Turning on maintenance mode locked out every admin — including ones already
logged in — with no way back in from the browser. Two causes:
1. Backend (middleware/maintenance.js): the skipPaths allow-list pointed at
/api/admin/login and /api/admin/auth/login, but the real admin auth routes
live under /api/auth (POST /api/auth/admin/login, GET /api/auth/session).
So during maintenance both the login POST and the session check 503'd. The
503 on /auth/session made the frontend read every admin as logged-out, and
also tripped the axios interceptor that force-enables maintenance globally.
Fixed the allow-list to the actual endpoints.
2. Frontend (MaintenanceWrapper.tsx): the maintenance screen rendered over
every /admin/* route unless an admin session already existed — covering the
/admin/login page itself. A logged-out admin could never reach the form to
get a session (catch-22). /admin/login is now always allowed through.
With both: a logged-in admin keeps working (session check passes), and a
logged-out admin can reach /admin/login and sign back in, all while
maintenance mode correctly blocks customers.