Lane A: bone-alias layer so CC_Base_*/Unreal-HumanIK/Rigify/Rokoko/Biped rigs
fold onto the canonical mixamo names — lady.glb pairs 52/102 bones and
retargets (53 tracks) where she previously threw 'missing hips'; mixamo→mixamo
pairing asserted bit-identical. Backdrops gain frustum auto-fit, floor tint
sampled from the plate, and FogExp2 in the plate's colour via a keyable
param. Also caught: _buildLight ran _refreshDefaults before registration, so
scene lights never dimmed the built-in hemi (every preset was washed out).
Orchestrator SYNC-7 fixes (found only by rendering actual frames):
- editor chrome (gizmo/grid/helpers/cam proxies) was baked into output mp4s
- timeline's per-tick rest transform dragged fitted plates out of frame
- fit used the viewport aspect, output renders at its own → letterboxed plates
- plate offset put its top edge on the lens axis → void above centre-frame;
now params.fitAnchor (default 0.75) picks the row that sits at eye level
Verified: 5 suites green; 1280x720 render shows a CC character dancing a mixamo
clip against an edge-to-edge Flow plate with a horizon and matched ground.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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