fix: tune telegram polling for proxy stability

main.py

@@ -47,7 +47,7 @@ def polling_error_callback(exc):
     if now - _last_polling_error_log < 60:
         return
     _last_polling_error_log = now
-    logger.warning(f"⚠️ TG polling 网络波动，已自动重试: {type(exc).__name__}: {exc}")
+    logger.warning(f"⚠️ TG polling 长轮询连接被代理中断，已自动重试: {type(exc).__name__}: {exc}")
 
 
 async def global_error_handler(update: object, context: ContextTypes.DEFAULT_TYPE):
@@ -78,7 +78,7 @@ async def start_tg_bot():
         proxy=PROXY_URL,
         connection_pool_size=8,
         connect_timeout=30.0,
-        read_timeout=60.0,
+        read_timeout=15.0,
         write_timeout=30.0,
         pool_timeout=30.0,
     )
@@ -95,7 +95,12 @@ async def start_tg_bot():
 
     await tg_app.initialize()
     await tg_app.start()
-    await tg_app.updater.start_polling(drop_pending_updates=False, error_callback=polling_error_callback)
+    await tg_app.updater.start_polling(
+        poll_interval=0.5,
+        timeout=3,
+        drop_pending_updates=False,
+        error_callback=polling_error_callback,
+    )
 
     # 菜单
     commands = [