feat: 采购申请完结功能移到批次主行,与出库审批一致

- 移除展开行内的单条完结按钮(需点开),改为主行'完结本批'直接可见
- 后端 batch-approve 支持 action=close(批次内已通过→已完结)
- 超管/库管在主行操作列即可看到并完结

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

@@ -273,20 +273,23 @@ def batch_approve_purchase():
         action = data.get('action', 'approve')
         reject_reason = data.get('reject_reason')
 
-        # 若传 batch_key（request_no 去掉末尾流水号的前缀），查出该批次所有待审批记录
+        # 若传 batch_key（request_no 去掉末尾流水号的前缀），查出该批次对应状态的记录
         if batch_key:
             from app.models.purchase import PurchaseRequest
+            # 完结本批 → 找「已通过(1)」的单；审批/驳回 → 找「待审批(0)」的单
+            target_status = 1 if action == 'close' else 0
             records = PurchaseRequest.query.filter(
                 PurchaseRequest.request_no.like(f"{batch_key}-%"),
-                PurchaseRequest.status == 0
+                PurchaseRequest.status == target_status
             ).all()
             ids = [r.id for r in records]
             if not ids:
-                return jsonify({'code': 400, 'msg': '该批次没有待审批的记录'}), 400
+                status_text = '已通过' if action == 'close' else '待审批'
+                return jsonify({'code': 400, 'msg': f'该批次没有{status_text}的记录'}), 400
 
         if not ids or not isinstance(ids, list):
             return jsonify({'code': 400, 'msg': 'ids 或 batch_key 不能为空'}), 400
-        if action not in ('approve', 'reject'):
+        if action not in ('approve', 'reject', 'close'):
             return jsonify({'code': 400, 'msg': '无效的审批操作'}), 400
         if action == 'reject' and not reject_reason:
             return jsonify({'code': 400, 'msg': '驳回时必须提供原因'}), 400