sync: comprehensive monorepo → editor parity (2D/3D decoupling, UX polish, crash fixes)

Squash merge of 3 commits:
1. useLiveTransforms store for 2D/3D decoupling + floorplan overhaul + Sentry crash fixes
2. Comprehensive 59-file sync bringing editor to full monorepo parity (selection highlights, delete tool, furnish/zone modes, keyboard shortcuts, all panels)
3. Missing files fix (materials.ts, merged-outline-node.ts, type fix)

75 files changed, ~6K additions.

packages/viewer/src/components/renderers/wall/wall-renderer.tsx

@@ -23,7 +23,7 @@ export const WallRenderer = ({ node }: { node: WallNode }) => {
   }, [node.material, node.material?.preset, node.material?.properties, node.material?.texture])
 
   return (
-    <mesh castShadow receiveShadow ref={ref} visible={node.visible} material={material}>
+    <mesh castShadow material={material} receiveShadow ref={ref} visible={node.visible}>
       <boxGeometry args={[0, 0, 0]} />
       <mesh name="collision-mesh" visible={false} {...handlers}>
         <boxGeometry args={[0, 0, 0]} />