Docs Site Localization

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This guide covers the localization surfaces outside src/locales/: the documentation site under docs/, the bot links that point at it, and the translated READMEs in .github/.

Adding runtime strings is a separate task. Start with Adding a New Locale for the locale tree, then come back here to publish the locale’s documentation surfaces.

One Locale Configuration

src/constants/docsLocales.ts is the single source of truth for docs locales. Every other surface derives from it, so a locale is described once:

Consumer	Reads from the table
`apps/docs/astro.config.mts`	Starlight `locales`, sitemap i18n, sidebar label fallbacks, locale-root redirects, `llms.txt` exclusions
`apps/landing/src/pages/index.astro`, `apps/landing/src/landingCopy.ts`	The product landing pages, their localized copy, metadata, and language links
`apps/docs/src/routeData.ts`	hreflang alternates, `noindex` on fallback routes, meta description budget
`apps/docs/src/components/MarkdownContent.astro`	Which review notice a page shows, and its wording
`src/utils/discord/docsLinks.ts`, `src/utils/misc/docsUrl.ts`	The locale prefix on every docs link the bot builds

The module is imported by the bot runtime and by the Astro build, so it must stay dependency-free: no Node built-ins, and no project module other than src/constants/locales.ts.

The publish flag

A locale entry has a docsTree flag. While it is false:

The locale root serves a 404 rather than serving English, which is the honest answer for a URL with no content behind it.
Starlight does not register the locale, so no sidebar, sitemap, or alternate is emitted for it.
The bot’s docs links resolve to English instead of a prefix that does not exist.

The flag governs content and link building. The product landing pages derive their language links from the same table and include only entries whose trees are published, so a staged locale is not presented to readers.

Setting it to true is the act of publishing. tests/unit/docs/docsLocaleConfig.test.ts fails if the flag and the docs/ directory disagree, in either direction.

Shared Files a Locale Addition Touches

These are the only files a new locale has to touch. Everything else is already staged for every locale in DOCS_LOCALES, or derives from it.

File	Edit
`src/constants/docsLocales.ts`	Add or update the locale entry, then set `docsTree: true` to publish.
`docs/{locale}/**`	The translated page tree.
`src/locales/{locale}/**`	Hardcoded docs URLs inside locale strings, which carry their own locale prefix. Repoint them to `/{locale}/` once the tree is published.
`.github/README_{locale}.md`	The translated README, plus a switcher row pointing back at `../README.md`.
`README.md`	The locale’s switcher entry becomes a live link once its translated file exists.

apps/docs/public/_redirects is already staged for every target locale in DOCS_LOCALES. Its entries name the locale root without claiming content exists, so docsTree: true plus the page tree is the whole publish step. Add the locale’s landing-page copy before publishing it so its generated product route has translated content and metadata.

Pages that stay English-only are linked with an explicit English destination, per the scope rule below. bun run check-locale-links resolves each project-owned route in the linking file’s own locale tree first and then in the default tree, so a link to an untranslated page passes while a link to a page that exists nowhere fails.

The redirect pair is the entry nothing can derive from the table, because _redirects is a static asset. It is written for every target locale ahead of its content, so publishing a locale needs no edit there. The Astro redirect map is generated from the locale table and needs no edit either.

An unpublished locale root is not redirected to English. It 404s, which is the honest answer for a URL the site does not serve, and it keeps a locale from looking published before its content lands.

Localized Page Scope

Translated trees mirror English for the reader-facing pages only. architecture/, contributing/, and wiki/ stay English, because localizing contributor documentation would nearly triple the per-locale page count for an audience that reads English source either way.

A page with no translation is served at its locale URL with the English content, which is Starlight’s fallback behavior. That fallback route:

Is marked noindex, because indexing it competes with the English page it copies.
Emits no hreflang alternate, so search engines are never told the two are translations.
Is excluded from the sitemap.
Shows the locale’s own draft disclaimer, so a reader knows the page is not translated yet.

Publishing a translation flips all four automatically and adds the alternate pair.

Links inside a translated page

Starlight emits a per-locale route set but does not rewrite a root-relative href in page source into the current locale’s prefix. An unprefixed route in a translated file therefore resolves through the bare-route redirect and ejects the reader into English.

English pages keep unprefixed routes such as /features/knowledge/memory/.
A translated page prefixes its own locale for a destination that exists in that locale: /ja/features/knowledge/memory/.
A translated page links to /en/... for a page outside the reader-facing scope or one whose translation has not landed.
Fragments follow the destination page’s own headings, in whichever tree that destination lives.

The ja tree is the worked example: most of its links carry /ja/, and the ones that carry /en/ are pages the Japanese tree does not have. Two links under docs/ja/legal/ still use unprefixed routes and send a Japanese reader to English; Japanese catch-up owns fixing them. bun run check-locale-links only scans absolute docs.tomoribot.app URLs, so this rule has no automated backstop for Markdown source.

Review Notices and `aiGenerated`

The notice above each page comes from the notices map in the locale table. A page shows exactly one of:

Page state	Notice
`aiGenerated: false` in that locale’s file	None. A human reviewed it.
Translated page whose English source has `aiGenerated: false`	The locale’s translation notice, linking to the English page. Hidden unless `DOCS_SHOW_TRANSLATION_NOTICE=true`.
Anything else	The locale’s draft disclaimer.

Machine-translated pages must not carry aiGenerated: false; delete that line when translating a page that has it. After a human reviews a translation, add aiGenerated: false to the translated file to clear its notice. Legal pages additionally state that the English version controls.

Bot Docs Links

buildDocsUrl() and buildLegalDocUrl() both route through buildLocalizedDocsPath(), which prefixes the locale only when its tree exists and otherwise returns English. Two consequences worth knowing:

DOCS_PATHS (exported from src/utils/discord/docsLinks.ts) holds locale-less routes such as /features/knowledge/memory/. Never add a locale prefix there; the builder owns the prefix, and tests/unit/docs/docsRouteRegistry.test.ts fails on a route that carries one.
Locale strings cannot call a builder, because they are static text. Their links are absolute, including the locale prefix, and the same test resolves each one against docs/ to catch a route that moved.

Site Roots

tomoribot.app has an indexable English product landing page at / and an indexable page for every published locale at /{locale}/. apps/landing/src/pages/index.astro reads DOCS_LOCALES to generate the language routes, while apps/landing/src/landingCopy.ts owns the translated page copy and metadata. Every landing page has its own canonical URL and reciprocal hreflang alternates. The selector moves between the corresponding landing pages, and each page links to its matching localized documentation introduction.

The product site does not redirect from Accept-Language: visitors choose their language explicitly, while search engines always receive stable locale URLs.

docs.tomoribot.app/ redirects permanently to /en/introduction/. The language selector in Starlight remains available after arrival, and the product landing page provides direct links to every locale. Keep the root redirect aligned between the Astro redirect map and apps/docs/public/_redirects; the docs build checks both forms.

The two hosts are separate Cloudflare Pages projects. The product project builds from the repository root with bun install && cd apps/landing && bun run build and publishes apps/landing/dist. The documentation project uses the matching repository-root pattern with apps/docs. Do not attach the apex hostname to the docs project: serving the same build from both hosts would create duplicate documentation URLs.

Machine-Readable Output

llms.txt, llms-small.txt, llms-full.txt, and the per-audience sets under _llms-txt/ are English-only. starlight-llms-txt selects the default locale’s entries, and apps/docs/scripts/checkLlmsOutput.ts fails the build if a non-default locale URL appears in any of them.

That script also verifies hreflang against the built HTML: every fallback route must emit no alternate, and every translated pair must emit its full set plus x-default. It checks that the docs root redirects to the default-locale introduction in both generated HTML and Cloudflare’s redirect rules. bun run build in apps/docs runs both.

Verifying a Locale Addition

cd apps/docs && bun run build   # docs build, hreflang and llms.txt checks
bun test tests/unit/docs/       # locale config, routing, fallback, and notice rules
bun run check                   # TypeScript strict mode
bun run lint                    # Biome formatting
bun run check-locale-links      # locale strings, docs, and README routes resolve

bun run build fails rather than warns when a fallback route advertises an alternate, which is the check that catches a route accidentally registered without its content.