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/src/composables/useNavigation.js

@@ -147,7 +147,7 @@ export function useNavigation() {
       return resolveAppViewFromRoute(route)
     },
     set(view) {
-      setView(view)
+      void setView(view)
     }
   })
 
@@ -159,10 +159,10 @@ export function useNavigation() {
     const targetName = resolveTargetRouteName(view)
 
     if (route.name === targetName) {
-      return
+      return Promise.resolve()
     }
 
-    router.push({ name: targetName, params: {}, query: {}, hash: '' })
+    return router.push({ name: targetName, params: {}, query: {}, hash: '' })
   }
 
   return { activeView, currentView, setView, navItems }