Document the Mac *arr/qBittorrent stack (VM placement, gluetun credential
gate, socat LaunchAgents, PBKDF2 qB seed) and log the day: dankserver
recovery + full quadlet cutover of the six media services, the frankbook
skip-propagation/PBKDF2 handler fix, the 7-service frankbook deploy, and
the jellyfin GPU-parity finding.
