Upgrade ESLint to v10 and align lint config with supported plugins

[Copilot]

This updates the repository’s linting stack to ESLint v10 and removes config paths that are incompatible with the current plugin ecosystem. The change keeps lint behavior consistent while unblocking the major-version upgrade.

• Dependency updates

  • Upgraded eslint to ^10.2.1
  • Upgraded @eslint/js to ^10.0.1
  • Removed eslint-plugin-import from devDependencies (current release does not declare ESLint v10 support)

• ESLint config alignment

  • Removed eslint-plugin-import extends from eslint.config.js:
    • plugin:import/errors
    • plugin:import/typescript
  • Kept the existing flat-config/compat structure and TypeScript/Jest linting setup intact

• Resulting config delta

  extends: [
    'eslint:recommended',
    'plugin:@typescript-eslint/eslint-recommended',
    'plugin:@typescript-eslint/recommended',
    'plugin:jest/recommended',
  ]