Four targeted fixes for user-reported movement/visual bugs:
1. Player entity disappearing: GpuWorldState now supports persistent
entities (MarkPersistent/DrainRescued). The player character survives
landblock unloads and gets re-injected into the streaming window at
the current center landblock.
2. Feet sinking into terrain: +0.15 Z bias in PlayerMovementController
keeps the character model above terrain z-fighting edge cases.
3. Camera after portal teleport: ChaseCamera.Update now called
immediately after teleport snap so the camera recenters on the new
position instead of lingering at the pre-teleport location.
4. Scenery on roads: SceneryGenerator now checks road status at the
final displaced position (not just the origin vertex), catching
objects that drift from non-road vertices onto road cells.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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