feat: 多任务上传时显示等待上传状态

- 任务入队时设置状态为"等待上传"
- 实际上传时更新为"上传截图"
- 用户可以更直观地看到多任务上传进度

services/kdocs_uploader.py

@@ -90,6 +90,15 @@ class KDocsUploader:
             "image_path": image_path,
         }
         try:
+            # 入队前设置状态为等待上传
+            try:
+                account = safe_get_account(user_id, account_id)
+                if account and self._should_mark_upload(account):
+                    account.status = "等待上传"
+                    self._emit_account_update(user_id, account)
+            except Exception:
+                pass
+            
             self._queue.put({"action": "upload", "payload": payload}, timeout=1)
             return True
         except queue.Full: