tweak(gameplay): less delay if players disconnect during level start

fix(gameplay): visual spectate issues after player leave

fix: stale state in identity packet (fixes spectating)

feat: basic support for late join

fix(QuickPlay): vote is ignored if stuck in lobby during gameplay

tweak: "PUBLIC" -> "PUBLIC_SERVER" env var

feat: env var overrides PUBLIC, NAME

fix: relay on wrong channel

readme: direct connect note, document motd setting

tweak: mark compatibility with 1.40.4

feat: MOTD via MpChat

fix(bssb): player platform type

fix: oops https

tweak(ServerVersion): announce with hash, use short hash everywhere

fix: unreliable packets were completely broken?? wtf