chore: remove temporary auth debug endpoint after login fix

Co-authored-by: Cursor <cursoragent@cursor.com>

src/middleware.ts

@@ -63,7 +63,6 @@ export async function middleware(req: NextRequest) {
   const isPublic =
     path === '/login' ||
     path === '/api/health' ||
-    path === '/api/debug/session' ||
     path.startsWith('/api/webhooks/') ||
     path.startsWith('/api/cron/') ||
     path === '/_4v_attr.js' ||