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

containers/103-paperless.md

@@ -24,7 +24,7 @@ Behind [Authentik forward-auth](124-authentik.md). API path `/api/*` bypasses fo
 - Documents at `/mnt/library/documents` (owner `www-data:www-data`, mode 750 — *not* on the `media` group, by design).
 
 ## Known issues
-- Disk usage was 86.9% at last claudio-monitor reading on 2026-04-21. Monitor or grow rootfs.
+- ~~Disk usage was 86.9% at last legacy monitor reading on 2026-04-21~~ — resolved by growing rootfs to 16 GiB on 2026-05-15.
 
 ## Related
 - [Authentik](124-authentik.md)