feat: 借库审批支持手动完结——已通过(status=1)单可强制完结，库管/主管/超管可见

inventory-backend/app/api/v1/transactions.py

@@ -277,6 +277,29 @@ def approve_borrow_request(request_id):
         return jsonify({'code': 500, 'msg': f'服务器内部错误: {str(e)}'}), 500
 
 
+@trans_bp.route('/borrow/request/<int:request_id>/close', methods=['POST'])
+@jwt_required()
+@permission_required('op_borrow_approval')
+def close_borrow_request(request_id):
+    """
+    手动完结已通过的借库审批单（status 1-已通过 → 3-已完成）
+    参照出库审批的完结逻辑，供库管/主管在未走扫码借出时强制完结
+    """
+    try:
+        user_id, _ = get_current_user_info()
+        if not user_id:
+            return jsonify({'code': 401, 'msg': '用户未登录'}), 401
+
+        success, message, approval = BorrowApprovalService.mark_completed(request_id)
+        if not success:
+            return jsonify({'code': 400, 'msg': message}), 400
+
+        return jsonify({'code': 200, 'msg': message, 'data': approval.to_dict() if approval else None}), 200
+    except Exception as e:
+        traceback.print_exc()
+        return jsonify({'code': 500, 'msg': f'服务器内部错误: {str(e)}'}), 500
+
+
 # --- 获取借库审批单列表 ---
 @trans_bp.route('/borrow/request', methods=['GET'])
 @jwt_required()