chore: prettier format pass on branch files

Auto-format all files modified during the documents-hub-split feature
branch that were not yet aligned with the project's Prettier config
(single quotes, semicolons, trailing commas).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/components/files/file-preview-dialog.tsx

@@ -3,12 +3,7 @@
 import { useEffect, useState } from 'react';
 import { ExternalLink } from 'lucide-react';
 
-import {
-  Dialog,
-  DialogContent,
-  DialogHeader,
-  DialogTitle,
-} from '@/components/ui/dialog';
+import { Dialog, DialogContent, DialogHeader, DialogTitle } from '@/components/ui/dialog';
 import { apiFetch } from '@/lib/api/client';
 
 interface FilePreviewDialogProps {
@@ -99,11 +94,7 @@ export function FilePreviewDialog({
           )}
 
           {!loading && !error && previewUrl && isPdf && (
-            <iframe
-              src={previewUrl}
-              title={fileName ?? 'PDF Preview'}
-              className="h-full w-full"
-            />
+            <iframe src={previewUrl} title={fileName ?? 'PDF Preview'} className="h-full w-full" />
           )}
         </div>
       </DialogContent>