尝试修复挑战系统中的用户名错误

Plugins/WPSConfigSystem.py

@@ -202,6 +202,18 @@ class WPSConfigAPI(WPSAPI):
         value = record.get("username")
         return str(value) if value else f"user_{user_id}"
 
+    def find_user_id_by_username(self, username: str) -> Optional[int]:
+        text = (username or "").strip()
+        if not text:
+            return None
+        cursor = get_db().conn.cursor()
+        cursor.execute(
+            "SELECT user_id FROM user_info WHERE username = ? COLLATE NOCASE",
+            (text,),
+        )
+        row = cursor.fetchone()
+        return int(row["user_id"]) if row else None
+
     def get_user_url(self, user_id: int) -> Optional[str]:
         record = self._get_user_record(user_id)
         if not record: