Fix get_user_by_api_key to also check api_keys table

database.py

@@ -101,6 +101,12 @@ def get_user_by_username(username: str) -> Optional[Dict]:
 def get_user_by_api_key(api_key: str) -> Optional[Dict]:
     with get_db() as conn:
         row = conn.execute("SELECT * FROM users WHERE api_key = ? AND is_active = 1", (api_key,)).fetchone()
+        if row:
+            return dict(row)
+        row = conn.execute(
+            "SELECT u.* FROM users u JOIN api_keys a ON u.id = a.user_id WHERE a.api_key = ? AND a.is_active = 1",
+            (api_key,)
+        ).fetchone()
         return dict(row) if row else None