chore(lint): remove ESLint configuration file and update lint scripts

- Deleted the .eslintrc.cjs file to simplify configuration management.
- Updated lint scripts in package.json to remove unnecessary extensions for linting.
- Added new devDependencies for ESLint and globals to enhance linting capabilities.

src/components/layout/Sidebar.tsx

@@ -69,7 +69,7 @@ export function Sidebar() {
   const gatewayStatus = useGatewayStore((state) => state.status);
   
   const [versionClicks, setVersionClicks] = useState(0);
-  const [appVersion, setAppVersion] = useState('0.1.0');
+  const [, setAppVersion] = useState('0.1.0');
   
   // Get app version
   useEffect(() => {
@@ -79,7 +79,7 @@ export function Sidebar() {
   }, []);
   
   // Handle version click for dev mode unlock
-  const handleVersionClick = () => {
+  const _handleVersionClick = () => {
     const clicks = versionClicks + 1;
     setVersionClicks(clicks);