feat(web): 工作台 AI 模式与差旅/风险建议交互优化

- 新增 PersonalWorkbenchAiMode 组件、AI 侧边栏与 orb 机器人视觉资源
- 新增 aiApplicationDraftModel / aiExpenseDraftModel / aiWorkbenchConversationStore
  及业务准入 aiSidebarBusinessAccess，支撑 AI 模式下的申请与报销草稿
- 顶栏、侧边栏、工作台样式重构，适配 AI 模式切换与响应式布局
- 同步 steward plan/off_topic、差旅报销引导流、风险建议卡片等测试

web/tests/travel-reimbursement-guided-flow.test.mjs

@@ -454,6 +454,8 @@ test('guided flow is local until final confirmation or collected query handoff',
   assert.match(createViewScript, /if \(await handleGuidedComposerSubmit\(options\)\) \{[\s\S]*return null[\s\S]*\}[\s\S]*return submitComposerInternal\(options\)/)
   assert.match(suggestedActionsScript, /ASSISTANT_SCOPE_ACTION_SWITCH/)
   assert.match(suggestedActionsScript, /actionPayload\.carry_text/)
+  assert.match(createViewScript, /targetSessionType === SESSION_TYPE_EXPENSE[\s\S]*carryText === '我要报销'[\s\S]*pushExpenseSceneSelectionPrompt\(carryText\)/)
+  assert.match(suggestedActionsScript, /targetSessionType === SESSION_TYPE_EXPENSE[\s\S]*carryText === '我要报销'[\s\S]*pushExpenseSceneSelectionPrompt\(carryText\)/)
   assert.match(submitComposerScript, /resolveAssistantScopeGuard/)
   assert.match(submitComposerScript, /skipScopeGuard/)
   assert.match(guidedFlowScript, /submitExistingComposer\(submitOptions\)/)