Canonical Perastage hoist metadata in MVR

The MVR 1.6 extension point is GeneralSceneDescription/UserData. Support does not permit a direct UserData child in the official schema. Perastage therefore writes hoist metadata only in a root map:

<GeneralSceneDescription ...>
  <UserData>
    <Data provider="Perastage" ver="1.0">
      <HoistInfoMap>
        <HoistInfo uuid="canonical-support-uuid">...</HoistInfo>
      </HoistInfoMap>
    </Data>
  </UserData>
  <Scene>...</Scene>
</GeneralSceneDescription>

The UUID is the canonical exported Support identity. Perastage Data version 1.0 is preferred over legacy object metadata; foreign-provider Data blocks are not interpreted as Perastage metadata.

Fields

HoistInfo can contain Capacity, Weight, a manually overridden Load, RiggingPoint, MotorName, MotorManufacturer, MotorModel, MotorFixtureUuid, UseMotorDefaults, DummyProfileId, the compatibility DummyPreset, ValueSource, and field-level source elements such as MotorNameSource and CapacitySource. Optional absent values retain their standard or model defaults.

Function and DataSource remain compatibility aliases for RiggingPoint and ValueSource respectively.

Legacy input

The importer tolerates Support/UserData/Data/HoistInfo and Support/UserData/Data/MotorInfo. Canonical supported root metadata takes precedence when both shapes exist. A subsequent export migrates accepted legacy values into HoistInfoMap and never emits direct Support UserData. Direct legacy Data is read only for a case-insensitive Perastage provider. Version 1.0 is supported; a missing direct-object version is tolerated with a diagnostic, while foreign providers and non-empty unsupported versions are ignored.

Duplicate canonical entries use the first valid UUID match deterministically; later duplicates are diagnosed and ignored. Invalid or non-finite numeric tokens do not replace existing standard values. Malformed, unknown, or ambiguous MotorFixtureUuid values are never resolved by display name. Valid links are canonicalized and resolved only against imported Fixture UUIDs; malformed and unknown links are diagnosed and left unset. Perastage root Data with a schema version other than 1.0 is diagnosed and ignored. Foreign-provider Data is outside this policy and is not interpreted.

GeneralSceneDescription@providerVersion identifies the application build; Data@ver independently identifies the Perastage extension schema.