feat(scrap): 前端报废申请 / 报废审批页 + API（对齐出库版式）

- api/scrap.ts 新增 submitScrapRequest/checkScrapApproval/getScrapApprovals/approveScrapRequest/executeScrapByRequest
- apply: 选库存(带 source_table+stock_id)/报废数量/原因/按需审批人提交
- approval: 顶部审批状态筛选+刷新、展开明细、列名对齐出库、分页含 sizes、按单执行弹窗
- 路由挂载 /scrap/apply、/scrap/approval

inventory-web/src/router/index.ts

@@ -262,6 +262,18 @@ const routes: Array<RouteRecordRaw> = [
                 name: 'ScrapCreate',
                 component: () => import('@/views/operation/scrap/create.vue'),
                 meta: { title: '新建报废' }
+            },
+            {
+                path: 'apply',
+                name: 'ScrapApply',
+                component: () => import('@/views/operation/scrap/apply/index.vue'),
+                meta: { title: '报废申请' }
+            },
+            {
+                path: 'approval',
+                name: 'ScrapApproval',
+                component: () => import('@/views/operation/scrap/approval/index.vue'),
+                meta: { title: '报废审批' }
             }
         ]
     },