Dedicated servers (halo --server, web admin, RCON, master server
listings, the server browser's DEDICATED tab; network version 39), each
client telling the host its build (distributed message 92), the
dedicated servers' chat filter, Gun Game's plasma weapons.
Conflicts: our join state enum for the VR menus is renamed
P2P_JOIN_STATE_* beside upstream's join progress (P2P_JOIN_*), and both
are kept in p2p.c; the entry sizes of message 92 and our 240 both;
config_write_file keeps our rename over the file and takes upstream's
dedicated server branch; hud_hires.c takes upstream's null renderer
check; build.yml and README.md stay ours. The new server-image workflow's
jobs are off (Mjolnir VR ships no server image).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>