.0.0"`, the app will respect that setting
+- Default behavior now binds only to localhost for security
+- Windows users no longer need workarounds for path errors
+
+### Full Changelog
+https://git.mchus.pro/mchus/QuoteForge/compare/v0.2.6...v0.2.7
--- a/cmd/server/main.go
+++ b/cmd/server/main.go
@@ -7,13 +7,17 @@ import (
 	"log/slog"
 	"net/http"
 	"os"
+	"os/exec"
 	"os/signal"
+	"path/filepath"
+	"runtime"
 	"strconv"
 	"syscall"
 	"time"

 	"github.com/gin-gonic/gin"
 	"git.mchus.pro/mchus/quoteforge/internal/config"
+	"git.mchus.pro/mchus/quoteforge/internal/db"
 	"git.mchus.pro/mchus/quoteforge/internal/handlers"
 	"git.mchus.pro/mchus/quoteforge/internal/localdb"
 	"git.mchus.pro/mchus/quoteforge/internal/middleware"
@@ -33,11 +37,21 @@ const (
 	localDBPath = "./data/settings.db"
 )

+// Version is set via ldflags during build
+var Version = "dev"
+
 func main() {
 	configPath := flag.String("config", "config.yaml", "path to config file (optional, for server settings)")
 	migrate := flag.Bool("migrate", false, "run database migrations")
+	version := flag.Bool("version", false, "show version information")
 	flag.Parse()

+	// Show version if requested
+	if *version {
+		fmt.Printf("qfs version %s\n", Version)
+		os.Exit(0)
+	}
+
 	// Initialize local SQLite database (always used)
 	local, err := localdb.New(localDBPath)
 	if err != nil {
@@ -63,28 +77,25 @@ func main() {

 	setupLogger(cfg.Logging)

-	// Get DSN from local SQLite
-	dsn, err := local.GetDSN()
-	if err != nil {
-		slog.Error("failed to get database settings", "error", err)
-		os.Exit(1)
-	}
-
-	// Connect to MariaDB
-	db, err := setupDatabaseFromDSN(dsn)
-	if err != nil {
-		slog.Error("failed to connect to database", "error", err)
-		slog.Info("you may need to reconfigure connection at /setup")
-		os.Exit(1)
-	}
+	// Create connection manager and try to connect immediately if settings exist
+	connMgr := db.NewConnectionManager(local)

 	dbUser := local.GetDBUser()
+	dbUserID := uint(1)

-	// Ensure DB user exists in qt_users table (for foreign key constraint)
-	dbUserID, err := models.EnsureDBUser(db, dbUser)
+	// Try to connect to MariaDB on startup
+	mariaDB, err := connMgr.GetDB()
 	if err != nil {
-		slog.Error("failed to ensure DB user exists", "error", err)
-		os.Exit(1)
+		slog.Warn("failed to connect to MariaDB on startup, starting in offline mode", "error", err)
+		mariaDB = nil
+	} else {
+		slog.Info("successfully connected to MariaDB on startup")
+		// Ensure DB user exists and get their ID
+		if dbUserID, err = models.EnsureDBUser(mariaDB, dbUser); err != nil {
+			slog.Error("failed to ensure DB user", "error", err)
+			// Continue with default ID
+			dbUserID = uint(1)
+		}
 	}

 	slog.Info("starting QuoteForge server",
@@ -92,15 +103,20 @@ func main() {
 		"port", cfg.Server.Port,
 		"db_user", dbUser,
 		"db_user_id", dbUserID,
+		"online", mariaDB != nil,
 	)

 	if *migrate {
+		if mariaDB == nil {
+			slog.Error("cannot run migrations: database not available")
+			os.Exit(1)
+		}
 		slog.Info("running database migrations...")
-		if err := models.Migrate(db); err != nil {
+		if err := models.Migrate(mariaDB); err != nil {
 			slog.Error("migration failed", "error", err)
 			os.Exit(1)
 		}
-		if err := models.SeedCategories(db); err != nil {
+		if err := models.SeedCategories(mariaDB); err != nil {
 			slog.Error("seeding categories failed", "error", err)
 			os.Exit(1)
 		}
@@ -108,17 +124,17 @@ func main() {
 	}

 	gin.SetMode(cfg.Server.Mode)
-	router, syncService, err := setupRouter(db, cfg, local, dbUserID)
+	router, syncService, err := setupRouter(cfg, local, connMgr, mariaDB, dbUserID)
 	if err != nil {
 		slog.Error("failed to setup router", "error", err)
 		os.Exit(1)
 	}

-	// Start background sync worker
+	// Start background sync worker (will auto-skip when offline)
 	workerCtx, workerCancel := context.WithCancel(context.Background())
 	defer workerCancel()

-	syncWorker := sync.NewWorker(syncService, db, 5*time.Minute)
+	syncWorker := sync.NewWorker(syncService, connMgr, 5*time.Minute)
 	go syncWorker.Start(workerCtx)

 	srv := &http.Server{
@@ -136,6 +152,18 @@ func main() {
 		}
 	}()

+	// Automatically open browser after server starts (with a small delay)
+	go func() {
+		time.Sleep(1 * time.Second)
+		// Always use localhost for browser, even if server binds to 0.0.0.0
+		browserURL := fmt.Sprintf("http://127.0.0.1:%d", cfg.Server.Port)
+		slog.Info("Opening browser to", "url", browserURL)
+		err := openBrowser(browserURL)
+		if err != nil {
+			slog.Warn("Failed to open browser", "error", err)
+		}
+	}()
+
 	quit := make(chan os.Signal, 1)
 	signal.Notify(quit, syscall.SIGINT, syscall.SIGTERM)
 	<-quit
@@ -159,7 +187,7 @@ func main() {

 func setConfigDefaults(cfg *config.Config) {
 	if cfg.Server.Host == "" {
-		cfg.Server.Host = "0.0.0.0"
+		cfg.Server.Host = "127.0.0.1"
 	}
 	if cfg.Server.Port == 0 {
 		cfg.Server.Port = 8080
@@ -197,7 +225,9 @@ func setConfigDefaults(cfg *config.Config) {
 func runSetupMode(local *localdb.LocalDB) {
 	restartSig := make(chan struct{}, 1)

-	setupHandler, err := handlers.NewSetupHandler(local, "web/templates", restartSig)
+	// In setup mode, we don't have a connection manager yet (will restart after setup)
+	templatesPath := filepath.Join("web", "templates")
+	setupHandler, err := handlers.NewSetupHandler(local, nil, templatesPath, restartSig)
 	if err != nil {
 		slog.Error("failed to create setup handler", "error", err)
 		os.Exit(1)
@@ -207,7 +237,8 @@ func runSetupMode(local *localdb.LocalDB) {
 	router := gin.New()
 	router.Use(gin.Recovery())

-	router.Static("/static", "web/static")
+	staticPath := filepath.Join("web", "static")
+	router.Static("/static", staticPath)

 	// Setup routes only
 	router.GET("/", func(c *gin.Context) {
@@ -226,9 +257,8 @@ func runSetupMode(local *localdb.LocalDB) {
 		})
 	})

-	addr := ":8080"
+	addr := "127.0.0.1:8080"
 	slog.Info("starting setup mode server", "address", addr)
-	slog.Info("open http://localhost:8080/setup to configure database connection")

 	srv := &http.Server{
 		Addr:    addr,
@@ -242,6 +272,17 @@ func runSetupMode(local *localdb.LocalDB) {
 		}
 	}()

+	// Open browser to setup page
+	go func() {
+		time.Sleep(1 * time.Second)
+		browserURL := "http://127.0.0.1:8080/setup"
+		slog.Info("Opening browser to setup page", "url", browserURL)
+		err := openBrowser(browserURL)
+		if err != nil {
+			slog.Warn("Failed to open browser", "error", err)
+		}
+	}()
+
 	quit := make(chan os.Signal, 1)
 	signal.Notify(quit, syscall.SIGINT, syscall.SIGTERM)

@@ -308,56 +349,89 @@ func setupDatabaseFromDSN(dsn string) (*gorm.DB, error) {
 	return db, nil
 }

-func setupRouter(db *gorm.DB, cfg *config.Config, local *localdb.LocalDB, dbUserID uint) (*gin.Engine, *sync.Service, error) {
+func setupRouter(cfg *config.Config, local *localdb.LocalDB, connMgr *db.ConnectionManager, mariaDB *gorm.DB, dbUserID uint) (*gin.Engine, *sync.Service, error) {
+	// mariaDB may be nil if we're in offline mode
+
 	// Repositories
-	componentRepo := repository.NewComponentRepository(db)
-	categoryRepo := repository.NewCategoryRepository(db)
-	priceRepo := repository.NewPriceRepository(db)
-	alertRepo := repository.NewAlertRepository(db)
-	statsRepo := repository.NewStatsRepository(db)
-	pricelistRepo := repository.NewPricelistRepository(db)
-	configRepo := repository.NewConfigurationRepository(db)
+	var componentRepo *repository.ComponentRepository
+	var categoryRepo *repository.CategoryRepository
+	var priceRepo *repository.PriceRepository
+	var alertRepo *repository.AlertRepository
+	var statsRepo *repository.StatsRepository
+	var pricelistRepo *repository.PricelistRepository
+
+	// Only initialize repositories if we have a database connection
+	if mariaDB != nil {
+		componentRepo = repository.NewComponentRepository(mariaDB)
+		categoryRepo = repository.NewCategoryRepository(mariaDB)
+		priceRepo = repository.NewPriceRepository(mariaDB)
+		alertRepo = repository.NewAlertRepository(mariaDB)
+		statsRepo = repository.NewStatsRepository(mariaDB)
+		pricelistRepo = repository.NewPricelistRepository(mariaDB)
+	} else {
+		// In offline mode, we'll use nil repositories or handle them differently
+		// This is handled in the sync service and other components
+	}

 	// Services
-	pricingService := pricing.NewService(componentRepo, priceRepo, cfg.Pricing)
-	componentService := services.NewComponentService(componentRepo, categoryRepo, statsRepo)
-	quoteService := services.NewQuoteService(componentRepo, statsRepo, pricingService)
-	exportService := services.NewExportService(cfg.Export, categoryRepo)
-	alertService := alerts.NewService(alertRepo, componentRepo, priceRepo, statsRepo, cfg.Alerts, cfg.Pricing)
-	pricelistService := pricelist.NewService(db, pricelistRepo, componentRepo)
-	syncService := sync.NewService(pricelistRepo, configRepo, local)
+	var pricingService *pricing.Service
+	var componentService *services.ComponentService
+	var quoteService *services.QuoteService
+	var exportService *services.ExportService
+	var alertService *alerts.Service
+	var pricelistService *pricelist.Service
+	var syncService *sync.Service
+
+	// Sync service always uses ConnectionManager (works offline and online)
+	syncService = sync.NewService(connMgr, local)
+
+	if mariaDB != nil {
+		pricingService = pricing.NewService(componentRepo, priceRepo, cfg.Pricing)
+		componentService = services.NewComponentService(componentRepo, categoryRepo, statsRepo)
+		quoteService = services.NewQuoteService(componentRepo, statsRepo, pricingService)
+		exportService = services.NewExportService(cfg.Export, categoryRepo)
+		alertService = alerts.NewService(alertRepo, componentRepo, priceRepo, statsRepo, cfg.Alerts, cfg.Pricing)
+		pricelistService = pricelist.NewService(mariaDB, pricelistRepo, componentRepo)
+	} else {
+		// In offline mode, we still need to create services that don't require DB
+		pricingService = pricing.NewService(nil, nil, cfg.Pricing)
+		componentService = services.NewComponentService(nil, nil, nil)
+		quoteService = services.NewQuoteService(nil, nil, pricingService)
+		exportService = services.NewExportService(cfg.Export, nil)
+		alertService = alerts.NewService(nil, nil, nil, nil, cfg.Alerts, cfg.Pricing)
+		pricelistService = pricelist.NewService(nil, nil, nil)
+	}

 	// isOnline function for local-first architecture
 	isOnline := func() bool {
-		sqlDB, err := db.DB()
-		if err != nil {
-			return false
-		}
-		return sqlDB.Ping() == nil
+		return connMgr.IsOnline()
 	}

 	// Local-first configuration service (replaces old ConfigurationService)
 	configService := services.NewLocalConfigurationService(local, syncService, quoteService, isOnline)

+	// Use filepath.Join for cross-platform path compatibility
+	templatesPath := filepath.Join("web", "templates")
+
 	// Handlers
-	componentHandler := handlers.NewComponentHandler(componentService)
+	componentHandler := handlers.NewComponentHandler(componentService, local)
 	quoteHandler := handlers.NewQuoteHandler(quoteService)
 	exportHandler := handlers.NewExportHandler(exportService, configService, componentService)
-	pricingHandler := handlers.NewPricingHandler(db, pricingService, alertService, componentRepo, priceRepo, statsRepo)
+	pricingHandler := handlers.NewPricingHandler(mariaDB, pricingService, alertService, componentRepo, priceRepo, statsRepo)
 	pricelistHandler := handlers.NewPricelistHandler(pricelistService, local)
-	syncHandler, err := handlers.NewSyncHandler(local, syncService, db, "web/templates")
+	syncHandler, err := handlers.NewSyncHandler(local, syncService, connMgr, templatesPath)
 	if err != nil {
 		return nil, nil, fmt.Errorf("creating sync handler: %w", err)
 	}

 	// Setup handler (for reconfiguration) - no restart signal in normal mode
-	setupHandler, err := handlers.NewSetupHandler(local, "web/templates", nil)
+	setupHandler, err := handlers.NewSetupHandler(local, connMgr, templatesPath, nil)
 	if err != nil {
 		return nil, nil, fmt.Errorf("creating setup handler: %w", err)
 	}

 	// Web handler (templates)
-	webHandler, err := handlers.NewWebHandler("web/templates", componentService)
+	webHandler, err := handlers.NewWebHandler(templatesPath, componentService)
 	if err != nil {
 		return nil, nil, err
 	}
@@ -367,10 +441,11 @@ func setupRouter(db *gorm.DB, cfg *config.Config, local *localdb.LocalDB, dbUser
 	router.Use(gin.Recovery())
 	router.Use(requestLogger())
 	router.Use(middleware.CORS())
-	router.Use(middleware.OfflineDetector(db, local))
+	router.Use(middleware.OfflineDetector(connMgr, local))

-	// Static files
-	router.Static("/static", "web/static")
+	// Static files (use filepath.Join for Windows compatibility)
+	staticPath := filepath.Join("web", "static")
+	router.Static("/static", staticPath)

 	// Health check
 	router.GET("/health", func(c *gin.Context) {
@@ -380,25 +455,43 @@ func setupRouter(db *gorm.DB, cfg *config.Config, local *localdb.LocalDB, dbUser
 		})
 	})

+	// Restart endpoint (for development purposes)
+	router.POST("/api/restart", func(c *gin.Context) {
+		// This will cause the server to restart by exiting
+		// The restartProcess function will be called to restart the process
+		slog.Info("Restart requested via API")
+		go func() {
+			time.Sleep(100 * time.Millisecond)
+			restartProcess()
+		}()
+		c.JSON(http.StatusOK, gin.H{"message": "restarting..."})
+	})
+
 	// DB status endpoint
 	router.GET("/api/db-status", func(c *gin.Context) {
 		var lotCount, lotLogCount, metadataCount int64
-		var dbOK bool = true
+		var dbOK bool = false
 		var dbError string

-		sqlDB, err := db.DB()
-		if err != nil {
-			dbOK = false
-			dbError = err.Error()
-		} else if err := sqlDB.Ping(); err != nil {
-			dbOK = false
-			dbError = err.Error()
+		// Check if connection exists (fast check, no reconnect attempt)
+		status := connMgr.GetStatus()
+		if status.IsConnected {
+			// Already connected, safe to use
+			if db, err := connMgr.GetDB(); err == nil && db != nil {
+				dbOK = true
+				db.Table("lot").Count(&lotCount)
+				db.Table("lot_log").Count(&lotLogCount)
+				db.Table("qt_lot_metadata").Count(&metadataCount)
+			}
+		} else {
+			// Not connected - don't try to reconnect on status check
+			// This prevents 3s timeout on every request
+			dbError = "Database not connected (offline mode)"
+			if status.LastError != "" {
+				dbError = status.LastError
+			}
 		}

-		db.Table("lot").Count(&lotCount)
-		db.Table("lot_log").Count(&lotLogCount)
-		db.Table("qt_lot_metadata").Count(&metadataCount)
-
 		c.JSON(http.StatusOK, gin.H{
 			"connected":      dbOK,
 			"error":          dbError,
@@ -658,6 +751,25 @@ func restartProcess() {
 	}
 }

+func openBrowser(url string) error {
+	var cmd string
+	var args []string
+
+	switch runtime.GOOS {
+	case "windows":
+		cmd = "cmd"
+		args = []string{"/c", "start", url}
+	case "darwin":
+		cmd = "open"
+		args = []string{url}
+	default: // "linux", "freebsd", "openbsd", "netbsd"
+		cmd = "xdg-open"
+		args = []string{url}
+	}
+
+	return exec.Command(cmd, args...).Start()
+}
+
 func requestLogger() gin.HandlerFunc {
 	return func(c *gin.Context) {
 		start := time.Now()
--- a/config.example.yaml
+++ b/config.example.yaml
@@ -2,7 +2,7 @@
 # Copy this file to config.yaml and update values

 server:
-  host: "0.0.0.0"
+  host: "127.0.0.1"  # Use 0.0.0.0 to listen on all interfaces
  port: 8080
  mode: "release"  # debug | release
  read_timeout: "30s"
--- a/internal/config/config.go
+++ b/internal/config/config.go
@@ -106,7 +106,7 @@ func Load(path string) (*Config, error) {

 func (c *Config) setDefaults() {
 	if c.Server.Host == "" {
-		c.Server.Host = "0.0.0.0"
+		c.Server.Host = "127.0.0.1"
 	}
 	if c.Server.Port == 0 {
 		c.Server.Port = 8080
--- a/internal/db/connection.go
+++ b/internal/db/connection.go
@@ -0,0 +1,328 @@
+package db
+
+import (
+	"context"
+	"fmt"
+	"sync"
+	"time"
+
+	"git.mchus.pro/mchus/quoteforge/internal/localdb"
+	"gorm.io/driver/mysql"
+	"gorm.io/gorm"
+	"gorm.io/gorm/logger"
+)
+
+const (
+	defaultConnectTimeout    = 5 * time.Second
+	defaultPingInterval      = 30 * time.Second
+	defaultReconnectCooldown = 10 * time.Second
+
+	maxOpenConns    = 10
+	maxIdleConns    = 2
+	connMaxLifetime = 5 * time.Minute
+)
+
+// ConnectionStatus represents the current status of the database connection
+type ConnectionStatus struct {
+	IsConnected bool
+	LastCheck   time.Time
+	LastError   string // empty if no error
+	DSNHost     string // host:port for display (without password!)
+}
+
+// ConnectionManager manages database connections with thread-safety and connection pooling
+type ConnectionManager struct {
+	localDB    *localdb.LocalDB  // for getting DSN from settings
+	mu         sync.RWMutex      // protects db and state
+	db         *gorm.DB          // current connection (nil if not connected)
+	lastError  error             // last connection error
+	lastCheck  time.Time         // time of last check/attempt
+	connectTimeout    time.Duration  // timeout for connection (default: 5s)
+	pingInterval      time.Duration  // minimum interval between pings (default: 30s)
+	reconnectCooldown time.Duration  // pause after failed attempt (default: 10s)
+}
+
+// NewConnectionManager creates a new ConnectionManager instance
+func NewConnectionManager(localDB *localdb.LocalDB) *ConnectionManager {
+	return &ConnectionManager{
+		localDB:           localDB,
+		connectTimeout:    defaultConnectTimeout,
+		pingInterval:      defaultPingInterval,
+		reconnectCooldown: defaultReconnectCooldown,
+		db:                nil,
+		lastError:         nil,
+		lastCheck:         time.Time{},
+	}
+}
+
+// GetDB returns the current database connection, establishing it if needed
+// Thread-safe and respects connection cooldowns
+func (cm *ConnectionManager) GetDB() (*gorm.DB, error) {
+	// Handle case where localDB is nil
+	if cm.localDB == nil {
+		return nil, fmt.Errorf("local database not initialized")
+	}
+
+	// First check if we already have a valid connection
+	cm.mu.RLock()
+	if cm.db != nil {
+		// Check if connection is still valid and within ping interval
+		if time.Since(cm.lastCheck) < cm.pingInterval {
+			cm.mu.RUnlock()
+			return cm.db, nil
+		}
+	}
+	cm.mu.RUnlock()
+
+	// Upgrade to write lock
+	cm.mu.Lock()
+	defer cm.mu.Unlock()
+
+	// Double-check: someone else might have connected while we were waiting for the write lock
+	if cm.db != nil {
+		// Check if connection is still valid and within ping interval
+		if time.Since(cm.lastCheck) < cm.pingInterval {
+			return cm.db, nil
+		}
+	}
+
+	// Check if we're in cooldown period after a failed attempt
+	if cm.lastError != nil && time.Since(cm.lastCheck) < cm.reconnectCooldown {
+		return nil, cm.lastError
+	}
+
+	// Attempt to connect
+	err := cm.connect()
+	if err != nil {
+		cm.lastError = err
+		cm.lastCheck = time.Now()
+		return nil, err
+	}
+
+	// Update last check time and return success
+	cm.lastCheck = time.Now()
+	cm.lastError = nil
+	return cm.db, nil
+}
+
+// connect establishes a new database connection
+func (cm *ConnectionManager) connect() error {
+	// Get DSN from local settings
+	dsn, err := cm.localDB.GetDSN()
+	if err != nil {
+		return fmt.Errorf("getting DSN: %w", err)
+	}
+
+	// Create context with timeout
+	ctx, cancel := context.WithTimeout(context.Background(), cm.connectTimeout)
+	defer cancel()
+
+	// Open database connection
+	db, err := gorm.Open(mysql.Open(dsn), &gorm.Config{
+		Logger: logger.Default.LogMode(logger.Silent),
+	})
+	if err != nil {
+		return fmt.Errorf("opening database connection: %w", err)
+	}
+
+	// Test the connection
+	sqlDB, err := db.DB()
+	if err != nil {
+		return fmt.Errorf("getting sql.DB: %w", err)
+	}
+
+	// Ping with timeout
+	if err = sqlDB.PingContext(ctx); err != nil {
+		return fmt.Errorf("pinging database: %w", err)
+	}
+
+	// Set connection pool settings
+	sqlDB.SetMaxOpenConns(maxOpenConns)
+	sqlDB.SetMaxIdleConns(maxIdleConns)
+	sqlDB.SetConnMaxLifetime(connMaxLifetime)
+
+	// Store the connection
+	cm.db = db
+
+	return nil
+}
+
+// IsOnline checks if the database is currently connected and responsive
+// Does not attempt to reconnect, only checks current state with caching
+func (cm *ConnectionManager) IsOnline() bool {
+	cm.mu.RLock()
+	if cm.db == nil {
+		cm.mu.RUnlock()
+		return false
+	}
+
+	// If we've checked recently, return cached result
+	if time.Since(cm.lastCheck) < cm.pingInterval {
+		cm.mu.RUnlock()
+		return true
+	}
+	cm.mu.RUnlock()
+
+	// Need to perform actual ping
+	cm.mu.Lock()
+	defer cm.mu.Unlock()
+
+	// Double-check after acquiring write lock
+	if cm.db == nil {
+		return false
+	}
+
+	// Perform ping with timeout
+	ctx, cancel := context.WithTimeout(context.Background(), cm.connectTimeout)
+	defer cancel()
+
+	sqlDB, err := cm.db.DB()
+	if err != nil {
+		cm.lastError = err
+		cm.lastCheck = time.Now()
+		cm.db = nil
+		return false
+	}
+
+	if err = sqlDB.PingContext(ctx); err != nil {
+		cm.lastError = err
+		cm.lastCheck = time.Now()
+		cm.db = nil
+		return false
+	}
+
+	// Update last check time and return success
+	cm.lastCheck = time.Now()
+	cm.lastError = nil
+	return true
+}
+
+// TryConnect forces a new connection attempt (for UI "Reconnect" button)
+// Ignores cooldown period
+func (cm *ConnectionManager) TryConnect() error {
+	cm.mu.Lock()
+	defer cm.mu.Unlock()
+
+	// Attempt to connect
+	err := cm.connect()
+	if err != nil {
+		cm.lastError = err
+		cm.lastCheck = time.Now()
+		return err
+	}
+
+	// Update last check time and clear error
+	cm.lastCheck = time.Now()
+	cm.lastError = nil
+	return nil
+}
+
+// Disconnect closes the current database connection
+func (cm *ConnectionManager) Disconnect() {
+	cm.mu.Lock()
+	defer cm.mu.Unlock()
+
+	if cm.db != nil {
+		sqlDB, err := cm.db.DB()
+		if err == nil {
+			sqlDB.Close()
+		}
+	}
+	cm.db = nil
+	cm.lastError = nil
+}
+
+// GetLastError returns the last connection error (thread-safe)
+func (cm *ConnectionManager) GetLastError() error {
+	cm.mu.RLock()
+	defer cm.mu.RUnlock()
+	return cm.lastError
+}
+
+// GetStatus returns the current connection status
+func (cm *ConnectionManager) GetStatus() ConnectionStatus {
+	cm.mu.RLock()
+	defer cm.mu.RUnlock()
+
+	status := ConnectionStatus{
+		IsConnected: cm.db != nil,
+		LastCheck:   cm.lastCheck,
+		LastError:   "",
+		DSNHost:     "",
+	}
+
+	if cm.lastError != nil {
+		status.LastError = cm.lastError.Error()
+	}
+
+	// Extract host from DSN for display
+	if cm.localDB != nil {
+		if dsn, err := cm.localDB.GetDSN(); err == nil {
+			// Parse DSN to extract host:port
+			// Format: user:password@tcp(host:port)/database?...
+			status.DSNHost = extractHostFromDSN(dsn)
+		}
+	}
+
+	return status
+}
+
+// extractHostFromDSN extracts the host:port part from a DSN string
+func extractHostFromDSN(dsn string) string {
+	// Find the tcp( part
+	tcpStart := 0
+	if tcpStart = len("tcp("); tcpStart < len(dsn) && dsn[tcpStart] == '(' {
+		// Look for the closing parenthesis
+		parenEnd := -1
+		for i := tcpStart + 1; i < len(dsn); i++ {
+			if dsn[i] == ')' {
+				parenEnd = i
+				break
+			}
+		}
+		if parenEnd != -1 {
+			// Extract host:port part between tcp( and )
+			hostPort := dsn[tcpStart+1:parenEnd]
+			return hostPort
+		}
+	}
+
+	// Fallback: try to find host:port by looking for @tcp( pattern
+	atIndex := -1
+	for i := 0; i < len(dsn)-4; i++ {
+		if dsn[i:i+4] == "@tcp" {
+			atIndex = i
+			break
+		}
+	}
+
+	if atIndex != -1 {
+		// Look for the opening parenthesis after @tcp
+		parenStart := -1
+		for i := atIndex + 4; i < len(dsn); i++ {
+			if dsn[i] == '(' {
+				parenStart = i
+				break
+			}
+		}
+
+		if parenStart != -1 {
+			// Look for the closing parenthesis
+			parenEnd := -1
+			for i := parenStart + 1; i < len(dsn); i++ {
+				if dsn[i] == ')' {
+					parenEnd = i
+					break
+				}
+			}
+
+			if parenEnd != -1 {
+				hostPort := dsn[parenStart+1:parenEnd]
+				return hostPort
+			}
+		}
+	}
+
+	// If we can't parse it, return empty string
+	return ""
+}
--- a/internal/handlers/component.go
+++ b/internal/handlers/component.go
@@ -5,16 +5,21 @@ import (
 	"strconv"

 	"github.com/gin-gonic/gin"
+	"git.mchus.pro/mchus/quoteforge/internal/localdb"
 	"git.mchus.pro/mchus/quoteforge/internal/repository"
 	"git.mchus.pro/mchus/quoteforge/internal/services"
 )

 type ComponentHandler struct {
 	componentService *services.ComponentService
+	localDB          *localdb.LocalDB
 }

-func NewComponentHandler(componentService *services.ComponentService) *ComponentHandler {
-	return &ComponentHandler{componentService: componentService}
+func NewComponentHandler(componentService *services.ComponentService, localDB *localdb.LocalDB) *ComponentHandler {
+	return &ComponentHandler{
+		componentService: componentService,
+		localDB:          localDB,
+	}
 }

 func (h *ComponentHandler) List(c *gin.Context) {
@@ -34,6 +39,40 @@ func (h *ComponentHandler) List(c *gin.Context) {
 		return
 	}

+	// If offline mode (empty result), fallback to local components
+	if result.Total == 0 && h.localDB != nil {
+		localFilter := localdb.ComponentFilter{
+			Category: filter.Category,
+			Search:   filter.Search,
+			HasPrice: filter.HasPrice,
+		}
+
+		offset := (page - 1) * perPage
+		localComps, total, err := h.localDB.ListComponents(localFilter, offset, perPage)
+		if err == nil && len(localComps) > 0 {
+			// Convert local components to ComponentView format
+			components := make([]services.ComponentView, len(localComps))
+			for i, lc := range localComps {
+				components[i] = services.ComponentView{
+					LotName:      lc.LotName,
+					Description:  lc.LotDescription,
+					Category:     lc.Category,
+					CategoryName: lc.Category, // No translation in local mode
+					Model:        lc.Model,
+					CurrentPrice: lc.CurrentPrice,
+				}
+			}
+
+			c.JSON(http.StatusOK, &services.ComponentListResult{
+				Components: components,
+				Total:      total,
+				Page:       page,
+				PerPage:    perPage,
+			})
+			return
+		}
+	}
+
 	c.JSON(http.StatusOK, result)
 }

--- a/internal/handlers/pricelist.go
+++ b/internal/handlers/pricelist.go
@@ -29,6 +29,36 @@ func (h *PricelistHandler) List(c *gin.Context) {
 		return
 	}

+	// If offline (empty list), fallback to local pricelists
+	if total == 0 && h.localDB != nil {
+		localPLs, err := h.localDB.GetLocalPricelists()
+		if err == nil && len(localPLs) > 0 {
+			// Convert to PricelistSummary format
+			summaries := make([]map[string]interface{}, len(localPLs))
+			for i, lpl := range localPLs {
+				summaries[i] = map[string]interface{}{
+					"id":          lpl.ServerID,
+					"version":     lpl.Version,
+					"created_by":  "sync",
+					"item_count":  0, // Not tracked
+					"usage_count": 0, // Not tracked in local
+					"is_active":   true,
+					"created_at":  lpl.CreatedAt,
+					"synced_from": "local",
+				}
+			}
+
+			c.JSON(http.StatusOK, gin.H{
+				"pricelists": summaries,
+				"total":      len(summaries),
+				"page":       page,
+				"per_page":   perPage,
+				"offline":    true,
+			})
+			return
+		}
+	}
+
 	c.JSON(http.StatusOK, gin.H{
 		"pricelists": pricelists,
 		"total":      total,
@@ -124,9 +154,33 @@ func (h *PricelistHandler) CanWrite(c *gin.Context) {

 // GetLatest returns the most recent active pricelist
 func (h *PricelistHandler) GetLatest(c *gin.Context) {
+	// Try to get from server first
 	pl, err := h.service.GetLatestActive()
 	if err != nil {
-		c.JSON(http.StatusNotFound, gin.H{"error": "no active pricelists found"})
+		// If offline or no server pricelists, try to get from local cache
+		if h.localDB == nil {
+			c.JSON(http.StatusNotFound, gin.H{"error": "no database available"})
+			return
+		}
+		localPL, localErr := h.localDB.GetLatestLocalPricelist()
+		if localErr != nil {
+			// No local pricelists either
+			c.JSON(http.StatusNotFound, gin.H{
+				"error":       "no pricelists available",
+				"local_error": localErr.Error(),
+			})
+			return
+		}
+		// Return local pricelist
+		c.JSON(http.StatusOK, gin.H{
+			"id":          localPL.ServerID,
+			"version":     localPL.Version,
+			"created_by":  "sync",
+			"item_count":  0, // Not tracked in local pricelists
+			"is_active":   true,
+			"created_at":  localPL.CreatedAt,
+			"synced_from": "local",
+		})
 		return
 	}

--- a/internal/handlers/pricing.go
+++ b/internal/handlers/pricing.go
@@ -68,6 +68,17 @@ func NewPricingHandler(
 }

 func (h *PricingHandler) GetStats(c *gin.Context) {
+	// Check if we're in offline mode
+	if h.statsRepo == nil || h.alertService == nil {
+		c.JSON(http.StatusOK, gin.H{
+			"new_alerts_count":    0,
+			"top_components":      []interface{}{},
+			"trending_components": []interface{}{},
+			"offline":             true,
+		})
+		return
+	}
+
 	newAlerts, _ := h.alertService.GetNewAlertsCount()
 	topComponents, _ := h.statsRepo.GetTopComponents(10)
 	trendingComponents, _ := h.statsRepo.GetTrendingComponents(10)
@@ -86,6 +97,19 @@ type ComponentWithCount struct {
 }

 func (h *PricingHandler) ListComponents(c *gin.Context) {
+	// Check if we're in offline mode
+	if h.componentRepo == nil {
+		c.JSON(http.StatusOK, gin.H{
+			"components": []ComponentWithCount{},
+			"total":      0,
+			"page":       1,
+			"per_page":   20,
+			"offline":    true,
+			"message":    "Управление ценами доступно только в онлайн режиме",
+		})
+		return
+	}
+
 	page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
 	perPage, _ := strconv.Atoi(c.DefaultQuery("per_page", "20"))

@@ -213,6 +237,15 @@ func (h *PricingHandler) expandMetaPrices(metaPrices, excludeLot string) []strin
 }

 func (h *PricingHandler) GetComponentPricing(c *gin.Context) {
+	// Check if we're in offline mode
+	if h.componentRepo == nil || h.pricingService == nil {
+		c.JSON(http.StatusServiceUnavailable, gin.H{
+			"error":   "Управление ценами доступно только в онлайн режиме",
+			"offline": true,
+		})
+		return
+	}
+
 	lotName := c.Param("lot_name")

 	component, err := h.componentRepo.GetByLotName(lotName)
@@ -248,6 +281,15 @@ type UpdatePriceRequest struct {
 }

 func (h *PricingHandler) UpdatePrice(c *gin.Context) {
+	// Check if we're in offline mode
+	if h.db == nil {
+		c.JSON(http.StatusServiceUnavailable, gin.H{
+			"error":   "Обновление цен доступно только в онлайн режиме",
+			"offline": true,
+		})
+		return
+	}
+
 	var req UpdatePriceRequest
 	if err := c.ShouldBindJSON(&req); err != nil {
 		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
@@ -409,6 +451,15 @@ func (h *PricingHandler) recalculateSinglePrice(lotName string) {
 }

 func (h *PricingHandler) RecalculateAll(c *gin.Context) {
+	// Check if we're in offline mode
+	if h.db == nil {
+		c.JSON(http.StatusServiceUnavailable, gin.H{
+			"error":   "Пересчёт цен доступен только в онлайн режиме",
+			"offline": true,
+		})
+		return
+	}
+
 	// Set headers for SSE
 	c.Header("Content-Type", "text/event-stream")
 	c.Header("Cache-Control", "no-cache")
@@ -588,6 +639,18 @@ func (h *PricingHandler) RecalculateAll(c *gin.Context) {
 }

 func (h *PricingHandler) ListAlerts(c *gin.Context) {
+	// Check if we're in offline mode
+	if h.db == nil {
+		c.JSON(http.StatusOK, gin.H{
+			"alerts":   []interface{}{},
+			"total":    0,
+			"page":     1,
+			"per_page": 20,
+			"offline":  true,
+		})
+		return
+	}
+
 	page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
 	perPage, _ := strconv.Atoi(c.DefaultQuery("per_page", "20"))

@@ -613,6 +676,15 @@ func (h *PricingHandler) ListAlerts(c *gin.Context) {
 }

 func (h *PricingHandler) AcknowledgeAlert(c *gin.Context) {
+	// Check if we're in offline mode
+	if h.db == nil {
+		c.JSON(http.StatusServiceUnavailable, gin.H{
+			"error":   "Управление алертами доступно только в онлайн режиме",
+			"offline": true,
+		})
+		return
+	}
+
 	id, err := strconv.ParseUint(c.Param("id"), 10, 32)
 	if err != nil {
 		c.JSON(http.StatusBadRequest, gin.H{"error": "invalid alert id"})
@@ -628,6 +700,15 @@ func (h *PricingHandler) AcknowledgeAlert(c *gin.Context) {
 }

 func (h *PricingHandler) ResolveAlert(c *gin.Context) {
+	// Check if we're in offline mode
+	if h.db == nil {
+		c.JSON(http.StatusServiceUnavailable, gin.H{
+			"error":   "Управление алертами доступно только в онлайн режиме",
+			"offline": true,
+		})
+		return
+	}
+
 	id, err := strconv.ParseUint(c.Param("id"), 10, 32)
 	if err != nil {
 		c.JSON(http.StatusBadRequest, gin.H{"error": "invalid alert id"})
@@ -643,6 +724,15 @@ func (h *PricingHandler) ResolveAlert(c *gin.Context) {
 }

 func (h *PricingHandler) IgnoreAlert(c *gin.Context) {
+	// Check if we're in offline mode
+	if h.db == nil {
+		c.JSON(http.StatusServiceUnavailable, gin.H{
+			"error":   "Управление алертами доступно только в онлайн режиме",
+			"offline": true,
+		})
+		return
+	}
+
 	id, err := strconv.ParseUint(c.Param("id"), 10, 32)
 	if err != nil {
 		c.JSON(http.StatusBadRequest, gin.H{"error": "invalid alert id"})
@@ -667,6 +757,15 @@ type PreviewPriceRequest struct {
 }

 func (h *PricingHandler) PreviewPrice(c *gin.Context) {
+	// Check if we're in offline mode
+	if h.db == nil {
+		c.JSON(http.StatusServiceUnavailable, gin.H{
+			"error":   "Предпросмотр цены доступен только в онлайн режиме",
+			"offline": true,
+		})
+		return
+	}
+
 	var req PreviewPriceRequest
 	if err := c.ShouldBindJSON(&req); err != nil {
 		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
@@ -708,8 +807,8 @@ func (h *PricingHandler) PreviewPrice(c *gin.Context) {
 		medianAllTime = &median
 	}

-	// Get quote count (from all relevant lots)
-	var quoteCount int64
+	// Get quote count (from all relevant lots) - total count
+	var quoteCountTotal int64
 	for _, lotName := range lotNames {
 		var count int64
 		if strings.HasSuffix(lotName, "*") {
@@ -718,7 +817,25 @@ func (h *PricingHandler) PreviewPrice(c *gin.Context) {
 		} else {
 			h.db.Model(&models.LotLog{}).Where("lot = ?", lotName).Count(&count)
 		}
-		quoteCount += count
+		quoteCountTotal += count
+	}
+
+	// Get quote count for specified period (if period is > 0)
+	var quoteCountPeriod int64
+	if req.PeriodDays > 0 {
+		for _, lotName := range lotNames {
+			var count int64
+			if strings.HasSuffix(lotName, "*") {
+				pattern := strings.TrimSuffix(lotName, "*") + "%"
+				h.db.Raw(`SELECT COUNT(*) FROM lot_log WHERE lot LIKE ? AND date >= DATE_SUB(NOW(), INTERVAL ? DAY)`, pattern, req.PeriodDays).Scan(&count)
+			} else {
+				h.db.Raw(`SELECT COUNT(*) FROM lot_log WHERE lot = ? AND date >= DATE_SUB(NOW(), INTERVAL ? DAY)`, lotName, req.PeriodDays).Scan(&count)
+			}
+			quoteCountPeriod += count
+		}
+	} else {
+		// If no period specified, period count equals total count
+		quoteCountPeriod = quoteCountTotal
 	}

 	// Get last received price (from the main lot only)
@@ -773,14 +890,15 @@ func (h *PricingHandler) PreviewPrice(c *gin.Context) {
 	}

 	c.JSON(http.StatusOK, gin.H{
-		"lot_name":        req.LotName,
-		"current_price":   comp.CurrentPrice,
-		"median_all_time": medianAllTime,
-		"new_price":       newPrice,
-		"quote_count":     quoteCount,
-		"manual_price":    comp.ManualPrice,
-		"last_price":      lastPrice.Price,
-		"last_price_date": lastPrice.Date,
+		"lot_name":           req.LotName,
+		"current_price":      comp.CurrentPrice,
+		"median_all_time":    medianAllTime,
+		"new_price":          newPrice,
+		"quote_count_total":  quoteCountTotal,
+		"quote_count_period": quoteCountPeriod,
+		"manual_price":       comp.ManualPrice,
+		"last_price":         lastPrice.Price,
+		"last_price_date":    lastPrice.Date,
 	})
 }

--- a/internal/handlers/setup.go
+++ b/internal/handlers/setup.go
@@ -3,12 +3,14 @@ package handlers
 import (
 	"fmt"
 	"html/template"
+	"log/slog"
 	"net/http"
 	"path/filepath"
 	"strconv"
 	"time"

 	"github.com/gin-gonic/gin"
+	"git.mchus.pro/mchus/quoteforge/internal/db"
 	"git.mchus.pro/mchus/quoteforge/internal/localdb"
 	"gorm.io/driver/mysql"
 	"gorm.io/gorm"
@@ -17,11 +19,12 @@ import (

 type SetupHandler struct {
 	localDB    *localdb.LocalDB
+	connMgr    *db.ConnectionManager
 	templates  map[string]*template.Template
 	restartSig chan struct{}
 }

-func NewSetupHandler(localDB *localdb.LocalDB, templatesPath string, restartSig chan struct{}) (*SetupHandler, error) {
+func NewSetupHandler(localDB *localdb.LocalDB, connMgr *db.ConnectionManager, templatesPath string, restartSig chan struct{}) (*SetupHandler, error) {
 	funcMap := template.FuncMap{
 		"sub": func(a, b int) int { return a - b },
 		"add": func(a, b int) int { return a + b },
@@ -39,6 +42,7 @@ func NewSetupHandler(localDB *localdb.LocalDB, templatesPath string, restartSig

 	return &SetupHandler{
 		localDB:    localDB,
+		connMgr:    connMgr,
 		templates:  templates,
 		restartSig: restartSig,
 	}, nil
@@ -181,12 +185,23 @@ func (h *SetupHandler) SaveConnection(c *gin.Context) {
 		return
 	}

+	// Try to connect immediately to verify settings
+	if h.connMgr != nil {
+		if err := h.connMgr.TryConnect(); err != nil {
+			slog.Warn("failed to connect after saving settings", "error", err)
+		} else {
+			slog.Info("successfully connected to database after saving settings")
+		}
+	}
+
+	// Always restart to properly initialize all services with the new connection
 	c.JSON(http.StatusOK, gin.H{
 		"success": true,
-		"message": "Settings saved. Restarting application...",
+		"message": "Settings saved. Please restart the application to apply changes.",
+		"restart_required": true,
 	})

-	// Signal restart after response is sent
+	// Signal restart after response is sent (if restart signal is configured)
 	if h.restartSig != nil {
 		go func() {
 			time.Sleep(500 * time.Millisecond) // Give time for response to be sent
--- a/internal/handlers/sync.go
+++ b/internal/handlers/sync.go
@@ -8,21 +8,21 @@ import (
 	"time"

 	"github.com/gin-gonic/gin"
+	"git.mchus.pro/mchus/quoteforge/internal/db"
 	"git.mchus.pro/mchus/quoteforge/internal/localdb"
 	"git.mchus.pro/mchus/quoteforge/internal/services/sync"
-	"gorm.io/gorm"
 )

 // SyncHandler handles sync API endpoints
 type SyncHandler struct {
 	localDB     *localdb.LocalDB
 	syncService *sync.Service
-	mariaDB     *gorm.DB
+	connMgr     *db.ConnectionManager
 	tmpl        *template.Template
 }

 // NewSyncHandler creates a new sync handler
-func NewSyncHandler(localDB *localdb.LocalDB, syncService *sync.Service, mariaDB *gorm.DB, templatesPath string) (*SyncHandler, error) {
+func NewSyncHandler(localDB *localdb.LocalDB, syncService *sync.Service, connMgr *db.ConnectionManager, templatesPath string) (*SyncHandler, error) {
 	// Load sync_status partial template
 	partialPath := filepath.Join(templatesPath, "partials", "sync_status.html")
 	tmpl, err := template.ParseFiles(partialPath)
@@ -33,7 +33,7 @@ func NewSyncHandler(localDB *localdb.LocalDB, syncService *sync.Service, mariaDB
 	return &SyncHandler{
 		localDB:     localDB,
 		syncService: syncService,
-		mariaDB:     mariaDB,
+		connMgr:     connMgr,
 		tmpl:        tmpl,
 	}, nil
 }
@@ -109,7 +109,17 @@ func (h *SyncHandler) SyncComponents(c *gin.Context) {
 		return
 	}

-	result, err := h.localDB.SyncComponents(h.mariaDB)
+	// Get database connection from ConnectionManager
+	mariaDB, err := h.connMgr.GetDB()
+	if err != nil {
+		c.JSON(http.StatusServiceUnavailable, gin.H{
+			"success": false,
+			"error":   "Database connection failed: " + err.Error(),
+		})
+		return
+	}
+
+	result, err := h.localDB.SyncComponents(mariaDB)
 	if err != nil {
 		slog.Error("component sync failed", "error", err)
 		c.JSON(http.StatusInternalServerError, gin.H{
@@ -181,7 +191,16 @@ func (h *SyncHandler) SyncAll(c *gin.Context) {
 	var componentsSynced, pricelistsSynced int

 	// Sync components
-	compResult, err := h.localDB.SyncComponents(h.mariaDB)
+	mariaDB, err := h.connMgr.GetDB()
+	if err != nil {
+		c.JSON(http.StatusServiceUnavailable, gin.H{
+			"success": false,
+			"error":   "Database connection failed: " + err.Error(),
+		})
+		return
+	}
+
+	compResult, err := h.localDB.SyncComponents(mariaDB)
 	if err != nil {
 		slog.Error("component sync failed during full sync", "error", err)
 		c.JSON(http.StatusInternalServerError, gin.H{
@@ -215,16 +234,7 @@ func (h *SyncHandler) SyncAll(c *gin.Context) {

 // checkOnline checks if MariaDB is accessible
 func (h *SyncHandler) checkOnline() bool {
-	sqlDB, err := h.mariaDB.DB()
-	if err != nil {
-		return false
-	}
-
-	if err := sqlDB.Ping(); err != nil {
-		return false
-	}
-
-	return true
+	return h.connMgr.IsOnline()
 }

 // PushPendingChanges pushes all pending changes to the server
--- a/internal/localdb/components.go
+++ b/internal/localdb/components.go
@@ -9,6 +9,13 @@ import (
 	"gorm.io/gorm"
 )

+// ComponentFilter for searching with filters
+type ComponentFilter struct {
+	Category string
+	Search   string
+	HasPrice bool
+}
+
 // ComponentSyncResult contains statistics from component sync
 type ComponentSyncResult struct {
 	TotalSynced int
@@ -196,6 +203,44 @@ func (l *LocalDB) SearchLocalComponentsByCategory(category string, query string,
 	return components, err
 }

+// ListComponents returns components with filtering and pagination
+func (l *LocalDB) ListComponents(filter ComponentFilter, offset, limit int) ([]LocalComponent, int64, error) {
+	db := l.db
+
+	// Apply category filter
+	if filter.Category != "" {
+		db = db.Where("LOWER(category) = ?", strings.ToLower(filter.Category))
+	}
+
+	// Apply search filter
+	if filter.Search != "" {
+		searchPattern := "%" + strings.ToLower(filter.Search) + "%"
+		db = db.Where(
+			"LOWER(lot_name) LIKE ? OR LOWER(lot_description) LIKE ? OR LOWER(category) LIKE ? OR LOWER(model) LIKE ?",
+			searchPattern, searchPattern, searchPattern, searchPattern,
+		)
+	}
+
+	// Apply price filter
+	if filter.HasPrice {
+		db = db.Where("current_price IS NOT NULL")
+	}
+
+	// Get total count
+	var total int64
+	if err := db.Model(&LocalComponent{}).Count(&total).Error; err != nil {
+		return nil, 0, err
+	}
+
+	// Apply pagination and get results
+	var components []LocalComponent
+	if err := db.Order("lot_name").Offset(offset).Limit(limit).Find(&components).Error; err != nil {
+		return nil, 0, err
+	}
+
+	return components, total, nil
+}
+
 // GetLocalComponent returns a single component by lot_name
 func (l *LocalDB) GetLocalComponent(lotName string) (*LocalComponent, error) {
 	var component LocalComponent
@@ -266,3 +311,100 @@ func (l *LocalDB) NeedComponentSync(maxAgeHours int) bool {
 	}
 	return time.Since(*syncTime).Hours() > float64(maxAgeHours)
 }
+
+// UpdateComponentPricesFromPricelist updates current_price in local_components from pricelist items
+// This allows offline price updates using synced pricelists without MariaDB connection
+func (l *LocalDB) UpdateComponentPricesFromPricelist(pricelistID uint) (int, error) {
+	// Get all items from the specified pricelist
+	var items []LocalPricelistItem
+	if err := l.db.Where("pricelist_id = ?", pricelistID).Find(&items).Error; err != nil {
+		return 0, fmt.Errorf("fetching pricelist items: %w", err)
+	}
+
+	if len(items) == 0 {
+		slog.Warn("no items found in pricelist", "pricelist_id", pricelistID)
+		return 0, nil
+	}
+
+	// Update current_price for each component
+	updated := 0
+	err := l.db.Transaction(func(tx *gorm.DB) error {
+		for _, item := range items {
+			result := tx.Model(&LocalComponent{}).
+				Where("lot_name = ?", item.LotName).
+				Update("current_price", item.Price)
+
+			if result.Error != nil {
+				return fmt.Errorf("updating price for %s: %w", item.LotName, result.Error)
+			}
+
+			if result.RowsAffected > 0 {
+				updated++
+			}
+		}
+		return nil
+	})
+
+	if err != nil {
+		return 0, err
+	}
+
+	slog.Info("updated component prices from pricelist",
+		"pricelist_id", pricelistID,
+		"total_items", len(items),
+		"updated_components", updated)
+
+	return updated, nil
+}
+
+// EnsureComponentPricesFromPricelists loads prices from the latest pricelist into local_components
+// if no components exist or all current prices are NULL
+func (l *LocalDB) EnsureComponentPricesFromPricelists() error {
+	// Check if we have any components with prices
+	var count int64
+	if err := l.db.Model(&LocalComponent{}).Where("current_price IS NOT NULL").Count(&count).Error; err != nil {
+		return fmt.Errorf("checking component prices: %w", err)
+	}
+
+	// If we have components with prices, don't load from pricelists
+	if count > 0 {
+		return nil
+	}
+
+	// Check if we have any components at all
+	var totalComponents int64
+	if err := l.db.Model(&LocalComponent{}).Count(&totalComponents).Error; err != nil {
+		return fmt.Errorf("counting components: %w", err)
+	}
+
+	// If we have no components, we need to load them from pricelists
+	if totalComponents == 0 {
+		slog.Info("no components found in local database, loading from latest pricelist")
+		// This would typically be called from the sync service or setup process
+		// For now, we'll just return nil to indicate no action needed
+		return nil
+	}
+
+	// If we have components but no prices, we should load prices from pricelists
+	// Find the latest pricelist
+	var latestPricelist LocalPricelist
+	if err := l.db.Order("created_at DESC").First(&latestPricelist).Error; err != nil {
+		if err == gorm.ErrRecordNotFound {
+			slog.Warn("no pricelists found in local database")
+			return nil
+		}
+		return fmt.Errorf("finding latest pricelist: %w", err)
+	}
+
+	// Update prices from the latest pricelist
+	updated, err := l.UpdateComponentPricesFromPricelist(latestPricelist.ID)
+	if err != nil {
+		return fmt.Errorf("updating component prices from pricelist: %w", err)
+	}
+
+	slog.Info("loaded component prices from latest pricelist",
+		"pricelist_id", latestPricelist.ID,
+		"updated_components", updated)
+
+	return nil
+}
--- a/internal/localdb/localdb.go
+++ b/internal/localdb/localdb.go
@@ -132,7 +132,11 @@ func (l *LocalDB) GetDSN() (string, error) {
 		return "", err
 	}

-	dsn := fmt.Sprintf("%s:%s@tcp(%s:%d)/%s?charset=utf8mb4&parseTime=True&loc=Local",
+	// Add aggressive timeouts for offline-first architecture
+	// timeout: connection establishment timeout (3s)
+	// readTimeout: I/O read timeout (3s)
+	// writeTimeout: I/O write timeout (3s)
+	dsn := fmt.Sprintf("%s:%s@tcp(%s:%d)/%s?charset=utf8mb4&parseTime=True&loc=Local&timeout=3s&readTimeout=3s&writeTimeout=3s",
 		settings.User,
 		settings.PasswordEncrypted, // Contains decrypted password after GetSettings
 		settings.Host,
--- a/internal/middleware/offline.go
+++ b/internal/middleware/offline.go
@@ -4,17 +4,17 @@ import (
 	"log/slog"

 	"github.com/gin-gonic/gin"
+	"git.mchus.pro/mchus/quoteforge/internal/db"
 	"git.mchus.pro/mchus/quoteforge/internal/localdb"
-	"gorm.io/gorm"
 )

 // OfflineDetector creates middleware that detects offline mode
 // Sets context values:
 //   - "is_offline" (bool) - true if MariaDB is unavailable
 //   - "localdb" (*localdb.LocalDB) - local database instance for fallback
-func OfflineDetector(mariaDB *gorm.DB, local *localdb.LocalDB) gin.HandlerFunc {
+func OfflineDetector(connMgr *db.ConnectionManager, local *localdb.LocalDB) gin.HandlerFunc {
 	return func(c *gin.Context) {
-		isOffline := !checkMariaDBOnline(mariaDB)
+		isOffline := !connMgr.IsOnline()

 		// Set context values for handlers
 		c.Set("is_offline", isOffline)
@@ -27,17 +27,3 @@ func OfflineDetector(mariaDB *gorm.DB, local *localdb.LocalDB) gin.HandlerFunc {
 		c.Next()
 	}
 }
-
-// checkMariaDBOnline checks if MariaDB is accessible
-func checkMariaDBOnline(mariaDB *gorm.DB) bool {
-	sqlDB, err := mariaDB.DB()
-	if err != nil {
-		return false
-	}
-
-	if err := sqlDB.Ping(); err != nil {
-		return false
-	}
-
-	return true
-}
--- a/internal/services/component.go
+++ b/internal/services/component.go
@@ -1,6 +1,7 @@
 package services

 import (
+	"fmt"
 	"strings"

 	"git.mchus.pro/mchus/quoteforge/internal/models"
@@ -59,6 +60,17 @@ type ComponentView struct {
 }

 func (s *ComponentService) List(filter repository.ComponentFilter, page, perPage int) (*ComponentListResult, error) {
+	// If no database connection (offline mode), return empty list
+	// Components should be loaded via /api/sync/components first
+	if s.componentRepo == nil {
+		return &ComponentListResult{
+			Components: []ComponentView{},
+			Total:      0,
+			Page:       page,
+			PerPage:    perPage,
+		}, nil
+	}
+
 	if page < 1 {
 		page = 1
 	}
@@ -106,6 +118,11 @@ func (s *ComponentService) List(filter repository.ComponentFilter, page, perPage
 }

 func (s *ComponentService) GetByLotName(lotName string) (*ComponentView, error) {
+	// If no database connection (offline mode), return error
+	if s.componentRepo == nil {
+		return nil, fmt.Errorf("offline mode: component data not available")
+	}
+
 	c, err := s.componentRepo.GetByLotName(lotName)
 	if err != nil {
 		return nil, err
@@ -135,11 +152,20 @@ func (s *ComponentService) GetByLotName(lotName string) (*ComponentView, error)
 }

 func (s *ComponentService) GetCategories() ([]models.Category, error) {
+	// If no database connection (offline mode), return default categories
+	if s.categoryRepo == nil {
+		return models.DefaultCategories, nil
+	}
 	return s.categoryRepo.GetAll()
 }

 // ImportFromLot creates metadata entries for lots that don't have them
 func (s *ComponentService) ImportFromLot() (int, error) {
+	// If no database connection (offline mode), return error
+	if s.componentRepo == nil || s.categoryRepo == nil {
+		return 0, fmt.Errorf("offline mode: import not available")
+	}
+
 	lots, err := s.componentRepo.GetLotsWithoutMetadata()
 	if err != nil {
 		return 0, err
--- a/internal/services/pricelist/service.go
+++ b/internal/services/pricelist/service.go
@@ -26,6 +26,10 @@ func NewService(db *gorm.DB, repo *repository.PricelistRepository, componentRepo

 // CreateFromCurrentPrices creates a new pricelist by taking a snapshot of current prices
 func (s *Service) CreateFromCurrentPrices(createdBy string) (*models.Pricelist, error) {
+	if s.repo == nil || s.db == nil {
+		return nil, fmt.Errorf("offline mode: cannot create pricelists")
+	}
+
 	version, err := s.repo.GenerateVersion()
 	if err != nil {
 		return nil, fmt.Errorf("generating version: %w", err)
@@ -88,6 +92,11 @@ func (s *Service) CreateFromCurrentPrices(createdBy string) (*models.Pricelist,

 // List returns pricelists with pagination
 func (s *Service) List(page, perPage int) ([]models.PricelistSummary, int64, error) {
+	// If no database connection (offline mode), return empty list
+	if s.repo == nil {
+		return []models.PricelistSummary{}, 0, nil
+	}
+
 	if page < 1 {
 		page = 1
 	}
@@ -100,11 +109,17 @@ func (s *Service) List(page, perPage int) ([]models.PricelistSummary, int64, err

 // GetByID returns a pricelist by ID
 func (s *Service) GetByID(id uint) (*models.Pricelist, error) {
+	if s.repo == nil {
+		return nil, fmt.Errorf("offline mode: pricelist service not available")
+	}
 	return s.repo.GetByID(id)
 }

 // GetItems returns pricelist items with pagination
 func (s *Service) GetItems(pricelistID uint, page, perPage int, search string) ([]models.PricelistItem, int64, error) {
+	if s.repo == nil {
+		return []models.PricelistItem{}, 0, nil
+	}
 	if page < 1 {
 		page = 1
 	}
@@ -117,26 +132,42 @@ func (s *Service) GetItems(pricelistID uint, page, perPage int, search string) (

 // Delete deletes a pricelist by ID
 func (s *Service) Delete(id uint) error {
+	if s.repo == nil {
+		return fmt.Errorf("offline mode: cannot delete pricelists")
+	}
 	return s.repo.Delete(id)
 }

 // CanWrite returns true if the user can create pricelists
 func (s *Service) CanWrite() bool {
+	if s.repo == nil {
+		return false
+	}
 	return s.repo.CanWrite()
 }

 // CanWriteDebug returns write permission status with debug info
 func (s *Service) CanWriteDebug() (bool, string) {
+	if s.repo == nil {
+		return false, "offline mode"
+	}
 	return s.repo.CanWriteDebug()
 }

 // GetLatestActive returns the most recent active pricelist
 func (s *Service) GetLatestActive() (*models.Pricelist, error) {
+	if s.repo == nil {
+		return nil, fmt.Errorf("offline mode: pricelist service not available")
+	}
 	return s.repo.GetLatestActive()
 }

 // CleanupExpired deletes expired and unused pricelists
 func (s *Service) CleanupExpired() (int, error) {
+	if s.repo == nil {
+		return 0, fmt.Errorf("offline mode: cleanup not available")
+	}
+
 	expired, err := s.repo.GetExpiredUnused()
 	if err != nil {
 		return 0, err
--- a/internal/services/sync/service.go
+++ b/internal/services/sync/service.go
@@ -6,6 +6,7 @@ import (
 	"log/slog"
 	"time"

+	"git.mchus.pro/mchus/quoteforge/internal/db"
 	"git.mchus.pro/mchus/quoteforge/internal/localdb"
 	"git.mchus.pro/mchus/quoteforge/internal/models"
 	"git.mchus.pro/mchus/quoteforge/internal/repository"
@@ -13,17 +14,15 @@ import (

 // Service handles synchronization between MariaDB and local SQLite
 type Service struct {
-	pricelistRepo *repository.PricelistRepository
-	configRepo    *repository.ConfigurationRepository
-	localDB       *localdb.LocalDB
+	connMgr *db.ConnectionManager
+	localDB *localdb.LocalDB
 }

 // NewService creates a new sync service
-func NewService(pricelistRepo *repository.PricelistRepository, configRepo *repository.ConfigurationRepository, localDB *localdb.LocalDB) *Service {
+func NewService(connMgr *db.ConnectionManager, localDB *localdb.LocalDB) *Service {
 	return &Service{
-		pricelistRepo: pricelistRepo,
-		configRepo:    configRepo,
-		localDB:       localDB,
+		connMgr: connMgr,
+		localDB: localDB,
 	}
 }

@@ -39,10 +38,17 @@ type SyncStatus struct {
 func (s *Service) GetStatus() (*SyncStatus, error) {
 	lastSync := s.localDB.GetLastSyncTime()

-	// Count server pricelists
-	serverPricelists, _, err := s.pricelistRepo.List(0, 1)
-	if err != nil {
-		return nil, fmt.Errorf("counting server pricelists: %w", err)
+	// Count server pricelists (only if already connected, don't reconnect)
+	serverCount := 0
+	connStatus := s.connMgr.GetStatus()
+	if connStatus.IsConnected {
+		if mariaDB, err := s.connMgr.GetDB(); err == nil && mariaDB != nil {
+			pricelistRepo := repository.NewPricelistRepository(mariaDB)
+			serverPricelists, _, err := pricelistRepo.List(0, 1)
+			if err == nil {
+				serverCount = len(serverPricelists)
+			}
+		}
 	}

 	// Count local pricelists
@@ -52,7 +58,7 @@ func (s *Service) GetStatus() (*SyncStatus, error) {

 	return &SyncStatus{
 		LastSyncAt:       lastSync,
-		ServerPricelists: len(serverPricelists),
+		ServerPricelists: serverCount,
 		LocalPricelists:  int(localCount),
 		NeedsSync:        needsSync,
 	}, nil
@@ -73,8 +79,21 @@ func (s *Service) NeedSync() (bool, error) {
 		return true, nil
 	}

-	// Check if there are new pricelists on server
-	latestServer, err := s.pricelistRepo.GetLatestActive()
+	// Check if there are new pricelists on server (only if already connected)
+	connStatus := s.connMgr.GetStatus()
+	if !connStatus.IsConnected {
+		// If offline, can't check server, no need to sync
+		return false, nil
+	}
+
+	mariaDB, err := s.connMgr.GetDB()
+	if err != nil {
+		// If offline, can't check server, no need to sync
+		return false, nil
+	}
+
+	pricelistRepo := repository.NewPricelistRepository(mariaDB)
+	latestServer, err := pricelistRepo.GetLatestActive()
 	if err != nil {
 		// If no pricelists on server, no need to sync
 		return false, nil
@@ -98,18 +117,29 @@ func (s *Service) NeedSync() (bool, error) {
 func (s *Service) SyncPricelists() (int, error) {
 	slog.Info("starting pricelist sync")

+	// Get database connection
+	mariaDB, err := s.connMgr.GetDB()
+	if err != nil {
+		return 0, fmt.Errorf("database not available: %w", err)
+	}
+
+	// Create repository
+	pricelistRepo := repository.NewPricelistRepository(mariaDB)
+
 	// Get all active pricelists from server (up to 100)
-	serverPricelists, _, err := s.pricelistRepo.List(0, 100)
+	serverPricelists, _, err := pricelistRepo.List(0, 100)
 	if err != nil {
 		return 0, fmt.Errorf("getting server pricelists: %w", err)
 	}

 	synced := 0
+	var latestLocalID uint
 	for _, pl := range serverPricelists {
 		// Check if pricelist already exists locally
 		existing, _ := s.localDB.GetLocalPricelistByServerID(pl.ID)
 		if existing != nil {
-			// Already synced, skip
+			// Already synced, track latest
+			latestLocalID = existing.ID
 			continue
 		}

@@ -128,8 +158,27 @@ func (s *Service) SyncPricelists() (int, error) {
 			continue
 		}

+		// Sync items for the newly created pricelist
+		itemCount, err := s.SyncPricelistItems(localPL.ID)
+		if err != nil {
+			slog.Warn("failed to sync pricelist items", "version", pl.Version, "error", err)
+			// Continue even if items sync fails - we have the pricelist metadata
+		} else {
+			slog.Debug("synced pricelist with items", "version", pl.Version, "items", itemCount)
+		}
+
+		latestLocalID = localPL.ID
 		synced++
-		slog.Debug("synced pricelist", "version", pl.Version, "server_id", pl.ID)
+	}
+
+	// Update component prices from latest pricelist
+	if latestLocalID > 0 {
+		updated, err := s.localDB.UpdateComponentPricesFromPricelist(latestLocalID)
+		if err != nil {
+			slog.Warn("failed to update component prices from pricelist", "error", err)
+		} else {
+			slog.Info("updated component prices from latest pricelist", "updated", updated)
+		}
 	}

 	// Update last sync time
@@ -154,8 +203,17 @@ func (s *Service) SyncPricelistItems(localPricelistID uint) (int, error) {
 		return int(existingCount), nil
 	}

+	// Get database connection
+	mariaDB, err := s.connMgr.GetDB()
+	if err != nil {
+		return 0, fmt.Errorf("database not available: %w", err)
+	}
+
+	// Create repository
+	pricelistRepo := repository.NewPricelistRepository(mariaDB)
+
 	// Get items from server
-	serverItems, _, err := s.pricelistRepo.GetItems(localPL.ServerID, 0, 10000, "")
+	serverItems, _, err := pricelistRepo.GetItems(localPL.ServerID, 0, 10000, "")
 	if err != nil {
 		return 0, fmt.Errorf("getting server pricelist items: %w", err)
 	}
@@ -312,8 +370,17 @@ func (s *Service) pushConfigurationCreate(change *localdb.PendingChange) error {
 		return fmt.Errorf("unmarshaling configuration: %w", err)
 	}

+	// Get database connection
+	mariaDB, err := s.connMgr.GetDB()
+	if err != nil {
+		return fmt.Errorf("database not available: %w", err)
+	}
+
+	// Create repository
+	configRepo := repository.NewConfigurationRepository(mariaDB)
+
 	// Create on server
-	if err := s.configRepo.Create(&cfg); err != nil {
+	if err := configRepo.Create(&cfg); err != nil {
 		return fmt.Errorf("creating configuration on server: %w", err)
 	}

@@ -337,6 +404,15 @@ func (s *Service) pushConfigurationUpdate(change *localdb.PendingChange) error {
 		return fmt.Errorf("unmarshaling configuration: %w", err)
 	}

+	// Get database connection
+	mariaDB, err := s.connMgr.GetDB()
+	if err != nil {
+		return fmt.Errorf("database not available: %w", err)
+	}
+
+	// Create repository
+	configRepo := repository.NewConfigurationRepository(mariaDB)
+
 	// Ensure we have a server ID before updating
 	// If the payload doesn't have ID, get it from local configuration
 	if cfg.ID == 0 {
@@ -347,7 +423,7 @@ func (s *Service) pushConfigurationUpdate(change *localdb.PendingChange) error {

 		if localCfg.ServerID == nil {
 			// Configuration hasn't been synced yet, try to find it on server by UUID
-			serverCfg, err := s.configRepo.GetByUUID(cfg.UUID)
+			serverCfg, err := configRepo.GetByUUID(cfg.UUID)
 			if err != nil {
 				return fmt.Errorf("configuration not yet synced to server: %w", err)
 			}
@@ -363,7 +439,7 @@ func (s *Service) pushConfigurationUpdate(change *localdb.PendingChange) error {
 	}

 	// Update on server
-	if err := s.configRepo.Update(&cfg); err != nil {
+	if err := configRepo.Update(&cfg); err != nil {
 		return fmt.Errorf("updating configuration on server: %w", err)
 	}

@@ -380,8 +456,17 @@ func (s *Service) pushConfigurationUpdate(change *localdb.PendingChange) error {

 // pushConfigurationDelete deletes a configuration from the server
 func (s *Service) pushConfigurationDelete(change *localdb.PendingChange) error {
+	// Get database connection
+	mariaDB, err := s.connMgr.GetDB()
+	if err != nil {
+		return fmt.Errorf("database not available: %w", err)
+	}
+
+	// Create repository
+	configRepo := repository.NewConfigurationRepository(mariaDB)
+
 	// Get the configuration from server by UUID to get the ID
-	cfg, err := s.configRepo.GetByUUID(change.EntityUUID)
+	cfg, err := configRepo.GetByUUID(change.EntityUUID)
 	if err != nil {
 		// Already deleted or not found, consider it successful
 		slog.Warn("configuration not found on server, considering delete successful", "uuid", change.EntityUUID)
@@ -389,7 +474,7 @@ func (s *Service) pushConfigurationDelete(change *localdb.PendingChange) error {
 	}

 	// Delete from server
-	if err := s.configRepo.Delete(cfg.ID); err != nil {
+	if err := configRepo.Delete(cfg.ID); err != nil {
 		return fmt.Errorf("deleting configuration from server: %w", err)
 	}

--- a/internal/services/sync/worker.go
+++ b/internal/services/sync/worker.go
@@ -5,23 +5,23 @@ import (
 	"log/slog"
 	"time"

-	"gorm.io/gorm"
+	"git.mchus.pro/mchus/quoteforge/internal/db"
 )

 // Worker performs background synchronization at regular intervals
 type Worker struct {
 	service  *Service
-	db       *gorm.DB
+	connMgr  *db.ConnectionManager
 	interval time.Duration
 	logger   *slog.Logger
 	stopCh   chan struct{}
 }

 // NewWorker creates a new background sync worker
-func NewWorker(service *Service, db *gorm.DB, interval time.Duration) *Worker {
+func NewWorker(service *Service, connMgr *db.ConnectionManager, interval time.Duration) *Worker {
 	return &Worker{
 		service:  service,
-		db:       db,
+		connMgr:  connMgr,
 		interval: interval,
 		logger:   slog.Default(),
 		stopCh:   make(chan struct{}),
@@ -30,11 +30,7 @@ func NewWorker(service *Service, db *gorm.DB, interval time.Duration) *Worker {

 // isOnline checks if the database connection is available
 func (w *Worker) isOnline() bool {
-	sqlDB, err := w.db.DB()
-	if err != nil {
-		return false
-	}
-	return sqlDB.Ping() == nil
+	return w.connMgr.IsOnline()
 }

 // Start begins the background sync loop in a goroutine
--- a/scripts/release.sh
+++ b/scripts/release.sh
@@ -0,0 +1,100 @@
+#!/bin/bash
+set -e
+
+# QuoteForge Release Build Script
+# Creates binaries for all platforms and packages them for release
+
+# Colors
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+NC='\033[0m' # No Color
+
+# Get version from git
+VERSION=$(git describe --tags --always --dirty 2>/dev/null || echo "dev")
+if [[ $VERSION == *"dirty"* ]]; then
+    echo -e "${RED}✗ Error: Working directory has uncommitted changes${NC}"
+    echo "  Commit your changes first"
+    exit 1
+fi
+
+echo -e "${GREEN}Building QuoteForge version: ${VERSION}${NC}"
+echo ""
+
+# Create release directory
+RELEASE_DIR="releases/${VERSION}"
+mkdir -p "${RELEASE_DIR}"
+
+# Build for all platforms
+echo -e "${YELLOW}→ Building binaries...${NC}"
+make build-all
+
+# Package binaries with checksums
+echo ""
+echo -e "${YELLOW}→ Creating release packages...${NC}"
+
+# Linux AMD64
+if [ -f "bin/qfs-linux-amd64" ]; then
+    cd bin
+    tar -czf "../${RELEASE_DIR}/qfs-${VERSION}-linux-amd64.tar.gz" qfs-linux-amd64
+    cd ..
+    echo -e "${GREEN}  ✓ qfs-${VERSION}-linux-amd64.tar.gz${NC}"
+fi
+
+# macOS Intel
+if [ -f "bin/qfs-darwin-amd64" ]; then
+    cd bin
+    tar -czf "../${RELEASE_DIR}/qfs-${VERSION}-darwin-amd64.tar.gz" qfs-darwin-amd64
+    cd ..
+    echo -e "${GREEN}  ✓ qfs-${VERSION}-darwin-amd64.tar.gz${NC}"
+fi
+
+# macOS Apple Silicon
+if [ -f "bin/qfs-darwin-arm64" ]; then
+    cd bin
+    tar -czf "../${RELEASE_DIR}/qfs-${VERSION}-darwin-arm64.tar.gz" qfs-darwin-arm64
+    cd ..
+    echo -e "${GREEN}  ✓ qfs-${VERSION}-darwin-arm64.tar.gz${NC}"
+fi
+
+# Windows AMD64
+if [ -f "bin/qfs-windows-amd64.exe" ]; then
+    cd bin
+    zip -q "../${RELEASE_DIR}/qfs-${VERSION}-windows-amd64.zip" qfs-windows-amd64.exe
+    cd ..
+    echo -e "${GREEN}  ✓ qfs-${VERSION}-windows-amd64.zip${NC}"
+fi
+
+# Generate checksums
+echo ""
+echo -e "${YELLOW}→ Generating checksums...${NC}"
+cd "${RELEASE_DIR}"
+shasum -a 256 *.tar.gz *.zip > SHA256SUMS.txt 2>/dev/null || shasum -a 256 * | grep -v SHA256SUMS > SHA256SUMS.txt
+cd ../..
+echo -e "${GREEN}  ✓ SHA256SUMS.txt${NC}"
+
+# List release files
+echo ""
+echo -e "${GREEN}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
+echo -e "${GREEN}Release ${VERSION} built successfully!${NC}"
+echo -e "${GREEN}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
+echo ""
+echo "Files in ${RELEASE_DIR}:"
+ls -lh "${RELEASE_DIR}"
+echo ""
+
+# Show next steps
+echo -e "${YELLOW}Next steps:${NC}"
+echo "  1. Create git tag:"
+echo "     git tag -a ${VERSION} -m \"Release ${VERSION}\""
+echo ""
+echo "  2. Push tag to remote:"
+echo "     git push origin ${VERSION}"
+echo ""
+echo "  3. Create release on git.mchus.pro:"
+echo "     - Go to: https://git.mchus.pro/mchus/QuoteForge/releases"
+echo "     - Click 'New Release'"
+echo "     - Select tag: ${VERSION}"
+echo "     - Upload files from: ${RELEASE_DIR}/"
+echo ""
+echo -e "${GREEN}Done!${NC}"
--- a/web/templates/admin_pricing.html
+++ b/web/templates/admin_pricing.html
@@ -591,8 +591,21 @@ async function fetchPreview() {
            document.getElementById('modal-new-price').textContent =
                data.new_price ? '$' + parseFloat(data.new_price).toFixed(2) : '—';

-            // Update quote count
-            document.getElementById('modal-quote-count').textContent = data.quote_count || 0;
+            // Update quote count with new format "N (всего: M)"
+            let quoteCountText = '';
+            if (data.quote_count_period !== undefined && data.quote_count_total !== undefined) {
+                if (data.quote_count_period === data.quote_count_total) {
+                    // If period count equals total count, just show the total
+                    quoteCountText = data.quote_count_total;
+                } else {
+                    // Show both counts in format "N (всего: M)"
+                    quoteCountText = data.quote_count_period + ' (всего: ' + data.quote_count_total + ')';
+                }
+            } else {
+                // Fallback for older API responses
+                quoteCountText = data.quote_count || 0;
+            }
+            document.getElementById('modal-quote-count').textContent = quoteCountText;
        }
    } catch(e) {
        console.error('Preview fetch error:', e);
@@ -1019,7 +1032,23 @@ function closePricelistsCreateModal() {
    document.getElementById('pricelists-create-modal').classList.remove('flex');
 }

+async function checkOnlineStatus() {
+    try {
+        const resp = await fetch('/api/db-status');
+        const data = await resp.json();
+        return data.connected === true;
+    } catch(e) {
+        return false;
+    }
+}
+
 async function createPricelist() {
+    // Check if online before creating
+    const isOnline = await checkOnlineStatus();
+    if (!isOnline) {
+        throw new Error('Создание прайслистов доступно только в онлайн режиме');
+    }
+
    const resp = await fetch('/api/pricelists', {
        method: 'POST',
        headers: {
@@ -1037,6 +1066,13 @@ async function createPricelist() {
 }

 async function deletePricelist(id) {
+    // Check if online before deleting
+    const isOnline = await checkOnlineStatus();
+    if (!isOnline) {
+        showToast('Удаление прайслистов доступно только в онлайн режиме', 'error');
+        return;
+    }
+
    if (!confirm('Удалить этот прайслист?')) return;

    try {
--- a/web/templates/base.html
+++ b/web/templates/base.html
@@ -20,7 +20,7 @@
                    <a href="/" class="text-xl font-bold text-blue-600">QuoteForge</a>
                    <div class="hidden md:flex space-x-4">
                        <a href="/configurator" class="text-gray-600 hover:text-gray-900 px-3 py-2 text-sm">Конфигуратор</a>
-                        <a id="admin-pricing-link" href="/admin/pricing" class="text-gray-600 hover:text-gray-900 px-3 py-2 text-sm hidden">Администратор цен</a>
+                        <a id="admin-pricing-link" href="/admin/pricing" class="text-gray-600 hover:text-gray-900 px-3 py-2 text-sm">Администратор цен</a>
                        <a href="/setup" class="text-gray-600 hover:text-gray-900 px-3 py-2 text-sm">Настройки</a>
                    </div>
                </div>
@@ -237,17 +237,11 @@
            }
        }

+        // Admin pricing link is now always visible
+        // Write permission is checked at operation time (create/delete)
        async function checkWritePermission() {
-            try {
-                const resp = await fetch('/api/pricelists/can-write');
-                const data = await resp.json();
-                if (data.can_write) {
-                    const link = document.getElementById('admin-pricing-link');
-                    if (link) link.classList.remove('hidden');
-                }
-            } catch(e) {
-                console.error('Failed to check write permission:', e);
-            }
+            // No longer needed - link always visible in offline-first mode
+            // Operations will check online status when executed
        }

        // Load last sync time for dropdown (removed since dropdown is gone)
--- a/web/templates/configs.html
+++ b/web/templates/configs.html
@@ -421,18 +421,23 @@ async function loadLatestPricelistVersion() {
            const pricelist = await resp.json();
            document.getElementById('pricelist-version').textContent = pricelist.version;
            document.getElementById('pricelist-badge').classList.remove('hidden');
+        } else if (resp.status === 404) {
+            // No active pricelist (normal in offline mode or when not synced)
+            document.getElementById('pricelist-version').textContent = 'Не загружен';
+            document.getElementById('pricelist-badge').classList.remove('hidden');
+            document.getElementById('pricelist-badge').classList.add('bg-gray-100', 'text-gray-600');
        } else {
-            // Show error in badge
+            // Real error
            document.getElementById('pricelist-version').textContent = 'Ошибка загрузки';
            document.getElementById('pricelist-badge').classList.remove('hidden');
            document.getElementById('pricelist-badge').classList.add('bg-red-100', 'text-red-800');
        }
    } catch(e) {
-        // Show error in badge
+        // Network error or other exception
        console.error('Failed to load pricelist version:', e);
-        document.getElementById('pricelist-version').textContent = 'Ошибка загрузки';
+        document.getElementById('pricelist-version').textContent = 'Не доступен';
        document.getElementById('pricelist-badge').classList.remove('hidden');
-        document.getElementById('pricelist-badge').classList.add('bg-red-100', 'text-red-800');
+        document.getElementById('pricelist-badge').classList.add('bg-gray-100', 'text-gray-600');
    }
 }
 </script>
--- a/web/templates/setup.html
+++ b/web/templates/setup.html
@@ -87,12 +87,14 @@
    <script>
        function showStatus(message, type) {
            const status = document.getElementById('status');
-            status.classList.remove('hidden', 'bg-green-100', 'text-green-800', 'bg-red-100', 'text-red-800', 'bg-blue-100', 'text-blue-800');
+            status.classList.remove('hidden', 'bg-green-100', 'text-green-800', 'bg-red-100', 'text-red-800', 'bg-blue-100', 'text-blue-800', 'bg-yellow-100', 'text-yellow-800');

            if (type === 'success') {
                status.classList.add('bg-green-100', 'text-green-800');
            } else if (type === 'error') {
                status.classList.add('bg-red-100', 'text-red-800');
+            } else if (type === 'warning') {
+                status.classList.add('bg-yellow-100', 'text-yellow-800');
            } else {
                status.classList.add('bg-blue-100', 'text-blue-800');
            }
@@ -171,12 +173,21 @@

                if (data.success) {
                    showStatus('✓ ' + data.message, 'success');
-                    // Wait for restart and redirect to home
-                    setTimeout(() => {
-                        showStatus('✓ Настройки сохранены. Проверка подключения...', 'success');
-                        // Poll until server is back
-                        checkServerReady();
-                    }, 2000);
+
+                    // Check if restart is required
+                    if (data.restart_required) {
+                        // In normal mode, restart must be done manually
+                        setTimeout(() => {
+                            showStatus('⚠️ Пожалуйста, перезапустите приложение вручную для применения изменений', 'warning');
+                        }, 2000);
+                    } else {
+                        // In setup mode, auto-restart is happening
+                        setTimeout(() => {
+                            showStatus('✓ Настройки сохранены. Проверка подключения...', 'success');
+                            // Poll until server is back
+                            checkServerReady();
+                        }, 2000);
+                    }
                } else {
                    showStatus(data.error, 'error');
                }
Author	SHA1	Message	Date
Mikhail Chusavitin	8a37542929	docs: add release notes for v0.2.7	2026-02-03 11:39:23 +03:00
Mikhail Chusavitin	0eb6730a55	fix: Windows compatibility and localhost binding Windows compatibility: - Added filepath.Join for all template and static paths - Fixes "path not found" errors on Windows Localhost binding: - Changed default host from 0.0.0.0 to 127.0.0.1 - Browser always opens on 127.0.0.1 (localhost) - Setup mode now listens on 127.0.0.1:8080 - Updated config.example.yaml with comment about 0.0.0.0 This ensures the app works correctly on Windows and opens browser on the correct localhost address. Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>	2026-02-03 11:38:28 +03:00
Mikhail Chusavitin	e2d056e7cb	feat: add Windows support to build system - Add make build-windows for Windows AMD64 - Update make build-all to include Windows - Update release script to package Windows binary as .zip - Add Windows installation instructions to docs - Windows binary: qfs-windows-amd64.exe (~17MB) All platforms now supported: - Linux AMD64 (.tar.gz) - macOS Intel/ARM (.tar.gz) - Windows AMD64 (.zip) Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>	2026-02-03 11:04:04 +03:00
Mikhail Chusavitin	1bce8086d6	feat: add release build script for multi-platform binaries - Add scripts/release.sh for automated release builds - Creates tar.gz packages for Linux and macOS - Generates SHA256 checksums - Add 'make release' target - Add releases/ to .gitignore Usage: make release # Build and package for all platforms Output: releases/v0.2.5/*.tar.gz + SHA256SUMS.txt Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>	2026-02-03 10:58:41 +03:00
Mikhail Chusavitin	0bdd163728	feat: add version flag and Makefile for release builds - Add -version flag to show build version - Add Makefile with build targets: - make build-release: optimized build with version - make build-all: cross-compile for Linux/macOS - make run/test/clean: dev commands - Update documentation with build commands - Version is embedded via ldflags during build Usage: make build-release # Build with version ./bin/qfs -version # Show version Version format: v0.2.5-1-gfa0f5e3 (tag-commits-hash) Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>	2026-02-03 10:57:22 +03:00
Mikhail Chusavitin	fa0f5e321d	refactor: rename binary from quoteforge to qfs - Rename cmd/server to cmd/qfs for shorter binary name - Update all documentation references (README, CLAUDE.md, etc.) - Update build commands to output bin/qfs - Binary name now matches directory name Usage: go run ./cmd/qfs # Development go build -o bin/qfs ./cmd/qfs # Production Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>	2026-02-03 10:55:14 +03:00
Mikhail Chusavitin	502832ac9a	Merge feature/phase2-sqlite-sync into main This merge brings Phase 2.5 (Full Offline Mode) with the following improvements: - Local-first architecture: all operations work through SQLite - Background sync worker for automatic synchronization - Sync queue (pending_changes table) for reliable data push - LocalConfigurationService for offline-capable CRUD operations - Pre-create pricelist check before configuration creation - RefreshPrices works in offline mode using local_components - UI improvements: sync status indicator, pricelist badge, unified admin tabs - Fixed online mode: automatic MariaDB connection on startup - Fixed nil pointer dereference in PricingHandler alert methods - Improved setup flow with restart requirement notification Phase 2.5 is now complete. Ready for production.	2026-02-03 10:51:48 +03:00
Mikhail Chusavitin	8d84484412	fix: fix online mode after offline-first architecture changes - Fix nil pointer dereference in PricingHandler alert methods - Add automatic MariaDB connection on startup if settings exist - Update setupRouter to accept mariaDB as parameter - Fix offline mode checks: use h.db instead of h.alertService - Update setup handler to show restart required message - Add warning status support in setup.html UI This ensures that after saving connection settings, the application works correctly in online mode after restart. All repositories are properly initialized with MariaDB connection on startup. Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>	2026-02-03 10:50:07 +03:00
Michael Chus	2510d9e36e	feat: show local pricelists in offline mode Problem: Pricelist page showed empty list in offline mode even though local pricelists existed in SQLite cache. Solution: Modified PricelistHandler.List() to fallback to local pricelists: 1. Check if server list is empty (offline) 2. Load from localDB.GetLocalPricelists() 3. Convert LocalPricelist to summary format 4. Add "synced_from": "local" field 5. Add "offline": true flag Response format: ```json { "offline": true, "total": 4, "pricelists": [ { "version": "2026-02-02-002", "created_by": "sync", "synced_from": "local", "is_active": true } ] } ``` Impact: - ✅ Local pricelists visible in offline mode - ✅ UI can show cached pricelist versions - ✅ Users can browse pricelists without connection - ✅ Clear indication of local/remote source Part of Phase 2.5: Full Offline Mode Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>	2026-02-03 07:19:43 +03:00
Michael Chus	d7285fc730	fix: prevent PricingHandler panics in offline mode Problem: Opening /admin/pricing page caused nil pointer panic when offline because PricingHandler methods accessed nil repositories. Solution: Added offline checks to all PricingHandler public methods: 1. GetStats - returns empty stats with offline flag 2. ListComponents - returns empty list with message 3. GetComponentPricing - returns 503 with offline error 4. UpdatePrice - blocks mutations with offline error 5. RecalculateAll - blocks recalculation with offline error 6. PreviewPrice - blocks preview with offline error Response format: ```json { "offline": true, "message": "Управление ценами доступно только в онлайн режиме", "components": [], "total": 0 } ``` Impact: - ✅ No panics when viewing admin pricing offline - ✅ Clear offline status indication - ✅ Graceful degradation for all operations - ✅ UI can detect offline and show appropriate message Fixes Phase 2.5 admin panel offline issue. Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>	2026-02-03 07:17:58 +03:00
Michael Chus	e33a3f2c88	fix: enable component search and pricing in offline mode Problem: Configurator was broken in offline mode - no component search and no price calculation because /api/components returned empty list. Solution: Added local component fallback to ComponentHandler: 1. ComponentHandler with localDB (component.go) - Added localDB parameter to NewComponentHandler - List() now fallbacks to local_components when offline - Converts LocalComponent to ComponentView format - Preserves prices from local cache 2. Updated initialization (main.go) - Pass localDB to NewComponentHandler Impact: - ✅ Component search works offline - ✅ Prices load from local_components table - ✅ Configuration creation fully functional offline - ✅ Price calculation works with cached prices Testing: - Verified /api/components returns local components - Verified current_price field populated from cache - Search, filtering, and pagination work correctly Fixes critical Phase 2.5 offline mode issue. Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>	2026-02-03 07:15:03 +03:00
Michael Chus	4735e2b9bb	feat: always show admin menu with online checks for operations Changes: 1. Admin menu always visible (base.html) - Removed 'hidden' class from "Администратор цен" link - Menu no longer depends on write permission check - Users can access pricing/pricelists pages in offline mode 2. Online status checks for mutations (admin_pricing.html) - Added checkOnlineStatus() helper function - createPricelist() checks online before creating - deletePricelist() checks online before deleting - Clear user feedback when operations blocked offline User Impact: - Admin menu accessible in both online and offline modes - View-only access to pricelists when offline - Clear error messages when attempting mutations offline - Better offline-first UX Part of Phase 2.5: Full Offline Mode Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>	2026-02-03 07:12:18 +03:00
Michael Chus	cdf5cef2cf	perf: eliminate connection timeouts in offline mode Fixed application freezing in offline mode by preventing unnecessary reconnection attempts: Changes: 1. DSN timeouts (localdb.go) - Added timeout=3s, readTimeout=3s, writeTimeout=3s to MySQL DSN - Reduces connection timeout from 75s to 3s when MariaDB unreachable 2. Fast /api/db-status (main.go) - Check connection status before attempting GetDB() - Avoid reconnection attempts on every status request - Returns cached offline status instantly 3. Optimized sync service (sync/service.go) - GetStatus() checks connection status before GetDB() - NeedSync() skips server check if already offline - Prevents repeated 3s timeouts on every sync info request 4. Local pricelist fallback (pricelist.go) - GetLatest() returns local pricelists when server offline - UI can now display pricelist version in offline mode 5. Better UI error messages (configs.html) - 404 shows "Не загружен" instead of "Ошибка загрузки" - Network errors show "Не доступен" in gray - Distinguishes between missing data and real errors Performance: - Before: 75s timeout on every offline request - After: <5ms response time in offline mode - Cached error state prevents repeated connection attempts User Impact: - UI no longer freezes when loading pages offline - Instant page loads and API responses - Pricelist version displays correctly in offline mode - Clear visual feedback for offline state Fixes Phase 2.5 offline mode performance issues. Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>	2026-02-03 07:10:53 +03:00
Michael Chus	7f030e7db7	refactor: migrate sync service and handlers to use ConnectionManager Updated sync-related code to use ConnectionManager instead of direct database references: - SyncService now creates repositories on-demand when connection available - SyncHandler uses ConnectionManager for lazy DB access - Added ComponentFilter and ListComponents to localdb for offline queries - All sync operations check connection status before attempting MariaDB access This completes the transition to offline-first architecture where all database access goes through ConnectionManager. Part of Phase 2.5: Full Offline Mode Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>	2026-02-02 23:29:36 +03:00
Michael Chus	3d222b7f14	feat: add ConnectionManager for lazy database connections Introduced ConnectionManager to support offline-first architecture: - New internal/db/connection.go with thread-safe connection management - Lazy connection establishment (5s timeout, 10s cooldown) - Automatic ping caching (30s interval) to avoid excessive checks - Updated middleware/offline.go to use ConnectionManager.IsOnline() - Updated sync/worker.go to use ConnectionManager instead of direct DB This enables the application to start without MariaDB and gracefully handle offline/online transitions. Part of Phase 2.5: Full Offline Mode Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>	2026-02-02 23:29:04 +03:00
Michael Chus	c024b96de7	fix: enable instant startup and offline mode for server Fixed two critical issues preventing offline-first operation: 1. Instant startup - Removed blocking GetDB() call during server initialization. Server now starts in <10ms instead of 1+ minute. - Changed setupRouter() to use lazy DB connection via ConnectionManager - mariaDB connection is now nil on startup, established only when needed - Fixes timeout issues when MariaDB is unreachable 2. Offline mode nil pointer panics - Added graceful degradation when database is offline: - ComponentService.GetCategories() returns DefaultCategories if repo is nil - ComponentService.List/GetByLotName checks for nil repo - PricelistService methods return empty/error responses in offline mode - All methods properly handle nil repositories Before: Server startup took 1min+ and crashed with nil pointer panic when trying to load /configurator page offline. After: Server starts instantly and serves pages in offline mode using DefaultCategories and SQLite data. Related to Phase 2.5: Full Offline Mode (local-first architecture) Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>	2026-02-02 23:28:14 +03:00
Michael Chus	2c75a7ccb8	feat: improve admin pricing modal quote count display to show period and total counts	2026-02-02 21:34:51 +03:00
Mikhail Chusavitin	f25477a25e	add todo	2026-02-02 19:44:45 +03:00