The server now runs every lobby's sandbox and queued games as rooms, stepped at
the tick rate on one thread. Players send controls ahead of time, late ones repeat
their last, and everyone in a room gets back the controls it played, its events
and checksums. Games start from sandbox queues, players return when they leave,
and play-again moves them to a fresh room. Protocol version 3.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Sim holds one whole game (tick, snapshots, checksum) and talks to the screen only
through Cues, which the client's Scene plays and the server ignores. All drawing
moved to scene.cpp. Match takes this screen's wishes as request flags instead of
reading the menu, input and settings. The sim library builds without SDL and the
server links it, ready to run games itself.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>