A host can make its game public (Y in the lobby, or network.public_game):
it then announces name, map, game type, players and join code every 10 s,
retained, on hcvr/1/g<network version>/<id> through the signalling
brokers, and clears it when it stops. On the system link list, X opens an
online games panel listing the public games heard lately (stale ones
dropped after 45 s) and a row to type a code; A joins by the game's code.
Announcements carry no addresses.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>