editor: green/red placement box for shelf + tool sync for presets (#366)

* feat(editor): shelf placement validity box + sync tool for positioned presets

Give the generic move tool a green/red footprint box for shelf placement,
matching the GLB item cursor, and drop the vertical-arrow CursorSphere for
shelves. Box colour comes from canPlaceOnFloor; an invalid (red) drop is
refused unless Shift forces it, and R/T play the rotate sfx. Re-sync the box
transform on node change so a re-armed clone isn't left at the previous
rotation/position.

Extract the box wireframe geometry helpers into a shared
placement-box-geometry module reused by the item coordinator and the new
declarative PlacementBox component. Export the Tool type so host apps can set
the active tool for a positioned preset.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

* chore: apply biome formatting + ignore generated next-env.d.ts

Format files that predate the current biome config (lineWidth 100, single
quotes, semicolons as-needed) so they stop showing as dirty on every checkout.
Formatting only — no behavior change.

Also exclude **/next-env.d.ts from biome: Next regenerates it (double quotes +
semicolon) on every build, so biome kept reformatting it into a perpetual dirty
diff. Ignoring it lets Next own the file.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

---------

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

packages/nodes/src/dormer/renderer.tsx

@@ -169,13 +169,7 @@ const DormerRenderer = ({ node: storeNode }: { node: DormerNode }) => {
         ref={ref}
         rotation-y={node.rotation ?? 0}
       >
-        <mesh
-          castShadow
-          geometry={geometry}
-          material={material}
-          name="dormer-body"
-          receiveShadow
-        />
+        <mesh castShadow geometry={geometry} material={material} name="dormer-body" receiveShadow />
         <DormerWindowAssembly
           frameMaterial={frameSideMat}
           glassMaterial={glassMat}

packages/nodes/src/dormer/window-assembly.tsx

@@ -140,11 +140,7 @@ const DormerWindowAssembly = ({
   // the sill always extrudes along the group's local +Z, so its position
   // no longer needs to flip per-face.
   const renderFace = (zPos: number, yRot: number, keyPrefix: string) => (
-    <group
-      name={`dormer-window-${keyPrefix}`}
-      position={[winX, winY, zPos]}
-      rotation-y={yRot}
-    >
+    <group name={`dormer-window-${keyPrefix}`} position={[winX, winY, zPos]} rotation-y={yRot}>
       {winGeo.glassPanes.map((pane, i) => (
         <mesh
           geometry={pane.geo}