Discovery and capabilities

Three independent checks protect an optional PAPER feature:

1. Table extent: the function pointer exists in this provider build.
2. Provider feature: the provider advertises that family.
3. Granted capability: this owner may call it.

The descriptor-first PaperApi::initialize checks version and extent. Named supports…V1 helpers cover animation evidence/telemetry, reload stages, native pose, motion catalog/diagnostics/manipulation, and development capture.

Capability map

Capability	Purpose
RuntimeState	Runtime/configuration snapshots.
CapturedTransforms	Native animation node capture.
NativeHandPose	Hand-in-weapon and 15 finger-local transforms.
AnimationAuthority	Animation ownership arbitration.
FrameCallbacks	Event callback registration.
ReloadObservations	Reload catalogs and frame observations.
ReloadEvidenceGeometry	Evidence point clouds.
ReloadAnimationEvidence	Passive data plus exact evidence demand.
ReloadAnimationTelemetry	Passive/live animation data only.
ReloadStageIdentification	Aggregate/per-part semantic stages.
NativePosePipeline	Resolved pose diagnostics.
WeaponMotionCatalog	Parts, stages, path keys and followers.
WeaponMotionDiagnostics	Learning and compiled-store diagnostics.
WeaponManipulationTelemetry	Per-hand path projection.
DevelopmentCaptureControl	Bounded development activation leases.

Do not request All. ReloadAnimationTelemetry is intentionally distinct from ReloadAnimationEvidence: telemetry must never start exact off-screen preharvest, while evidence can express that demand when the user's policy allows it.

Registration returns the actual granted mask. Treat missing required bits as a failed integration, unregister the partial owner, and report which feature is unavailable.