feat(ssh): full homelab alias set on the Mac + separate interactive key

config/ssh_homelab now carries the curated alias set from ~/bin/CLAUDE.md
(pve nodes, machines, key CTs, switch, tailscale hosts). Interactive auth
uses a NEW key, id_ed25519_homelab, because the existing id_ed25519 is
rrsync-jailed on pve173 and sshd honours the first matching authorized_keys
line per key — one key can't be both a jail and a shell there.

- setup.sh generates id_ed25519_homelab (idempotent)
- backup.sh pins the jailed key: -o IdentitiesOnly=yes -i $HOME/.ssh/id_ed25519
- scripts/authorize-mac-key.sh (run on steel141) appends the pubkey on every
  LAN host via claude's aliases; wired into run.sh
- bedroom alias: seth -> root (matches steel141; was undocumented)

Verified from the Mac: 12 aliases land as the right user@host; the backup key
is refused a shell by rrsync (checked with id — rrsync whitelists true);
backup.sh still runs. Offline at push time: bedroom thinkcentre seth-pi
pinail openclaw2 — re-run authorize-mac-key.sh when they're up.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

scripts/run.sh

@@ -27,6 +27,7 @@ cleanup; trap - EXIT
 ssh -o BatchMode=yes mac 'test ! -e /etc/sudoers.d/mac-setup && echo "[ok] temp sudoers removed" || echo "[WARN] temp sudoers STILL PRESENT"'
 
 mkdir -p .backup/mac && rsync -a mac:.mac-setup-backup/ .backup/mac/
+scripts/authorize-mac-key.sh
 [[ ${1:-} == --no-tank ]] && exit 0
 PUB=$(ssh mac cat .ssh/id_ed25519.pub)
 ssh pve173 "PUB='$PUB' bash -s" < scripts/tank-side.sh