- Add `turn_stealth_domain` to gateway config for stealth TURN support
- Introduce `turn_discovery` in `sni-router` to auto-discover per-namespace routes
- Add database migration to enable stealth TURN per namespace
- Document ephemeral state API in `SERVERLESS.md`
- Add `FileRouteReloader` to watch and atomically update routes from disk
- Refactor `main` to support seamless configuration updates without restarts
- Ensure existing routes are preserved if a reload encounters an error