修复粉尘桥拦开仓，并继续消除模拟盘嵌套握锁导致的 database is locked。

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

lib/options/options_coin_open_lib.py

@@ -69,6 +69,12 @@ def open_coin_option_buy_full(
     parts = inst_id.split("-")
     underlying = (parts[0] if parts else "ETH").upper()
 
+    # 先清粉尘 pending 桥(自管短连接),再开业务连接,避免模拟盘读余额嵌套锁库
+    try:
+        _spot_bridge.clear_dust_pending_sell_bridges(cfg["get_db"], ex)
+    except Exception:
+        pass
+
     conn = cfg["get_db"]()
     try:
         init_options_tables(conn)
@@ -142,6 +148,11 @@ def open_coin_option_buy_full(
         buy_usdt = float(plan["buy_usdt"])
         sheets = int(plan["sheets"])
 
+        # 买币/读余额(模拟盘写钱包)前必须提交释放锁
+        try:
+            conn.commit()
+        except Exception:
+            pass
         # 1) 仅买「权利金×现货缓冲」所需 USDT,不全额兑换预算
         coin_before = _spot_bridge.fetch_trading_coin_available(ex, underlying) or 0.0
         buy = _spot_bridge.spot_market_buy_coin_with_usdt(ex, underlying=underlying, usdt_amount=buy_usdt)
@@ -161,6 +172,10 @@ def open_coin_option_buy_full(
             inst_id=inst_id,
             message="已买币,待开期权",
         )
+        try:
+            conn.commit()
+        except Exception:
+            pass
         # 等余额落账
         time.sleep(1.5)
         try:
@@ -501,6 +516,12 @@ def sweep_spot_after_options_flat(
     except Exception as e:
         return {"ok": False, "msg": f"持仓查询失败: {e}"}
 
+    # 先关掉只剩粉尘的 pending 桥,避免拦开仓又看不到重试按钮
+    try:
+        _spot_bridge.clear_dust_pending_sell_bridges(cfg["get_db"], exchange)
+    except Exception:
+        pass
+
     sold: list[dict[str, Any]] = []
     for uly in ("BTC", "ETH"):
         if uly in live_uly: