feat(i18n): add Nuxt i18n and Lunaria translation tracking

[RedStar071]

Summary

Adds Nuxt i18n + Lunaria translation tracking modeled on npmx.dev, including the related CI workflows, autofix hooks, VS Code i18n-ally setup, and contributor docs.

• Locales: English (en) source + Spanish (es-ES), matching Skyra/WolfStar locale keys
• @nuxtjs/i18n: no_prefix strategy, browser detection off, preferred locale in localStorage
• Lunaria: lunaria.config.json + nested-key status.json builder; dashboard at /lunaria/, status page at /translation-status
• UI: locale-aware header/footer/auth chrome, AppLocaleSelect, translation-status link in footer
• Tooling: i18n:check / i18n:report / i18n:schema / build:lunaria (vp tasks + :fix package scripts)

Workflows & related pieces (npmx-style)

Piece	Purpose
.github/workflows/ci.yml → 🌐 i18n validation	pnpm vp run i18n:report + schema drift check
.github/workflows/lunaria.yml	PR overview comment via lunariajs/action (pull_request_target)
.github/workflows/autofix.yml	Runs i18n:check + build:lunaria before lint
vite.config.ts staged hook	On i18n/locales/* changes → rebuild Lunaria + refresh schema
.vscode/settings.json + extensions.json	i18n Ally (@intlify/vue-i18n-ally)
.github/CONTRIBUTING.md	Localization section (add locale, check/report, Lunaria)
AGENTS.md	i18n / Lunaria command docs
.github/zizmor.yml	Ignore dangerous-triggers + pin note for Lunaria workflow

Test plan

• pnpm build
• pnpm lint:fix
• pnpm typecheck
• pnpm test
• CI: 🌐 i18n validation job green
• CI: Lunaria overview comment posts on PR
• Autofix runs i18n:check / build:lunaria when locale files change
• Manual: switch to Español via footer selector; open /translation-status and /lunaria/

  

---

^{Need help on this PR? Tag /codesmith with what you need. Autofix is disabled.}

Confidence Score: 4/5

The PR is close, but the translation-status asset serving path needs a fix before merging.

The main i18n setup is coherent, but the generated Lunaria assets are not served because the local Nuxt module is not registered.

nuxt.config.ts

T-Rex Logs

What T-Rex did

• Verified the Lunaria module's runtime asset registration by running the Node/Nuxt repro harness, confirming dist/lunaria/status.json exists and parses as JSON, and that the Nitro publicAssets contain only /avatars with no /lunaria entry.
• T-Rex produced a proof for the posted P1 finding, and the corresponding review comment contains the details.
• Observed that the Nuxt app footer locale control renders English and cannot reveal Español; the DOM shows the combobox as closed (aria-expanded false) with no Español option, and the interaction video plus logs document the failure to surface Español.
• Artifacts from the Lunaria repro harness and the locale-interaction run were captured and uploaded for reviewer access.

_{Ran code and verified through T-Rex}

Prompt To Fix All With AI

Fix the following 1 code review issue. Work through them one at a time, proposing concise fixes.

---

### Issue 1 of 1
nuxt.config.ts:29-36
**Register Lunaria module**
`modules/lunaria.ts` is the only code that publishes `dist/lunaria` as Nitro public assets, but this config never registers that module. As shipped, `build:lunaria` can generate `dist/lunaria/status.json`, yet the Nuxt app has no `publicAssets` entry for `/lunaria/`, so `/translation-status` fetches `/lunaria/status.json` and always gets no data in production. Add the local module to `modules` before relying on the route.

_{Reviews (4): Last reviewed commit: "docs(agents): document i18n and Lunaria ..." | Re-trigger Greptile}

[codecov]

Codecov Report

❌ Patch coverage is 67.60563% with 23 lines in your changes missing coverage. Please review.
✅ Project coverage is 71.44%. Comparing base (8babfde) to head (7086a59).
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
config/i18n.ts	69.69%	10 Missing ⚠️
app/app.vue	0.00%	4 Missing and 2 partials ⚠️
app/components/app/LocaleSelect.vue	63.63%	2 Missing and 2 partials ⚠️
app/composables/usePreferredLocale.ts	75.00%	1 Missing ⚠️
app/plugins/i18n-loader.client.ts	83.33%	1 Missing ⚠️
app/utils/is-app-locale.ts	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #305      +/-   ##
==========================================
- Coverage   71.53%   71.44%   -0.10%     
==========================================
  Files         167      173       +6     
  Lines        3302     3372      +70     
  Branches      702      711       +9     
==========================================
+ Hits         2362     2409      +47     
- Misses        447      466      +19     
- Partials      493      497       +4     

Flag	Coverage Δ
component	66.12% <67.60%> (+0.03%)	⬆️
unit	67.71% <69.69%> (+0.04%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
app/components/app/Footer.vue	100.00% <100.00%> (ø)
app/components/app/Header.vue	78.57% <100.00%> (+1.64%)	⬆️
app/components/app/HeaderAuth.vue	60.00% <100.00%> (+4.44%)	⬆️
app/composables/useFooter.ts	100.00% <100.00%> (ø)
app/composables/useHeader.ts	90.00% <100.00%> (+1.11%)	⬆️
app/utils/marketing-routes.ts	50.00% <ø> (ø)
i18n/i18n.config.ts	100.00% <100.00%> (ø)
package.json	100.00% <ø> (ø)
app/composables/usePreferredLocale.ts	75.00% <75.00%> (ø)
app/plugins/i18n-loader.client.ts	83.33% <83.33%> (ø)
... and 4 more

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[greptile-apps]

Checkout PR head
This pull_request_target workflow checks out the base repository default ref because no PR ref is supplied, so Lunaria runs against main instead of the PR's locale changes. The action will post an overview for stale base-branch files on every PR update; checkout needs ref: ${{ github.event.pull_request.head.sha }} before generating the overview.

Prompt To Fix With AI

This is a comment left during a code review.
Path: .github/workflows/lunaria.yml
Line: 22-27

Comment:
**Checkout PR head**
This `pull_request_target` workflow checks out the base repository default ref because no PR `ref` is supplied, so Lunaria runs against `main` instead of the PR's locale changes. The action will post an overview for stale base-branch files on every PR update; checkout needs `ref: ${{ github.event.pull_request.head.sha }}` before generating the overview.

How can I resolve this? If you propose a fix, please make it concise.

[codspeed-hq]

Merging this PR will not alter performance

✅ 44 untouched benchmarks

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_{Comparing cursor/lunaria-nuxt-i18n-98c9 (7086a59) with main (8babfde)}