Add WeCom markdown alerts and keep target exits while strategy is paused.

Notify open/close/start/pause/fault with SIM vs LIVE venue labels; configure webhook in Settings.

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

backend/app/api/sim.py

@@ -115,6 +115,22 @@ async def sim_open_group(
     )
     if not r.ok:
         raise HTTPException(status_code=400, detail=r.detail)
+    try:
+        from ..notify import wecom
+
+        wecom.notify_open(
+            group_id=gid,
+            detail=r.detail,
+            extra={
+                "bias": bias,
+                "option_side": option_side,
+                "option_inst_id": option_inst,
+                "strike": pick.pair.strike,
+                "expiry_ymd": pick.pair.expiry_ymd,
+            },
+        )
+    except Exception:
+        pass
     return {
         "ok": True,
         **(r.data or {}),
@@ -141,6 +157,16 @@ async def sim_close_group(_user: Annotated[str, Depends(require_user)]) -> dict:
     if r.ok:
         # 与自动/紧急全平一致：成功全平后进入组间休息
         get_engine().enter_rest_after_close()
+        try:
+            from ..notify import wecom
+
+            wecom.notify_close(
+                reason="manual",
+                detail=r.detail,
+                data=r.data or {},
+            )
+        except Exception:
+            pass
     return {
         "ok": r.ok,
         "liquidity_wait": r.liquidity_wait,