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/usd-export — USD authoring specialist - Full pxr API reference (Stage, Mesh, Primvars, MaterialBinding, Override layers) - XCAF traversal pattern for partKey generation - Coordinate system (OCC Z-up mm → USD Y-up mm, no scaling needed) - FlattenLayerStack delivery pattern - Test commands + common errors table - Failure protocol linking to /plan /render-pipeline — Render script chain specialist - Full script chain (export_step_to_gltf → export_gltf → still_render → turntable_render) - GPU activation 6-step order (critical, open_mainfile resets compute_device_type) - AF suffix stripping for material matching - GLB extras round-trip documentation - GCPnts_UniformAbscissa requirement (Polygon3D_s returns None in XCAF) - Parameter propagation rule (admin.py → export_glb.py → script → Blender) - Direct subprocess test commands /tenant-audit — RLS correctness specialist - HTTP + Celery layer audit steps - Live cross-tenant leak test pattern (SET LOCAL + count comparison) - Fix patterns for middleware and task-side set_tenant_context - Role permission matrix - Tables requiring RLS policies Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>