Fix kdocs login status detection

services/kdocs_uploader.py

@@ -204,8 +204,12 @@ class KDocsUploader:
             if login_btn.is_visible(timeout=1500):
                 return False
         except Exception:
+            return False
         return True
-        return True
+
+    def _has_saved_login_state(self) -> bool:
+        storage_state = getattr(config, "KDOCS_LOGIN_STATE_FILE", "data/kdocs_login_state.json")
+        return os.path.exists(storage_state)
 
     def _ensure_login_dialog(self) -> None:
         try:
@@ -264,7 +268,7 @@ class KDocsUploader:
         if not self._open_document(doc_url):
             return {"success": False, "error": self._last_error or "打开文档失败"}
 
-        if self._is_logged_in():
+        if self._has_saved_login_state() and self._is_logged_in():
             self._login_required = False
             self._last_login_ok = True
             self._save_login_state()
@@ -307,6 +311,8 @@ class KDocsUploader:
         if not self._open_document(doc_url):
             return {"success": False, "logged_in": False, "error": self._last_error or "打开文档失败"}
         logged_in = self._is_logged_in()
+        if not self._has_saved_login_state():
+            logged_in = False
         self._last_login_ok = logged_in
         self._login_required = not logged_in
         if logged_in: