fix(openflare): improve SWOfflineDomains validation and snapshot diff logic

frontend/app/(main)/responses/components/contact-page-tab.tsx

@@ -194,6 +194,7 @@ export function ContactPageTab({
             preview={(html) => html}
             footerHint={null}
             showPreviewLink={false}
+            previewTitle='离线联系页实时预览'
           />
         </CardContent>
       </Card>

frontend/app/(main)/responses/components/error-page-tab.tsx

@@ -42,9 +42,7 @@ export function ErrorPageTab({
   optionMap: Record<string, string>;
 }) {
   const queryClient = useQueryClient();
-  const [fields, setFields] = useState<ErrorPageFields>(
-    defaultErrorPageFields,
-  );
+  const [fields, setFields] = useState<ErrorPageFields>(defaultErrorPageFields);
   const [tagError, setTagError] = useState<string | null>(null);
 
   useEffect(() => {

frontend/components/common/html-editor-workspace.tsx

@@ -21,6 +21,7 @@ type HtmlEditorWorkspaceProps = {
   preview?: (html: string) => string;
   footerHint?: React.ReactNode;
   showPreviewLink?: boolean;
+  previewTitle?: string;
 };
 
 /**
@@ -38,6 +39,7 @@ export function HtmlEditorWorkspace({
     </>
   ),
   showPreviewLink = true,
+  previewTitle = '源站错误页实时预览',
 }: HtmlEditorWorkspaceProps) {
   const containerRef = useRef<HTMLDivElement>(null);
   const [editorWidthPercent, setEditorWidthPercent] = useState(48);
@@ -145,7 +147,7 @@ export function HtmlEditorWorkspace({
           </div>
           <div className='flex-1 min-h-0 overflow-hidden bg-background'>
             <iframe
-              title='源站错误页实时预览'
+              title={previewTitle}
               sandbox=''
               srcDoc={previewSrcDoc}
               className='h-full w-full border-0 bg-background'