feat(borrow,outbound): 库管(WAREHOUSE_MGR)代建申请强制审批

- submit/create 新增 force_approval：库管建单无视物料是否需审批，一律走审批
- 路由按当前角色为 WAREHOUSE_MGR 传 true；未选审批人返回明确业务错误

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

@@ -427,7 +427,8 @@ def create_outbound_request():
             allowed_approvers=allowed_approvers,
             remark=data.get('remark'),
             approver_id=approver_id,
-            outbound_type=data.get('outbound_type')  # 出库类型（申请时确定）
+            outbound_type=data.get('outbound_type'),  # 出库类型（申请时确定）
+            force_approval=((user_role or '').upper() == 'WAREHOUSE_MGR')  # 库管代建 → 强制审批
         )
 
         return jsonify({

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

@@ -248,7 +248,8 @@ def submit_borrow_request():
             allowed_approvers=allowed_approvers,
             remark=data.get('remark'),
             approver_id=approver_id,
-            borrower_name=current_username
+            borrower_name=current_username,
+            force_approval=((user_role or '').upper() == 'WAREHOUSE_MGR')  # 库管代建 → 强制审批
         )
 
         return jsonify({'code': 200, 'msg': '借库申请已提交', 'data': approval.to_dict()}), 200