feat: improve thumbnails, placement, and editor responsiveness (#258)

* wip: backport monorepo PRs 278 280 281 283 284

* refactor(editor): align floorplan panel with monorepo split version

packages/viewer/package.json

@@ -26,7 +26,7 @@
     "@react-three/drei": "^10",
     "@react-three/fiber": "^9",
     "react": "^18 || ^19",
-    "three": "^0.183"
+    "three": "^0.184"
   },
   "dependencies": {
     "polygon-clipping": "^0.15.7",
@@ -36,7 +36,7 @@
     "@pascal/typescript-config": "*",
     "@types/node": "^25.5.0",
     "@types/react": "^19.2.2",
-    "@types/three": "^0.183.0",
+    "@types/three": "^0.184.0",
     "typescript": "5.9.3"
   },
   "keywords": [