import { parseNlaTracks, type NlaTrackIR } from "./nla";
import { parseGreasePencilData, type GreasePencilDataIR } from "./grease-pencil";
import { parseCompositorGraph, type CompositorGraphIR } from "./compositor";
import { parseSequencerTimeline, type SequencerTimelineIR } from "./sequencer";
import { parseTrackingMaskProject, type TrackingMaskProjectIR } from "./tracking-mask";
import { normalizeProjectAssetPath } from "./asset-path";
import { parseEditorWorkflow, type EditorWorkflowIR } from "./editor-workflow";
import { parseScriptSourceInventory, type ScriptSourceInventoryIR } from "./scripting-platform";
import { parsePhysicsSimulationManifest, type PhysicsSimulationManifestIR } from "./physics-simulation";
import { GEOMETRY_NODE_GRAPH_BUDGET, parseGeometryNodeGraph, type GeometryNodeGraphIR } from "./geometry-nodes";

export type SceneNodeType =
  | "EMPTY"
  | "MESH"
  | "CURVE"
  | "SURFACE"
  | "FONT"
  | "METABALL"
  | "LIGHT"
  | "CAMERA"
  | "SPEAKER"
  | "LIGHT_PROBE"
  | "LATTICE"
  | "ARMATURE"
  | "CURVES"
  | "POINT_CLOUD"
  | "VOLUME"
  | "GREASE_PENCIL"
  | "UNKNOWN";

export interface SceneTransformIR {
  translation: [number, number, number];
  rotationEuler: [number, number, number];
  scale: [number, number, number];
  rotationMode: number;
}

export interface SceneNodeIR {
  id: string;
  name: string;
  type: SceneNodeType;
  parentId: string | null;
  dataId: string | null;
  visible: boolean;
  selectable: boolean;
  localMatrix: number[];
  worldMatrix: number[];
  transform: SceneTransformIR;
  assetData?: AssetMetadataIR;
  constraints?: ConstraintIR[];
  drivers?: DriverIR[];
  lightgroup?: string | null;
}

export interface AssetMetadataIR {
  marked: true;
  author: string;
  description: string;
  copyright: string;
  license: string;
  catalogSimpleName: string;
  activeTag: number;
  preferredImportMethod: number;
  tags: string[];
}

export interface ConstraintIR {
  name: string;
  typeCode: number;
  type: string;
  enabled: boolean;
  influence: number;
  targetObjectId?: string | null;
}

export interface DriverVariableIR {
  name: string;
  type: number;
  targetCount: number;
  targets?: DriverTargetIR[];
}

export interface DriverTargetIR {
  idName: string;
  dataPath: string;
  boneTarget: string;
  transformType: number;
  rotationMode: number;
  flags: number;
  options: number;
  idType: number;
  contextProperty: number;
  fallbackValue: number;
}

export interface DriverIR {
  path: string;
  arrayIndex: number;
  editable: boolean;
  enabled: boolean;
  expression: string;
  type: string;
  typeCode: number;
  flags: number;
  influence: number;
  variables: DriverVariableIR[];
}

export interface ModifierIR {
  uuid: string;
  type: string;
  name: string;
  enabled: boolean;
  showViewport: boolean;
  showRender: boolean;
  showEditMode?: boolean;
  showOnCage?: boolean;
  parameters: Record<string, unknown>;
  dependsOn?: string[];
  evaluationStatus?: "EVALUATED" | "METADATA_ONLY" | "BLOCKED";
}

export interface SkinWeightsIR {
  boneNames: string[];
  indices: number[];
  weights: number[];
  bindMatrix: number[];
  armatureId?: string;
  jointIds?: string[];
}

export interface ArmatureBoneIR {
  id: string;
  name: string;
  parentId: string | null;
  head: [number, number, number];
  tail: [number, number, number];
  roll?: number;
  connected?: boolean;
  restMatrix: number[];
  poseMatrix?: number[];
  poseConstraints?: Array<{
    name: string;
    type: "COPY_LOCATION" | "COPY_ROTATION" | "COPY_SCALE" | "IK" | "TRACK_TO" | "UNKNOWN";
    targetObjectId?: string | null;
    targetBoneName?: string;
    influence: number;
    enabled: boolean;
  }>;
}

export interface ArmatureIR {
  id: string;
  name: string;
  objectId?: string;
  bones: ArmatureBoneIR[];
}

export interface ShapeKeyIR {
  name: string;
  positions: number[];
  relativeTo?: string | null;
  value?: number;
}

export interface VertexGroupIR {
  name: string;
  index: number;
}

export interface MeshAttributeIR {
  name: string;
  domain: "POINT" | "EDGE" | "FACE" | "CORNER";
  dataType: string;
}

export interface UVLayerIR {
  name: string;
  active: boolean;
  activeRender: boolean;
}

export interface MeshSummaryIR {
  id: string;
  name: string;
  vertexCount: number;
  edgeCount: number;
  faceCount: number;
  cornerCount: number;
  triangleCount?: number;
  geometryStatus: "summary-only" | "available" | "binary";
  geometryBufferId?: string;
  topology?: "triangles" | "lines" | "points";
  positions?: number[];
  indices?: number[];
  normals?: number[];
  triangleCornerIndices?: number[];
  uvs?: number[];
  colors?: number[];
  triangleMaterialIndices?: number[];
  triangleFaceIndices?: number[];
  edgeVertexIndices?: number[];
  tangents?: number[];
  splitNormals?: number[];
  seamEdges?: number[];
  sharpEdges?: number[];
  materialSlotIds?: string[];
  bounds?: { min: [number, number, number]; max: [number, number, number] };
  modifierStack?: ModifierIR[];
  skinWeights?: SkinWeightsIR;
  shapeKeys?: ShapeKeyIR[];
  vertexGroups?: VertexGroupIR[];
  attributes?: MeshAttributeIR[];
  uvLayers?: UVLayerIR[];
  activeUVMap?: string | null;
  sculptMask?: number[];
  faceSets?: number[];
  activeFaceSet?: number;
  sculptRevision?: number;
}

export interface MaterialNodeIR {
  id: string;
  type: "RGB" | "VALUE" | "MATH" | "PRINCIPLED" | "IMAGE_TEXTURE" | "NORMAL_MAP" | "OUTPUT" | "UNSUPPORTED";
  name: string;
  imageId?: string | null;
  defaultValue?: number[];
  properties?: { operation?: "ADD" | "SUBTRACT" | "MULTIPLY" | "DIVIDE" | "MINIMUM" | "MAXIMUM" };
}

export interface MaterialLinkIR {
  fromNodeId: string;
  fromSocket: string;
  toNodeId: string;
  toSocket: string;
}

export interface MaterialIR {
  id: string;
  name: string;
  baseColor: [number, number, number, number];
  roughness: number;
  metallic: number;
  emissionColor: [number, number, number, number];
  alpha: number;
  ior: number;
  specularIORLevel?: number;
  transmissionWeight?: number;
  coatWeight?: number;
  coatRoughness?: number;
  emissionStrength?: number;
  normalImageId?: string | null;
  imageIds?: string[];
  warnings?: string[];
  /** SHA-256 of the serialized bounded shader graph when a node tree was read. */
  shaderGraphHash?: string;
  nodes?: MaterialNodeIR[];
  links?: MaterialLinkIR[];
}

export interface CameraIR {
  id: string;
  name: string;
  projection: "PERSPECTIVE" | "ORTHOGRAPHIC" | "PANORAMIC" | "CUSTOM";
  lensMm: number;
  sensorWidthMm: number;
  sensorHeightMm: number;
  sensorFit: number;
  shift: [number, number];
  near: number;
  far: number;
  orthoScale: number;
  panoramaType?: number;
  fisheyeFov?: number;
  depthOfField?: {
    enabled: boolean;
    focusObjectId?: string | null;
    focusDistance: number;
    apertureFStop: number;
    apertureBlades: number;
    apertureRotation: number;
    apertureRatio: number;
  };
}

export interface LightIR {
  id: string;
  name: string;
  lightType: number;
  color: [number, number, number];
  energy: number;
  radius: number;
  spotAngle: number;
  spotBlend: number;
  areaShape: number;
  areaSize: number;
  areaSizeY: number;
  areaSizeZ?: number;
  clipStart?: number;
  sunAngle: number;
  diffuseFactor?: number;
  specularFactor?: number;
  transmissionFactor?: number;
  volumeFactor?: number;
  attenuationDistance?: number;
  shadowFilterRadius?: number;
  shadowMaximumResolution?: number;
  shadowJitterOverblur?: number;
  cascadeMaxDistance?: number;
  cascadeExponent?: number;
  cascadeFade?: number;
  cascadeCount?: number;
  exposure?: number;
  temperature?: number;
  useTemperature?: boolean;
  castsShadow?: boolean;
  areaSpread?: number;
}

export interface WorldIR {
  id: string;
  name: string;
  color: [number, number, number];
  exposure: number;
  environmentImageId?: string | null;
  environmentStrength?: number;
  environmentRotation?: number;
  ambientOcclusionDistance?: number;
  ambientOcclusionEnergy?: number;
  sunThreshold?: number;
  sunAngle?: number;
  sunShadowMaximumResolution?: number;
  sunShadowJitterOverblur?: number;
  sunShadowFilterRadius?: number;
  probeResolution?: number;
  useSunShadow?: boolean;
  useSunShadowJitter?: boolean;
  backgroundVisible?: boolean;
  lightgroup?: string | null;
  mist?: {
    enabled: boolean;
    type: "QUADRATIC" | "LINEAR" | "INVERSE_QUADRATIC";
    start: number;
    depth: number;
    intensity: number;
    height: number;
  };
}

export interface ImageIR {
  id: string;
  name: string;
  assetId: string;
  mimeType?: string;
  width?: number;
  height?: number;
  sha256?: string;
  colorSpace?: "SRGB" | "NON_COLOR" | "LINEAR";
  sourcePath?: string;
  packed?: boolean;
  packedByteLength?: number;
  sourceKind?: "FILE" | "SEQUENCE" | "MOVIE" | "GENERATED" | "VIEWER" | "TILED" | "UNKNOWN";
  assetStatus?: "PACKED" | "GENERATED" | "EXTERNAL" | "UDIM_EXTERNAL" | "LINKED_LIBRARY_REQUIRED" | "MISSING" | "CORRUPT";
  errorCode?: "PACKED_IMAGE_SIGNATURE_INVALID" | "LINKED_IMAGE_LIBRARY_REQUIRED";
  libraryLinked?: boolean;
  libraryPath?: string;
  tiles?: Array<{
    number: number;
    label: string;
    width: number;
    height: number;
    generatedType: number;
    generatedColor?: number[];
    sourcePath: string;
    assetId: string;
    mimeType: string;
    packed: boolean;
    packedByteLength?: number;
    validSignature?: boolean;
  }>;
}

export type NonMeshDataType = "CURVE" | "SURFACE" | "FONT" | "METABALL" | "POINT_CLOUD" | "CURVES" | "VOLUME" | "HAIR";

export type NonMeshAttributeDomain = "POINT" | "CURVE" | "INSTANCE";
export type NonMeshAttributeDataType = "BOOL" | "INT" | "FLOAT" | "FLOAT2" | "FLOAT3" | "BYTE_COLOR" | "FLOAT_COLOR";

export interface NonMeshAttributeIR {
  name: string;
  domain: NonMeshAttributeDomain;
  dataType: NonMeshAttributeDataType;
  components: 1 | 2 | 3 | 4;
}

export interface EvaluatedNonMeshGeometryIR {
  objectId: string;
  meshId: string;
  vertexCount: number;
  edgeCount?: number;
  triangleCount: number;
  status: "EVALUATED" | "BLOCKED";
  errorCode?: "NON_MESH_DATA_BUDGET_EXCEEDED";
  materialSlotIds?: string[];
  sourceElementIndices?: number[];
}

export interface VolumeGridMetadataIR {
  name: string;
  valueType: string;
  voxelCount: number;
  activeVoxelCount?: number;
  bounds?: { min: [number, number, number]; max: [number, number, number] };
}

export type NonMeshCurveSplineType = "POLY" | "BEZIER" | "NURBS";

export interface NonMeshFontPropertiesIR {
  alignment: "LEFT" | "CENTER" | "RIGHT" | "JUSTIFY" | "FLUSH";
  alignY: "TOP_BASELINE" | "TOP" | "CENTER" | "BOTTOM_BASELINE" | "BOTTOM";
  extrude: number;
  bevelDepth: number;
  bevelResolution: number;
  offset: number;
  spacing?: number;
  lineDistance?: number;
  wordSpace?: number;
  shear?: number;
  fontSize?: number;
  offsetX?: number;
  offsetY?: number;
}

export interface NonMeshFontCharacterIR {
  kern: number;
  materialIndex: number;
  styleFlags: number;
}

export interface NonMeshFontTextBoxIR {
  x: number;
  y: number;
  width: number;
  height: number;
}

export interface NonMeshFontLinksIR {
  regular: string;
  bold: string;
  italic: string;
  boldItalic: string;
}

export interface VFontResourceIR {
  id: string;
  name: string;
  sourcePath: string;
  builtin: boolean;
  packed: boolean;
  packedByteLength?: number;
  sha256?: string;
}

export interface SoundResourceIR {
  id: string;
  name: string;
  sourcePath: string;
  packed: boolean;
  packedByteLength?: number;
  volume: number;
  pitch: number;
  audioChannels: number;
  sampleRate: number;
}

export interface SpeakerResourceIR {
  id: string;
  name: string;
  soundId?: string;
  volumeMax: number;
  volumeMin: number;
  distanceMax: number;
  distanceReference: number;
  attenuation: number;
  coneAngleOuter: number;
  coneAngleInner: number;
  coneVolumeOuter: number;
  volume: number;
  pitch: number;
}

export interface TextLineIR {
  index: number;
  body: string;
  byteLength: number;
}

export interface TextResourceIR {
  id: string;
  name: string;
  source: string;
  sourceSha256: string;
  byteLength: number;
  lineCount: number;
  lines?: TextLineIR[];
  internal: boolean;
  sourcePath?: string;
  isDirty: boolean;
  useModule: boolean;
}

export interface TextureResourceIR {
  id: string;
  name: string;
  type: number;
  noiseScale: number;
  noiseDepth: number;
  intensity: number;
  contrast: number;
  saturation: number;
}

export interface WindowManagerResourceIR {
  id: string;
  name: string;
  presetName: string;
  windowCount: number;
  interfaceLocked: boolean;
}

export interface WorkspaceResourceIR { id: string; name: string; screenCount: number }

export interface NonMeshVolumePropertiesIR {
  displayDensity: number;
  interpolation: "NEAREST" | "LINEAR";
  stepSize: number;
  velocityGrid: string;
  velocityScale: number;
}

export interface NonMeshDataIR {
  id: string;
  name: string;
  type: NonMeshDataType;
  geometryStatus: "summary-only" | "available" | "binary" | "blocked";
  pointCount: number;
  splineCount: number;
  geometryBufferId?: string;
  controlPoints?: number[];
  radii?: number[];
  splineOffsets?: number[];
  splineDimensions?: Array<{ u: number; v: number; orderU: number; orderV: number }>;
  pointWeights?: number[];
  splineTypes?: NonMeshCurveSplineType[];
  cyclicU?: boolean[];
  cyclicV?: boolean[];
  handleTypes?: number[];
  handlePoints?: number[];
  handlePointIndices?: number[];
  attributes?: NonMeshAttributeIR[];
  attributeValues?: Array<NonMeshAttributeIR & { values: number[] }>;
  text?: string;
  fontProperties?: NonMeshFontPropertiesIR;
  fontCharacters?: NonMeshFontCharacterIR[];
  fontTextBoxes?: NonMeshFontTextBoxIR[];
  activeFontTextBox?: number;
  fontLinks?: NonMeshFontLinksIR;
  resolution?: number;
  elements?: Array<{ type: number; position: [number, number, number]; radius: number; scale: [number, number, number] }>;
  evaluatedGeometry?: EvaluatedNonMeshGeometryIR[];
  sourcePath?: string;
  resourceKind?: "OPENVDB";
  resourceByteLength?: number;
  volumeGrids?: VolumeGridMetadataIR[];
  volumeProperties?: NonMeshVolumePropertiesIR;
  errorCode?: "NON_MESH_DATA_UNSUPPORTED" | "NON_MESH_DATA_BUDGET_EXCEEDED" | "NON_MESH_RESOURCE_MISSING" | "NON_MESH_BINARY_INVALID" | "NON_MESH_RESOURCE_OUTSIDE_PROJECT" | "NON_MESH_VDB_BUDGET_EXCEEDED";
}

export interface AnimationIR {
  id: string;
  name: string;
  targetId: string;
  frameStart: number;
  frameEnd: number;
  slots?: Array<{ identifier: string; idtype: number; handle: number; flags: number }>;
  strips?: Array<{ name: string; type: "KEYFRAME"; frameStart: number; frameEnd: number; dataIndex: number }>;
  channels: Array<{ path: string; editable?: boolean; enabled?: boolean; selected?: boolean; group?: string; expanded?: boolean; keyframeSource?: "BEZIER" | "SAMPLED"; modifiers?: Array<{ name: string; type: string; typeCode: number; flags: number; expanded: boolean; influence: number; frameStart: number; frameEnd: number; blendIn: number; blendOut: number }>; interpolation?: "CONSTANT" | "LINEAR" | "BEZIER" | "MIXED"; keyframes: Array<{ frame: number; value: number[]; handleLeft?: [number, number]; handleRight?: [number, number]; interpolation?: "CONSTANT" | "LINEAR" | "BEZIER" }> }>;
}

export interface CollectionIR {
  id: string;
  name: string;
  objectIds: string[];
  childCollectionIds: string[];
}

export interface SceneIR {
  id: string;
  name: string;
  rootCollectionId?: string | null;
  cameraObjectId?: string | null;
  worldId?: string | null;
  renderEngine?: string;
  colorManagement?: {
    displayDevice: string;
    viewTransform: string;
    look: string;
    exposure: number;
    gamma: number;
    temperature?: number;
    tint?: number;
    whiteBalanceStatus?: "AVAILABLE" | "BLOCKED";
  };
  renderSettings?: {
    resolutionX: number;
    resolutionY: number;
    resolutionPercentage: number;
    frameStart: number;
    frameEnd: number;
    outputPath: string;
  };
  audioSettings?: {
    volume: number;
    speedOfSound: number;
    dopplerFactor: number;
    distanceModel: number;
    muted: boolean;
    sync: boolean;
  };
  unitSettings?: {
    system: number;
    scaleLength: number;
    rotationSystem: number;
    lengthUnit: number;
    massUnit: number;
    timeUnit: number;
    temperatureUnit: number;
  };
  timelineSettings?: {
    fps: number;
    fpsBase: number;
    frameStep: number;
    usePreviewRange: boolean;
    previewStart: number;
    previewEnd: number;
  };
  timelineMarkers?: Array<{ frame: number; name: string }>;
  pipelineSettings?: {
    useCompositor: boolean;
    useSequencer: boolean;
    noOverwrite: boolean;
    saveOutput: boolean;
    alphaPremultiplied: boolean;
  };
  viewLayers?: Array<{ name: string; useRender: boolean; useFreestyle: boolean; samples: number; passMask?: number; cryptomatteMask?: number; cryptomatteLevels?: number; alphaThreshold?: number; aovs?: Array<{ name: string; type: number }>; lightgroups?: string[] }>;
  borderSettings?: { enabled: boolean; minX: number; maxX: number; minY: number; maxY: number };
  simplifySettings?: { subsurfViewport: number; subsurfRender: number; particlesViewport: number; particlesRender: number; volumes: number };
  imageFormatSettings?: { fileType: string; colorMode: number; depth: number; quality: number; compression: number; exrCodec: number };
  motionBlurSettings?: { enabled: boolean; shutter: number; position: number };
  hairSettings?: { type: number; subdivisions: number };
  compositorSettings?: { device: number; precision: number; denoiseDevice: number; previewQuality: number; finalQuality: number };
  performanceSettings?: { fixedThreads: boolean; threads: number; persistentData: boolean; highQualityNormals: boolean };
  samplingSettings?: { pixelAspectX: number; pixelAspectY: number; filterSize: number; dither: number };
  multiviewSettings?: { enabled: boolean; viewsFormat: number; imageViewsFormat: number; stereoDisplayMode: number; interlaceSwap: boolean; sideBySideCrossed: boolean; squeezedFrame: boolean };
  stampSettings?: { stampMask: number; fontId: number; userText: string; foreground: number[]; background: number[] };
  lineSettings?: { mode: number; thickness: number };
  compositorGraph?: CompositorGraphIR;
  compositorStatus?: "AVAILABLE" | "BLOCKED";
  sequencerTimeline?: SequencerTimelineIR;
  sequencerStatus?: "AVAILABLE" | "BLOCKED";
}

export interface SceneRNADataBlockIR {
  type: string;
  name: string;
  libraryLinked: boolean;
  editable: boolean;
}

export interface SceneRNAPropertyIR {
  identifier: string;
  type: "BOOLEAN" | "INT" | "FLOAT" | "STRING" | "ENUM" | "COLLECTION";
  arrayLength: number;
  readonly: boolean;
  value?: boolean | number | string | null | Array<boolean | number | string | null>;
  collection?: { itemType?: string; nestedPath?: string };
}

export interface SceneSnapshotIR {
  schemaVersion: 1;
  revision: number;
  sceneId: string;
  source: {
    kind: "blend" | "mock";
    fileVersion?: number;
    fileFormatVersion?: number;
    pointerSize?: number;
    endianness?: "little" | "big";
    compression?: "none" | "gzip" | "zstd";
  };
  coordinateSystem: {
    upAxis: "Z";
    forwardAxis: "-Y";
    handedness: "RIGHT";
    unitSystem: number;
    unitScale: number;
  };
  nodes: SceneNodeIR[];
  meshes: MeshSummaryIR[];
  materials: MaterialIR[];
  cameras: CameraIR[];
  lights: LightIR[];
  worlds: WorldIR[];
  images: ImageIR[];
  brushes?: BrushIR[];
  lineStyles?: FreestyleLineStyleIR[];
  lattices?: LatticeIR[];
  nonMeshData?: NonMeshDataIR[];
  vfonts?: VFontResourceIR[];
  greasePencils?: GreasePencilDataIR[];
  trackingMasks?: TrackingMaskProjectIR;
  trackingMaskStatus?: "AVAILABLE" | "BLOCKED";
  libraryStatus?: "AVAILABLE" | "BLOCKED";
  editorWorkflow?: EditorWorkflowIR;
  editorWorkflowStatus?: "AVAILABLE" | "BLOCKED";
  scriptSources?: ScriptSourceInventoryIR;
  scriptSourceStatus?: "AVAILABLE" | "BLOCKED";
  renderRoutingStatus?: "AVAILABLE" | "BLOCKED" | "MISSING";
  renderRouting?: {
    schemaVersion: 1;
    receiptId: "workflow:render_capability_routing";
    source: { sha256: string; label?: string };
    settings: Record<string, unknown> & { sha256: string };
    build: { version: string; buildSha256: string };
    routes: Array<{ name: string; target: string; status: "READY" | "BLOCKED"; [key: string]: unknown }>;
    recovery: { cancellation: "OPEN_CANCELLED"; deviceLoss: "RELEASED"; [key: string]: unknown };
    [key: string]: unknown;
  };
  serverJobBindingStatus?: "AVAILABLE" | "BLOCKED" | "MISSING";
  serverJobBinding?: {
    schemaVersion: 1;
    receiptId: "workflow:server_job_result_binding";
    source: { sha256: string; [key: string]: unknown };
    settings: { settingsSha256: string; [key: string]: unknown };
    build: { version: string; buildSha256: string };
    request: { requestSha256: string; [key: string]: unknown };
    result: { status: "SUCCEEDED"; resultSha256: string; [key: string]: unknown };
    lifecycle: { duplicate: "REUSED"; stale: "BLOCKED"; cancel: "CANCELLED"; timeout: "TIMEOUT"; oom: "OOM"; publishedOnFailure: false; [key: string]: unknown };
    [key: string]: unknown;
  };
  scriptingPolicyStatus?: "AVAILABLE" | "BLOCKED" | "MISSING";
  scriptingPolicy?: {
    schemaVersion: 1;
    policyId: "workflow:scripting_default_deny_audit";
    defaults: { autorun: false; network: false; addonInstall: false; driverExpressions: false; module: false };
    scope: { dom: false; hostWorker: false; opfs: false; indexedDB: false; network: false };
    sandbox: {
      execution: "DISABLED";
      cancellation: "SCRIPT_SANDBOX_CANCELLED";
      dispose: "RELEASED";
      mainRevisionUnchanged: true;
      publishedResults: 0;
      temporaryBytes: 0;
    };
    audit: { decision: "DENY"; approvedKey: false; reason: "SCRIPT_SIGNATURE_INVALID" | "SCRIPT_SANDBOX_UNAVAILABLE"; [key: string]: unknown };
    boundaries: { secretAccess: "BLOCKED"; filesystemEscape: "BLOCKED"; network: "BLOCKED" };
    budget: { maxSourceBytes: number; maxScripts: number; maxAuditEntries: number };
    policyHash: string;
    [key: string]: unknown;
  };
  performanceFaultMatrixStatus?: "AVAILABLE" | "BLOCKED" | "MISSING";
  performanceFaultMatrix?: {
    schemaVersion: 1;
    receiptId: "workflow:performance_fault_recovery_matrix";
    thresholds: Array<{ id: string; limit: number; status: "PASS"; [key: string]: unknown }>;
    faults: Record<string, { status: "BLOCKED"; code: string; publishedResults: 0; [key: string]: unknown }>;
    recovery: { oldRevisionUsable: true; revisionBefore: 1; revisionAfter: 1; resourcesAfter: 0; cache: "QUARANTINED"; workerRestart: "RECOVERED"; [key: string]: unknown };
    budget: { maxGeometryTriangles: number; maxTextureBytes: number; maxMediaBytes: number; maxCacheBytes: number; [key: string]: unknown };
    matrixHash: string;
    [key: string]: unknown;
  };
  releaseCandidateStatus?: "AVAILABLE" | "BLOCKED" | "MISSING";
  releaseCandidate?: {
    schemaVersion: 1;
    receiptId: "workflow:offline_ci_sbom_and_rollback_release";
    releaseId: string;
    ci: { quick: { status: "READY"; reportSha256: string }; [key: string]: unknown };
    gates: { offlineReproducibility: { status: "READY" }; sbom: { status: "READY" }; rollback: { status: "READY" }; [key: string]: unknown };
    archives: { binary: { bytes: number; sha256: string }; source: { bytes: number; sha256: string }; [key: string]: unknown };
    sbom: { sha256: string; [key: string]: unknown };
    rollback: { runbookSha256: string; [key: string]: unknown };
    [key: string]: unknown;
  };
  gapInventoryStatus?: "AVAILABLE" | "BLOCKED" | "MISSING";
  gapInventory?: {
    schemaVersion: 1;
    receiptId: "workflow:cluster_full_blender_gap_inventory";
    runtime: "BLENDER_5_2_INVENTORY";
    inventorySource: { path: string; sha256: string; entryCount: 6900; [key: string]: unknown };
    classificationPolicy: { featureParityRequires: string[]; negativeOnlyClasses: string[]; unprovenClass: "METADATA_ONLY"; parityLevel: "L0"; [key: string]: unknown };
    clusters: Array<{
      capabilityId: string;
      family: string;
      layer: string;
      entryCount: number;
      legacyCompleted: number;
      legacyPending: number;
      legacyActive: number;
      targetParityLevel: string;
      currentParityLevel: "L0";
      completionClass: "METADATA_ONLY";
      evidenceStatus: "NOT_RUN";
      webStatus: "GAP";
      riskScore: number;
      riskBand: string;
      representativeIds: string[];
      blockedReasons: string[];
      [key: string]: unknown;
    }>;
    summary: { inventoryEntries: 6900; clusterCount: 15; unknownEntries: 0; webGapEntries: 6900; currentParityClaims: 0; currentParityLevel: "L0"; [key: string]: unknown };
    riskRanking: string[];
    nextTask: "WBV2-P7-002";
    [key: string]: unknown;
  };
  atomicGapQueueStatus?: "AVAILABLE" | "BLOCKED" | "MISSING";
  atomicGapQueue?: {
    schemaVersion: 1;
    receiptId: "workflow:generate_atomic_family_gap_queue";
    runtime: "BLENDER_5_2_INVENTORY";
    parent: { task: "WBV2-P7-001"; manifestPath: string; manifestSha256: string; receiptPath: string; receiptSha256: string; [key: string]: unknown };
    queue: { activeTaskId: string; activeCount: 1; plannedCount: 44; ordering: string; behaviors: string[]; implementationClasses: string[]; [key: string]: unknown };
    tasks: Array<{ id: string; parityId: string; capabilityId: string; family: string; behavior: string; implementationClass: "LOCAL_BOUNDED"; parentTask: "WBV2-P7-001"; parentReceiptSha256: string; state: "active" | "pending"; ready: boolean; [key: string]: unknown }>;
    nextTask: "WBV2-P7-003";
    [key: string]: unknown;
  };
  parityReleaseGateStatus?: "AVAILABLE" | "BLOCKED" | "MISSING";
  parityReleaseGate?: {
    schemaVersion: 1;
    receiptId: "workflow:full_parity_candidate_release_gate";
    runtime: "BLENDER_DESKTOP_WASM_MAIN";
    inputs: Record<string, { path: string; sha256: string; [key: string]: unknown }>;
    parityClosure: { status: "BLOCKED"; inventoryEntries: 6900; clusterCount: 15; atomicTaskCount: 45; currentParityLevel: "L0"; featureParityClaims: 0; reasonCodes: string[]; [key: string]: unknown };
    evidenceHealth: { status: "BLOCKED"; historicalEvidencePreserved: true; m12ProvenanceState: "BLOCKED_SOURCE_LOST"; m12Entries: number; reasonCodes: string[]; [key: string]: unknown };
    recoveryHealth: { status: "READY"; quickCi: "READY"; inventorySaveReopen: "EXACT"; queueSaveReopen: "EXACT"; malformedBlend: "REJECTED_WITHOUT_MAIN_MUTATION"; [key: string]: unknown };
    releaseDecision: { status: "BLOCKED"; reasonCodes: string[]; nextTask: null; [key: string]: unknown };
    [key: string]: unknown;
  };
  physicsSimulation?: PhysicsSimulationManifestIR;
  particleSettings?: ParticleSettingsIR[];
  sounds?: SoundResourceIR[];
  speakers?: SpeakerResourceIR[];
  texts?: TextResourceIR[];
  textures?: TextureResourceIR[];
  windowManager?: WindowManagerResourceIR;
  workspaces?: WorkspaceResourceIR[];
  geometryNodeGraphs?: GeometryNodeGraphIR[];
  libraries?: Array<{
    id: string;
    name: string;
    sourcePath: string;
    packed: boolean;
    packedByteLength?: number;
    status: "PACKED" | "EXTERNAL_REQUIRED";
    errorCode?: "LINKED_LIBRARY_RESOURCE_REQUIRED";
    dependencyIds: string[];
    readOnly: true;
  }>;
  animations: AnimationIR[];
  nlaTracks?: NlaTrackIR[];
  armatures?: ArmatureIR[];
  collections: CollectionIR[];
  scenes: SceneIR[];
  activeObjectId: string | null;
  frame: { current: number; start: number; end: number };
}

export interface ParticleSettingsIR {
  id: string;
  name: string;
  type: number;
  from: number;
  distribution: number;
  physicsType: number;
  totalParticles: number;
  start: number;
  end: number;
  lifetime: number;
  size: number;
  drawSize: number;
}

export interface BrushIR {
  id: string;
  name: string;
  size: number;
  alpha: number;
  hardness: number;
  spacing: number;
  jitter: number;
  sculptTool: number;
}

export interface FreestyleLineStyleIR {
  id: string;
  name: string;
  color: [number, number, number];
  alpha: number;
  thickness: number;
  chaining: number;
  caps: number;
  dashed: boolean;
  modifierCounts: { color: number; alpha: number; thickness: number; geometry: number };
}

export type LatticeInterpolationIR = "KEY_LINEAR" | "KEY_CARDINAL" | "KEY_BSPLINE" | "KEY_CATMULL_ROM";

export interface LatticePointIR {
  coDeform: [number, number, number];
  weight: number;
  selected: boolean;
}

export interface LatticeIR {
  id: string;
  name: string;
  dimensions: [number, number, number];
  pointCount: number;
  interpolation: [LatticeInterpolationIR, LatticeInterpolationIR, LatticeInterpolationIR];
  useOutside: boolean;
  activePoint: number;
  vertexGroup: string;
  status: "AVAILABLE" | "BLOCKED";
  points?: LatticePointIR[];
  errorCode?: "LATTICE_DIMENSIONS_INVALID" | "LATTICE_POINTS_UNREADABLE";
}

function isRecord(value: unknown): value is Record<string, unknown> {
  return typeof value === "object" && value !== null && !Array.isArray(value);
}

function requireArray(value: unknown, field: string): unknown[] {
  if (!Array.isArray(value)) throw new Error(`SceneIR.${field} must be an array`);
  return value;
}

function requireString(value: unknown, field: string): string {
  if (typeof value !== "string") throw new Error(`SceneIR.${field} must be a string`);
  return value;
}

function requireNumber(value: unknown, field: string): number {
  if (typeof value !== "number" || !Number.isFinite(value)) {
    throw new Error(`SceneIR.${field} must be a finite number`);
  }
  return value;
}

function requireBoolean(value: unknown, field: string): boolean {
  if (typeof value !== "boolean") throw new Error(`SceneIR.${field} must be a boolean`);
  return value;
}

function requireTuple(value: unknown, length: number, field: string): void {
  if (!Array.isArray(value) || value.length !== length || value.some((item) => typeof item !== "number" || !Number.isFinite(item))) {
    throw new Error(`SceneIR.${field} must contain ${length} finite numbers`);
  }
}

export function parseSceneSnapshotIR(value: unknown): SceneSnapshotIR {
  if (!isRecord(value)) throw new Error("SceneIR snapshot must be an object");
  if (value.schemaVersion !== 1) throw new Error(`Unsupported SceneIR schema: ${String(value.schemaVersion)}`);
  requireNumber(value.revision, "revision");
  requireString(value.sceneId, "sceneId");
  const nodes = requireArray(value.nodes, "nodes");
  const meshes = requireArray(value.meshes, "meshes");
  requireArray(value.materials, "materials");
  requireArray(value.cameras, "cameras");
  requireArray(value.lights, "lights");
  requireArray(value.worlds, "worlds");
  requireArray(value.images, "images");
  if (value.brushes !== undefined) {
    const brushes = requireArray(value.brushes, "brushes");
    for (const [index, brush] of brushes.entries()) {
      if (!isRecord(brush)) throw new Error(`SceneIR.brushes[${index}] must be an object`);
      requireString(brush.id, `brushes[${index}].id`);
      requireString(brush.name, `brushes[${index}].name`);
      const size = requireNumber(brush.size, `brushes[${index}].size`);
      const alpha = requireNumber(brush.alpha, `brushes[${index}].alpha`);
      const hardness = requireNumber(brush.hardness, `brushes[${index}].hardness`);
      const spacing = requireNumber(brush.spacing, `brushes[${index}].spacing`);
      const jitter = requireNumber(brush.jitter, `brushes[${index}].jitter`);
      const sculptTool = requireNumber(brush.sculptTool, `brushes[${index}].sculptTool`);
      if (!Number.isSafeInteger(size) || size < 0 || size > 100000 || alpha < 0 || alpha > 1 || hardness < 0 || hardness > 1 || !Number.isSafeInteger(spacing) || spacing < 1 || spacing > 1000 || jitter < 0 || jitter > 1 || !Number.isSafeInteger(sculptTool) || sculptTool < 0) {
        throw new Error(`SceneIR.brushes[${index}] is outside the bounded brush contract`);
      }
    }
  }
  if (value.lineStyles !== undefined) {
    const lineStyles = requireArray(value.lineStyles, "lineStyles");
    for (const [index, lineStyle] of lineStyles.entries()) {
      if (!isRecord(lineStyle)) throw new Error(`SceneIR.lineStyles[${index}] must be an object`);
      requireString(lineStyle.id, `lineStyles[${index}].id`);
      requireString(lineStyle.name, `lineStyles[${index}].name`);
      requireTuple(lineStyle.color, 3, `lineStyles[${index}].color`);
      const alpha = requireNumber(lineStyle.alpha, `lineStyles[${index}].alpha`);
      const thickness = requireNumber(lineStyle.thickness, `lineStyles[${index}].thickness`);
      requireNumber(lineStyle.chaining, `lineStyles[${index}].chaining`);
      requireNumber(lineStyle.caps, `lineStyles[${index}].caps`);
      requireBoolean(lineStyle.dashed, `lineStyles[${index}].dashed`);
      if (!isRecord(lineStyle.modifierCounts)) throw new Error(`SceneIR.lineStyles[${index}].modifierCounts must be an object`);
      for (const field of ["color", "alpha", "thickness", "geometry"] as const) {
        const count = requireNumber(lineStyle.modifierCounts[field], `lineStyles[${index}].modifierCounts.${field}`);
        if (!Number.isSafeInteger(count) || count < 0 || count > 1024) throw new Error(`SceneIR.lineStyles[${index}].modifierCounts.${field} is outside budget`);
      }
      if (alpha < 0 || alpha > 1 || thickness < 0 || thickness > 10000) throw new Error(`SceneIR.lineStyles[${index}] is outside bounds`);
    }
  }
  if (value.lattices !== undefined) {
    const lattices = requireArray(value.lattices, "lattices");
    if (lattices.length > 4096) throw new Error("SceneIR.lattices exceeds the data-block budget");
    const ids = new Set<string>();
    for (const [index, lattice] of lattices.entries()) {
      if (!isRecord(lattice)) throw new Error(`SceneIR.lattices[${index}] must be an object`);
      const id = requireString(lattice.id, `lattices[${index}].id`);
      if (!id.startsWith("lattice:") || ids.has(id)) throw new Error(`SceneIR.lattices[${index}].id is invalid`);
      ids.add(id);
      requireString(lattice.name, `lattices[${index}].name`);
      if (!Array.isArray(lattice.dimensions) || lattice.dimensions.length !== 3 || lattice.dimensions.some((item) => !Number.isSafeInteger(item) || item < 1 || item > 64)) throw new Error(`SceneIR.lattices[${index}].dimensions is invalid`);
      const pointCount = requireNumber(lattice.pointCount, `lattices[${index}].pointCount`);
      const expectedCount = (lattice.dimensions as number[]).reduce((product, item) => product * item, 1);
      if (!Number.isSafeInteger(pointCount) || pointCount !== expectedCount || pointCount > 64 * 64 * 64) throw new Error(`SceneIR.lattices[${index}].pointCount is invalid`);
      const interpolation = ["KEY_LINEAR", "KEY_CARDINAL", "KEY_BSPLINE", "KEY_CATMULL_ROM"];
      if (!Array.isArray(lattice.interpolation) || lattice.interpolation.length !== 3 || lattice.interpolation.some((item) => !interpolation.includes(item as string))) throw new Error(`SceneIR.lattices[${index}].interpolation is invalid`);
      requireBoolean(lattice.useOutside, `lattices[${index}].useOutside`);
      const activePoint = requireNumber(lattice.activePoint, `lattices[${index}].activePoint`);
      if (!Number.isSafeInteger(activePoint) || activePoint < -1 || activePoint >= pointCount) throw new Error(`SceneIR.lattices[${index}].activePoint is invalid`);
      requireString(lattice.vertexGroup, `lattices[${index}].vertexGroup`);
      if (lattice.status !== "AVAILABLE" && lattice.status !== "BLOCKED") throw new Error(`SceneIR.lattices[${index}].status is invalid`);
      if (lattice.status === "AVAILABLE") {
        if (!Array.isArray(lattice.points) || lattice.points.length !== pointCount) throw new Error(`SceneIR.lattices[${index}].points is incomplete`);
        for (const [pointIndex, point] of lattice.points.entries()) {
          if (!isRecord(point)) throw new Error(`SceneIR.lattices[${index}].points[${pointIndex}] is invalid`);
          requireTuple(point.coDeform, 3, `lattices[${index}].points[${pointIndex}].coDeform`);
          const weight = requireNumber(point.weight, `lattices[${index}].points[${pointIndex}].weight`);
          if (weight < 0.01 || weight > 100) throw new Error(`SceneIR.lattices[${index}].points[${pointIndex}].weight is invalid`);
          requireBoolean(point.selected, `lattices[${index}].points[${pointIndex}].selected`);
        }
        if (lattice.errorCode !== undefined) throw new Error(`SceneIR.lattices[${index}] available data cannot contain errorCode`);
      }
      else if (!lattice.errorCode || lattice.points !== undefined) {
        throw new Error(`SceneIR.lattices[${index}] blocked data is incomplete`);
      }
    }
  }
  if (value.nonMeshData !== undefined) requireArray(value.nonMeshData, "nonMeshData");
  if (value.particleSettings !== undefined) {
    const settings = requireArray(value.particleSettings, "particleSettings");
    if (settings.length > 4096) throw new Error("SceneIR.particleSettings exceeds the data-block budget");
    const ids = new Set<string>();
    for (const [index, setting] of settings.entries()) {
      if (!isRecord(setting)) throw new Error(`SceneIR.particleSettings[${index}] must be an object`);
      const id = requireString(setting.id, `particleSettings[${index}].id`);
      if (!id.startsWith("particle-settings:") || ids.has(id)) throw new Error(`SceneIR.particleSettings[${index}].id is invalid`);
      ids.add(id);
      requireString(setting.name, `particleSettings[${index}].name`);
      for (const field of ["type", "from", "distribution", "physicsType", "totalParticles"] as const) {
        const number = requireNumber(setting[field], `particleSettings[${index}].${field}`);
        if (!Number.isSafeInteger(number) || number < 0) throw new Error(`SceneIR.particleSettings[${index}].${field} is invalid`);
      }
      for (const field of ["start", "end", "lifetime", "size", "drawSize"] as const) {
        const number = requireNumber(setting[field], `particleSettings[${index}].${field}`);
        if (number < 0 || number > 1_000_000) throw new Error(`SceneIR.particleSettings[${index}].${field} is invalid`);
      }
    }
  }
  if (value.sounds !== undefined) {
    const sounds = requireArray(value.sounds, "sounds");
    if (sounds.length > 4096) throw new Error("SceneIR.sounds exceeds the data-block budget");
    const ids = new Set<string>();
    for (const [index, sound] of sounds.entries()) {
      if (!isRecord(sound)) throw new Error(`SceneIR.sounds[${index}] must be an object`);
      const id = requireString(sound.id, `sounds[${index}].id`);
      if (!id.startsWith("sound:") || ids.has(id)) throw new Error(`SceneIR.sounds[${index}].id is invalid`);
      ids.add(id);
      requireString(sound.name, `sounds[${index}].name`);
      requireString(sound.sourcePath, `sounds[${index}].sourcePath`);
      requireBoolean(sound.packed, `sounds[${index}].packed`);
      for (const field of ["volume", "pitch"] as const) {
        const number = requireNumber(sound[field], `sounds[${index}].${field}`);
        if (number < 0 || number > 1000) throw new Error(`SceneIR.sounds[${index}].${field} is outside bounds`);
      }
      for (const field of ["audioChannels", "sampleRate"] as const) {
        const number = requireNumber(sound[field], `sounds[${index}].${field}`);
        if (!Number.isSafeInteger(number) || number < 0 || number > 1_000_000) throw new Error(`SceneIR.sounds[${index}].${field} is invalid`);
      }
      if (sound.packedByteLength !== undefined && (!Number.isSafeInteger(sound.packedByteLength) || (sound.packedByteLength as number) < 0)) throw new Error(`SceneIR.sounds[${index}].packedByteLength is invalid`);
      if (sound.packed && sound.packedByteLength === undefined) throw new Error(`SceneIR.sounds[${index}] packed identity is incomplete`);
    }
  }
  if (value.speakers !== undefined) {
    const speakers = requireArray(value.speakers, "speakers");
    if (speakers.length > 4096) throw new Error("SceneIR.speakers exceeds the data-block budget");
    const ids = new Set<string>();
    for (const [index, speaker] of speakers.entries()) {
      if (!isRecord(speaker)) throw new Error(`SceneIR.speakers[${index}] must be an object`);
      const id = requireString(speaker.id, `speakers[${index}].id`);
      if (!id.startsWith("speaker:") || ids.has(id)) throw new Error(`SceneIR.speakers[${index}].id is invalid`);
      ids.add(id);
      requireString(speaker.name, `speakers[${index}].name`);
      if (speaker.soundId !== undefined && (!Array.isArray(value.sounds) || typeof speaker.soundId !== "string" || !speaker.soundId.startsWith("sound:"))) {
        throw new Error(`SceneIR.speakers[${index}].soundId is invalid`);
      }
      for (const field of ["volumeMax", "volumeMin", "distanceMax", "distanceReference", "attenuation"] as const) {
        const number = requireNumber(speaker[field], `speakers[${index}].${field}`);
        if (number < 0 || number > 1_000_000_000) throw new Error(`SceneIR.speakers[${index}].${field} is outside bounds`);
      }
      for (const field of ["coneAngleOuter", "coneAngleInner"] as const) {
        const number = requireNumber(speaker[field], `speakers[${index}].${field}`);
        if (number < 0 || number > 360) throw new Error(`SceneIR.speakers[${index}].${field} is outside bounds`);
      }
      const coneVolumeOuter = requireNumber(speaker.coneVolumeOuter, `speakers[${index}].coneVolumeOuter`);
      if (coneVolumeOuter < 0 || coneVolumeOuter > 1) throw new Error(`SceneIR.speakers[${index}].coneVolumeOuter is outside bounds`);
      for (const field of ["volume", "pitch"] as const) {
        const number = requireNumber(speaker[field], `speakers[${index}].${field}`);
        if (number < 0 || number > 1000) throw new Error(`SceneIR.speakers[${index}].${field} is outside bounds`);
      }
    }
  }
  if (value.texts !== undefined) {
    const texts = requireArray(value.texts, "texts");
    if (texts.length > 4096) throw new Error("SceneIR.texts exceeds the data-block budget");
    const ids = new Set<string>();
    for (const [index, text] of texts.entries()) {
      if (!isRecord(text)) throw new Error(`SceneIR.texts[${index}] must be an object`);
      const id = requireString(text.id, `texts[${index}].id`);
      if (!id.startsWith("text:") || ids.has(id)) throw new Error(`SceneIR.texts[${index}].id is invalid`);
      ids.add(id);
      requireString(text.name, `texts[${index}].name`);
      const source = requireString(text.source, `texts[${index}].source`);
      const sourceSha256 = requireString(text.sourceSha256, `texts[${index}].sourceSha256`);
      if (!/^[a-f0-9]{64}$/.test(sourceSha256)) throw new Error(`SceneIR.texts[${index}].sourceSha256 is invalid`);
      const byteLength = requireNumber(text.byteLength, `texts[${index}].byteLength`);
      const lineCount = requireNumber(text.lineCount, `texts[${index}].lineCount`);
      if (!Number.isSafeInteger(byteLength) || byteLength !== new TextEncoder().encode(source).byteLength || byteLength > 1_048_576) throw new Error(`SceneIR.texts[${index}].byteLength is invalid`);
      if (!Number.isSafeInteger(lineCount) || lineCount < 1 || lineCount > 65_536) throw new Error(`SceneIR.texts[${index}].lineCount is invalid`);
      if (text.lines !== undefined) {
        if (!Array.isArray(text.lines) || text.lines.length !== lineCount) throw new Error(`SceneIR.texts[${index}].lines is invalid`);
        text.lines.forEach((line, lineIndex) => {
          if (!isRecord(line)) throw new Error(`SceneIR.texts[${index}].lines[${lineIndex}] must be an object`);
          if (line.index !== lineIndex) throw new Error(`SceneIR.texts[${index}].lines[${lineIndex}].index is invalid`);
          const body = requireString(line.body, `texts[${index}].lines[${lineIndex}].body`);
          const lineByteLength = requireNumber(line.byteLength, `texts[${index}].lines[${lineIndex}].byteLength`);
          if (!Number.isSafeInteger(lineByteLength) || lineByteLength !== new TextEncoder().encode(body).byteLength) throw new Error(`SceneIR.texts[${index}].lines[${lineIndex}].byteLength is invalid`);
        });
      }
      requireBoolean(text.internal, `texts[${index}].internal`);
      if (text.sourcePath !== undefined) requireString(text.sourcePath, `texts[${index}].sourcePath`);
      requireBoolean(text.isDirty, `texts[${index}].isDirty`);
      requireBoolean(text.useModule, `texts[${index}].useModule`);
    }
  }
  if (value.textures !== undefined) {
    const textures = requireArray(value.textures, "textures");
    if (textures.length > 4096) throw new Error("SceneIR.textures exceeds the data-block budget");
    const ids = new Set<string>();
    for (const [index, texture] of textures.entries()) {
      if (!isRecord(texture)) throw new Error(`SceneIR.textures[${index}] must be an object`);
      const id = requireString(texture.id, `textures[${index}].id`);
      if (!id.startsWith("texture:") || ids.has(id)) throw new Error(`SceneIR.textures[${index}].id is invalid`);
      ids.add(id);
      requireString(texture.name, `textures[${index}].name`);
      const type = requireNumber(texture.type, `textures[${index}].type`);
      const noiseDepth = requireNumber(texture.noiseDepth, `textures[${index}].noiseDepth`);
      if (!Number.isSafeInteger(type) || type < 0 || !Number.isSafeInteger(noiseDepth) || noiseDepth < 0 || noiseDepth > 30) throw new Error(`SceneIR.textures[${index}] integer fields are invalid`);
      for (const field of ["noiseScale", "intensity", "contrast", "saturation"] as const) {
        const number = requireNumber(texture[field], `textures[${index}].${field}`);
        if (number < 0 || number > 1000) throw new Error(`SceneIR.textures[${index}].${field} is outside bounds`);
      }
    }
  }
  if (value.windowManager !== undefined) {
    if (!isRecord(value.windowManager)) throw new Error("SceneIR.windowManager must be an object");
    const manager = value.windowManager;
    const id = requireString(manager.id, "windowManager.id");
    if (id !== "window-manager:WinMan") throw new Error("SceneIR.windowManager.id is invalid");
    requireString(manager.name, "windowManager.name");
    requireString(manager.presetName, "windowManager.presetName");
    const windowCount = requireNumber(manager.windowCount, "windowManager.windowCount");
    if (!Number.isSafeInteger(windowCount) || windowCount < 0 || windowCount > 1024) throw new Error("SceneIR.windowManager.windowCount is invalid");
    requireBoolean(manager.interfaceLocked, "windowManager.interfaceLocked");
  }
  if (value.workspaces !== undefined) {
    const workspaces = requireArray(value.workspaces, "workspaces");
    const ids = new Set<string>();
    for (const [index, workspace] of workspaces.entries()) {
      if (!isRecord(workspace)) throw new Error(`SceneIR.workspaces[${index}] must be an object`);
      const id = requireString(workspace.id, `workspaces[${index}].id`);
      if (!id.startsWith("workspace:") || ids.has(id)) throw new Error(`SceneIR.workspaces[${index}].id is invalid`); ids.add(id);
      requireString(workspace.name, `workspaces[${index}].name`); const count = requireNumber(workspace.screenCount, `workspaces[${index}].screenCount`);
      if (!Number.isSafeInteger(count) || count < 0 || count > 64) throw new Error(`SceneIR.workspaces[${index}].screenCount is invalid`);
    }
  }
  if (value.greasePencils !== undefined) requireArray(value.greasePencils, "greasePencils");
  if (value.libraries !== undefined) requireArray(value.libraries, "libraries");
  requireArray(value.animations, "animations");
  if (value.armatures !== undefined) requireArray(value.armatures, "armatures");
  requireArray(value.collections, "collections");
  requireArray(value.scenes, "scenes");
  if (!isRecord(value.source)) throw new Error("SceneIR.source must be an object");
  if (!isRecord(value.coordinateSystem)) throw new Error("SceneIR.coordinateSystem must be an object");
  if (!isRecord(value.frame)) throw new Error("SceneIR.frame must be an object");
  if (value.source.kind !== "blend" && value.source.kind !== "mock") throw new Error("SceneIR.source.kind is invalid");
  if (value.coordinateSystem.upAxis !== "Z" || value.coordinateSystem.forwardAxis !== "-Y" || value.coordinateSystem.handedness !== "RIGHT") {
    throw new Error("SceneIR.coordinateSystem is unsupported");
  }
  requireNumber(value.coordinateSystem.unitSystem, "coordinateSystem.unitSystem");
  requireNumber(value.coordinateSystem.unitScale, "coordinateSystem.unitScale");
  requireNumber(value.frame.current, "frame.current");
  requireNumber(value.frame.start, "frame.start");
  requireNumber(value.frame.end, "frame.end");
  for (const [index, node] of nodes.entries()) {
    if (!isRecord(node)) throw new Error(`SceneIR.nodes[${index}] must be an object`);
    requireString(node.id, `nodes[${index}].id`);
    requireString(node.name, `nodes[${index}].name`);
    requireBoolean(node.visible, `nodes[${index}].visible`);
    requireBoolean(node.selectable, `nodes[${index}].selectable`);
    if (!Array.isArray(node.localMatrix) || node.localMatrix.length !== 16) {
      throw new Error(`SceneIR.nodes[${index}].localMatrix must contain 16 numbers`);
    }
    requireTuple(node.localMatrix, 16, `nodes[${index}].localMatrix`);
    requireTuple(node.worldMatrix, 16, `nodes[${index}].worldMatrix`);
    if (!isRecord(node.transform)) throw new Error(`SceneIR.nodes[${index}].transform must be an object`);
    requireTuple(node.transform.translation, 3, `nodes[${index}].transform.translation`);
    requireTuple(node.transform.rotationEuler, 3, `nodes[${index}].transform.rotationEuler`);
    requireTuple(node.transform.scale, 3, `nodes[${index}].transform.scale`);
    requireNumber(node.transform.rotationMode, `nodes[${index}].transform.rotationMode`);
    if (node.drivers !== undefined) {
      const drivers = requireArray(node.drivers, `nodes[${index}].drivers`);
      if (drivers.length > 256) throw new Error(`SceneIR.nodes[${index}].drivers exceeds the budget`);
      for (const [driverIndex, driver] of drivers.entries()) {
        if (!isRecord(driver)) throw new Error(`SceneIR.nodes[${index}].drivers[${driverIndex}] must be an object`);
        for (const field of ["path", "expression", "type"] as const) requireString(driver[field], `nodes[${index}].drivers[${driverIndex}].${field}`);
        for (const field of ["arrayIndex", "typeCode", "flags", "influence"] as const) requireNumber(driver[field], `nodes[${index}].drivers[${driverIndex}].${field}`);
        requireBoolean(driver.editable, `nodes[${index}].drivers[${driverIndex}].editable`);
        requireBoolean(driver.enabled, `nodes[${index}].drivers[${driverIndex}].enabled`);
        const variables = requireArray(driver.variables, `nodes[${index}].drivers[${driverIndex}].variables`);
        if (variables.length > 64) throw new Error(`SceneIR.nodes[${index}].drivers[${driverIndex}].variables exceeds the budget`);
        for (const [variableIndex, variable] of variables.entries()) {
          if (!isRecord(variable)) throw new Error(`SceneIR.nodes[${index}].drivers[${driverIndex}].variables[${variableIndex}] must be an object`);
          requireString(variable.name, `nodes[${index}].drivers[${driverIndex}].variables[${variableIndex}].name`);
          requireNumber(variable.type, `nodes[${index}].drivers[${driverIndex}].variables[${variableIndex}].type`);
          requireNumber(variable.targetCount, `nodes[${index}].drivers[${driverIndex}].variables[${variableIndex}].targetCount`);
          if (variable.targets !== undefined) {
            const targets = requireArray(variable.targets, `nodes[${index}].drivers[${driverIndex}].variables[${variableIndex}].targets`);
            if (targets.length !== variable.targetCount) throw new Error(`SceneIR.nodes[${index}].drivers[${driverIndex}].variables[${variableIndex}].targets count mismatch`);
            for (const [targetIndex, target] of targets.entries()) {
              if (!isRecord(target)) throw new Error(`SceneIR.nodes[${index}].drivers[${driverIndex}].variables[${variableIndex}].targets[${targetIndex}] must be an object`);
              for (const field of ["idName", "dataPath", "boneTarget"] as const) requireString(target[field], `nodes[${index}].drivers[${driverIndex}].variables[${variableIndex}].targets[${targetIndex}].${field}`);
              for (const field of ["transformType", "rotationMode", "flags", "options", "idType", "contextProperty", "fallbackValue"] as const) requireNumber(target[field], `nodes[${index}].drivers[${driverIndex}].variables[${variableIndex}].targets[${targetIndex}].${field}`);
            }
          }
        }
      }
    }
  }
  for (const [index, mesh] of meshes.entries()) {
    if (!isRecord(mesh)) throw new Error(`SceneIR.meshes[${index}] must be an object`);
    requireString(mesh.id, `meshes[${index}].id`);
    const vertexCount = requireNumber(mesh.vertexCount, `meshes[${index}].vertexCount`);
    const edgeCount = requireNumber(mesh.edgeCount, `meshes[${index}].edgeCount`);
    requireNumber(mesh.faceCount, `meshes[${index}].faceCount`);
    const cornerCount = requireNumber(mesh.cornerCount, `meshes[${index}].cornerCount`);
    if (mesh.positions !== undefined) requireTuple(mesh.positions, vertexCount * 3, `meshes[${index}].positions`);
    if (mesh.normals !== undefined) requireTuple(mesh.normals, vertexCount * 3, `meshes[${index}].normals`);
    if (mesh.uvs !== undefined) requireTuple(mesh.uvs, cornerCount * 2, `meshes[${index}].uvs`);
    if (mesh.colors !== undefined) requireTuple(mesh.colors, cornerCount * 4, `meshes[${index}].colors`);
    if (mesh.sculptMask !== undefined) {
      if (!Array.isArray(mesh.sculptMask) || mesh.sculptMask.length !== vertexCount || mesh.sculptMask.some((item) => typeof item !== "number" || !Number.isFinite(item) || item < 0 || item > 1)) {
        throw new Error(`SceneIR.meshes[${index}].sculptMask must match vertexCount and contain values in [0,1]`);
      }
    }
    if (mesh.faceSets !== undefined) {
      if (!Array.isArray(mesh.faceSets) || mesh.faceSets.length !== mesh.faceCount || mesh.faceSets.some((item) => typeof item !== "number" || !Number.isSafeInteger(item) || item < 0)) {
        throw new Error(`SceneIR.meshes[${index}].faceSets must match faceCount and contain non-negative integers`);
      }
    }
    if (mesh.activeFaceSet !== undefined && (typeof mesh.activeFaceSet !== "number" || !Number.isSafeInteger(mesh.activeFaceSet) || mesh.activeFaceSet < -1)) throw new Error(`SceneIR.meshes[${index}].activeFaceSet is invalid`);
    if (mesh.sculptRevision !== undefined && (typeof mesh.sculptRevision !== "number" || !Number.isSafeInteger(mesh.sculptRevision) || mesh.sculptRevision < 0)) throw new Error(`SceneIR.meshes[${index}].sculptRevision is invalid`);
    if (mesh.indices !== undefined) {
      if (!Array.isArray(mesh.indices) || mesh.indices.some((item) => !Number.isInteger(item) || item < 0)) {
        throw new Error(`SceneIR.meshes[${index}].indices must contain non-negative integers`);
      }
      if (mesh.indices.length % 3 !== 0) throw new Error(`SceneIR.meshes[${index}].indices must contain triangles`);
    }
    if (mesh.edgeVertexIndices !== undefined) {
      if (!Array.isArray(mesh.edgeVertexIndices) || mesh.edgeVertexIndices.some((item) => !Number.isInteger(item) || item < 0 || item >= vertexCount)) {
        throw new Error(`SceneIR.meshes[${index}].edgeVertexIndices must contain valid vertex indices`);
      }
      if (mesh.edgeVertexIndices.length !== edgeCount * 2) throw new Error(`SceneIR.meshes[${index}].edgeVertexIndices length must match edgeCount`);
    }
    if (mesh.triangleCornerIndices !== undefined) {
      if (!Array.isArray(mesh.triangleCornerIndices) || mesh.triangleCornerIndices.some((item) => !Number.isInteger(item) || item < 0)) {
        throw new Error(`SceneIR.meshes[${index}].triangleCornerIndices must contain non-negative integers`);
      }
      if (mesh.indices !== undefined && mesh.triangleCornerIndices.length !== mesh.indices.length) {
        throw new Error(`SceneIR.meshes[${index}].triangleCornerIndices length must match index count`);
      }
    }
    if (mesh.triangleMaterialIndices !== undefined) {
      if (!Array.isArray(mesh.triangleMaterialIndices) || mesh.triangleMaterialIndices.some((item) => !Number.isInteger(item) || item < 0)) {
        throw new Error(`SceneIR.meshes[${index}].triangleMaterialIndices must contain non-negative integers`);
      }
      if (mesh.indices !== undefined && mesh.triangleMaterialIndices.length !== mesh.indices.length / 3) {
        throw new Error(`SceneIR.meshes[${index}].triangleMaterialIndices length must match triangle count`);
      }
    }
    if (mesh.materialSlotIds !== undefined && (!Array.isArray(mesh.materialSlotIds) || mesh.materialSlotIds.some((item) => typeof item !== "string"))) {
      throw new Error(`SceneIR.meshes[${index}].materialSlotIds must contain strings`);
    }
    if (mesh.bounds !== undefined) {
      if (!isRecord(mesh.bounds)) throw new Error(`SceneIR.meshes[${index}].bounds must be an object`);
      requireTuple(mesh.bounds.min, 3, `meshes[${index}].bounds.min`);
      requireTuple(mesh.bounds.max, 3, `meshes[${index}].bounds.max`);
    }
    if (mesh.modifierStack !== undefined) {
      if (!Array.isArray(mesh.modifierStack)) throw new Error(`SceneIR.meshes[${index}].modifierStack must be an array`);
      for (const [modifierIndex, modifier] of mesh.modifierStack.entries()) {
        if (!isRecord(modifier)) throw new Error(`SceneIR.meshes[${index}].modifierStack[${modifierIndex}] must be an object`);
        requireString(modifier.uuid, `meshes[${index}].modifierStack[${modifierIndex}].uuid`);
        requireString(modifier.type, `meshes[${index}].modifierStack[${modifierIndex}].type`);
        requireString(modifier.name, `meshes[${index}].modifierStack[${modifierIndex}].name`);
        requireBoolean(modifier.enabled, `meshes[${index}].modifierStack[${modifierIndex}].enabled`);
        requireBoolean(modifier.showViewport, `meshes[${index}].modifierStack[${modifierIndex}].showViewport`);
        requireBoolean(modifier.showRender, `meshes[${index}].modifierStack[${modifierIndex}].showRender`);
        if (!isRecord(modifier.parameters)) throw new Error(`SceneIR.meshes[${index}].modifierStack[${modifierIndex}].parameters must be an object`);
        if (modifier.dependsOn !== undefined && (!Array.isArray(modifier.dependsOn) || modifier.dependsOn.some((item) => typeof item !== "string"))) {
          throw new Error(`SceneIR.meshes[${index}].modifierStack[${modifierIndex}].dependsOn must contain strings`);
        }
        if (modifier.evaluationStatus !== undefined && !["EVALUATED", "METADATA_ONLY", "BLOCKED"].includes(modifier.evaluationStatus as string)) {
          throw new Error(`SceneIR.meshes[${index}].modifierStack[${modifierIndex}].evaluationStatus is invalid`);
        }
      }
    }
    if (mesh.skinWeights !== undefined) {
      if (!isRecord(mesh.skinWeights)) throw new Error(`SceneIR.meshes[${index}].skinWeights must be an object`);
      const skin = mesh.skinWeights;
      const boneNames = requireArray(skin.boneNames, `meshes[${index}].skinWeights.boneNames`);
      if (boneNames.some((item) => typeof item !== "string")) throw new Error(`SceneIR.meshes[${index}].skinWeights.boneNames must contain strings`);
      const indices = requireArray(skin.indices, `meshes[${index}].skinWeights.indices`);
      const weights = requireArray(skin.weights, `meshes[${index}].skinWeights.weights`);
      if (indices.length !== weights.length || indices.length !== vertexCount * 4) throw new Error(`SceneIR.meshes[${index}].skinWeights arrays must contain vertexCount * 4 entries`);
      if (indices.some((item) => typeof item !== "number" || !Number.isInteger(item) || item < 0 || item >= boneNames.length)) throw new Error(`SceneIR.meshes[${index}].skinWeights.indices are invalid`);
      if (weights.some((item) => typeof item !== "number" || !Number.isFinite(item) || item < 0)) throw new Error(`SceneIR.meshes[${index}].skinWeights.weights are invalid`);
      requireTuple(skin.bindMatrix, 16, `meshes[${index}].skinWeights.bindMatrix`);
      if (skin.armatureId !== undefined) requireString(skin.armatureId, `meshes[${index}].skinWeights.armatureId`);
      if (skin.jointIds !== undefined) {
        if (!Array.isArray(skin.jointIds) || skin.jointIds.some((item) => typeof item !== "string")) {
          throw new Error(`meshes[${index}].skinWeights.jointIds must contain strings`);
        }
        if (skin.jointIds.length !== boneNames.length) throw new Error(`meshes[${index}].skinWeights.jointIds must match boneNames`);
      }
    }
    if (mesh.shapeKeys !== undefined) {
      if (!Array.isArray(mesh.shapeKeys)) throw new Error(`SceneIR.meshes[${index}].shapeKeys must be an array`);
      for (const [shapeIndex, shape] of mesh.shapeKeys.entries()) {
        if (!isRecord(shape)) throw new Error(`SceneIR.meshes[${index}].shapeKeys[${shapeIndex}] must be an object`);
        requireString(shape.name, `meshes[${index}].shapeKeys[${shapeIndex}].name`);
        requireTuple(shape.positions, vertexCount * 3, `meshes[${index}].shapeKeys[${shapeIndex}].positions`);
        if (shape.relativeTo !== undefined && shape.relativeTo !== null) requireString(shape.relativeTo, `meshes[${index}].shapeKeys[${shapeIndex}].relativeTo`);
        if (shape.value !== undefined) requireNumber(shape.value, `meshes[${index}].shapeKeys[${shapeIndex}].value`);
      }
    }
    if (mesh.geometryStatus === "available" && (!mesh.positions || !mesh.indices || !["triangles", "lines", "points"].includes(mesh.topology as string))) {
      throw new Error(`SceneIR.meshes[${index}] available geometry is incomplete`);
    }
    if (mesh.topology === "lines" && mesh.edgeVertexIndices === undefined && mesh.geometryStatus === "available") {
      throw new Error(`SceneIR.meshes[${index}] line geometry is missing edgeVertexIndices`);
    }
    if (mesh.topology === "lines" && mesh.geometryStatus === "binary" && edgeCount === 0) {
      throw new Error(`SceneIR.meshes[${index}] line geometry must contain edges`);
    }
    if (mesh.geometryStatus === "binary" && (typeof mesh.geometryBufferId !== "string" || !["triangles", "lines", "points"].includes(mesh.topology as string))) {
      throw new Error(`SceneIR.meshes[${index}] binary geometry is incomplete`);
    }
  }
  for (const [index, armature] of ((value.armatures ?? []) as unknown[]).entries()) {
    if (!isRecord(armature)) throw new Error(`SceneIR.armatures[${index}] must be an object`);
    requireString(armature.id, `armatures[${index}].id`);
    requireString(armature.name, `armatures[${index}].name`);
    if (armature.objectId !== undefined) requireString(armature.objectId, `armatures[${index}].objectId`);
    const bones = requireArray(armature.bones, `armatures[${index}].bones`);
    for (const [boneIndex, bone] of bones.entries()) {
      if (!isRecord(bone)) throw new Error(`SceneIR.armatures[${index}].bones[${boneIndex}] must be an object`);
      requireString(bone.id, `armatures[${index}].bones[${boneIndex}].id`);
      requireString(bone.name, `armatures[${index}].bones[${boneIndex}].name`);
      if (bone.parentId !== null) requireString(bone.parentId, `armatures[${index}].bones[${boneIndex}].parentId`);
      requireTuple(bone.head, 3, `armatures[${index}].bones[${boneIndex}].head`);
      requireTuple(bone.tail, 3, `armatures[${index}].bones[${boneIndex}].tail`);
      if (bone.roll !== undefined) requireNumber(bone.roll, `armatures[${index}].bones[${boneIndex}].roll`);
      if (bone.connected !== undefined) requireBoolean(bone.connected, `armatures[${index}].bones[${boneIndex}].connected`);
      requireTuple(bone.restMatrix, 16, `armatures[${index}].bones[${boneIndex}].restMatrix`);
      if (bone.poseMatrix !== undefined) requireTuple(bone.poseMatrix, 16, `armatures[${index}].bones[${boneIndex}].poseMatrix`);
      if (bone.poseConstraints !== undefined) {
        const constraints = requireArray(bone.poseConstraints, `armatures[${index}].bones[${boneIndex}].poseConstraints`);
        for (const [constraintIndex, constraint] of constraints.entries()) {
          if (!isRecord(constraint)) throw new Error(`armatures[${index}].bones[${boneIndex}].poseConstraints[${constraintIndex}] must be an object`);
          requireString(constraint.name, `armatures[${index}].bones[${boneIndex}].poseConstraints[${constraintIndex}].name`);
          requireString(constraint.type, `armatures[${index}].bones[${boneIndex}].poseConstraints[${constraintIndex}].type`);
          if (constraint.targetObjectId !== undefined && constraint.targetObjectId !== null) requireString(constraint.targetObjectId, `armatures[${index}].bones[${boneIndex}].poseConstraints[${constraintIndex}].targetObjectId`);
          if (constraint.targetBoneName !== undefined) requireString(constraint.targetBoneName, `armatures[${index}].bones[${boneIndex}].poseConstraints[${constraintIndex}].targetBoneName`);
          requireNumber(constraint.influence, `armatures[${index}].bones[${boneIndex}].poseConstraints[${constraintIndex}].influence`);
          requireBoolean(constraint.enabled, `armatures[${index}].bones[${boneIndex}].poseConstraints[${constraintIndex}].enabled`);
        }
      }
    }
  }
  for (const [index, image] of (value.images as unknown[]).entries()) {
    if (!isRecord(image)) throw new Error(`SceneIR.images[${index}] must be an object`);
    requireString(image.id, `images[${index}].id`);
    requireString(image.name, `images[${index}].name`);
    requireString(image.assetId, `images[${index}].assetId`);
    if (image.sourcePath !== undefined) requireString(image.sourcePath, `images[${index}].sourcePath`);
    if (image.packed !== undefined) requireBoolean(image.packed, `images[${index}].packed`);
    if (image.packedByteLength !== undefined) requireNumber(image.packedByteLength, `images[${index}].packedByteLength`);
    if (image.colorSpace !== undefined && !["SRGB", "NON_COLOR", "LINEAR"].includes(image.colorSpace as string)) throw new Error(`images[${index}].colorSpace is invalid`);
    if (image.sourceKind !== undefined) requireString(image.sourceKind, `images[${index}].sourceKind`);
    if (image.assetStatus !== undefined) requireString(image.assetStatus, `images[${index}].assetStatus`);
    if (image.libraryLinked !== undefined) requireBoolean(image.libraryLinked, `images[${index}].libraryLinked`);
    if (image.libraryPath !== undefined) requireString(image.libraryPath, `images[${index}].libraryPath`);
    if (image.tiles !== undefined && !Array.isArray(image.tiles)) throw new Error(`images[${index}].tiles must be an array`);
  }
  const nonMeshIds = new Set<string>();
  const vfontIds = new Set<string>();
  if (value.vfonts !== undefined) {
    if (!Array.isArray(value.vfonts) || value.vfonts.length > 4096) throw new Error("SceneIR.vfonts is invalid");
    for (const [index, font] of value.vfonts.entries()) {
      if (!isRecord(font)) throw new Error(`SceneIR.vfonts[${index}] is invalid`);
      const id = requireString(font.id, `vfonts[${index}].id`);
      if (!id.startsWith("vfont:") || vfontIds.has(id)) throw new Error(`SceneIR.vfonts[${index}].id is invalid`);
      vfontIds.add(id);
      requireString(font.name, `vfonts[${index}].name`);
      requireString(font.sourcePath, `vfonts[${index}].sourcePath`);
      requireBoolean(font.builtin, `vfonts[${index}].builtin`);
      requireBoolean(font.packed, `vfonts[${index}].packed`);
      if (font.packed) {
        if (!Number.isSafeInteger(font.packedByteLength) || (font.packedByteLength as number) <= 0 ||
            typeof font.sha256 !== "string" || !/^[0-9a-f]{64}$/.test(font.sha256)) {
          throw new Error(`SceneIR.vfonts[${index}] packed identity is invalid`);
        }
      }
      else if (font.packedByteLength !== undefined || font.sha256 !== undefined) {
        throw new Error(`SceneIR.vfonts[${index}] unpacked identity is invalid`);
      }
    }
  }
  for (const [index, data] of ((value.nonMeshData ?? []) as unknown[]).entries()) {
    if (!isRecord(data)) throw new Error(`SceneIR.nonMeshData[${index}] must be an object`);
    const dataId = requireString(data.id, `nonMeshData[${index}].id`);
    if (nonMeshIds.has(dataId)) throw new Error(`SceneIR.nonMeshData contains duplicate id: ${dataId}`);
    nonMeshIds.add(dataId);
    requireString(data.name, `nonMeshData[${index}].name`);
    if (!["CURVE", "SURFACE", "FONT", "METABALL", "POINT_CLOUD", "CURVES", "VOLUME", "HAIR"].includes(data.type as string)) throw new Error(`SceneIR.nonMeshData[${index}].type is invalid`);
    if (!["summary-only", "available", "binary", "blocked"].includes(data.geometryStatus as string)) throw new Error(`SceneIR.nonMeshData[${index}].geometryStatus is invalid`);
    const pointCount = requireNumber(data.pointCount, `nonMeshData[${index}].pointCount`);
    const splineCount = requireNumber(data.splineCount, `nonMeshData[${index}].splineCount`);
    if (!Number.isSafeInteger(pointCount) || pointCount < 0 || (pointCount > 1_000_000 && (data.geometryStatus !== "blocked" || data.errorCode !== "NON_MESH_DATA_BUDGET_EXCEEDED"))) throw new Error(`SceneIR.nonMeshData[${index}].pointCount exceeds the 1M point budget without a blocked gate`);
    if (!Number.isSafeInteger(splineCount) || splineCount < 0 || splineCount > 1_000_000) throw new Error(`SceneIR.nonMeshData[${index}].splineCount is invalid`);
    if (data.geometryStatus === "binary" && (typeof data.geometryBufferId !== "string" || data.geometryBufferId.length === 0)) throw new Error(`SceneIR.nonMeshData[${index}] binary geometry is incomplete`);
    if (data.controlPoints !== undefined) {
      if (!Array.isArray(data.controlPoints) || data.controlPoints.some((item) => typeof item !== "number" || !Number.isFinite(item)) || data.controlPoints.length % 3 !== 0) throw new Error(`SceneIR.nonMeshData[${index}].controlPoints is invalid`);
      if (data.geometryStatus !== "available") throw new Error(`SceneIR.nonMeshData[${index}].controlPoints requires available geometry`);
      if (data.controlPoints.length !== pointCount * 3) throw new Error(`SceneIR.nonMeshData[${index}].controlPoints does not match pointCount`);
    }
    if (data.radii !== undefined && (!Array.isArray(data.radii) || data.radii.length !== pointCount || data.radii.some((item) => typeof item !== "number" || !Number.isFinite(item) || item < 0))) throw new Error(`SceneIR.nonMeshData[${index}].radii is invalid`);
    if (data.splineOffsets !== undefined) {
      if (!Array.isArray(data.splineOffsets) || data.splineOffsets.length !== splineCount + 1 || data.splineOffsets.some((item) => typeof item !== "number" || !Number.isSafeInteger(item) || item < 0) || data.splineOffsets[0] !== 0 || data.splineOffsets.at(-1) !== pointCount) throw new Error(`SceneIR.nonMeshData[${index}].splineOffsets is invalid`);
      for (let offsetIndex = 1; offsetIndex < data.splineOffsets.length; offsetIndex++) {
        if (data.splineOffsets[offsetIndex] <= data.splineOffsets[offsetIndex - 1]) throw new Error(`SceneIR.nonMeshData[${index}].splineOffsets must be strictly increasing`);
      }
    }
    if (data.splineDimensions !== undefined) {
      if (!Array.isArray(data.splineDimensions) || data.splineDimensions.length !== splineCount) throw new Error(`SceneIR.nonMeshData[${index}].splineDimensions is invalid`);
      let dimensionPoints = 0;
      for (const [dimensionIndex, dimension] of data.splineDimensions.entries()) {
        if (!isRecord(dimension)) throw new Error(`SceneIR.nonMeshData[${index}].splineDimensions[${dimensionIndex}] is invalid`);
        for (const field of ["u", "v", "orderU", "orderV"] as const) if (!Number.isSafeInteger(dimension[field]) || (dimension[field] as number) < (field === "u" || field === "v" ? 1 : 0) || (dimension[field] as number) > 1_000_000) throw new Error(`SceneIR.nonMeshData[${index}].splineDimensions[${dimensionIndex}].${field} is invalid`);
        if ((dimension.orderU as number) > (dimension.u as number) || (dimension.orderV as number) > (dimension.v as number)) throw new Error(`SceneIR.nonMeshData[${index}].splineDimensions[${dimensionIndex}] order exceeds its control grid`);
        dimensionPoints += (dimension.u as number) * (dimension.v as number);
      }
      if (!Number.isSafeInteger(dimensionPoints) || dimensionPoints !== pointCount) throw new Error(`SceneIR.nonMeshData[${index}].splineDimensions does not cover pointCount`);
    }
    if (data.pointWeights !== undefined && (!Array.isArray(data.pointWeights) || data.pointWeights.length !== pointCount || data.pointWeights.some((weight) => typeof weight !== "number" || !Number.isFinite(weight) || weight <= 0 || weight > 1000000))) throw new Error(`SceneIR.nonMeshData[${index}].pointWeights is invalid`);
    if (data.splineTypes !== undefined && (!Array.isArray(data.splineTypes) || data.splineTypes.length !== splineCount || data.splineTypes.some((item) => !["POLY", "BEZIER", "NURBS"].includes(item as string)))) throw new Error(`SceneIR.nonMeshData[${index}].splineTypes is invalid`);
    for (const field of ["cyclicU", "cyclicV"] as const) {
      if (data[field] !== undefined && (!Array.isArray(data[field]) || data[field].length !== splineCount || data[field].some((item) => typeof item !== "boolean"))) throw new Error(`SceneIR.nonMeshData[${index}].${field} is invalid`);
    }
    if (data.handleTypes !== undefined && (!Array.isArray(data.handleTypes) || data.handleTypes.length > pointCount * 2 || data.handleTypes.length % 2 !== 0 || data.handleTypes.some((item) => !Number.isSafeInteger(item) || item < 0 || item > 5))) throw new Error(`SceneIR.nonMeshData[${index}].handleTypes is invalid`);
    if (data.handlePoints !== undefined && (!Array.isArray(data.handlePoints) || data.handlePoints.length > pointCount * 6 || data.handlePoints.length % 6 !== 0 || data.handlePoints.some((item) => typeof item !== "number" || !Number.isFinite(item)))) throw new Error(`SceneIR.nonMeshData[${index}].handlePoints is invalid`);
    if (data.handlePointIndices !== undefined && (!Array.isArray(data.handlePointIndices) || !Array.isArray(data.handlePoints) || data.handlePointIndices.length !== data.handlePoints.length / 6 || data.handlePointIndices.some((item) => !Number.isSafeInteger(item) || item < 0 || item >= pointCount) || new Set(data.handlePointIndices).size !== data.handlePointIndices.length)) throw new Error(`SceneIR.nonMeshData[${index}].handlePointIndices is invalid`);
    const parseAttribute = (attribute: unknown, attributeIndex: number, requireValues: boolean): void => {
      if (!isRecord(attribute)) throw new Error(`SceneIR.nonMeshData[${index}].attributes[${attributeIndex}] must be an object`);
      requireString(attribute.name, `nonMeshData[${index}].attributes[${attributeIndex}].name`);
      if (!["POINT", "CURVE", "INSTANCE"].includes(attribute.domain as string)) throw new Error(`SceneIR.nonMeshData[${index}].attributes[${attributeIndex}].domain is invalid`);
      if (!["BOOL", "INT", "FLOAT", "FLOAT2", "FLOAT3", "BYTE_COLOR", "FLOAT_COLOR"].includes(attribute.dataType as string)) throw new Error(`SceneIR.nonMeshData[${index}].attributes[${attributeIndex}].dataType is invalid`);
      if (![1, 2, 3, 4].includes(attribute.components as number)) throw new Error(`SceneIR.nonMeshData[${index}].attributes[${attributeIndex}].components is invalid`);
      if (requireValues) {
        const domainCount = attribute.domain === "POINT" ? pointCount : attribute.domain === "CURVE" ? splineCount : 1;
        if (!Array.isArray(attribute.values) || attribute.values.length !== domainCount * (attribute.components as number) || attribute.values.some((item) => typeof item !== "number" || !Number.isFinite(item))) throw new Error(`SceneIR.nonMeshData[${index}].attributeValues[${attributeIndex}].values is invalid`);
      }
    };
    if (data.attributes !== undefined) {
      if (!Array.isArray(data.attributes)) throw new Error(`SceneIR.nonMeshData[${index}].attributes must be an array`);
      data.attributes.forEach((attribute, attributeIndex) => parseAttribute(attribute, attributeIndex, false));
    }
    if (data.attributeValues !== undefined) {
      if (!Array.isArray(data.attributeValues) || data.geometryStatus !== "available") throw new Error(`SceneIR.nonMeshData[${index}].attributeValues requires available geometry`);
      data.attributeValues.forEach((attribute, attributeIndex) => parseAttribute(attribute, attributeIndex, true));
    }
    if (data.text !== undefined) requireString(data.text, `nonMeshData[${index}].text`);
    if (data.fontProperties !== undefined) {
      if (!isRecord(data.fontProperties) || data.type !== "FONT") throw new Error(`SceneIR.nonMeshData[${index}].fontProperties is invalid`);
      if (!["LEFT", "CENTER", "RIGHT", "JUSTIFY", "FLUSH"].includes(data.fontProperties.alignment as string)) throw new Error(`SceneIR.nonMeshData[${index}].fontProperties.alignment is invalid`);
      if (!["TOP_BASELINE", "TOP", "CENTER", "BOTTOM_BASELINE", "BOTTOM"].includes(data.fontProperties.alignY as string)) throw new Error(`SceneIR.nonMeshData[${index}].fontProperties.alignY is invalid`);
      for (const field of ["extrude", "bevelDepth", "offset"] as const) {
        const property = requireNumber(data.fontProperties[field], `nonMeshData[${index}].fontProperties.${field}`);
        if (property < 0 || property > 1000) throw new Error(`SceneIR.nonMeshData[${index}].fontProperties.${field} is outside the bounded range`);
      }
      const bevelResolution = requireNumber(data.fontProperties.bevelResolution, `nonMeshData[${index}].fontProperties.bevelResolution`);
      if (!Number.isSafeInteger(bevelResolution) || bevelResolution < 0 || bevelResolution > 64) throw new Error(`SceneIR.nonMeshData[${index}].fontProperties.bevelResolution is invalid`);
      const boundedFontFields: Array<[keyof NonMeshFontPropertiesIR, number, number]> = [["spacing", 0, 10], ["lineDistance", 0, 10], ["wordSpace", 0, 100], ["shear", -10, 10], ["fontSize", 0.001, 1000], ["offsetX", -100000, 100000], ["offsetY", -100000, 100000]];
      for (const [field, minimum, maximum] of boundedFontFields) if (data.fontProperties[field] !== undefined) {
        const property = requireNumber(data.fontProperties[field], `nonMeshData[${index}].fontProperties.${field}`);
        if (property < minimum || property > maximum) throw new Error(`SceneIR.nonMeshData[${index}].fontProperties.${field} is outside the bounded range`);
      }
    }
    if (data.fontCharacters !== undefined) {
      if (data.type !== "FONT" || !Array.isArray(data.fontCharacters) || typeof data.text !== "string" || data.fontCharacters.length !== Array.from(data.text).length) throw new Error(`SceneIR.nonMeshData[${index}].fontCharacters must match the Font code-point count`);
      for (const [characterIndex, character] of data.fontCharacters.entries()) {
        if (!isRecord(character)) throw new Error(`SceneIR.nonMeshData[${index}].fontCharacters[${characterIndex}] is invalid`);
        const kern = requireNumber(character.kern, `nonMeshData[${index}].fontCharacters[${characterIndex}].kern`);
        const materialIndex = requireNumber(character.materialIndex, `nonMeshData[${index}].fontCharacters[${characterIndex}].materialIndex`);
        const styleFlags = requireNumber(character.styleFlags, `nonMeshData[${index}].fontCharacters[${characterIndex}].styleFlags`);
        if (kern < -1000 || kern > 1000 || !Number.isSafeInteger(materialIndex) || materialIndex < 0 || materialIndex > 32767 || !Number.isSafeInteger(styleFlags) || styleFlags < 0 || (styleFlags & ~0x17) !== 0) throw new Error(`SceneIR.nonMeshData[${index}].fontCharacters[${characterIndex}] is outside the bounded range`);
      }
    }
    if (data.fontTextBoxes !== undefined) {
      if (data.type !== "FONT" || !Array.isArray(data.fontTextBoxes) || data.fontTextBoxes.length === 0 || data.fontTextBoxes.length > 256) throw new Error(`SceneIR.nonMeshData[${index}].fontTextBoxes is invalid`);
      for (const [boxIndex, box] of data.fontTextBoxes.entries()) {
        if (!isRecord(box)) throw new Error(`SceneIR.nonMeshData[${index}].fontTextBoxes[${boxIndex}] is invalid`);
        for (const field of ["x", "y", "width", "height"] as const) {
          const value = requireNumber(box[field], `nonMeshData[${index}].fontTextBoxes[${boxIndex}].${field}`);
          if (value < (field === "width" || field === "height" ? 0 : -100000) || value > 100000) throw new Error(`SceneIR.nonMeshData[${index}].fontTextBoxes[${boxIndex}].${field} is outside the bounded range`);
        }
      }
      if (!Number.isSafeInteger(data.activeFontTextBox) || (data.activeFontTextBox as number) < 0 || (data.activeFontTextBox as number) >= data.fontTextBoxes.length) throw new Error(`SceneIR.nonMeshData[${index}].activeFontTextBox is invalid`);
    }
    if (data.fontLinks !== undefined) {
      if (data.type !== "FONT" || !isRecord(data.fontLinks)) throw new Error(`SceneIR.nonMeshData[${index}].fontLinks is invalid`);
      for (const field of ["regular", "bold", "italic", "boldItalic"] as const) {
        const id = requireString(data.fontLinks[field], `nonMeshData[${index}].fontLinks.${field}`);
        if (!vfontIds.has(id)) throw new Error(`SceneIR.nonMeshData[${index}].fontLinks.${field} references a missing VFont`);
      }
    }
    if (data.resolution !== undefined) requireNumber(data.resolution, `nonMeshData[${index}].resolution`);
    if (data.sourcePath !== undefined) requireString(data.sourcePath, `nonMeshData[${index}].sourcePath`);
    if (data.resourceKind !== undefined && data.resourceKind !== "OPENVDB") throw new Error(`SceneIR.nonMeshData[${index}].resourceKind is invalid`);
    if (data.resourceByteLength !== undefined && (!Number.isSafeInteger(data.resourceByteLength) || (data.resourceByteLength as number) < 0)) throw new Error(`SceneIR.nonMeshData[${index}].resourceByteLength is invalid`);
    if (data.errorCode !== undefined) requireString(data.errorCode, `nonMeshData[${index}].errorCode`);
    if (data.elements !== undefined) {
      if (!Array.isArray(data.elements)) throw new Error(`SceneIR.nonMeshData[${index}].elements must be an array`);
      for (const [elementIndex, element] of data.elements.entries()) {
        if (!isRecord(element)) throw new Error(`SceneIR.nonMeshData[${index}].elements[${elementIndex}] must be an object`);
        requireNumber(element.type, `nonMeshData[${index}].elements[${elementIndex}].type`);
        requireTuple(element.position, 3, `nonMeshData[${index}].elements[${elementIndex}].position`);
        requireNumber(element.radius, `nonMeshData[${index}].elements[${elementIndex}].radius`);
        requireTuple(element.scale, 3, `nonMeshData[${index}].elements[${elementIndex}].scale`);
      }
    }
    if (data.evaluatedGeometry !== undefined) {
      if (!Array.isArray(data.evaluatedGeometry)) throw new Error(`SceneIR.nonMeshData[${index}].evaluatedGeometry must be an array`);
      for (const [evaluationIndex, evaluation] of data.evaluatedGeometry.entries()) {
        if (!isRecord(evaluation)) throw new Error(`SceneIR.nonMeshData[${index}].evaluatedGeometry[${evaluationIndex}] must be an object`);
        requireString(evaluation.objectId, `nonMeshData[${index}].evaluatedGeometry[${evaluationIndex}].objectId`);
        requireString(evaluation.meshId, `nonMeshData[${index}].evaluatedGeometry[${evaluationIndex}].meshId`);
        if (evaluation.status !== "EVALUATED" && evaluation.status !== "BLOCKED") throw new Error(`SceneIR.nonMeshData[${index}].evaluatedGeometry[${evaluationIndex}].status is invalid`);
        if (evaluation.errorCode !== undefined && evaluation.errorCode !== "NON_MESH_DATA_BUDGET_EXCEEDED") throw new Error(`SceneIR.nonMeshData[${index}].evaluatedGeometry[${evaluationIndex}].errorCode is invalid`);
        for (const field of ["vertexCount", "triangleCount"] as const) {
          const count = requireNumber(evaluation[field], `nonMeshData[${index}].evaluatedGeometry[${evaluationIndex}].${field}`);
          if (!Number.isSafeInteger(count) || count < 0) throw new Error(`SceneIR.nonMeshData[${index}].evaluatedGeometry[${evaluationIndex}].${field} is invalid`);
        }
        if (evaluation.edgeCount !== undefined && (!Number.isSafeInteger(evaluation.edgeCount) || (evaluation.edgeCount as number) < 0)) throw new Error(`nonMeshData[${index}].evaluatedGeometry[${evaluationIndex}].edgeCount is invalid`);
      }
    }
    if (data.volumeGrids !== undefined) {
      if (!Array.isArray(data.volumeGrids)) throw new Error(`SceneIR.nonMeshData[${index}].volumeGrids must be an array`);
      for (const [gridIndex, grid] of data.volumeGrids.entries()) {
        if (!isRecord(grid)) throw new Error(`SceneIR.nonMeshData[${index}].volumeGrids[${gridIndex}] must be an object`);
        requireString(grid.name, `nonMeshData[${index}].volumeGrids[${gridIndex}].name`);
        requireString(grid.valueType, `nonMeshData[${index}].volumeGrids[${gridIndex}].valueType`);
        const voxelCount = requireNumber(grid.voxelCount, `nonMeshData[${index}].volumeGrids[${gridIndex}].voxelCount`);
        if (!Number.isSafeInteger(voxelCount) || voxelCount < 0) throw new Error(`SceneIR.nonMeshData[${index}].volumeGrids[${gridIndex}].voxelCount is invalid`);
        if (grid.bounds !== undefined) {
          if (!isRecord(grid.bounds)) throw new Error(`SceneIR.nonMeshData[${index}].volumeGrids[${gridIndex}].bounds is invalid`);
          requireTuple(grid.bounds.min, 3, `nonMeshData[${index}].volumeGrids[${gridIndex}].bounds.min`);
          requireTuple(grid.bounds.max, 3, `nonMeshData[${index}].volumeGrids[${gridIndex}].bounds.max`);
        }
      }
    }
  }
  for (const [index, greasePencil] of ((value.greasePencils ?? []) as unknown[]).entries()) {
    parseGreasePencilData(greasePencil, `SceneIR.greasePencils[${index}]`);
  }
  for (const [index, camera] of (value.cameras as unknown[]).entries()) {
    if (!isRecord(camera)) throw new Error(`SceneIR.cameras[${index}] must be an object`);
    requireString(camera.id, `cameras[${index}].id`);
    requireString(camera.name, `cameras[${index}].name`);
    if (!["PERSPECTIVE", "ORTHOGRAPHIC", "PANORAMIC", "CUSTOM"].includes(camera.projection as string)) {
      throw new Error(`SceneIR.cameras[${index}].projection is invalid`);
    }
    for (const field of ["lensMm", "sensorWidthMm", "sensorHeightMm", "sensorFit", "near", "far", "orthoScale"]) {
      requireNumber(camera[field], `cameras[${index}].${field}`);
    }
    requireTuple(camera.shift, 2, `cameras[${index}].shift`);
    if (camera.panoramaType !== undefined) requireNumber(camera.panoramaType, `cameras[${index}].panoramaType`);
    if (camera.fisheyeFov !== undefined) requireNumber(camera.fisheyeFov, `cameras[${index}].fisheyeFov`);
    if (camera.depthOfField !== undefined) {
      if (!isRecord(camera.depthOfField)) throw new Error(`SceneIR.cameras[${index}].depthOfField must be an object`);
      requireBoolean(camera.depthOfField.enabled, `cameras[${index}].depthOfField.enabled`);
      if (camera.depthOfField.focusObjectId !== undefined && camera.depthOfField.focusObjectId !== null) requireString(camera.depthOfField.focusObjectId, `cameras[${index}].depthOfField.focusObjectId`);
      for (const field of ["focusDistance", "apertureFStop", "apertureBlades", "apertureRotation", "apertureRatio"] as const) requireNumber(camera.depthOfField[field], `cameras[${index}].depthOfField.${field}`);
    }
  }
  for (const [index, material] of (value.materials as unknown[]).entries()) {
    if (!isRecord(material)) throw new Error(`SceneIR.materials[${index}] must be an object`);
    requireString(material.id, `materials[${index}].id`);
    requireString(material.name, `materials[${index}].name`);
    requireTuple(material.baseColor, 4, `materials[${index}].baseColor`);
    requireTuple(material.emissionColor, 4, `materials[${index}].emissionColor`);
    for (const field of ["roughness", "metallic", "alpha", "ior"]) {
      requireNumber(material[field], `materials[${index}].${field}`);
    }
    for (const field of ["specularIORLevel", "transmissionWeight", "coatWeight", "coatRoughness", "emissionStrength"]) {
      if (material[field] !== undefined) requireNumber(material[field], `materials[${index}].${field}`);
    }
    for (const field of ["specularIORLevel", "transmissionWeight", "coatWeight", "coatRoughness"]) {
      if (typeof material[field] === "number" && (material[field] < 0 || material[field] > 1)) {
        throw new Error(`SceneIR.materials[${index}].${field} must be in [0,1]`);
      }
    }
    if (typeof material.emissionStrength === "number" && (material.emissionStrength < 0 || material.emissionStrength > 1_000_000)) {
      throw new Error(`SceneIR.materials[${index}].emissionStrength is outside the supported range`);
    }
    if (material.normalImageId !== undefined && material.normalImageId !== null) requireString(material.normalImageId, `materials[${index}].normalImageId`);
    if (material.imageIds !== undefined && (!Array.isArray(material.imageIds) || material.imageIds.some((item) => typeof item !== "string"))) {
      throw new Error(`SceneIR.materials[${index}].imageIds must contain strings`);
    }
    if (material.warnings !== undefined && (!Array.isArray(material.warnings) || material.warnings.some((item) => typeof item !== "string"))) {
      throw new Error(`SceneIR.materials[${index}].warnings must contain strings`);
    }
    if (material.nodes !== undefined) {
      if (!Array.isArray(material.nodes)) throw new Error(`SceneIR.materials[${index}].nodes must be an array`);
      for (const [nodeIndex, node] of material.nodes.entries()) {
        if (!isRecord(node)) throw new Error(`SceneIR.materials[${index}].nodes[${nodeIndex}] must be an object`);
        requireString(node.id, `SceneIR.materials[${index}].nodes[${nodeIndex}].id`);
        requireString(node.name, `SceneIR.materials[${index}].nodes[${nodeIndex}].name`);
        if (!["RGB", "VALUE", "MATH", "PRINCIPLED", "IMAGE_TEXTURE", "NORMAL_MAP", "OUTPUT", "UNSUPPORTED"].includes(node.type as string)) throw new Error(`SceneIR.materials[${index}].nodes[${nodeIndex}].type is invalid`);
        if (node.imageId !== undefined && node.imageId !== null) requireString(node.imageId, `SceneIR.materials[${index}].nodes[${nodeIndex}].imageId`);
        if (node.defaultValue !== undefined && (!Array.isArray(node.defaultValue) || node.defaultValue.length === 0 || node.defaultValue.length > 4 || node.defaultValue.some((value) => typeof value !== "number" || !Number.isFinite(value)))) throw new Error(`SceneIR.materials[${index}].nodes[${nodeIndex}].defaultValue is invalid`);
        if (node.properties !== undefined) {
          if (!isRecord(node.properties) || Object.keys(node.properties).some((key) => key !== "operation") ||
              (node.properties.operation !== undefined && !["ADD", "SUBTRACT", "MULTIPLY", "DIVIDE", "MINIMUM", "MAXIMUM"].includes(node.properties.operation as string))) {
            throw new Error(`SceneIR.materials[${index}].nodes[${nodeIndex}].properties is invalid`);
          }
        }
      }
    }
    if (material.links !== undefined) {
      if (!Array.isArray(material.links)) throw new Error(`SceneIR.materials[${index}].links must be an array`);
      for (const [linkIndex, link] of material.links.entries()) {
        if (!isRecord(link)) throw new Error(`SceneIR.materials[${index}].links[${linkIndex}] must be an object`);
        for (const field of ["fromNodeId", "fromSocket", "toNodeId", "toSocket"] as const) requireString(link[field], `SceneIR.materials[${index}].links[${linkIndex}].${field}`);
      }
    }
  }
  for (const [index, light] of (value.lights as unknown[]).entries()) {
    if (!isRecord(light)) throw new Error(`SceneIR.lights[${index}] must be an object`);
    requireString(light.id, `lights[${index}].id`);
    requireString(light.name, `lights[${index}].name`);
    requireNumber(light.lightType, `lights[${index}].lightType`);
    requireTuple(light.color, 3, `lights[${index}].color`);
    for (const field of ["energy", "radius", "spotAngle", "spotBlend", "areaShape", "areaSize", "areaSizeY", "sunAngle"]) {
      requireNumber(light[field], `lights[${index}].${field}`);
    }
    for (const field of ["exposure", "temperature", "areaSpread", "diffuseFactor", "specularFactor", "transmissionFactor", "volumeFactor", "attenuationDistance", "shadowFilterRadius", "shadowMaximumResolution", "shadowJitterOverblur", "cascadeMaxDistance", "cascadeExponent", "cascadeFade", "cascadeCount", "clipStart"] as const) if (light[field] !== undefined) requireNumber(light[field], `lights[${index}].${field}`);
    for (const field of ["useTemperature", "castsShadow"] as const) if (light[field] !== undefined) requireBoolean(light[field], `lights[${index}].${field}`);
  }
  for (const [index, world] of (value.worlds as unknown[]).entries()) {
    if (!isRecord(world)) throw new Error(`SceneIR.worlds[${index}] must be an object`);
    requireString(world.id, `worlds[${index}].id`);
    requireString(world.name, `worlds[${index}].name`);
    requireTuple(world.color, 3, `worlds[${index}].color`);
    requireNumber(world.exposure, `worlds[${index}].exposure`);
    if (world.lightgroup !== undefined && world.lightgroup !== null) requireString(world.lightgroup, `worlds[${index}].lightgroup`);
    if (world.environmentImageId !== undefined && world.environmentImageId !== null) requireString(world.environmentImageId, `worlds[${index}].environmentImageId`);
    if (world.environmentStrength !== undefined) requireNumber(world.environmentStrength, `worlds[${index}].environmentStrength`);
    if (world.environmentRotation !== undefined) requireNumber(world.environmentRotation, `worlds[${index}].environmentRotation`);
    for (const field of ["ambientOcclusionDistance", "ambientOcclusionEnergy", "sunThreshold", "sunAngle", "sunShadowMaximumResolution", "sunShadowJitterOverblur", "sunShadowFilterRadius", "probeResolution"] as const) if (world[field] !== undefined) requireNumber(world[field], `worlds[${index}].${field}`);
    for (const field of ["useSunShadow", "useSunShadowJitter"] as const) if (world[field] !== undefined) requireBoolean(world[field], `worlds[${index}].${field}`);
    if (world.backgroundVisible !== undefined && typeof world.backgroundVisible !== "boolean") throw new Error(`SceneIR.worlds[${index}].backgroundVisible must be a boolean`);
    if (world.mist !== undefined) {
      if (!isRecord(world.mist) || !["QUADRATIC", "LINEAR", "INVERSE_QUADRATIC"].includes(world.mist.type as string)) throw new Error(`SceneIR.worlds[${index}].mist is invalid`);
      requireBoolean(world.mist.enabled, `worlds[${index}].mist.enabled`);
      for (const field of ["start", "depth", "intensity", "height"] as const) requireNumber(world.mist[field], `worlds[${index}].mist.${field}`);
    }
  }
  for (const [index, scene] of (value.scenes as unknown[]).entries()) {
    if (!isRecord(scene)) throw new Error(`SceneIR.scenes[${index}] must be an object`);
    requireString(scene.id, `scenes[${index}].id`);
    requireString(scene.name, `scenes[${index}].name`);
    for (const field of ["rootCollectionId", "cameraObjectId", "worldId"] as const) {
      if (scene[field] !== undefined && scene[field] !== null) requireString(scene[field], `scenes[${index}].${field}`);
    }
    if (scene.renderEngine !== undefined) requireString(scene.renderEngine, `scenes[${index}].renderEngine`);
    if (scene.colorManagement !== undefined) {
      if (!isRecord(scene.colorManagement)) throw new Error(`SceneIR.scenes[${index}].colorManagement must be an object`);
      for (const field of ["displayDevice", "viewTransform", "look"] as const) requireString(scene.colorManagement[field], `scenes[${index}].colorManagement.${field}`);
      for (const field of ["exposure", "gamma"] as const) requireNumber(scene.colorManagement[field], `scenes[${index}].colorManagement.${field}`);
      for (const field of ["temperature", "tint"] as const) if (scene.colorManagement[field] !== undefined) requireNumber(scene.colorManagement[field], `scenes[${index}].colorManagement.${field}`);
      if (scene.colorManagement.whiteBalanceStatus !== undefined && !["AVAILABLE", "BLOCKED"].includes(scene.colorManagement.whiteBalanceStatus as string)) throw new Error(`scenes[${index}].colorManagement.whiteBalanceStatus is invalid`);
    }
    if (scene.renderSettings !== undefined) {
      if (!isRecord(scene.renderSettings)) throw new Error(`SceneIR.scenes[${index}].renderSettings must be an object`);
      for (const field of ["resolutionX", "resolutionY", "resolutionPercentage", "frameStart", "frameEnd"] as const) requireNumber(scene.renderSettings[field], `scenes[${index}].renderSettings.${field}`);
      requireString(scene.renderSettings.outputPath, `scenes[${index}].renderSettings.outputPath`);
    }
    if (scene.audioSettings !== undefined) {
      if (!isRecord(scene.audioSettings)) throw new Error(`SceneIR.scenes[${index}].audioSettings must be an object`);
      for (const field of ["volume", "speedOfSound", "dopplerFactor", "distanceModel"] as const) requireNumber(scene.audioSettings[field], `scenes[${index}].audioSettings.${field}`);
      for (const field of ["muted", "sync"] as const) requireBoolean(scene.audioSettings[field], `scenes[${index}].audioSettings.${field}`);
    }
    if (scene.unitSettings !== undefined) {
      if (!isRecord(scene.unitSettings)) throw new Error(`SceneIR.scenes[${index}].unitSettings must be an object`);
      for (const field of ["system", "scaleLength", "rotationSystem", "lengthUnit", "massUnit", "timeUnit", "temperatureUnit"] as const) requireNumber(scene.unitSettings[field], `scenes[${index}].unitSettings.${field}`);
    }
    if (scene.timelineSettings !== undefined) {
      if (!isRecord(scene.timelineSettings)) throw new Error(`SceneIR.scenes[${index}].timelineSettings must be an object`);
      for (const field of ["fps", "fpsBase", "frameStep", "previewStart", "previewEnd"] as const) requireNumber(scene.timelineSettings[field], `scenes[${index}].timelineSettings.${field}`);
      requireBoolean(scene.timelineSettings.usePreviewRange, `scenes[${index}].timelineSettings.usePreviewRange`);
    }
    if (scene.timelineMarkers !== undefined) {
      const markers = requireArray(scene.timelineMarkers, `scenes[${index}].timelineMarkers`);
      for (const [markerIndex, marker] of markers.entries()) {
        if (!isRecord(marker)) throw new Error(`SceneIR.scenes[${index}].timelineMarkers[${markerIndex}] must be an object`);
        requireNumber(marker.frame, `scenes[${index}].timelineMarkers[${markerIndex}].frame`);
        requireString(marker.name, `scenes[${index}].timelineMarkers[${markerIndex}].name`);
      }
    }
    if (scene.pipelineSettings !== undefined) {
      if (!isRecord(scene.pipelineSettings)) throw new Error(`SceneIR.scenes[${index}].pipelineSettings must be an object`);
      for (const field of ["useCompositor", "useSequencer", "noOverwrite", "saveOutput", "alphaPremultiplied"] as const) requireBoolean(scene.pipelineSettings[field], `scenes[${index}].pipelineSettings.${field}`);
    }
    if (scene.viewLayers !== undefined) {
      if (!Array.isArray(scene.viewLayers)) throw new Error(`SceneIR.scenes[${index}].viewLayers must be an array`);
      for (const [layerIndex, layer] of scene.viewLayers.entries()) {
        if (!isRecord(layer)) throw new Error(`SceneIR.scenes[${index}].viewLayers[${layerIndex}] must be an object`);
        requireString(layer.name, `scenes[${index}].viewLayers[${layerIndex}].name`);
        requireBoolean(layer.useRender, `scenes[${index}].viewLayers[${layerIndex}].useRender`);
        requireBoolean(layer.useFreestyle, `scenes[${index}].viewLayers[${layerIndex}].useFreestyle`);
        requireNumber(layer.samples, `scenes[${index}].viewLayers[${layerIndex}].samples`);
        for (const field of ["passMask", "cryptomatteMask", "cryptomatteLevels", "alphaThreshold"] as const) if (layer[field] !== undefined) requireNumber(layer[field], `scenes[${index}].viewLayers[${layerIndex}].${field}`);
        if (layer.aovs !== undefined) {
          if (!Array.isArray(layer.aovs)) throw new Error(`SceneIR.scenes[${index}].viewLayers[${layerIndex}].aovs must be an array`);
          for (const [aovIndex, aov] of layer.aovs.entries()) { if (!isRecord(aov)) throw new Error(`SceneIR.scenes[${index}].viewLayers[${layerIndex}].aovs[${aovIndex}] must be an object`); requireString(aov.name, `scenes[${index}].viewLayers[${layerIndex}].aovs[${aovIndex}].name`); requireNumber(aov.type, `scenes[${index}].viewLayers[${layerIndex}].aovs[${aovIndex}].type`); }
        }
        if (layer.lightgroups !== undefined) { if (!Array.isArray(layer.lightgroups)) throw new Error(`SceneIR.scenes[${index}].viewLayers[${layerIndex}].lightgroups must be an array`); for (const [groupIndex, group] of layer.lightgroups.entries()) requireString(group, `scenes[${index}].viewLayers[${layerIndex}].lightgroups[${groupIndex}]`); }
      }
    }
    if (scene.borderSettings !== undefined) {
      if (!isRecord(scene.borderSettings)) throw new Error(`SceneIR.scenes[${index}].borderSettings must be an object`);
      requireBoolean(scene.borderSettings.enabled, `scenes[${index}].borderSettings.enabled`);
      for (const field of ["minX", "maxX", "minY", "maxY"] as const) requireNumber(scene.borderSettings[field], `scenes[${index}].borderSettings.${field}`);
    }
    if (scene.simplifySettings !== undefined) {
      if (!isRecord(scene.simplifySettings)) throw new Error(`SceneIR.scenes[${index}].simplifySettings must be an object`);
      for (const field of ["subsurfViewport", "subsurfRender", "particlesViewport", "particlesRender", "volumes"] as const) requireNumber(scene.simplifySettings[field], `scenes[${index}].simplifySettings.${field}`);
    }
    if (scene.imageFormatSettings !== undefined) {
      if (!isRecord(scene.imageFormatSettings)) throw new Error(`SceneIR.scenes[${index}].imageFormatSettings must be an object`);
      requireString(scene.imageFormatSettings.fileType, `scenes[${index}].imageFormatSettings.fileType`);
      for (const field of ["colorMode", "depth", "quality", "compression", "exrCodec"] as const) requireNumber(scene.imageFormatSettings[field], `scenes[${index}].imageFormatSettings.${field}`);
    }
    if (scene.motionBlurSettings !== undefined) {
      if (!isRecord(scene.motionBlurSettings)) throw new Error(`SceneIR.scenes[${index}].motionBlurSettings must be an object`);
      requireBoolean(scene.motionBlurSettings.enabled, `scenes[${index}].motionBlurSettings.enabled`);
      for (const field of ["shutter", "position"] as const) requireNumber(scene.motionBlurSettings[field], `scenes[${index}].motionBlurSettings.${field}`);
    }
    if (scene.hairSettings !== undefined) {
      if (!isRecord(scene.hairSettings)) throw new Error(`SceneIR.scenes[${index}].hairSettings must be an object`);
      requireNumber(scene.hairSettings.type, `scenes[${index}].hairSettings.type`);
      requireNumber(scene.hairSettings.subdivisions, `scenes[${index}].hairSettings.subdivisions`);
    }
    if (scene.compositorSettings !== undefined) {
      if (!isRecord(scene.compositorSettings)) throw new Error(`SceneIR.scenes[${index}].compositorSettings must be an object`);
      for (const field of ["device", "precision", "denoiseDevice", "previewQuality", "finalQuality"] as const) requireNumber(scene.compositorSettings[field], `scenes[${index}].compositorSettings.${field}`);
    }
    if (scene.performanceSettings !== undefined) {
      if (!isRecord(scene.performanceSettings)) throw new Error(`SceneIR.scenes[${index}].performanceSettings must be an object`);
      for (const field of ["fixedThreads", "persistentData", "highQualityNormals"] as const) requireBoolean(scene.performanceSettings[field], `scenes[${index}].performanceSettings.${field}`);
      requireNumber(scene.performanceSettings.threads, `scenes[${index}].performanceSettings.threads`);
    }
    if (scene.samplingSettings !== undefined) {
      if (!isRecord(scene.samplingSettings)) throw new Error(`SceneIR.scenes[${index}].samplingSettings must be an object`);
      for (const field of ["pixelAspectX", "pixelAspectY", "filterSize", "dither"] as const) requireNumber(scene.samplingSettings[field], `scenes[${index}].samplingSettings.${field}`);
    }
    if (scene.multiviewSettings !== undefined) {
      if (!isRecord(scene.multiviewSettings)) throw new Error(`SceneIR.scenes[${index}].multiviewSettings must be an object`);
      for (const field of ["viewsFormat", "imageViewsFormat", "stereoDisplayMode"] as const) requireNumber(scene.multiviewSettings[field], `scenes[${index}].multiviewSettings.${field}`);
      for (const field of ["enabled", "interlaceSwap", "sideBySideCrossed", "squeezedFrame"] as const) requireBoolean(scene.multiviewSettings[field], `scenes[${index}].multiviewSettings.${field}`);
    }
    if (scene.stampSettings !== undefined) {
      if (!isRecord(scene.stampSettings)) throw new Error(`SceneIR.scenes[${index}].stampSettings must be an object`);
      for (const field of ["stampMask", "fontId"] as const) requireNumber(scene.stampSettings[field], `scenes[${index}].stampSettings.${field}`);
      requireString(scene.stampSettings.userText, `scenes[${index}].stampSettings.userText`);
      for (const field of ["foreground", "background"] as const) requireTuple(scene.stampSettings[field], 4, `scenes[${index}].stampSettings.${field}`);
    }
    if (scene.lineSettings !== undefined) {
      if (!isRecord(scene.lineSettings)) throw new Error(`SceneIR.scenes[${index}].lineSettings must be an object`);
      requireNumber(scene.lineSettings.mode, `scenes[${index}].lineSettings.mode`);
      requireNumber(scene.lineSettings.thickness, `scenes[${index}].lineSettings.thickness`);
    }
    if (scene.compositorStatus !== undefined && !["AVAILABLE", "BLOCKED"].includes(scene.compositorStatus as string)) {
      throw new Error(`scenes[${index}].compositorStatus is invalid`);
    }
    if (scene.compositorGraph !== undefined) {
      parseCompositorGraph(scene.compositorGraph);
      if (scene.compositorStatus !== "AVAILABLE") throw new Error(`scenes[${index}].compositorStatus must be AVAILABLE when a graph is present`);
    }
    if (scene.sequencerStatus !== undefined && !["AVAILABLE", "BLOCKED"].includes(scene.sequencerStatus as string)) {
      throw new Error(`scenes[${index}].sequencerStatus is invalid`);
    }
    if (scene.sequencerTimeline !== undefined) {
      parseSequencerTimeline(scene.sequencerTimeline);
      if (scene.sequencerStatus !== "AVAILABLE") throw new Error(`scenes[${index}].sequencerStatus must be AVAILABLE when a timeline is present`);
    }
  }
  for (const [index, animation] of (value.animations as unknown[]).entries()) {
    if (!isRecord(animation)) throw new Error(`SceneIR.animations[${index}] must be an object`);
    requireString(animation.id, `animations[${index}].id`);
    requireString(animation.name, `animations[${index}].name`);
    requireString(animation.targetId, `animations[${index}].targetId`);
    requireNumber(animation.frameStart, `animations[${index}].frameStart`);
    requireNumber(animation.frameEnd, `animations[${index}].frameEnd`);
    if (animation.slots !== undefined) {
      const slots = requireArray(animation.slots, `animations[${index}].slots`);
      if (slots.length > 1024) throw new Error(`animations[${index}].slots exceeds the budget`);
      for (const [slotIndex, slot] of slots.entries()) {
        if (!isRecord(slot)) throw new Error(`animations[${index}].slots[${slotIndex}] must be an object`);
        requireString(slot.identifier, `animations[${index}].slots[${slotIndex}].identifier`);
        for (const field of ["idtype", "handle", "flags"]) requireNumber(slot[field], `animations[${index}].slots[${slotIndex}].${field}`);
      }
    }
    if (animation.strips !== undefined) {
      const strips = requireArray(animation.strips, `animations[${index}].strips`);
      if (strips.length > 1024) throw new Error(`animations[${index}].strips exceeds the budget`);
      for (const [stripIndex, strip] of strips.entries()) {
        if (!isRecord(strip)) throw new Error(`animations[${index}].strips[${stripIndex}] must be an object`);
        requireString(strip.name, `animations[${index}].strips[${stripIndex}].name`);
        if (strip.type !== "KEYFRAME") throw new Error(`animations[${index}].strips[${stripIndex}].type is invalid`);
        requireNumber(strip.frameStart, `animations[${index}].strips[${stripIndex}].frameStart`);
        requireNumber(strip.frameEnd, `animations[${index}].strips[${stripIndex}].frameEnd`);
        requireNumber(strip.dataIndex, `animations[${index}].strips[${stripIndex}].dataIndex`);
      }
    }
    const channels = requireArray(animation.channels, `animations[${index}].channels`);
    for (const [channelIndex, channel] of channels.entries()) {
      if (!isRecord(channel)) throw new Error(`SceneIR.animations[${index}].channels[${channelIndex}] must be an object`);
      requireString(channel.path, `animations[${index}].channels[${channelIndex}].path`);
      if (channel.keyframeSource !== undefined && channel.keyframeSource !== "BEZIER" && channel.keyframeSource !== "SAMPLED") {
        throw new Error(`animations[${index}].channels[${channelIndex}].keyframeSource is invalid`);
      }
      if (channel.modifiers !== undefined) {
        const modifiers = requireArray(channel.modifiers, `animations[${index}].channels[${channelIndex}].modifiers`);
        if (modifiers.length > 64) throw new Error(`animations[${index}].channels[${channelIndex}].modifiers exceeds the budget`);
        for (const [modifierIndex, modifier] of modifiers.entries()) {
          if (!isRecord(modifier)) throw new Error(`animations[${index}].channels[${channelIndex}].modifiers[${modifierIndex}] must be an object`);
          requireString(modifier.name, `animations[${index}].channels[${channelIndex}].modifiers[${modifierIndex}].name`);
          requireString(modifier.type, `animations[${index}].channels[${channelIndex}].modifiers[${modifierIndex}].type`);
          for (const field of ["typeCode", "flags", "influence", "frameStart", "frameEnd", "blendIn", "blendOut"]) requireNumber(modifier[field], `animations[${index}].channels[${channelIndex}].modifiers[${modifierIndex}].${field}`);
          if (typeof modifier.expanded !== "boolean") throw new Error(`animations[${index}].channels[${channelIndex}].modifiers[${modifierIndex}].expanded is invalid`);
        }
      }
      const keyframes = requireArray(channel.keyframes, `animations[${index}].channels[${channelIndex}].keyframes`);
      for (const [keyframeIndex, keyframe] of keyframes.entries()) {
        if (!isRecord(keyframe)) throw new Error(`SceneIR.animations[${index}].channels[${channelIndex}].keyframes[${keyframeIndex}] must be an object`);
        requireNumber(keyframe.frame, `animations[${index}].channels[${channelIndex}].keyframes[${keyframeIndex}].frame`);
        const values = requireArray(keyframe.value, `animations[${index}].channels[${channelIndex}].keyframes[${keyframeIndex}].value`);
        if (values.some((item) => typeof item !== "number" || !Number.isFinite(item))) {
          throw new Error(`SceneIR.animations[${index}].channels[${channelIndex}].keyframes[${keyframeIndex}].value must contain finite numbers`);
        }
      }
    }
  }
  if (value.nlaTracks !== undefined) parseNlaTracks(value.nlaTracks);
  if (value.trackingMaskStatus !== undefined && !["AVAILABLE", "BLOCKED"].includes(value.trackingMaskStatus as string)) {
    throw new Error("SceneIR.trackingMaskStatus is invalid");
  }
  if (value.trackingMasks !== undefined) {
    parseTrackingMaskProject(value.trackingMasks);
    if (value.trackingMaskStatus !== "AVAILABLE") throw new Error("SceneIR.trackingMaskStatus must be AVAILABLE when trackingMasks is present");
  }
  if (value.libraryStatus !== undefined && !["AVAILABLE", "BLOCKED"].includes(value.libraryStatus as string)) {
    throw new Error("SceneIR.libraryStatus is invalid");
  }
  if (value.libraries !== undefined) {
    const libraries = value.libraries as unknown[];
    if (libraries.length > 0 && value.libraryStatus !== "AVAILABLE") throw new Error("SceneIR.libraryStatus must be AVAILABLE when libraries are present");
    if (libraries.length > 1024) throw new Error("SceneIR.libraries exceeds the budget");
    const libraryIds = new Set<string>();
    for (const [index, library] of libraries.entries()) {
      if (!isRecord(library)) throw new Error(`SceneIR.libraries[${index}] must be an object`);
      const id = requireString(library.id, `libraries[${index}].id`);
      if (!id || id.length > 256 || libraryIds.has(id)) throw new Error(`SceneIR.libraries[${index}].id is invalid`);
      libraryIds.add(id);
      requireString(library.name, `libraries[${index}].name`);
      const sourcePath = requireString(library.sourcePath, `libraries[${index}].sourcePath`);
      if (typeof library.packed !== "boolean" || library.readOnly !== true || !Array.isArray(library.dependencyIds) ||
          library.dependencyIds.length > 1024 || library.dependencyIds.some((dependency) => typeof dependency !== "string") ||
          new Set(library.dependencyIds).size !== library.dependencyIds.length ||
          !["PACKED", "EXTERNAL_REQUIRED"].includes(library.status as string)) {
        throw new Error(`SceneIR.libraries[${index}] is invalid`);
      }
      let projectPath = true;
      try { normalizeProjectAssetPath(sourcePath); } catch { projectPath = false; }
      if (!projectPath) {
        throw new Error(`SceneIR.libraries[${index}].sourcePath is outside the project`);
      }
      if (library.status === "PACKED" && (!library.packed || !Number.isSafeInteger(library.packedByteLength) || (library.packedByteLength as number) <= 0)) {
        throw new Error(`SceneIR.libraries[${index}] packed payload is invalid`);
      }
      if (library.status === "EXTERNAL_REQUIRED" && (library.packed || library.errorCode !== "LINKED_LIBRARY_RESOURCE_REQUIRED")) {
        throw new Error(`SceneIR.libraries[${index}] external resource state is invalid`);
      }
    }
    for (const [index, library] of libraries.entries()) {
      const dependencies = (library as Record<string, unknown>).dependencyIds as string[];
      if (dependencies.some((dependency) => !libraryIds.has(dependency))) throw new Error(`SceneIR.libraries[${index}] references a missing dependency`);
    }
    const byId = new Map(libraries.map((library) => {
      const record = library as Record<string, unknown>;
      return [record.id as string, record.dependencyIds as string[]] as const;
    }));
    const active = new Set<string>();
    const complete = new Set<string>();
    const visit = (id: string): void => {
      if (active.has(id)) throw new Error(`SceneIR.libraries dependency cycle includes ${id}`);
      if (complete.has(id)) return;
      active.add(id);
      for (const dependency of byId.get(id) ?? []) visit(dependency);
      active.delete(id);
      complete.add(id);
    };
    byId.forEach((_dependencies, id) => visit(id));
  }
  if (value.editorWorkflowStatus !== undefined && !["AVAILABLE", "BLOCKED"].includes(value.editorWorkflowStatus as string)) {
    throw new Error("SceneIR.editorWorkflowStatus is invalid");
  }
  if (value.editorWorkflow !== undefined) {
    parseEditorWorkflow(value.editorWorkflow);
    if (value.editorWorkflowStatus !== "AVAILABLE") throw new Error("SceneIR.editorWorkflowStatus must be AVAILABLE when editorWorkflow is present");
  }
  if (value.scriptSourceStatus !== undefined && !["AVAILABLE", "BLOCKED"].includes(value.scriptSourceStatus as string)) {
    throw new Error("SceneIR.scriptSourceStatus is invalid");
  }
  if (value.scriptSources !== undefined) {
    parseScriptSourceInventory(value.scriptSources);
    if (value.scriptSourceStatus !== "AVAILABLE") throw new Error("SceneIR.scriptSourceStatus must be AVAILABLE when scriptSources is present");
  }
  if (value.renderRoutingStatus !== undefined && !["AVAILABLE", "BLOCKED", "MISSING"].includes(value.renderRoutingStatus as string)) {
    throw new Error("SceneIR.renderRoutingStatus is invalid");
  }
  if (value.renderRouting !== undefined) {
    if (!isRecord(value.renderRouting) || value.renderRouting.schemaVersion !== 1 ||
        value.renderRouting.receiptId !== "workflow:render_capability_routing" ||
        !isRecord(value.renderRouting.source) || typeof value.renderRouting.source.sha256 !== "string" ||
        !isRecord(value.renderRouting.settings) || typeof value.renderRouting.settings.sha256 !== "string" ||
        !isRecord(value.renderRouting.build) || typeof value.renderRouting.build.version !== "string" ||
        typeof value.renderRouting.build.buildSha256 !== "string" || !Array.isArray(value.renderRouting.routes) ||
        !isRecord(value.renderRouting.recovery) || value.renderRouting.recovery.cancellation !== "OPEN_CANCELLED" ||
        value.renderRouting.recovery.deviceLoss !== "RELEASED") {
      throw new Error("SceneIR.renderRouting is invalid");
    }
    if (value.renderRoutingStatus !== "AVAILABLE") throw new Error("SceneIR.renderRoutingStatus must be AVAILABLE when renderRouting is present");
  }
  if (value.serverJobBindingStatus !== undefined && !["AVAILABLE", "BLOCKED", "MISSING"].includes(value.serverJobBindingStatus as string)) {
    throw new Error("SceneIR.serverJobBindingStatus is invalid");
  }
  if (value.serverJobBinding !== undefined) {
    const binding = value.serverJobBinding;
    if (!isRecord(binding) || binding.schemaVersion !== 1 || binding.receiptId !== "workflow:server_job_result_binding" ||
        !isRecord(binding.source) || typeof binding.source.sha256 !== "string" ||
        !isRecord(binding.settings) || typeof binding.settings.settingsSha256 !== "string" ||
        !isRecord(binding.build) || typeof binding.build.version !== "string" || typeof binding.build.buildSha256 !== "string" ||
        !isRecord(binding.request) || typeof binding.request.requestSha256 !== "string" ||
        !isRecord(binding.result) || binding.result.status !== "SUCCEEDED" || typeof binding.result.resultSha256 !== "string" ||
        !isRecord(binding.lifecycle) || binding.lifecycle.duplicate !== "REUSED" || binding.lifecycle.stale !== "BLOCKED" ||
        binding.lifecycle.cancel !== "CANCELLED" || binding.lifecycle.timeout !== "TIMEOUT" || binding.lifecycle.oom !== "OOM" ||
        binding.lifecycle.publishedOnFailure !== false) {
      throw new Error("SceneIR.serverJobBinding is invalid");
    }
    if (value.serverJobBindingStatus !== "AVAILABLE") throw new Error("SceneIR.serverJobBindingStatus must be AVAILABLE when serverJobBinding is present");
  }
  if (value.scriptingPolicyStatus !== undefined && !["AVAILABLE", "BLOCKED", "MISSING"].includes(value.scriptingPolicyStatus as string)) {
    throw new Error("SceneIR.scriptingPolicyStatus is invalid");
  }
  if (value.scriptingPolicy !== undefined) {
    const policy = value.scriptingPolicy;
    const defaults = isRecord(policy) ? policy.defaults : undefined;
    const scope = isRecord(policy) ? policy.scope : undefined;
    const sandbox = isRecord(policy) ? policy.sandbox : undefined;
    const audit = isRecord(policy) ? policy.audit : undefined;
    const boundaries = isRecord(policy) ? policy.boundaries : undefined;
    const budget = isRecord(policy) ? policy.budget : undefined;
    if (!isRecord(policy) || policy.schemaVersion !== 1 || policy.policyId !== "workflow:scripting_default_deny_audit" ||
        !isRecord(defaults) || defaults.autorun !== false || defaults.network !== false || defaults.addonInstall !== false ||
        defaults.driverExpressions !== false || defaults.module !== false || !isRecord(scope) || scope.dom !== false ||
        scope.hostWorker !== false || scope.opfs !== false || scope.indexedDB !== false || scope.network !== false ||
        !isRecord(sandbox) || sandbox.execution !== "DISABLED" || sandbox.cancellation !== "SCRIPT_SANDBOX_CANCELLED" ||
        sandbox.dispose !== "RELEASED" || sandbox.mainRevisionUnchanged !== true || sandbox.publishedResults !== 0 ||
        sandbox.temporaryBytes !== 0 || !isRecord(audit) || audit.decision !== "DENY" || audit.approvedKey !== false ||
        !["SCRIPT_SIGNATURE_INVALID", "SCRIPT_SANDBOX_UNAVAILABLE"].includes(audit.reason as string) ||
        !isRecord(boundaries) || boundaries.secretAccess !== "BLOCKED" || boundaries.filesystemEscape !== "BLOCKED" ||
        boundaries.network !== "BLOCKED" || !isRecord(budget) || !Number.isSafeInteger(budget.maxSourceBytes) ||
        (budget.maxSourceBytes as number) < 1 || !Number.isSafeInteger(budget.maxScripts) || (budget.maxScripts as number) < 1 ||
        !Number.isSafeInteger(budget.maxAuditEntries) || (budget.maxAuditEntries as number) < 1 ||
        typeof policy.policyHash !== "string" || !/^[a-f0-9]{64}$/u.test(policy.policyHash)) {
      throw new Error("SceneIR.scriptingPolicy is invalid");
    }
    if (value.scriptingPolicyStatus !== "AVAILABLE") throw new Error("SceneIR.scriptingPolicyStatus must be AVAILABLE when scriptingPolicy is present");
  }
  if (value.performanceFaultMatrixStatus !== undefined && !["AVAILABLE", "BLOCKED", "MISSING"].includes(value.performanceFaultMatrixStatus as string)) {
    throw new Error("SceneIR.performanceFaultMatrixStatus is invalid");
  }
  if (value.performanceFaultMatrix !== undefined) {
    const matrix = value.performanceFaultMatrix;
    const thresholds = isRecord(matrix) ? matrix.thresholds : undefined;
    const faults = isRecord(matrix) ? matrix.faults : undefined;
    const recovery = isRecord(matrix) ? matrix.recovery : undefined;
    const budget = isRecord(matrix) ? matrix.budget : undefined;
    const thresholdIds = new Set(Array.isArray(thresholds) ? thresholds.map((entry) => isRecord(entry) ? entry.id : undefined) : []);
    if (!isRecord(matrix) || matrix.schemaVersion !== 1 || matrix.receiptId !== "workflow:performance_fault_recovery_matrix" ||
        !Array.isArray(thresholds) || thresholds.length < 7 || thresholds.some((entry) => !isRecord(entry) || typeof entry.id !== "string" || entry.status !== "PASS" || !Number.isSafeInteger(entry.limit) || (entry.limit as number) < 1) ||
        !thresholdIds.has("geometry-100k") || !thresholdIds.has("geometry-1m") || !thresholdIds.has("geometry-10m") || !thresholdIds.has("texture-4k") || !thresholdIds.has("texture-8k") || !thresholdIds.has("long-media") || !thresholdIds.has("simulation-cache") ||
        !isRecord(faults) || Object.values(faults).some((fault) => !isRecord(fault) || fault.status !== "BLOCKED" || typeof fault.code !== "string" || fault.publishedResults !== 0) ||
        !isRecord(recovery) || recovery.oldRevisionUsable !== true || recovery.revisionBefore !== 1 || recovery.revisionAfter !== 1 || recovery.resourcesAfter !== 0 || recovery.cache !== "QUARANTINED" || recovery.workerRestart !== "RECOVERED" ||
        !isRecord(budget) || Object.values(budget).some((limit) => typeof limit !== "number" || !Number.isSafeInteger(limit) || limit < 1) ||
        typeof matrix.matrixHash !== "string" || !/^[a-f0-9]{64}$/u.test(matrix.matrixHash)) {
      throw new Error("SceneIR.performanceFaultMatrix is invalid");
    }
    if (value.performanceFaultMatrixStatus !== "AVAILABLE") throw new Error("SceneIR.performanceFaultMatrixStatus must be AVAILABLE when performanceFaultMatrix is present");
  }
  if (value.releaseCandidateStatus !== undefined && !["AVAILABLE", "BLOCKED", "MISSING"].includes(value.releaseCandidateStatus as string)) {
    throw new Error("SceneIR.releaseCandidateStatus is invalid");
  }
  if (value.releaseCandidate !== undefined) {
    const receipt = value.releaseCandidate;
    const ci = isRecord(receipt) ? receipt.ci : undefined;
    const gates = isRecord(receipt) ? receipt.gates : undefined;
    const archives = isRecord(receipt) ? receipt.archives : undefined;
    const binary = isRecord(archives) ? archives.binary : undefined;
    const source = isRecord(archives) ? archives.source : undefined;
    const sbom = isRecord(receipt) ? receipt.sbom : undefined;
    const rollback = isRecord(receipt) ? receipt.rollback : undefined;
    if (!isRecord(receipt) || receipt.schemaVersion !== 1 || receipt.receiptId !== "workflow:offline_ci_sbom_and_rollback_release" ||
        typeof receipt.releaseId !== "string" || !isRecord(ci) || !isRecord(ci.quick) || ci.quick.status !== "READY" ||
        typeof ci.quick.reportSha256 !== "string" || !/^[a-f0-9]{64}$/u.test(ci.quick.reportSha256) || !isRecord(gates) ||
        !isRecord(gates.offlineReproducibility) || gates.offlineReproducibility.status !== "READY" || !isRecord(gates.sbom) ||
        gates.sbom.status !== "READY" || !isRecord(gates.rollback) || gates.rollback.status !== "READY" || !isRecord(binary) ||
        !Number.isSafeInteger(binary.bytes) || (binary.bytes as number) < 1 || typeof binary.sha256 !== "string" || !/^[a-f0-9]{64}$/u.test(binary.sha256) ||
        !isRecord(source) || !Number.isSafeInteger(source.bytes) || (source.bytes as number) < 1 || typeof source.sha256 !== "string" || !/^[a-f0-9]{64}$/u.test(source.sha256) ||
        !isRecord(sbom) || typeof sbom.sha256 !== "string" || !/^[a-f0-9]{64}$/u.test(sbom.sha256) || !isRecord(rollback) ||
        typeof rollback.runbookSha256 !== "string" || !/^[a-f0-9]{64}$/u.test(rollback.runbookSha256)) {
      throw new Error("SceneIR.releaseCandidate is invalid");
    }
    if (value.releaseCandidateStatus !== "AVAILABLE") throw new Error("SceneIR.releaseCandidateStatus must be AVAILABLE when releaseCandidate is present");
  }
  if (value.gapInventoryStatus !== undefined && !["AVAILABLE", "BLOCKED", "MISSING"].includes(value.gapInventoryStatus as string)) {
    throw new Error("SceneIR.gapInventoryStatus is invalid");
  }
  if (value.gapInventory !== undefined) {
    const inventory = value.gapInventory;
    const source = isRecord(inventory) ? inventory.inventorySource : undefined;
    const policy = isRecord(inventory) ? inventory.classificationPolicy : undefined;
    const summary = isRecord(inventory) ? inventory.summary : undefined;
    const clusters = isRecord(inventory) ? inventory.clusters : undefined;
    if (!isRecord(inventory) || inventory.schemaVersion !== 1 || inventory.receiptId !== "workflow:cluster_full_blender_gap_inventory" ||
        inventory.runtime !== "BLENDER_5_2_INVENTORY" || !isRecord(source) || typeof source.path !== "string" ||
        typeof source.sha256 !== "string" || !/^[a-f0-9]{64}$/u.test(source.sha256) || source.entryCount !== 6900 ||
        !isRecord(policy) || policy.unprovenClass !== "METADATA_ONLY" || policy.parityLevel !== "L0" ||
        !Array.isArray(policy.featureParityRequires) || policy.featureParityRequires.length !== 3 ||
        !Array.isArray(policy.negativeOnlyClasses) || !Array.isArray(clusters) || clusters.length !== 15 ||
        !isRecord(summary) || summary.inventoryEntries !== 6900 || summary.clusterCount !== 15 || summary.unknownEntries !== 0 ||
        summary.webGapEntries !== 6900 || summary.currentParityClaims !== 0 || summary.currentParityLevel !== "L0" ||
        !Array.isArray(inventory.riskRanking) || inventory.riskRanking.length !== 15 || inventory.nextTask !== "WBV2-P7-002") {
      throw new Error("SceneIR.gapInventory is invalid");
    }
    const seen = new Set<string>();
    for (const cluster of clusters) {
      if (!isRecord(cluster) || typeof cluster.capabilityId !== "string" || seen.has(cluster.capabilityId) ||
          !Number.isSafeInteger(cluster.entryCount) || (cluster.entryCount as number) < 1 ||
          cluster.currentParityLevel !== "L0" || cluster.completionClass !== "METADATA_ONLY" ||
          cluster.evidenceStatus !== "NOT_RUN" || cluster.webStatus !== "GAP" ||
          !Number.isSafeInteger(cluster.riskScore) || !Array.isArray(cluster.representativeIds) || cluster.representativeIds.length < 1) {
        throw new Error("SceneIR.gapInventory cluster is invalid");
      }
      seen.add(cluster.capabilityId);
    }
    if (seen.size !== inventory.riskRanking.length || inventory.riskRanking.some((id) => typeof id !== "string" || !seen.has(id))) {
      throw new Error("SceneIR.gapInventory risk ranking is invalid");
    }
    if (value.gapInventoryStatus !== "AVAILABLE") throw new Error("SceneIR.gapInventoryStatus must be AVAILABLE when gapInventory is present");
  }
  if (value.atomicGapQueueStatus !== undefined && !["AVAILABLE", "BLOCKED", "MISSING"].includes(value.atomicGapQueueStatus as string)) {
    throw new Error("SceneIR.atomicGapQueueStatus is invalid");
  }
  if (value.atomicGapQueue !== undefined) {
    const queue = value.atomicGapQueue;
    const parent = isRecord(queue) ? queue.parent : undefined;
    const details = isRecord(queue) ? queue.queue : undefined;
    const tasks = isRecord(queue) ? queue.tasks : undefined;
    if (!isRecord(queue) || queue.schemaVersion !== 1 || queue.receiptId !== "workflow:generate_atomic_family_gap_queue" ||
        queue.runtime !== "BLENDER_5_2_INVENTORY" || !isRecord(parent) || parent.task !== "WBV2-P7-001" ||
        typeof parent.manifestPath !== "string" || typeof parent.receiptPath !== "string" ||
        typeof parent.manifestSha256 !== "string" || !/^[a-f0-9]{64}$/u.test(parent.manifestSha256) ||
        typeof parent.receiptSha256 !== "string" || !/^[a-f0-9]{64}$/u.test(parent.receiptSha256) ||
        !isRecord(details) || details.activeCount !== 1 || details.plannedCount !== 44 ||
        typeof details.activeTaskId !== "string" || !Array.isArray(details.behaviors) || details.behaviors.length !== 3 ||
        !Array.isArray(details.implementationClasses) || details.implementationClasses.length !== 1 ||
        details.implementationClasses[0] !== "LOCAL_BOUNDED" || !Array.isArray(tasks) || tasks.length !== 45 ||
        queue.nextTask !== "WBV2-P7-003") {
      throw new Error("SceneIR.atomicGapQueue is invalid");
    }
    const ids = new Set<string>();
    for (const [index, task] of tasks.entries()) {
      if (!isRecord(task) || typeof task.id !== "string" || ids.has(task.id) ||
          typeof task.parityId !== "string" || task.parityId !== task.capabilityId ||
          task.implementationClass !== "LOCAL_BOUNDED" || task.parentTask !== "WBV2-P7-001" ||
          typeof task.parentReceiptSha256 !== "string" || !/^[a-f0-9]{64}$/u.test(task.parentReceiptSha256) ||
          task.state !== (index === 0 ? "active" : "pending") || task.ready !== (index === 0)) {
        throw new Error("SceneIR.atomicGapQueue task is invalid");
      }
      ids.add(task.id);
    }
    if (details.activeTaskId !== tasks[0].id || value.atomicGapQueueStatus !== "AVAILABLE") {
      throw new Error("SceneIR.atomicGapQueueStatus must be AVAILABLE for a valid queue");
    }
  }
  if (value.parityReleaseGateStatus !== undefined && !["AVAILABLE", "BLOCKED", "MISSING"].includes(value.parityReleaseGateStatus as string)) {
    throw new Error("SceneIR.parityReleaseGateStatus is invalid");
  }
  if (value.parityReleaseGate !== undefined) {
    const gate = value.parityReleaseGate;
    const closure = isRecord(gate) ? gate.parityClosure : undefined;
    const evidence = isRecord(gate) ? gate.evidenceHealth : undefined;
    const recovery = isRecord(gate) ? gate.recoveryHealth : undefined;
    const decision = isRecord(gate) ? gate.releaseDecision : undefined;
    if (!isRecord(gate) || gate.schemaVersion !== 1 || gate.receiptId !== "workflow:full_parity_candidate_release_gate" ||
        gate.runtime !== "BLENDER_DESKTOP_WASM_MAIN" || !isRecord(gate.inputs) || Object.keys(gate.inputs).length !== 4 ||
        Object.values(gate.inputs).some((input) => !isRecord(input) || typeof input.path !== "string" || typeof input.sha256 !== "string" || !/^[a-f0-9]{64}$/u.test(input.sha256)) ||
        !isRecord(closure) || closure.status !== "BLOCKED" || closure.inventoryEntries !== 6900 || closure.clusterCount !== 15 ||
        closure.atomicTaskCount !== 45 || closure.currentParityLevel !== "L0" || closure.featureParityClaims !== 0 ||
        !Array.isArray(closure.reasonCodes) || closure.reasonCodes.length < 1 || !isRecord(evidence) || evidence.status !== "BLOCKED" ||
        evidence.historicalEvidencePreserved !== true || evidence.m12ProvenanceState !== "BLOCKED_SOURCE_LOST" ||
        !Number.isSafeInteger(evidence.m12Entries) || (evidence.m12Entries as number) < 1 || !Array.isArray(evidence.reasonCodes) || evidence.reasonCodes.length < 1 ||
        !isRecord(recovery) || recovery.status !== "READY" || recovery.quickCi !== "READY" || recovery.inventorySaveReopen !== "EXACT" ||
        recovery.queueSaveReopen !== "EXACT" || recovery.malformedBlend !== "REJECTED_WITHOUT_MAIN_MUTATION" || !isRecord(decision) ||
        decision.status !== "BLOCKED" || decision.nextTask !== null || !Array.isArray(decision.reasonCodes) || decision.reasonCodes.length < 1) {
      throw new Error("SceneIR.parityReleaseGate is invalid");
    }
    if (value.parityReleaseGateStatus !== "AVAILABLE") throw new Error("SceneIR.parityReleaseGateStatus must be AVAILABLE when parityReleaseGate is present");
  }
  if (value.physicsSimulation !== undefined) parsePhysicsSimulationManifest(value.physicsSimulation);
  if (value.geometryNodeGraphs !== undefined) {
    const graphs = requireArray(value.geometryNodeGraphs, "geometryNodeGraphs");
    if (graphs.length > GEOMETRY_NODE_GRAPH_BUDGET.maxGraphs) throw new Error("SceneIR.geometryNodeGraphs exceeds the graph budget");
    const graphIds = new Set<string>();
    for (const [index, graph] of graphs.entries()) {
      const parsed = parseGeometryNodeGraph(graph);
      if (!graphIds.add(parsed.id)) throw new Error(`SceneIR.geometryNodeGraphs[${index}] has a duplicate graph ID`);
    }
  }
  return value as unknown as SceneSnapshotIR;
}