updates documentation for beszel

CLAUDE.md

@@ -19,6 +19,7 @@ Recovery steps are in `RUNBOOK.md`. Repo overview and workflows are in `README.m
 - **Secrets in .env files**: All secrets (DB passwords, API keys, tokens) live in `.env` files under each app's `docker/<app>/` directory on the server. These are gitignored (`**/.env` in root `.gitignore`). The `.env` files are included in the USB backup. If the backup is lost, all secrets can be recreated from Bitwarden. The `system/msmtprc` in the repo has its password REDACTED -- the real one is only on the server.
 - **ZFS parent dataset mountpoints**: Pools have parent datasets (e.g., `nextcloud`, `threeteras`) that create mountpoints like `/mnt/nextcloud`. These are empty and expected — do not delete them.
 - **msmtp**: Replaces sendmail for cron MAILTO and smartd email alerts. Configured via `/etc/msmtprc` (Fastmail SMTP). The symlink `/usr/sbin/sendmail -> /usr/bin/msmtp` is set up in recovery step 2.
+- **Beszel agent**: System monitoring agent that reports to the beszel hub on hantim (`beszel.hantim.net`). Uses host network, listens on port 45876. No nginx proxy — it's not a web app.
 - **hantim-server**: Sister repo with similar nginx/certbot patterns. Located at `~/dev/hantim-server`. Useful as reference for deploy patterns.
 
 ## Remotes

README.md

@@ -18,6 +18,7 @@ docker/            Docker app configs (compose files, nginx confs)
   jellyfin/        Media server
   garage/          S3-compatible storage
   minecraft/       MCSManager
+  beszel-agent/    System monitoring agent (reports to beszel.hantim.net)
 smb/               Samba share (ZFS mountpoint, not in git)
 system/            System config snapshots (smb.conf, sanoid.conf, firewalld, etc.)
 ```

RUNBOOK.md

@@ -197,7 +197,7 @@ Deploy each app (nginx is already running and will return 502 until they start):
 
 ```bash
 # Add any new apps that have been added since this was written
-for app in nextcloud gitea jellyfin garage minecraft; do
+for app in nextcloud gitea jellyfin garage minecraft beszel-agent; do
     cd /opt/argento/docker/$app
     docker compose pull
     docker compose build