feat: 优化差旅报销预审流程与个人工作台 UI 体系

- 完善 user_agent_application 申请差旅报销预审槽位与消息组装
- 增强预算助理报告与风险建议卡片交互
- 重构登录页视觉样式与移动端响应式适配
- 优化个人工作台、文档中心、政策中心、员工管理等页面布局
- 拆分 travelRequestDetailPreReviewModel 为 advice/submit 模型
- 补充报销草稿、风险复核、Item Sync 与模板执行器测试覆盖

web/src/views/AppShellRouteView.vue

@@ -8,6 +8,15 @@
     }"
   >
     <div class="mobile-overlay" aria-hidden="true" @click="mobileSidebarOpen = false"></div>
+    <button
+      type="button"
+      class="mobile-hamburger-btn"
+      aria-label="打开移动端导航"
+      :aria-expanded="mobileSidebarOpen ? 'true' : 'false'"
+      @click="mobileSidebarOpen = true"
+    >
+      <i class="mdi mdi-menu" aria-hidden="true"></i>
+    </button>
     <Transition name="login-entry-veil">
       <div v-if="loginEntryAnimating" class="login-entry-veil" aria-live="polite" aria-label="登录成功，正在进入工作台">
         <FloatingLightBandWindow
@@ -178,6 +187,7 @@
       :initial-files="smartEntryContext.files"
       :initial-conversation="smartEntryContext.conversation"
       :initial-session-type="smartEntryContext.sessionType"
+      :initial-budget-context="smartEntryContext.budgetContext"
       :entry-source="smartEntryContext.source"
       :request-context="smartEntryContext.request"
       :invalidated-draft-claim-id="smartEntryInvalidatedDraftClaimId"