migrateSceneData
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migrateSceneData(
raw):SceneMigrationResult
Defined in: scene.ts:321
Upgrade a SceneData to the current format. Total + idempotent: already-current
data returns migrated: false; migrations are shape-driven so they no-op on
current scenes. Rejects data newer than this engine. Returns a deep copy, so
loading never mutates the caller’s object (snapshots can be reloaded).