[backport rh-test] fix: Handle vite:preloadError for graceful deployment asset updates (#6616)

Backport of #6609 to `rh-test`

Automatically created by backport workflow.

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-6616-backport-rh-test-fix-Handle-vite-preloadError-for-graceful-deployment-asset-updates-2a36d73d365081ba813fca8d72492cac)
by [Unito](https://www.unito.io)

Co-authored-by: Jin Yi <jin12cc@gmail.com>

src/App.vue

@@ -16,6 +16,10 @@ import { computed, onMounted } from 'vue'
 
 import GlobalDialog from '@/components/dialog/GlobalDialog.vue'
 import config from '@/config'
+import { t } from '@/i18n'
+import { useWorkflowStore } from '@/platform/workflow/management/stores/workflowStore'
+import { app } from '@/scripts/app'
+import { useDialogService } from '@/services/dialogService'
 import { useWorkspaceStore } from '@/stores/workspaceStore'
 import { useConflictDetection } from '@/workbench/extensions/manager/composables/useConflictDetection'
 
@@ -23,6 +27,8 @@ import { electronAPI, isElectron } from './utils/envUtil'
 
 const workspaceStore = useWorkspaceStore()
 const conflictDetection = useConflictDetection()
+const workflowStore = useWorkflowStore()
+const dialogService = useDialogService()
 const isLoading = computed<boolean>(() => workspaceStore.spinner)
 const handleKey = (e: KeyboardEvent) => {
   workspaceStore.shiftDown = e.shiftKey
@@ -49,6 +55,26 @@ onMounted(() => {
     document.addEventListener('contextmenu', showContextMenu)
   }
 
+  // Handle Vite preload errors (e.g., when assets are deleted after deployment)
+  window.addEventListener('vite:preloadError', async (_event) => {
+    // Auto-reload if app is not ready or there are no unsaved changes
+    if (!app.vueAppReady || !workflowStore.activeWorkflow?.isModified) {
+      window.location.reload()
+    } else {
+      // Show confirmation dialog if there are unsaved changes
+      await dialogService
+        .confirm({
+          title: t('g.vitePreloadErrorTitle'),
+          message: t('g.vitePreloadErrorMessage')
+        })
+        .then((confirmed) => {
+          if (confirmed) {
+            window.location.reload()
+          }
+        })
+    }
+  })
+
   // Initialize conflict detection in background
   // This runs async and doesn't block UI setup
   void conflictDetection.initializeConflictDetection()

src/locales/en/main.json

@@ -27,6 +27,8 @@
     "logoAlt": "ComfyUI Logo",
     "refresh": "Refresh",
     "refreshNode": "Refresh Node",
+    "vitePreloadErrorTitle": "New Version Available",
+    "vitePreloadErrorMessage": "A new version of the app has been released. Would you like to reload?\nIf not, some parts of the app might not work as expected.\nFeel free to decline and save your progress before reloading.",
     "terminal": "Terminal",
     "logs": "Logs",
     "videoFailedToLoad": "Video failed to load",