Fix hub full-close double-booking trend plans.

Sync active plans after hub position close, merge final close snapshots per plan, and backfill missing trade records when ending an already-stopped plan.

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

hub_bridge.py

@@ -587,6 +587,38 @@ 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/trend/sync-flat", methods=["POST"])
+    @_hub_auth_required
+    def api_hub_trend_sync_flat():
+        """中控市价全平后：结束仍 active 的同币种同向趋势计划。"""
+        if not _ctx().get("has_trend"):
+            return jsonify({"ok": False, "msg": "该实例无趋势回调"}), 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
+        cfg = current_app.extensions.get("strategy_trend_cfg")
+        get_db = _ctx().get("get_db")
+        if not cfg or not callable(get_db):
+            return jsonify({"ok": False, "msg": "趋势配置未就绪"}), 500
+        from strategy_trend_register import sync_trend_plans_after_external_close
+
+        conn = get_db()
+        try:
+            return jsonify(sync_trend_plans_after_external_close(cfg, conn, symbol, side))
+        except Exception as e:
+            return jsonify({"ok": False, "msg": str(e)}), 500
+        finally:
+            conn.close()
+
     @app.route("/api/hub/trend/breakeven/<int:pid>", methods=["POST"])
     @_hub_auth_required
     def api_hub_trend_breakeven(pid):