refactor: open track store explicitly and remove global state

internal/config/migrate.go

@@ -0,0 +1,25 @@
+package config
+
+import (
+	"os"
+	"path/filepath"
+)
+
+func MigrateLegacy(outputDir string) {
+	homeDir, err := os.UserHomeDir()
+	if err != nil {
+		return
+	}
+
+	oldDB := filepath.Join(homeDir, ".godeez", "tracks.db")
+	newDB := filepath.Join(outputDir, ".tracks.db")
+	if _, err := os.Stat(oldDB); err == nil {
+		if _, err := os.Stat(newDB); os.IsNotExist(err) {
+			os.Rename(oldDB, newDB)
+		}
+	}
+
+	oldDir := filepath.Join(homeDir, ".godeez")
+	os.Remove(filepath.Join(oldDir, "config.toml"))
+	os.Remove(oldDir)
+}