Phase 4:
- Cloth: remote ghosts now wear this player's cloth garments (tee/pants).
The local player's rigid character.cloth_ropa items (CPU-sim deformed
root-local VB) are cloned per ghost and drawn with the REMOTE entity world
from the pose, so each ghost is draped in its own root frame. No mesh or
cloth data is transmitted; the shader already applies item.world to the
rigid cloth path (zero blend weights). Sim-inactive (skinned) garments and
garments not near the local body are skipped.
- Nameplates: display names ride the wire. JOIN carries a display name
(skate3_ghost_name cvar, default the OS user name); the relay stores it
per client and echoes {session_id, name} pairs in the HELLO roster
(RosterEntry). Clients re-JOIN every 5 s so the roster/names stay current
as members join and leave. A GhostNameplateOverlay (always registered,
draws only while enabled) projects each ghost's entity origin +1.75 m
through the published camera and draws a colored name label above it.
Uses skate3::native_scene::GetPublishedCamera (new thread-safe snapshot of
the published view-proj/cam) so the UI thread can project world points.
- GhostDialog gains a display-name field. Protocol version bumped to 3.
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