修复币本位平仓/到期后未自动卖回，并消除模拟盘卖币时数据库锁定。

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

lib/options/options_coin_open_lib.py

@@ -475,3 +475,65 @@ def maybe_sell_spot_after_close(
             conn.close()
         except Exception:
             pass
+
+
+def sweep_spot_after_options_flat(
+    cfg: dict[str, Any],
+    ex: Any | None = None,
+) -> dict[str, Any]:
+    """币本位:某标的已无期权持仓时,把交易户该标的残留币卖回 USDT.
+
+    覆盖到期结算、限价平仓后同步关仓等未走买一平仓卖回路径的情况。
+    """
+    if not is_coin_margin_mode():
+        return {"ok": True, "skipped": True, "msg": "非币本位"}
+    exchange = ex if ex is not None else cfg.get("exchange_options")
+    if exchange is None:
+        return {"ok": False, "msg": "exchange 未就绪"}
+    live_uly: set[str] = set()
+    try:
+        rows = cfg["fetch_option_positions"](exchange) or []
+        for p in rows:
+            try:
+                if abs(float(p.get("pos") or 0)) <= 1e-12:
+                    continue
+            except (TypeError, ValueError):
+                continue
+            inst = str(p.get("instId") or p.get("inst_id") or "").strip()
+            if not inst:
+                continue
+            live_uly.add(inst.split("-")[0].upper())
+    except Exception as e:
+        return {"ok": False, "msg": f"持仓查询失败: {e}"}
+
+    from lib.options.options_db import init_options_tables
+
+    sold: list[dict[str, Any]] = []
+    for uly in ("BTC", "ETH"):
+        if uly in live_uly:
+            continue
+        try:
+            avail = _spot_bridge.fetch_trading_coin_available(exchange, uly)
+            if avail is None or float(avail) <= 1e-8:
+                continue
+        except Exception:
+            continue
+        conn = cfg["get_db"]()
+        try:
+            init_options_tables(conn)
+            out = _spot_bridge.sell_residual_after_option_flat(
+                conn, exchange, underlying=uly, inst_id=None
+            )
+            sold.append({"underlying": uly, **(out or {})})
+            try:
+                conn.commit()
+            except Exception:
+                pass
+        except Exception as e:
+            sold.append({"underlying": uly, "ok": False, "msg": str(e)})
+        finally:
+            try:
+                conn.close()
+            except Exception:
+                pass
+    return {"ok": True, "results": sold, "skipped": not sold}