add init functions

internal/token/store_sqlite.go

@@ -43,3 +43,13 @@ func (s *SQLiteTokenStore) isRevoked(tokenID string) (bool, error) {
 	}
 	return count > 0, nil
 }
+
+func (s *SQLiteTokenStore) init() error {
+	// AutoMigrate models
+	err := s.db.AutoMigrate(&Token{})
+	if err != nil {
+		return fmt.Errorf("failed to migrate Token model: %w", err)
+	}
+
+	return nil
+}