feat: 增强员工管理与报销单全流程功能

- 新增员工Excel导入服务(employee_spreadsheet)及导入/导出API端点
- 员工服务增加批量创建、邮箱唯一校验、组织架构关联等能力
- 报销单提交补充身份回填、部门信息透传及预审结果展示优化
- 认证流程增加部门信息(departmentName)并在schema中同步扩展
- 用户Agent服务增加部门关联与报销单回填逻辑
- 前端员工管理页面全面重构，新增导入导出、搜索过滤、分页等功能
- 前端审批中心、审计、差旅报销等视图交互与样式优化
- 新增TableLoadingState共享组件及员工导入测试用例

web/src/views/TravelRequestDetailView.vue

@@ -394,7 +394,7 @@
           <span>返回报销列表</span>
         </button>
         <div v-if="isDraftRequest" class="approval-action-group" aria-label="申请操作">
-          <button class="reject-action" type="button" :disabled="actionBusy" @click="handleDeleteDraft">
+          <button class="reject-action" type="button" :disabled="actionBusy" @click="handleDeleteRequest">
             <i class="mdi mdi-trash-can-outline"></i>
             {{ deleteBusy ? '删除中' : '删除草稿' }}
           </button>
@@ -403,6 +403,22 @@
             {{ submitBusy ? '提交中' : '提交审批' }}
           </button>
         </div>
+        <div v-else-if="canManageCurrentClaim" class="approval-action-group" aria-label="单据管理操作">
+          <button
+            v-if="canReturnRequest"
+            class="return-action"
+            type="button"
+            :disabled="actionBusy"
+            @click="handleReturnRequest"
+          >
+            <i class="mdi mdi-undo"></i>
+            {{ returnBusy ? '退回中' : '退回单据' }}
+          </button>
+          <button class="reject-action" type="button" :disabled="actionBusy" @click="handleDeleteRequest">
+            <i class="mdi mdi-trash-can-outline"></i>
+            {{ deleteBusy ? '删除中' : '删除单据' }}
+          </button>
+        </div>
         <p v-else class="detail-action-hint">当前单据已进入流程，详情页仅展示状态与费用明细。</p>
       </footer>
     </div>
@@ -465,10 +481,10 @@
 
     <ConfirmDialog
       :open="deleteDialogOpen"
-      badge="删除草稿"
+      :badge="deleteActionLabel"
       badge-tone="danger"
-      :title="`确认删除草稿 ${request.id} 吗？`"
-      description="删除后该草稿及其当前费用明细将不可恢复，请确认本次操作。"
+      :title="deleteDialogTitle"
+      :description="deleteDialogDescription"
       cancel-text="取消"
       confirm-text="确认删除"
       busy-text="删除中..."
@@ -476,7 +492,23 @@
       confirm-icon="mdi mdi-trash-can-outline"
       :busy="deleteBusy"
       @close="closeDeleteDialog"
-      @confirm="confirmDeleteDraft"
+      @confirm="confirmDeleteRequest"
+    />
+
+    <ConfirmDialog
+      :open="returnDialogOpen"
+      badge="退回单据"
+      badge-tone="warning"
+      :title="`确认退回 ${request.id} 吗？`"
+      description="退回后该单据会进入待补充状态，申请人需要补充后重新提交。"
+      cancel-text="取消"
+      confirm-text="确认退回"
+      busy-text="退回中..."
+      confirm-tone="primary"
+      confirm-icon="mdi mdi-undo"
+      :busy="returnBusy"
+      @close="closeReturnDialog"
+      @confirm="confirmReturnRequest"
     />
   </section>
 </template>