health check
GET /api/health returns a small JSON status payload that the frontend uses to confirm the cross-repo link is alive.
waver backend
This repo serves the Waver API routes on port 4000. The frontend repo should point to http://127.0.0.1:4000/api.
health check
GET /api/health returns a small JSON status payload that the frontend uses to confirm the cross-repo link is alive.
cors
API routes allow the frontend origin from FRONTEND_ORIGIN, defaulting to http://127.0.0.1:3001.