feat: migrate ESLint to v9 flat config

- Replace .eslintrc.json with eslint.config.mjs
- Simplify configuration using @antfu/eslint-config
- Add necessary ESLint plugin dependencies
- Disable overly strict style rules
- Set package.json type to module for ESM support
- Fix ESLint disable comment format

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

app/components/base/icons/other/ReplayLine.tsx

@@ -11,7 +11,7 @@ const Icon = (
     ref,
     ...props
   }: React.SVGProps<SVGSVGElement> & {
-    ref?: React.RefObject<React.MutableRefObject<HTMLOrSVGElement>>;
+    ref?: React.RefObject<React.MutableRefObject<HTMLOrSVGElement>>
   },
 ) => <IconBase {...props} ref={ref} data={data as IconData} />