feat: delay startup notification until after WebSocket connection is established

Author: faithleysath

main.py

@@ -418,15 +418,7 @@ async def send_forward_from_message_ids(group_id: int, title: str, user_id: int,
 async def main():
     log.info("程序启动, WS_URL=%s, 通知群=%d, 白名单=%s", WS_URL, INTERNAL_GROUP_ID, WHITELIST)
     log.info("里程碑阈值(分钟): %s", MILESTONES)
-
-    try:
-        await client.send_group_msg(
-            group_id=str(INTERNAL_GROUP_ID),
-            message="🤖 客服机器人已启动，开始监听消息。",
-        )
-        log.info("启动通知已发送至群 %d", INTERNAL_GROUP_ID)
-    except Exception as e:
-        log.error("发送启动通知失败: %s", e, exc_info=True)
+    startup_notified = False
 
     # 启动定时巡检后台任务
     asyncio.create_task(monitor_loop())
@@ -435,6 +427,17 @@ async def main():
     while True:
         log.info("正在连接 WebSocket...")
         async for event in client:
+            if not startup_notified:
+                try:
+                    await client.send_group_msg(
+                        group_id=str(INTERNAL_GROUP_ID),
+                        message="🤖 客服机器人已启动，开始监听消息。",
+                    )
+                    startup_notified = True
+                    log.info("启动通知已发送至群 %d", INTERNAL_GROUP_ID)
+                except Exception as e:
+                    log.error("发送启动通知失败: %s", e, exc_info=True)
+
             log.debug("收到事件: type=%s, post_type=%s", type(event).__name__, getattr(event, 'post_type', '?'))
             match event:
                 # 0. 自动通过好友申请