API, MCP, CLI et SDK
REST:GET /api/v1/avatars/capability, POST /api/v1/avatars/uploads, POST /api/v1/avatars, GET /api/v1/avatars, GET /api/v1/avatars/{id}, DELETE /api/v1/avatars/{id}, GET /api/v1/avatars/catalog.
MCP: get_avatar_capability, create_avatar_upload, submit_avatar, list_avatars, get_avatar, delete_avatar, list_avatar_catalog.