feat(api): implement product caching mechanism

- Add NODE_ENV=production to .env for environment configuration
- Enhance product API route with JSON cache manager for local storage and retrieval
- Introduce cache-only mode and detailed logging for better performance and offline support
- Update UI to display cache status and storage statistics

package.json

@@ -19,6 +19,7 @@
     "@radix-ui/react-checkbox": "^1.3.3",
     "@radix-ui/react-dialog": "^1.1.2",
     "@radix-ui/react-dropdown-menu": "^2.1.2",
+    "@radix-ui/react-label": "^2.1.7",
     "@radix-ui/react-radio-group": "^1.3.8",
     "@radix-ui/react-select": "^2.1.2",
     "@radix-ui/react-separator": "^1.1.7",