refactor(gui): Switch to retroUI

apps/gui/package.json

@@ -18,18 +18,27 @@
     "@omnia/memory": "workspace:*",
     "@omnia/scenario": "workspace:*",
     "@omnia/spatial": "workspace:*",
+    "@radix-ui/react-slot": "^1.3.0",
+    "class-variance-authority": "^0.7.1",
+    "clsx": "^2.1.1",
     "dotenv": "^17.4.2",
+    "lucide-react": "^1.24.0",
     "next": "^16.2.10",
+    "radix-ui": "^1.6.2",
     "react": "^19.2.0",
-    "react-dom": "^19.2.0"
+    "react-dom": "^19.2.0",
+    "tailwind-merge": "^3.6.0",
+    "tailwindcss-animate": "^1.0.7"
   },
   "devDependencies": {
+    "@tailwindcss/postcss": "^4.3.2",
     "@types/node": "^26.1.0",
     "@types/react": "^19.2.0",
     "@types/react-dom": "^19.2.0",
     "autoprefixer": "^10.5.2",
     "postcss": "^8.5.16",
-    "tailwindcss": "^3.4.19",
+    "shadcn": "^4.13.0",
+    "tailwindcss": "^4.3.2",
     "typescript": "^6.0.3"
   }
 }