refactor: enforce 800 line source limits

web/src/views/AppShellRouteView.vue

@@ -151,7 +151,7 @@
           v-else-if="activeView === 'documents' && detailMode && selectedRequest"
           :request="selectedRequest"
           :back-label="detailBackLabel"
-          @back-to-requests="closeRequestDetail"
+          @back-to-requests="handleDocumentDetailBack"
           @open-assistant="openSmartEntry"
           @request-updated="handleRequestUpdated"
           @request-deleted="handleDetailRequestDeleted"
@@ -362,6 +362,7 @@ const {
   smartEntryRevealToken,
   smartEntrySessionId,
   toast,
+  detailReturnTarget,
   topBarView
 } = useAppShell()
 
@@ -370,6 +371,7 @@ const ENTERPRISE_DISPLAY_NAME = '远光软件股份有限公司'
 const filteredNavItems = computed(() => filterNavItemsByAccess(navItems, currentUser.value))
 const isAiShellMode = computed(() => workbenchMode.value === 'ai')
 const isWorkbenchAiMode = computed(() => activeView.value === 'workbench' && workbenchMode.value === 'ai')
+const DOCUMENT_DETAIL_RETURN_TARGETS = new Set(['workbench', 'conversation'])
 const DETAIL_TOPBAR_FALLBACKS = {
   audit: {
     title: '规则中心详情',
@@ -412,6 +414,40 @@ const resolvedDetailKpis = computed(() => (
   customDetailTopBarActive.value ? detailTopBarPayload.value?.kpis || [] : []
 ))
 
+function resolveDocumentDetailReturnTarget(value) {
+  const target = String(value || '').trim()
+  return DOCUMENT_DETAIL_RETURN_TARGETS.has(target) ? target : ''
+}
+
+function resolveActiveAiConversationSnapshot() {
+  const conversationId = String(aiActiveConversationId.value || '').trim()
+  if (!conversationId) {
+    return null
+  }
+  const history = aiConversationHistory.value.length
+    ? aiConversationHistory.value
+    : loadAiWorkbenchConversationHistory(currentUser.value || {})
+  return history.find((item) => String(item.id || item.conversationId || '').trim() === conversationId) || null
+}
+
+async function handleDocumentDetailBack() {
+  const shouldRestoreConversation = detailReturnTarget.value === 'conversation'
+  const activeConversation = shouldRestoreConversation ? resolveActiveAiConversationSnapshot() : null
+  const navigation = closeRequestDetail()
+  if (navigation && typeof navigation.then === 'function') {
+    await navigation
+  }
+
+  if (!shouldRestoreConversation || !activeConversation) {
+    return
+  }
+
+  workbenchMode.value = 'ai'
+  sidebarCollapsed.value = false
+  await nextTick()
+  dispatchAiSidebarCommand('open-recent', activeConversation)
+}
+
 function openWorkbenchDocument(payload = {}) {
   const payloadClaimId = String(payload.claimId || payload.claim_id || '').trim()
   const payloadId = String(payload.id || '').trim()
@@ -436,13 +472,12 @@ function openWorkbenchDocument(payload = {}) {
     || String(item.claimNo || '').trim() === requestId
     || String(item.documentNo || '').trim() === requestId
   ))
-  const returnTo = (
-    String(payload.returnTo || '').trim() === 'workbench'
-    || String(payload.source || '').trim() === 'workbench'
+  const explicitReturnTo = resolveDocumentDetailReturnTarget(payload.returnTo)
+  const fallbackToWorkbench = (
+    String(payload.source || '').trim() === 'workbench'
     || activeView.value === 'workbench'
   )
-    ? 'workbench'
-    : ''
+  const returnTo = explicitReturnTo || (fallbackToWorkbench ? 'workbench' : '')
   const payloadIdIsBusinessNo = isBusinessDocumentReference(payloadId)
   const fallbackClaimId = payloadClaimId || (payloadClaimNo || payloadIdIsBusinessNo ? '' : payloadId || requestId)
   const fallbackClaimNo = payloadClaimNo || (payloadIdIsBusinessNo ? payloadId : fallbackClaimId ? '' : requestId)