polish: deduplicate model+cape stuff and fix layout

packages/utils/package.json

@@ -20,10 +20,12 @@
     "@codemirror/state": "^6.3.2",
     "@codemirror/view": "^6.22.1",
     "@types/markdown-it": "^14.1.1",
+    "@types/three": "^0.172.0",
     "dayjs": "^1.11.10",
     "highlight.js": "^11.9.0",
     "markdown-it": "^14.1.0",
     "ofetch": "^1.3.4",
+    "three": "^0.172.0",
     "xss": "^1.0.14"
   }
 }