Migration Guide

The full SceneView migration guide lives in docs/docs/migration.md — that's the canonical source consumed by the website at https://sceneview.github.io/migration/.

It covers, in chronological order:

• 3.6.x → 4.0.0 — Rerun integration, top-level rename Scene → SceneView / ArScene → ARSceneView, MaterialLoader.createUnlitColorInstance(...), ARRecorder async API + recordFrame(session) stateless overload, Geospatial-anchor composables (TerrainAnchorNode, RooftopAnchorNode), the @MainThread-annotated loader sync overloads.
• 3.5.x → 3.6.0 — API simplification (rememberModelInstance lifecycle, loader-injection composables, post-processing module split).
• 2.x → 3.x — full Compose rewrite (Sceneform deprecation, ArSceneView → ARSceneView, TransformableNode → isEditable = true, PlacementNode → AnchorNode + HitResultNode, ViewRenderable → ViewNode).

Open a PR against docs/docs/migration.md rather than this file — this stub exists only so the GitHub root view surfaces a top-level pointer (audit #900, canonicalisation: kept docs/docs/migration.md, removed docs/docs/migration-v4.md which had been superseded by the v4 section of migration.md).