style(e2e): apply prettier to the matcher and auth-setup edits

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

frontend/e2e/mocks/world.ts

@@ -136,9 +136,7 @@ export class MockWorld {
 
         // Key on the request's variables, not the entry's: an entry written without variables would
         // otherwise merge every flow's subscribers onto one stream, and the second would join delta-only.
-        return entry
-            ? { entry, streamKey: `sub:${operationName}:${stableStringify(variables ?? {})}` }
-            : undefined;
+        return entry ? { entry, streamKey: `sub:${operationName}:${stableStringify(variables ?? {})}` } : undefined;
     }
 
     registerSocket(socket: MockSocket): void {

frontend/e2e/specs/auth.setup.ts

@@ -18,7 +18,9 @@ setup('authenticate', async ({ page }) => {
     const skip = page.getByRole('button', { name: 'Skip for now' });
     // The user menu is labelled with the signed-in address, so derive the "logged in" signal
     // from E2E_USER rather than a hardcoded admin@ (there is no button named "flows").
-    const loggedIn = page.getByRole('button', { name: new RegExp(E2E_USER.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'), 'i') });
+    const loggedIn = page.getByRole('button', {
+        name: new RegExp(E2E_USER.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'), 'i'),
+    });
 
     await expect(skip.or(loggedIn).first()).toBeVisible({ timeout: 15_000 });