oxlint & oxfmt

[Hinton]

Ticket

• Closes PAS-XXX

Description

Modernizes the repo tooling.

Prettier → Oxfmt for formatting; ESLint 8 (legacy .eslintrc.json)
ESLint → Oxlint; added Oxlint as a fast first-pass linter running alongside ESLint.

No runtime/content changes — this is tooling only. Only two files are formatted/linted with real logic (src/.vuepress/config.ts and src/.vuepress/components/SwaggerComponent.vue); the rest is Markdown, SCSS, and JSON.

Shape

Formatting (Oxfmt)

• .oxfmtrc.json generated via oxfmt --migrate=prettier. endOfLine: auto dropped as unsupported; ignore patterns migrated. One minor reformat in palette.scss (multi-line --font-family value) and one in SwaggerComponent.vue (empty <div></div> normalized to self-closing <div />, a hardcoded Oxfmt behavior for empty non-void Vue elements).

Linting (Oxlint + ESLint)

• Oxlint config (.oxlintrc.json) enables the full Correctness category plus explicit overrides for the handful of eslint:recommended rules that live in other categories (Pedantic/Restriction/Suspicious). Net effect vs. the old eslint:recommended: same 66 rules preserved, +19 new Correctness rules gained.
• ESLint moved to flat config:
  • Deleted .eslintrc.json and .eslintignore (flat config ignores the latter).
  • eslint.config.mjs composes @eslint/js, eslint-plugin-vue (flat/recommended), eslint-config-prettier, a files/globals block providing browser + node globals for .js/.mjs/.cjs/.ts/.vue, and eslint-plugin-oxlint's buildFromOxlintConfigFile() last to disable rules Oxlint already runs.
  • ESLint's role is now primarily eslint-plugin-vue template linting (Oxlint only lints the <script> block of .vue files).
• Scripts: oxfmt → oxlint → eslint chained in lint / lint:check.

ESLint v10 ecosystem versions

• eslint@^10, @eslint/js@^10, eslint-plugin-vue@^10, vue-eslint-parser@^10 (explicit because it's a peer dep), eslint-config-prettier@^10, globals@^17.

Checklist

I did the following to ensure that my changes were tested thoroughly:

• Ran pnpm run lint:check — oxfmt, oxlint (85 rules on 3 files), and eslint all pass clean on a fresh clone.
• Ran pnpm run build — Vuepress build succeeds (34 pages rendered).
• Seeded a no-unused-vars violation in a .ts file and confirmed Oxlint flags it while ESLint stays silent (verifies eslint-plugin-oxlint disables overlapping rules correctly).
• Seeded a vue/no-duplicate-attributes violation in a .vue template and confirmed ESLint flags it (verifies Vue template linting is preserved).
• Verified both .ts and .vue files are actually linted by ESLint via --debug output.

I did the following to ensure that my changes do not introduce security vulnerabilities:

• Tooling-only change; no runtime code, auth, or data-handling surface is touched.
• All new/upgraded packages are from the official Oxc and ESLint ecosystems.