* 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> --------- Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>