Gate the Lobby-to-world transition on a new MatchSubPhase.Loading before
Hide: movement stays frozen and the Hide countdown does not start until
every connected client has spawned all match avatars and applied their
paintings.
- MatchManager: Loading phase; matchLoadTimeout tunable; Match_BeginLoad
broadcasts the respawned avatar NetworkObjectIds (+ generation tag),
Match_Ready collects per-client ACKs (host self-checks locally); barrier
coroutine in RunMatchPhases before Hide; disconnect/teardown cleanup.
- GameModeManager: freeze local player (movement/paint/tab) during Loading,
restored via ActiveMode.Enter() on transition to Hide (no camera jump).
- NetworkPlayerSetup: treat Loading like Hide in ComputeVisible so a
fast-loading client cannot reveal a hider early.
- MatchHud: "Loading" phase label.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>