chore: Remove unused dependencies and clean up imports

- Removed lucide-react and next-themes from package dependencies
- Simplified import in workbench store for path and file-saver
- Removed unnecessary module definition in Vite config

package.json

@@ -104,9 +104,7 @@
     "js-cookie": "^3.0.5",
     "jspdf": "^2.5.2",
     "jszip": "^3.10.1",
-    "lucide-react": "^0.474.0",
     "nanostores": "^0.10.3",
-    "next-themes": "^0.4.4",
     "ollama-ai-provider": "^0.15.2",
     "path-browserify": "^1.0.1",
     "react": "^18.3.1",