fix(e2e): use uniqueUsername helper in integration.spec

Date.now() can collide across workers running on the same millisecond
boundary. The worker-aware helper that the rest of the suite uses
side-steps that without changing the test's intent.

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

dashboard/tests/e2e/integration/integration.spec.ts

@@ -87,9 +87,12 @@ test('end-to-end: app + domain + script + route via dashboard → invoke via pub
 });
 
 test('api key minted via dashboard works as a CLI bearer, then revoke disables it', async ({
-	page
+	page,
+	uniqueUsername
 }) => {
-	const name = `e2e-cli-${Date.now()}`;
+	// Worker-aware unique helper instead of Date.now() — keeps two
+	// workers from minting the same name on the same millisecond.
+	const name = uniqueUsername('cli');
 
 	// 1. Mint the key from /profile and capture the revealed token.
 	await page.goto('/admin/profile');