* feat(editor): preset placement polish — params, move tool, shadows
- wall/slab/ceiling/roof create paths consume `toolDefaults` so template
presets build with their saved params; cleared on tool unmount
- wall draw preview reflects the preset's height/thickness (+ HUD labels)
- box-select picks up registry-selectable kinds (shelf) via bbox
- registry + column move tools: snap to the active grid step, R/T rotation,
and ignore the stray trailing click that armed the move (no double-place)
- shelf geometry casts + receives shadows like fence/slab
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
* feat(viewer): expose isIsolationActive() for isolation-aware consumers
Tracks whether an isolation filter is currently applied and exposes it so
hosts can avoid acting on the partial view — e.g. skipping project-thumbnail
autosave while a single subtree is isolated (preset capture).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
