Render the exploded mission model during the repairing step so broken
nodes (e.g. ebike refroidisseur) stay visible in the world, and surface
their world positions to RepairRepairingStep so broken pieces spawn
from where they belong on the model rather than from a static offset.
- ExplodableModel: add hideNodeNames (mesh visibility off, restored on
unmount) and nodeAnchorNames + onNodeAnchorsChange (per-frame world
positions debounced via signature so React state updates only when
the values actually move).
- RepairGame: render ExplodableModel during 'repairing' with the broken
node names hidden + anchors forwarded; threads brokenAnchors state
to RepairRepairingStep.
- RepairScanSequence + RepairRepairingStep: propagate targetNodeName
through scanned and fallback broken-part lists.
- RepairRepairingStep: broken parts spawn at brokenAnchors[targetNodeName]
when set, falling back to legacy BROKEN_PART_START_OFFSETS otherwise.
- Ebike replacement parts: cooling core (correct, anchored at refroidisseur)
+ four distractors anchored at cabledroit/cablegauche/pucehaut/pucebas.
Removes the ad-hoc gant_l/talkie distractors in favor of consistent
case-anchored visuals.
- Pylon replacement parts: cable1 + cable2 (alternative correct, both with
caseLockGroup 'pylon-cable' for upcoming soft-lock) + refroidisseur and
two puce distractors anchored to packderelance.
- Farm replacement parts kept as-is (caseAnchor undefined falls back to
placeholder slot positions for backward compatibility).
- RepairGame threads anchors from RepairCaseModel through RepairMissionCase
to RepairRepairingStep; replacement-part initial position now resolves
to the anchor world position when caseAnchor is set, falling back to the
legacy slot index otherwise.