- Add frpc/frpc.toml template for mapping the local Docker web entry on port 4002 to the public frps server.
- Add an optional Docker Compose frpc service behind the frpc profile, mounting the reusable frpc.toml configuration.
- Document how to enable the frpc profile, inspect frpc logs, and keep normal local startup unchanged.
- Clarify that public deployments should map only port 4002 and let Nginx Proxy Manager provide HTTPS for sstwbg.example.com instead of exposing 4443.
- Update Docker and deployment docs to match the reusable frpc workflow.
