claudio-bot: decommission LXC 123, archive repos, migrate monitoring to Hermes

- Destroy LXC 123 (claudio-bot) — freed 8 GiB rootfs, 512 MiB RAM, 1 core
- Archive dtoro/claudio-bot and dtoro/claudio-monitor on Gitea (read-only)
- Stop claudio-monitor.timer on hubris, remove /opt/claudio-monitor
- Extend homelab-hardware-health skill with LXC resources, service health, apt/docker drift
- Create homelab-health-watchdog cron (15 min, Matrix alerts, actionable options)
- Wire Matrix (matrix:dtoro) as health alert delivery platform
- Update 13 files: inventory, containers/*, infrastructure/*, hosts/*, README, .sops.yaml
- Add deprecation plan at plans/2026-06-04_130000-deprecate-claudio-bot.md

infrastructure/ssh-access.md

@@ -131,7 +131,6 @@ are managed by `ssh/deploy-keys.sh`. SSH user is `root`.
 | 120 | mule-images | `192.168.8.136` | photo-management |
 | 121 | caddy | `192.168.8.175` | reverse-proxy |
 | 122 | arriman | `192.168.8.132` | arr-stack |
-| 123 | claudio-bot | `192.168.8.230` | matrix-agent |
 | 126 | plato | `192.168.8.190` | app |
 
 ### Workstations