people.* now routes / to people-frontend (nginx/React SPA).
Path prefixes /api/, /admin/, and /o/ are forwarded to people-backend
(Django/gunicorn), matching the app's URL structure.
Previously all people.* traffic hit people-backend directly, causing
Django to return 404 "Page not found at /" for the root path.
The [[routes.paths]] mechanism already existed in the proxy (used by
the auth route) — only a config update was needed.