A second, LAN-only deploy alongside the CT 690 / chess.sethpc.xyz
instance. Runs on VDJ-RIG as a persistent systemd daemon, served on
port 80 and reachable at http://chess.local via an mDNS alias.
- blind-chess-local.service: server unit; binds port 80 as the
non-root blindchess user via CAP_NET_BIND_SERVICE.
- chess-mdns-alias{,.service}: publishes the chess.local mDNS name
with avahi-publish -a -R (-R skips the reverse PTR, which would
otherwise collide with the host's own <hostname>.local record).
- install-local.sh: idempotent root-side installer (Node 22 via
NodeSource, avahi-utils, blindchess user, /opt/blind-chess, units).
- CLAUDE.md: documents the local instance under Operations.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>