fix: never discard from _processing_uids to prevent re-fetching

main.py

@@ -110,19 +110,16 @@ def _tg_worker(cfg):
             try:
                 info = _tg_queue.get_nowait()
                 tg_send_and_mark(cfg, info)
-                # 发送并标记已读成功后才移除 pending
+                # 发送并标记已读成功后移除 pending（_processing_uids 保留直到重启）
                 with _pending_lock:
                     _pending_uids.discard(info["uid"])
-                    _processing_uids.discard(info["uid"])
             except queue_module.Empty:
                 break
             except Exception as e:
                 logger.error(f"TG 发送失败: {e}", exc_info=True)
-                # 发送失败也要移除 pending，避免永久阻塞
                 try:
                     with _pending_lock:
                         _pending_uids.discard(info["uid"])
-                        _processing_uids.discard(info["uid"])
                 except Exception:
                     pass