Add database migration to add missing columns to user_api_tokens

vidai/database.py

@@ -372,11 +372,15 @@ def init_db(conn) -> None:
                 FOREIGN KEY (user_id) REFERENCES users (id)
             )
         ''')
-        # Add name column if it doesn't exist (for migration)
+        # Add missing columns if they don't exist (for migration)
         try:
             cursor.execute('ALTER TABLE user_api_tokens ADD COLUMN name TEXT')
         except sqlite3.OperationalError:
             pass  # Column already exists
+        try:
+            cursor.execute('ALTER TABLE user_api_tokens ADD COLUMN last_used TIMESTAMP')
+        except sqlite3.OperationalError:
+            pass  # Column already exists
 
     # Insert default admin user if not exist
     import hashlib