style(web): 更新差旅报销创建页面样式和业务脚本，增强前端交互和状态管理

web/src/composables/useAppShell.js

@@ -3,9 +3,13 @@ import { useRoute, useRouter } from 'vue-router'
 
 import { useNavigation, navItems } from './useNavigation.js'
 import { useRequests } from './useRequests.js'
+import { useSystemState } from './useSystemState.js'
 import { useToast } from './useToast.js'
+import { fetchLatestConversation } from '../services/orchestrator.js'
 import { normalizeRequestForUi } from '../utils/requestViewModel.js'
 
+const SESSION_TYPE_EXPENSE = 'expense'
+
 function isPlaceholderValue(value) {
   const text = String(value || '').trim()
   if (!text) {
@@ -101,6 +105,7 @@ export function useAppShell() {
     rejectRequest,
     reload: reloadRequests
   } = useRequests()
+  const { currentUser } = useSystemState()
   const { toast } = useToast()
 
   const customRange = ref({ start: '2024-07-06', end: '2024-07-12' })
@@ -179,7 +184,34 @@ export function useAppShell() {
     smartEntrySessionId.value += 1
   }
 
-  function openSmartEntry(payload = {}) {
+  function resolveCurrentUserId() {
+    const user = currentUser.value || {}
+    return String(user.username || user.name || 'anonymous').trim() || 'anonymous'
+  }
+
+  async function resolveSmartEntryConversation(payload = {}) {
+    if (payload.conversation) {
+      return payload.conversation
+    }
+
+    if (!payload.restoreLatestConversation) {
+      return null
+    }
+
+    try {
+      const latestPayload = await fetchLatestConversation(resolveCurrentUserId(), SESSION_TYPE_EXPENSE, {
+        preferRecoverable: true
+      })
+      return latestPayload?.found ? latestPayload.conversation || null : null
+    } catch (error) {
+      console.warn('Failed to restore latest expense conversation for smart entry:', error)
+      toast(error?.message || '恢复最近报销会话失败，请稍后重试。')
+      return null
+    }
+  }
+
+  async function openSmartEntry(payload = {}) {
+    const conversation = await resolveSmartEntryConversation(payload)
     smartEntryOpen.value = true
 
     smartEntryContext.value = {
@@ -187,7 +219,7 @@ export function useAppShell() {
       source: payload.source ?? 'workbench',
       request: payload.request ?? selectedRequest.value,
       files: Array.isArray(payload.files) ? payload.files : [],
-      conversation: payload.conversation ?? null
+      conversation
     }
     smartEntrySessionId.value += 1
   }