feat: 数字员工财务报告体系与定时提醒及看板快照调度

- 新增数字员工财务报告生成、邮件投递与渲染调度器
- 引入员工画像扫描调度与定时提醒任务
- 完善财务看板快照、排行口径与部门人员占比计算
- 优化数字员工工作看板仪表盘与技能目录
- 增强前端总览页图表、工作台摘要与顶部导航栏交互
- 新增差旅申请规划推动提醒与报销创建会话状态管理
- 补充财务报告、看板调度、数字员工工作记录测试覆盖

web/src/views/TravelRequestDetailView.vue

@@ -476,6 +476,16 @@
             <i class="mdi mdi-trash-can-outline"></i>
             {{ deleteBusy ? '删除中' : deleteActionLabel }}
           </button>
+          <button
+            v-if="canModifyReturnedApplication"
+            class="secondary-action"
+            type="button"
+            :disabled="actionBusy"
+            @click="handleModifyApplication"
+          >
+            <i class="mdi mdi-pencil-outline"></i>
+            修改申请
+          </button>
           <button class="approve-action" type="button" :disabled="!canSubmit" @click="handleSubmit">
             <i :class="submitActionIcon"></i>
             {{ submitActionLabel }}
@@ -773,3 +783,4 @@
 <script src="./scripts/TravelRequestDetailView.js"></script>
 <style scoped src="../assets/styles/views/travel-request-detail-view.css"></style>
 <style scoped src="../assets/styles/views/travel-request-detail-view-part2.css"></style>
+<style scoped src="../assets/styles/views/travel-request-detail-responsive.css"></style>