arkit-spatial-sensing-workflowlisted

# ARKit Spatial Sensing Workflow ## Purpose Guide ARKit environment sensing while preserving the platform-specific session model, typed spatial data, tracking quality, authorization, privacy, and rendering/scanning handoffs. ## When To Use - Use for world tracking, planes, anchors, ray casting, scene depth, LiDAR reconstruction, meshes, environment understanding, maps, relocalization, and visionOS ARKit providers. - Recommend `camera-capture-depth-workflow` for camera controls, photo/video capture, calibrated camera depth, or synchronized camera outputs. - Recommend `arkit-face-body-tracking-workflow` for TrueDepth face geometry or body skeleton tracking. ## Single-Path Workflow 1. Classify the spatial task: - world tracking and tracking-state repair - plane, image, object, or geographic detection - ray casting, hit testing, feature points, or measurement - scene depth or smoothed scene depth - scene reconstruction, mesh geometry, or classification - environment texturing or probes - world-map persistence, sharing, or relocalization - visionOS authorization and provider lifecycle 2. Apply the Apple docs gate: - read current ARKit documentation for the selected platform and capability - state the documented behavior relied on - apply `../../shared/references/apple-spatial-data-privacy-contract.md` - check `supportsFrameSemantics`, `supportsSceneReconstruction`, configuration support, provider support, authorization, and device capabili