Add auto break-even toggle and WeCom hub notifications.

Desktop can auto-pull stop to open+/-1 after a 3$ favorable move; hub pushes open/close events and a 23:00 BJT daily summary via webhook.

Co-authored-by: Cursor <cursoragent@cursor.com>

app/config.py

@@ -23,6 +23,11 @@ class Config:
     PORT = int(os.getenv("PORT", "5800"))
     PUBLIC_BASE_URL = os.getenv("PUBLIC_BASE_URL", "http://127.0.0.1:5800").rstrip("/")
 
+    # 企业微信群机器人（也可在网页「系统设置」覆盖）
+    WECOM_WEBHOOK_URL = os.getenv("WECOM_WEBHOOK_URL", "").strip()
+    WECOM_DAILY_HOUR = int(os.getenv("WECOM_DAILY_HOUR", "23"))
+    WECOM_DAILY_MINUTE = int(os.getenv("WECOM_DAILY_MINUTE", "0"))
+
     _db = os.getenv("DATABASE_URL", f"sqlite:///{DATA_DIR / 'gold_monitor.db'}")
     if _db.startswith("sqlite:///"):
         # 相对路径转到仓库根