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/workflow/editor/toggle-expand-btn.tsx

@@ -4,7 +4,7 @@ import React, { useCallback } from 'react'
 import Expand04 from '@/app/components/base/icons/solid/expand-04'
 import Collapse04 from '@/app/components/base/icons/line/arrows/collapse-04'
 
-type Props = {
+interface Props {
   isExpand: boolean
   onExpandChange: (isExpand: boolean) => void
 }