## What this PR does

A clear description of the change and why it was made.

## Type of change

- [ ] Documentation fix (typo, broken link, clarification)
- [ ] Documentation addition / restructure
- [ ] Deployment change (compose, config, Caddyfile)
- [ ] New deployment type
- [ ] Other:

## Checklist

- [ ] Docs match the actual files in `docker-deployment-*/` and `app_config/`
- [ ] Variable tables in the README are in sync with the example config files
- [ ] Internal and external links resolve
- [ ] Any changed `docker-compose.yml` passes `docker compose config`
- [ ] No real secrets, passwords, channel keys, or MQTT credentials committed
- [ ] I have read [CONTRIBUTING.md](../CONTRIBUTING.md)

## Notes for reviewers

Anything specific reviewers should look at?