Vivecraft Eureka Camera Fix (VECF) 1.1.0-phase3
=================================================
Minecraft 1.20.1 / Forge 47.4.22

Experimental mounted model renderer fallback.

Default mounted presentation:
- mountedPlayerModelMode = VANILLA
- mountedHudMode = LEFT_HAND
- camera mode = MANUAL_OFFSET
- offsetY = 1.8

VANILLA mode leaves Vivecraft active for VR input and HUD, but suppresses only
Vivecraft's VRPlayerRenderer selection for the mounted local player. The normal
Minecraft PlayerRenderer path is then allowed to continue. Other later renderer
hooks are intentionally not cancelled.

ROOM_LOCAL is retained for comparison. HIDDEN is retained as rollback.
The mount/dismount camera direction snap is not addressed in this build.
