Update app.py

app.py

@@ -7,6 +7,10 @@ import os
 from urllib.parse import quote
 from concurrent.futures import ThreadPoolExecutor
 import hashlib
+from webdav_sync import start_webdav_sync_if_configured
+
+# 在应用导入阶段拉取远端，并启动定时同步
+_webdav_syncer = start_webdav_sync_if_configured(HISTORY_FILE)
 
 # --- 应用配置 (Application Configuration) ---
 SCRIPT_DIR = os.path.dirname(os.path.abspath(__file__))