chore(agents): add three new specialist agents
/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>
Hartmut
9c6ae18b28