Show strategy rules in fold; larger nav; notify only when cannot open.

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

backend/app/strategy/open_capacity.py

@@ -171,13 +171,16 @@ def assess_open_capacity(db: Database | None = None) -> dict[str, Any]:
 
 
 def maybe_notify_funds_short(cap: dict[str, Any] | None = None) -> None:
-    """交易账户资金不足时企业微信推送：不足期间只推一次。"""
+    """仅在「不能开」时推送一次；能开绝不通知。"""
     global _notified_while_short
     cap = cap or assess_open_capacity()
-    short = cap.get("perp_can_open") is False or cap.get("option_can_open") is False
-    if not short:
+    # 能开 / 未知：不通知；资金恢复则重置，便于下次不足再提醒一次
+    if cap.get("funds_ok") is True:
         _notified_while_short = False
         return
+    cannot = cap.get("perp_can_open") is False or cap.get("option_can_open") is False
+    if not cannot:
+        return
     if _notified_while_short:
         return
     _notified_while_short = True