Call the i18n workflows in exercism/i18n

.github/workflows/i18n-completeness.yml

@@ -1,94 +1,26 @@
-# Template. Installed as .github/workflows/i18n-completeness.yml in each repo
-# that holds English. Keep the filename, because exercism/i18n's
-# rerun-source-check.yml finds this workflow's runs by it. Don't edit a copy in
-# a source repo. Edit exercism/i18n/source-repo-workflows/ and re-sync.
+# This workflow is installed as .github/workflows/i18n-completeness.yml in
+# every repo that holds English. Don't edit it in those repos. Edit it in
+# exercism/i18n/source-repo-workflows/ and copy it to each repo. Keep the file
+# name, because exercism/i18n's rerun-source-check.yml looks for it.
 #
-# This workflow checks whether exercism/i18n holds the translation for every
-# production locale for all the English changed in a PR. If any translation is
-# missing, the check fails. Once `completeness` is a required status check on
-# `main`, a PR can't be merged until its translations exist.
+# This workflow checks that exercism/i18n has a translation of all the English
+# a PR changes, and fails if anything is missing. The work happens in
+# exercism/i18n/.github/workflows/source-completeness.yml. This file only sets
+# when it runs and what it is allowed to do.
 #
-# The logic lives in exercism/i18n's scripts/completeness.mjs. This workflow
-# fetches what that script needs and runs it.
-#
-# Fork safety:
-#
-#  - It runs on `pull_request`, so PRs from forks get a read-only token and no
-#    secrets. It doesn't need any, because both repos are public.
-#  - The PR is never checked out. Its merge ref is fetched into a bare
-#    repository without file contents and read with `git ls-tree` and
-#    `git cat-file`, so nothing from the PR is written to disk or run.
-#  - The only code that runs is exercism/i18n's scripts, from its `main` branch.
-#  - Website YAML and TypeScript files are parsed as data and never run.
-#
-# What counts as a change:
-#
-# GitHub's `refs/pull/<n>/merge` is what `main` would look like after the merge,
-# and its first parent is the current `main`. The check compares the two, so a
-# PR only needs translations for the English it adds or changes. If the PR has
-# a merge conflict, GitHub has no merge ref and the check fails with a message
-# saying so.
+# GitHub reports this check as `i18n / completeness`. To make it a required
+# check, require that name.
 
 name: i18n completeness
 
 on:
   pull_request:
     branches: [main]
 
-permissions:
-  contents: read
-
-concurrency:
-  group: i18n-completeness-${{ github.event.pull_request.number }}
-  cancel-in-progress: true
+permissions: {}
 
 jobs:
-  completeness:
-    runs-on: ubuntu-latest
-    steps:
-      # Checks out exercism/i18n for its scripts and translations. The PR's own
-      # repo is never checked out.
-      #
-      # TODO(iHiD): once locales/ holds a few hundred thousand files, make this a
-      # sparse checkout of scripts/, the two JSON files and the production
-      # locales only.
-      - name: Check out exercism/i18n (scripts and translations)
-        uses: actions/checkout@v7
-        with:
-          repository: exercism/i18n
-          ref: main
-          path: i18n
-          persist-credentials: false
-
-      - uses: pnpm/action-setup@v6
-        with:
-          package_json_file: i18n/package.json
-
-      - uses: actions/setup-node@v7
-        with:
-          node-version: 24
-
-      # Installs the scripts' one dependency, `yaml`, which is only needed for
-      # the website.
-      - name: Install
-        run: pnpm install --frozen-lockfile --dir i18n
-
-      - name: Fetch the PR's merge ref as git objects (no working tree)
-        env:
-          REPO: ${{ github.repository }}
-          PR: ${{ github.event.pull_request.number }}
-        run: |
-          set -euo pipefail
-          git init --quiet --bare pr
-          git -C pr remote add origin "https://github.com/${REPO}.git"
-          git -C pr config remote.origin.promisor true
-          git -C pr config remote.origin.partialclonefilter blob:none
-          if ! git -C pr fetch --quiet --depth=2 --filter=blob:none --no-tags origin "refs/pull/${PR}/merge"; then
-            echo "::error::This PR has no merge ref, which usually means it conflicts with main. Resolve the conflict and this check will run."
-            exit 1
-          fi
-
-      - name: Does exercism/i18n hold every translation this PR needs?
-        env:
-          REPO: ${{ github.repository }}
-        run: node i18n/scripts/completeness.mjs --source-repo=pr --repo="$REPO" --head=FETCH_HEAD --base='FETCH_HEAD^1'
+  i18n:
+    permissions:
+      contents: read
+    uses: exercism/i18n/.github/workflows/source-completeness.yml@main