Add Binance live trading, anti-stuck open/close recovery, and configurable rate limits.

OKX/Binance LIVE share half_open and option_closed_perp_pending repair paths; private REST throttles default to 1s and are tunable in settings.

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

backend/app/strategy/session.py

@@ -30,9 +30,15 @@ _session: StrategySession | None = None
 def _has_open_position() -> bool:
     try:
         from ..models.db import get_db
+        from ..sim.matcher import BLOCKING_STATUSES
 
-        row = get_db().fetchone("SELECT status FROM positions WHERE id=1")
-        return bool(row and row["status"] == "open")
+        row = get_db().fetchone("SELECT status, group_id, option_inst_id FROM positions WHERE id=1")
+        if not row:
+            return False
+        st = str(row["status"] or "")
+        if st not in BLOCKING_STATUSES:
+            return False
+        return bool(row["group_id"] or row["option_inst_id"])
     except Exception:
         return False
 
@@ -45,7 +51,10 @@ def _held_option_inst_id() -> str | None:
         row = get_db().fetchone(
             "SELECT status, option_inst_id FROM positions WHERE id=1"
         )
-        if not row or row["status"] != "open":
+        if not row or row["status"] not in ("open", "half_open", "option_closed_perp_pending"):
+            return None
+        # 期权已平待平永续：不再钉期权盘口
+        if row["status"] == "option_closed_perp_pending":
             return None
         inst = str(row["option_inst_id"] or "").strip()
         return inst or None