fix: 修复代理问题

backend/store.py

@@ -361,6 +361,19 @@ def update_push_task_status(task_id: str, status: str) -> Optional[Dict]:
 
 
 # ---------- 同步消息 ----------
+def list_all_keys() -> List[str]:
+    """返回所有出现过的 key（sync_messages + ai_reply_config 去重），用于启动时批量注册回调等。"""
+    with _LOCK:
+        conn = _conn()
+        try:
+            cur = conn.execute(
+                "SELECT DISTINCT key FROM (SELECT key FROM sync_messages UNION SELECT key FROM ai_reply_config)"
+            )
+            return [r[0] for r in cur.fetchall() if r[0]]
+        finally:
+            conn.close()
+
+
 def append_sync_messages(key: str, messages: List[Dict], max_per_key: int = 500) -> None:
     with _LOCK:
         conn = _conn()