sv_demoplaying is set before devmap, synced during G_RegisterCvars,
and updated every frame by G_UpdateCvars. No need for defensive
trap_Cvar_VariableIntegerValue calls which add unnecessary syscall
overhead on every invocation.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Previously all team changes were blocked during demo playback.
Now 'team spectator' (or 'team s') is allowed — it calls
StopFollowing to return to free camera. All other team changes
remain blocked.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Prevent spectators from joining a playing team during demo
playback, which would disrupt the playback state. Prints a
message to the client instead.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
