Fix E2E seeding 404 by using correct basePath for workflowui API route

The workflowui Next.js app uses basePath: '/workflowui', so its API
routes are served at /workflowui/api/setup, not /api/setup. The global
setup was calling the wrong path, resulting in a 404 and aborting the
entire E2E test suite.

https://claude.ai/code/session_019xbfXDfsSMKjWoH6BkaPx6

e2e/global.setup.ts

@@ -35,9 +35,10 @@ async function globalSetup() {
   await new Promise(resolve => setTimeout(resolve, 2000))
 
   // ── 3. Seed database ────────────────────────────────────────────────────
+  // workflowui uses basePath: '/workflowui', so the setup route is at /workflowui/api/setup
   const setupUrl = process.env.PLAYWRIGHT_BASE_URL
-    ? new URL('/api/setup', process.env.PLAYWRIGHT_BASE_URL.replace(/\/workflowui\/?$/, '')).href
-    : 'http://localhost:3000/api/setup'
+    ? new URL('/workflowui/api/setup', process.env.PLAYWRIGHT_BASE_URL.replace(/\/workflowui\/?$/, '')).href
+    : 'http://localhost:3000/workflowui/api/setup'
 
   try {
     const response = await fetch(setupUrl, { method: 'POST' })