SSH notes for the homelab jump host.

All admin hosts are reachable through the jump box at 10.0.1.2
(`ssh reese@jump`). The `~/.ssh/config` aliases:

k3s — the kubernetes control plane node (10.0.1.10, user talos)
gitlab — the gitlab container host (10.0.1.14)
nuc — the low-power media box (10.0.1.20)

Keys: ed25519 per host, no passwords. The old RSA key was retired in
2025 and its line removed from authorized_keys on every host.

Forwarding X11 stays off everywhere; use `ssh -L` port forwards for the
occasional GUI tool instead.