chore(docs): remove i18n and the five translated locales (#7247)

The docs shipped `es`, `fr`, `de`, `ja`, and `zh` alongside `en` through
fumadocs i18n and a lingo.dev translation pipeline. Neither is used any
more, so this removes the locale layer end to end rather than leaving a
vestigial `en` directory behind it.

- Delete the five translated content trees (995 files) and flatten
  `content/docs/en/**` up to `content/docs/**`.
- Delete `lib/i18n.ts`, `i18n.json`, `i18n.lock`, and the `i18n.cache`
  gitignore entry; drop `createI18nMiddleware` from `proxy.ts` and the
  `i18n` option from the source loader.
- Collapse `app/[lang]/**` into `app/**`, merging the locale layout's
  html/body shell into the root layout. The OpenAPI virtual pages moved
  off `baseDir: 'en/api-reference/(generated)'`, which was the `en`
  segment the dir parser used to consume.
- Strip locale branching from the sitemap, `llms.txt`, `llms-full.txt`,
  the `llms.mdx` route, the sidebar's active-path matching, structured
  data, and the hreflang/`alternateLocale` metadata.
- Simplify the search route to English-only: one `english` text-search
  config, unconditional vector search, and no locale-prefix filtering of
  `sourceDocument`. The docs-embeddings job already runs with `--clear`,
  so the now-unprefixed paths are rewritten on the next run.
- Repoint every script, test, and the CI path filter at `content/docs`,
  and de-loop the API-reference sidebar checks over the six locales. The
  execution-guide wire-shape test covered only the removed locales; it is
  retargeted at the English guides, which already satisfy it.

`check:audits` (39 audits), the docs build (666 paths), the docs and
OpenAPI suites, and the netsuite docs-path test all pass.

Author: waleedlatif1

.agents/skills/add-column-type/SKILL.md

@@ -149,7 +149,7 @@ Registering the *type* is compiler-enforced. Registering its *metadata* is not,
 - [ ] `migrateCellsTo` / `migrateCellsFrom` added if the stored bytes change
 - [ ] New metadata keys added to `TYPE_SPECIFIC_COLUMN_KEYS` + `FOREIGN_METADATA_VERB`
 - [ ] Unit tests for `coerce` / `isCompatibleWith` round-trips, verified to fail without the code
-- [ ] Docs row added to `apps/docs/content/docs/en/tables/index.mdx`
+- [ ] Docs row added to `apps/docs/content/docs/tables/index.mdx`
 
 ## Final Validation (Required)
 

.agents/skills/add-integration/SKILL.md

@@ -576,7 +576,7 @@ bun run deployment-config:check
 bun run docs:check
 ```
 
-This creates `apps/docs/content/docs/en/integrations/{service}.mdx` — one page per service carrying the block's Actions and, if it has one, its Triggers section. Never hand-edit generated pages; the only editable region is the `{/* MANUAL-CONTENT */}` block (see `scripts/README.md`).
+This creates `apps/docs/content/docs/integrations/{service}.mdx` — one page per service carrying the block's Actions and, if it has one, its Triggers section. Never hand-edit generated pages; the only editable region is the `{/* MANUAL-CONTENT */}` block (see `scripts/README.md`).
 
 The docs generator refreshes `packages/deployment-config/src/integrations.json`, and the deployment
 config generator projects service-account provider IDs from that catalog plus the canonical OAuth

.agents/skills/add-model/SKILL.md

@@ -153,7 +153,7 @@ If the entry has `capabilities.thinking` or `capabilities.reasoningEffort`, it a
 
 - **Anthropic-family (`anthropic`, `azure-anthropic`) thinking models MUST declare `capabilities.thinking.streamed`** (`'full' | 'summary' | 'none'`). Verify against Anthropic's current thinking-display and streaming docs: visible thinking returned by the API is summarized, including when Sim opts models whose default display is `omitted` into `display: 'summarized'` on agent-events runs, so current Claude thinking models use `'summary'`. Use `'full'` only if future official API docs explicitly guarantee raw thinking deltas. `bun run agent-stream-docs:check` (CI) fails if the field is missing.
 - Other families usually omit the field and inherit the provider default in `getThinkingStreamVisibility` (Gemini/OpenAI → summaries; Bedrock/Meta → none; OpenAI-compatible vendors with documented reasoning fields → full deltas). Set it explicitly only when the model deviates from its family.
-- After inserting the entry, run `bun run agent-stream-docs:generate` and commit the regenerated `apps/docs/content/docs/en/workflows/blocks/agent.mdx` — CI diffs it.
+- After inserting the entry, run `bun run agent-stream-docs:generate` and commit the regenerated `apps/docs/content/docs/workflows/blocks/agent.mdx` — CI diffs it.
 - Include the `streamed` value (with its source URL) in the verification report when set.
 
 ### Wrong family entirely?

.github/workflows/ci.yml

@@ -630,7 +630,7 @@ jobs:
         with:
           filters: |
             docs:
-              - 'apps/docs/content/docs/en/**'
+              - 'apps/docs/content/docs/**'
               - 'apps/sim/scripts/process-docs.ts'
               - 'apps/sim/lib/chunkers/**'
 

.gitignore

@@ -86,7 +86,6 @@ start-collector.sh
 
 ## Helm Chart Tests
 helm/sim/test
-i18n.cache
 
 ## Claude Code
 .claude/launch.json

apps/docs/app/[lang]/[[...slug]]/page.tsx apps/docs/app/[[...slug]]/page.tsxapps/docs/app/[lang]/[[...slug]]/page.tsx renamed to apps/docs/app/[[...slug]]/page.tsx

@@ -1,6 +1,5 @@
 import type React from 'react'
 import { highlight } from 'fumadocs-core/highlight'
-import type { Root } from 'fumadocs-core/page-tree'
 import { findNeighbour } from 'fumadocs-core/page-tree'
 import type { ApiPageProps } from 'fumadocs-openapi/ui'
 import { createAPIPage } from 'fumadocs-openapi/ui'
@@ -16,13 +15,11 @@ import { APIExampleSelector } from '@/components/ui/api-example-selector'
 import { CodeBlock } from '@/components/ui/code-block'
 import { Heading } from '@/components/ui/heading'
 import { ResponseSection } from '@/components/ui/response-section'
-import { i18n } from '@/lib/i18n'
 import { getApiSpecContent, getAuthenticatedCodeSamples, openapi } from '@/lib/openapi'
 import { simShikiOptions } from '@/lib/shiki-theme'
 import { type PageData, source } from '@/lib/source'
 import { DOCS_BASE_URL } from '@/lib/urls'
 
-const SUPPORTED_LANGUAGES: Set<string> = new Set(i18n.languages)
 const BASE_URL = DOCS_BASE_URL
 
 /**
@@ -40,37 +37,6 @@ function isContentHeading(item: { url: string }): boolean {
   return !ONWARD_NAV_SLUG.test(item.url)
 }
 
-const OG_LOCALE_MAP: Record<string, string> = {
-  en: 'en_US',
-  es: 'es_ES',
-  fr: 'fr_FR',
-  de: 'de_DE',
-  ja: 'ja_JP',
-  zh: 'zh_CN',
-}
-
-function resolveLangAndSlug(params: { slug?: string[]; lang: string }) {
-  const isValidLang = SUPPORTED_LANGUAGES.has(params.lang)
-  const lang = isValidLang ? params.lang : 'en'
-  const slug = isValidLang ? params.slug : [params.lang, ...(params.slug ?? [])]
-  return { lang, slug }
-}
-
-/**
- * Strips a leading `/{lang}` path segment from a page URL. Unlike a naive
- * `String.replace`, this only removes the locale when it is actually the
- * first path segment — a plain substring replace would also match `/en`
- * inside unrelated slugs (e.g. `/platform/enterprise`, `/integrations/enrich`,
- * `/platform/self-hosting/environment-variables`), corrupting canonical and
- * hreflang URLs for those pages.
- */
-function stripLocalePrefix(url: string, lang: string): string {
-  const prefix = `/${lang}`
-  if (url === prefix) return ''
-  if (url.startsWith(`${prefix}/`)) return url.slice(prefix.length)
-  return url
-}
-
 /**
  * Renders the API reference's request and response samples through the docs' own `CodeBlock`
  * rather than fumadocs-openapi's built-in one, so those blocks get the emcn copy control
@@ -122,10 +88,9 @@ const APIPage = createAPIPage(openapi, {
   },
 })
 
-export default async function Page(props: { params: Promise<{ slug?: string[]; lang: string }> }) {
-  const params = await props.params
-  const { lang, slug } = resolveLangAndSlug(params)
-  const page = source.getPage(slug, lang)
+export default async function Page(props: { params: Promise<{ slug?: string[] }> }) {
+  const { slug } = await props.params
+  const page = source.getPage(slug)
   if (!page) notFound()
 
   const data = page.data as unknown as PageData & {
@@ -139,9 +104,7 @@ export default async function Page(props: { params: Promise<{ slug?: string[]; l
   const isAcademy = slug?.[0] === 'academy'
   const isCli = slug?.[0] === 'cli'
 
-  const pageTreeRecord = source.pageTree as Record<string, Root>
-  const pageTree = pageTreeRecord[lang] ?? pageTreeRecord.en ?? Object.values(pageTreeRecord)[0]
-  const rawNeighbours = pageTree ? findNeighbour(pageTree, page.url) : null
+  const rawNeighbours = findNeighbour(source.pageTree, page.url)
   // Academy, API Reference, and CLI are self-contained sections; keep prev/next
   // inside the section instead of spilling into the main documentation tree.
   // Match both the section's pages (`/<slug>/...`) and its index (`/<slug>`).
@@ -173,11 +136,6 @@ export default async function Page(props: { params: Promise<{ slug?: string[]; l
     let currentPath = ''
 
     urlParts.forEach((part: string, index: number) => {
-      if (index === 0 && SUPPORTED_LANGUAGES.has(part)) {
-        currentPath = `/${part}`
-        return
-      }
-
       currentPath += `/${part}`
 
       const name = part
@@ -218,7 +176,6 @@ export default async function Page(props: { params: Promise<{ slug?: string[]; l
           title={data.title}
           description={data.description || ''}
           url={`${BASE_URL}${page.url}`}
-          lang={lang}
           breadcrumb={breadcrumbs}
         />
         <DocsPage
@@ -265,7 +222,6 @@ export default async function Page(props: { params: Promise<{ slug?: string[]; l
         title={data.title}
         description={data.description || ''}
         url={`${BASE_URL}${page.url}`}
-        lang={lang}
         breadcrumb={breadcrumbs}
       />
       <DocsPage
@@ -336,12 +292,9 @@ export async function generateStaticParams() {
   return source.generateParams()
 }
 
-export async function generateMetadata(props: {
-  params: Promise<{ slug?: string[]; lang: string }>
-}) {
-  const params = await props.params
-  const { lang, slug } = resolveLangAndSlug(params)
-  const page = source.getPage(slug, lang)
+export async function generateMetadata(props: { params: Promise<{ slug?: string[] }> }) {
+  const { slug } = await props.params
+  const page = source.getPage(slug)
   if (!page) notFound()
 
   const data = page.data as unknown as PageData
@@ -377,13 +330,7 @@ export async function generateMetadata(props: {
       url: fullUrl,
       siteName: 'Sim Documentation',
       type: 'article',
-      locale: OG_LOCALE_MAP[lang] ?? 'en_US',
-      alternateLocale: i18n.languages.reduce<string[]>((locales, l) => {
-        if (l !== lang) {
-          locales.push(OG_LOCALE_MAP[l] ?? 'en_US')
-        }
-        return locales
-      }, []),
+      locale: 'en_US',
       images: [
         {
           url: ogImageUrl,
@@ -406,15 +353,6 @@ export async function generateMetadata(props: {
     canonical: fullUrl,
     alternates: {
       canonical: fullUrl,
-      languages: {
-        'x-default': `${BASE_URL}${stripLocalePrefix(page.url, lang)}`,
-        en: `${BASE_URL}${stripLocalePrefix(page.url, lang)}`,
-        es: `${BASE_URL}/es${stripLocalePrefix(page.url, lang)}`,
-        fr: `${BASE_URL}/fr${stripLocalePrefix(page.url, lang)}`,
-        de: `${BASE_URL}/de${stripLocalePrefix(page.url, lang)}`,
-        ja: `${BASE_URL}/ja${stripLocalePrefix(page.url, lang)}`,
-        zh: `${BASE_URL}/zh${stripLocalePrefix(page.url, lang)}`,
-      },
     },
   }
 }

apps/docs/app/[lang]/layout.tsx

@@ -11,7 +11,7 @@ const TITLE_FONT_SIZE = {
 } as const
 /** Average glyph width as a fraction of font size, for this weight/family — used to pack words into lines. */
 const LATIN_CHAR_WIDTH_EM = 0.42
-/** CJK glyphs (docs ships `ja`/`zh` locales) render near-square, roughly 2.4x a Latin glyph at this weight. */
+/** CJK glyphs render near-square, roughly 2.4x a Latin glyph at this weight. */
 const CJK_CHAR_WIDTH_EM = 1
 const CJK_RANGE = /[\u3000-\u30ff\u3400-\u4dbf\u4e00-\u9fff\uf900-\ufaff\uff00-\uffef]/
 const TITLE_BOX_WIDTH = 1020
@@ -58,7 +58,7 @@ function getTitleStyle(title: string): CSSProperties {
   }
 }
 
-/** Sums per-character em-widths rather than counting characters, so wide CJK glyphs (docs ships `ja`/`zh`) don't under-wrap. */
+/** Sums per-character em-widths rather than counting characters, so wide CJK glyphs don't under-wrap. */
 function estimateWidthEm(text: string): number {
   let width = 0
   for (const char of text) {
@@ -69,11 +69,10 @@ function estimateWidthEm(text: string): number {
 
 /**
  * Splits a single word wider than `maxWidthEm` into character-level chunks
- * that each fit. CJK titles (docs ships `ja`/`zh` locales) are often
- * space-free, so a whole run can arrive as one "word" from `wrapTitleLines`'
- * space-based split. Breaking mid-word is correct for CJK, where each glyph
- * is independently readable; Latin words never reach this path since they
- * stay under `maxWidthEm` in practice.
+ * that each fit. CJK titles are often space-free, so a whole run can arrive
+ * as one "word" from `wrapTitleLines`' space-based split. Breaking mid-word
+ * is correct for CJK, where each glyph is independently readable; Latin words
+ * never reach this path since they stay under `maxWidthEm` in practice.
  */
 function splitOversizedWord(word: string, maxWidthEm: number): string[] {
   const chunks: string[] = []
@@ -139,7 +138,7 @@ function wrapTitleLines(title: string, fontSize: number): string[] {
  * last-shipped `soehne-kraftig.woff2` since Satori (`next/og`'s renderer)
  * can't parse WOFF2 or variable fonts. Fetched over HTTP since the edge
  * runtime has no filesystem access — served from `/static/fonts/` (not
- * `/fonts/`) so it isn't intercepted by the site's i18n proxy (`proxy.ts`),
+ * `/fonts/`) so it isn't intercepted by the site's proxy (`proxy.ts`),
  * whose matcher excludes `static` but not `fonts`.
  */
 async function loadTitleFont(baseUrl: string): Promise<ArrayBuffer> {