Two issues surfaced testing the baked viewer:
- Folding door folded toward +z (into the room) — the joint rotation sign
was inverted, so the accordion opened the wrong way ("weird position").
Flip to `(prevDirection - direction) * foldAngle` so leaves fold toward
−z, matching the original inline rig. Verified panel-for-panel against the
original formula at every operationState.
- Openable clips were named by display name (`<name>: open`), but the baked
viewer drives playback by clip name (`useAnimations` maps name → action).
Several windows share the name "Window 1", so their clips collapsed to one
action and triggering any one opened the first. Key the clip name by node
id (`<id>: open`) — unique, matching the item-loop convention; the
human-readable name still lives in `extras.label`.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
