fix(nodes): recreate door draft on wall:move when null after placement

Mirror of the window fix one commit back: after click-to-place the
DoorTool deletes its transient draft and relies on the wall-rebuild \u2192
R3F pointer-enter cascade to spawn a fresh draft for the next placement.
When that cascade doesn't fire synchronously, the next wall:move sees a
null draftRef and bails \u2014 forcing a leave/re-enter to place again.

Recreate the draft in onWallMove when null and over a valid wall on the
current level. Idempotent with onWallEnter (destroyDraft cleans up if
both fire).

Author: open-pascal

packages/nodes/src/door/tool.tsx

@@ -172,6 +172,26 @@ const DoorTool: React.FC = () => {
 
       const { clampedX, clampedY } = clampToWall(event.node, localX, width, height)
 
+      // Draft may be null after a successful placement (the click handler
+      // deletes it and relies on the wall rebuild → pointer-enter cascade to
+      // recreate it). Recreate it here on the first subsequent move so the
+      // preview is ready for the next click without requiring a leave/enter.
+      if (!draftRef.current) {
+        const levelId = getLevelId()
+        if (levelId && event.node.parentId === levelId) {
+          const node = DoorNode.parse({
+            position: [clampedX, clampedY, 0],
+            rotation: [0, itemRotation, 0],
+            side,
+            wallId: event.node.id,
+            parentId: event.node.id,
+            metadata: { isTransient: true },
+          })
+          useScene.getState().createNode(node, event.node.id as AnyNodeId)
+          draftRef.current = node
+        }
+      }
+
       if (draftRef.current) {
         // Update the scene store on every move so the 2D floor plan
         // stays in sync (it re-renders from `node.position`). Only