fix(doors): bake open-animation clips for every operation door + un-flipped rest pose

[wass08]

What

Bake an open-animation clip into the GLB for every openable/slideable door driven by the edition panel — not just hinged/swing doors. Previously sliding, pocket, barn, folding, and all garage doors baked their operationState straight into mesh vertices at build time, so the exported GLB had no re-poseable node and no open clip.

How

Gives operation doors the same build-once + pose-at-t split the windows already use:

• Each builder in door-system.tsx emits its moving parts in a named group at the closed pose.
• A new exported poseDoorMovingParts(node, mesh, t) is the single source of truth for the open motion — the live system poses after each rebuild, and the GLB exporter poses a clone to sample keyframes.
• glb-export.ts bakeDoorClip dispatches operation types to bakeOperationDoorClip (samples 16 segments → position/quaternion/scale tracks for any moving group; resets closed) vs the renamed bakeSwingDoorClip.

Per-type rigs: sliding/pocket/barn = leaf translate; garage-tiltup = rigid hinge about the lintel; folding = nested-group accordion chain; garage-sectional = per-panel groups along the overhead curve. garage-rollup is the one exception — its slats genuinely vanish onto a drum (not expressible as a glTF clip), so it keeps its live rebuild and the exporter scales a top-pivoted curtain group as the agreed approximation.

Follow-up fixes folded in

• Folding fold direction was inverted (+z into the room) — corrected to fold −z, parity-tested panel-for-panel.
• Open-clip names were ${node.name}: open, so multiple same-named windows/doors collided (the baked viewer keys useAnimations by clip name) — now ${id}: open (unique; display name stays in extras.label).
• Un-flipped rest pose (last commit): a folding door saved open baked a 180°-flipped rest. The export clones + decomposes the door matrix, which re-derives a gimbal-flipped euler (x=z=π) for any rotation beyond ±90° (folding reaches ~158°); the pose reset only zeroed .y, leaving the π residue. Fixed by setting the full euler triple in every pose branch.

Tests

• door-animation.test.ts — per-type kinematics.
• glb-export.test.ts — sliding (sampled position) + rollup (sampled scale) clips, and a regression asserting an identity rest pose for an open folding door.

Validation

Baked a real project end-to-end locally (headless worker → served lod0.glb): all door-fold panels rest at identity [0,0,0,1] with the open clip targeting every panel; sliding/pocket/barn/folding clips present with correct group targets.

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Note

Medium Risk
Touches door mesh construction, GLB animation baking, and live posing for many door types; regressions could show wrong rest poses or broken open clips in exported GLBs.

Overview
Operation doors (sliding, pocket, barn, folding, garage types) now follow the same build closed + pose at t pattern as windows: moving parts live in named groups, poseDoorMovingParts drives live state and GLB sampling, and bakeOperationDoorClip writes sampled position/rotation/scale tracks (rollup uses a scale approximation; live rollup still rebuilds slats).

Open clip names change from ${node.name}: open to ${id}: open so duplicate display names do not collide in baked useAnimations playback; labels stay in extras.label.

Folding doors are refactored to a nested panel chain with a full euler reset so export no longer bakes a 180°-flipped rest when saved open. Walkthrough mode applies shared WALKTHROUGH_FOV (60°) in both walkthrough controllers.

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