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>

tests/e2e/visual/snapshots.spec.ts

@@ -78,16 +78,10 @@ test.describe('Visual regression', () => {
     await page.waitForLoadState('networkidle');
 
     // Expand the Clients system root.
-    const expandBtn = page
-      .locator('aside')
-      .getByRole('button', { name: 'Expand' })
-      .first();
+    const expandBtn = page.locator('aside').getByRole('button', { name: 'Expand' }).first();
     const hasExpand = await expandBtn.isVisible({ timeout: 5_000 }).catch(() => false);
     if (!hasExpand) {
-      test.skip(
-        true,
-        'No expandable folder found in sidebar — hub-entity-folder baseline skipped',
-      );
+      test.skip(true, 'No expandable folder found in sidebar — hub-entity-folder baseline skipped');
       return;
     }
     await expandBtn.click();