ViroReact 2.57.2 - Mixed Reality on Meta Quest

This release brings Viro's AR component API to Meta Quest 3 / 3S, no new API to learn. The same ViroARScene you ship on phones now runs in passthrough mixed reality on Quest.

Highlights

• Mixed Reality scenes on Quest. Pass a ViroARScene to ViroXRSceneNavigator
  and it runs on phones (ARCore) and Quest (OpenXR). onAnchorFound,
  ViroARPlane, and ViroARPlaneSelector fire from the room's floors, walls,
  ceilings, and tables, with passthrough enabled automatically.

• Object detection on Quest. ViroObjectDetector now runs on Quest 3 / 3S,
  driven by the Meta Passthrough Camera API. v1 emits labels + normalized boxes.

• Passthrough styling. New setPassthroughStyle(viewTag, { opacity, edgeColor })
  tunes passthrough opacity and edge-highlight colour at runtime.

• Reliability fixes. Passthrough no longer renders a black background, and an
  initial passthroughEnabled prop is honored even when set before the renderer
  initializes.

Upgrade notes

• Permissions (Quest). The Expo plugin now declares
  horizonos.permission.USE_ANCHOR_API (room planes) and
  horizonos.permission.HEADSET_CAMERA (object-detection camera). Both are
  runtime-granted — request them in-app or adb shell pm grant .
• Room planes require Space Setup. Plane data comes from the Quest room model;
  run Space Setup on the headset first, or no plane anchors are produced.
• MR scenes: set hdrEnabled={false} on ViroXRSceneNavigator for now — the
  HDR post-process path forces an opaque composite that hides passthrough. (A fix
  to lift this restriction is planned.)
• Object detection on Quest is Horizon OS v74+ and emits labels + 2D boxes
  only (no worldPosition / screenBoundingBox yet).

See CHANGELOG.md for the full list of changes, and
docs/QUEST_SETUP.md for setup details.