add comments

internal/token/store_sqlite.go

@@ -16,6 +16,8 @@ type Token struct {
 	Expiration time.Time `gorm:"index"`
 }
 
+// NewSQLiteTokenStore creates a new SQLiteTokenStore with the given GORM DB instance.
+// Actually can be used for any GORM-supported database.
 func NewSQLiteTokenStore(db *gorm.DB) (*SQLiteTokenStore, error) {
 	if db == nil {
 		return nil, fmt.Errorf("db is nil")