feat: upgrade linting capabilities

[adamalston]

Reference commits: f90b92d...9afc6d1

---

Debugging info related to dirname in CI:

console.log({
  dirname: _dirname,
  importMetaDirname: import.meta.dirname,
  equal: _dirname === import.meta.dirname,
  internalDirectories,
  rand: process.cwd(),
  meta: import.meta,
});

Node v18: https://github.com/adamalston/v2/actions/runs/12171967104/job/33949821164#step:5:9

{
  dirname: '/home/runner/work/v2/v2',
  importMetaDirname: undefined,
  equal: false,
  internalDirectories: [ 'App', '__mocks__', 'appearance', 'components', 'icons', 'types' ],
  rand: '/home/runner/work/v2/v2',
  meta: [Object: null prototype] {
    resolve: [Function: resolve],
    url: 'file:///home/runner/work/v2/v2/eslint.config.mjs?mtime=1733365136684'
  }
}

Node lts/*: https://github.com/adamalston/v2/actions/runs/12171967104/job/33949821386#step:5:9

{
  dirname: '/home/runner/work/v2/v2',
  importMetaDirname: '/home/runner/work/v2/v2',
  equal: true,
  internalDirectories: [ 'App', '__mocks__', 'appearance', 'components', 'icons', 'types' ],
  rand: '/home/runner/work/v2/v2',
  meta: [Object: null prototype] {
    dirname: '/home/runner/work/v2/v2',
    filename: '/home/runner/work/v2/v2/eslint.config.mjs',
    resolve: [Function: resolve],
    url: 'file:///home/runner/work/v2/v2/eslint.config.mjs?mtime=1733365136745'
  }
}

---

Closes #89