Initial commit: ym-dl with yandex-music-api-go library migration

Migrate ym-dl from custom oapi-codegen Yandex Music API client to external
gitea.mrixs.me/Mrixs/yandex-music-api-go library with token-only authentication.

Key changes:
- Replace custom Yandex API client with yandexmusic library wrapper
- Token-based OAuth authentication only (no username/password fallback)
- SQLite storage index with JSON index migration path
- Extended ID3 tag support: genre, comment, lyrics, publisher, ISRC, copyright
- High-resolution album covers (1000x1000)
- Fixed album download check (requires all tracks, not just one)

cmd/ym-dl/main.go

@@ -0,0 +1,93 @@
+package main
+
+import (
+	"context"
+	"flag"
+	"fmt"
+	"log/slog"
+	"os"
+	"os/signal"
+	"syscall"
+
+	"ym-dl/internal/config"
+	"ym-dl/internal/downloader"
+	"ym-dl/internal/monitor"
+	"ym-dl/internal/storage"
+	"ym-dl/internal/yandex"
+)
+
+func main() {
+	configPath := flag.String("config", "config.yaml", "Path to config file")
+	flag.Parse()
+
+	// Load configuration
+	cfg, err := config.Load(*configPath)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Failed to load config: %v\n", err)
+		os.Exit(1)
+	}
+
+	// Setup logger
+	logLevel := slog.LevelInfo
+	if cfg.Debug {
+		logLevel = slog.LevelDebug
+	}
+	logger := slog.New(slog.NewJSONHandler(os.Stdout, &slog.HandlerOptions{
+		Level: logLevel,
+	}))
+	slog.SetDefault(logger)
+
+	// Create Yandex client
+	yandexClient, err := yandex.NewYandexClient(&cfg.Yandex, cfg.Debug)
+	if err != nil {
+		logger.Error("Failed to create Yandex client", "error", err)
+		os.Exit(1)
+	}
+
+	// Create storage
+	store, err := storage.NewStorage(cfg.Storage.Path, cfg.Storage.Organize)
+	if err != nil {
+		logger.Error("Failed to create storage", "error", err)
+		os.Exit(1)
+	}
+
+	// Create downloader
+	dl := downloader.NewDownloader(yandexClient, store)
+
+	// Create monitor
+	mon := monitor.NewMonitor(cfg, yandexClient, store, dl, logger)
+
+	// Setup context with signal handling
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+
+	sigCh := make(chan os.Signal, 1)
+	signal.Notify(sigCh, syscall.SIGINT, syscall.SIGTERM)
+	go func() {
+		<-sigCh
+		logger.Info("Shutdown signal received")
+		cancel()
+		mon.Stop()
+		if err := store.Close(); err != nil {
+			logger.Error("Failed to close storage", "error", err)
+		}
+	}()
+
+	// Start monitor
+	if err := mon.Start(ctx); err != nil {
+		logger.Error("Failed to start monitor", "error", err)
+		os.Exit(1)
+	}
+
+	logger.Info("ym-dl started", "artists", len(cfg.Artists), "storage", cfg.Storage.Path)
+
+	// Wait for context cancellation
+	<-ctx.Done()
+
+	mon.Stop()
+	if err := store.Close(); err != nil {
+		logger.Error("Failed to close storage", "error", err)
+	}
+
+	logger.Info("ym-dl stopped")
+}