fix: Gate hub close sync and trade record open stop-loss snapshot

Sync order monitors from Gate position history after hub flat close. Store and display initial_stop_loss in trade records instead of post-amend exchange stops.

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

hub_bridge.py

@@ -207,6 +207,7 @@ def install_on_app(
     ohlcv_fn=None,
     account_fn=None,
     volume_rank_fn=None,
+    reconcile_hub_flat_fn=None,
 ):
     app.config["HUB_CTX"] = {
         "exchange": exchange,
@@ -219,6 +220,7 @@ def install_on_app(
         "views": views,
         "ohlcv_fn": ohlcv_fn,
         "volume_rank_fn": volume_rank_fn,
+        "reconcile_hub_flat_fn": reconcile_hub_flat_fn,
     }
     install_hub_embed_headers(app)
     configure_hub_embed_session(app)
@@ -607,6 +609,40 @@ def register_hub_routes(app):
             return jsonify({"ok": False, "msg": "该实例无趋势回调"}), 400
         return jsonify(_invoke_view_get("stop_trend_pullback", f"/stop_trend_pullback/{pid}"))
 
+    @app.route("/api/hub/order/sync-flat", methods=["POST"])
+    @_hub_auth_required
+    def api_hub_order_sync_flat():
+        """中控市价全平后：同步 order_monitors 并读 Gate 平仓历史写交易记录。"""
+        fn = _ctx().get("reconcile_hub_flat_fn")
+        if not callable(fn):
+            return jsonify({"ok": False, "msg": "该实例未配置 order sync-flat"}), 400
+        body = request.get_json(silent=True) or {}
+        symbol = (body.get("symbol") or request.form.get("symbol") or "").strip()
+        side = (
+            body.get("side")
+            or body.get("direction")
+            or request.form.get("side")
+            or ""
+        ).strip().lower()
+        if not symbol:
+            return jsonify({"ok": False, "msg": "symbol 不能为空"}), 400
+        if side not in ("long", "short"):
+            return jsonify({"ok": False, "msg": "side 须为 long 或 short"}), 400
+        get_db = _ctx().get("get_db")
+        if not callable(get_db):
+            return jsonify({"ok": False, "msg": "HUB_CTX 缺少 get_db"}), 500
+        conn = get_db()
+        try:
+            out = fn(conn, symbol, side)
+            if not isinstance(out, dict):
+                out = {"ok": True, "synced": int(out or 0)}
+            conn.commit()
+            return jsonify(out)
+        except Exception as e:
+            return jsonify({"ok": False, "msg": str(e)}), 500
+        finally:
+            conn.close()
+
     @app.route("/api/hub/trend/sync-flat", methods=["POST"])
     @_hub_auth_required
     def api_hub_trend_sync_flat():