Deprecated — Protected asset list and create endpoints

GET /protected-assets and POST /protected-asset are now marked deprecated. Their behavior does not change, and existing integrations continue to work.

GET /protected-assets returns owned and associated assets together, and it cannot filter on type. To list one type, use GET /v2/assets with asset_type. To create an asset of a chosen type, use POST /v2/assets.

DELETE /protected-asset/{id} is not deprecated. It continues to delete assets of both types.