ci(flyte-binary): check chart README is regenerated with helm-docs

.github/workflows/check-helm-docs.yml

@@ -0,0 +1,52 @@
+name: Check Helm Docs
+
+# Fails when charts/flyte-binary/README.md is out of date with the chart's
+# values.yaml / Chart.yaml. The README is generated by helm-docs, so this guards
+# against contributors editing values without regenerating the docs.
+#
+# helm-docs is installed via `go install` (not the prebuilt release binary) on
+# purpose: the release binary bakes in a version string and therefore appends an
+# "Autogenerated from chart metadata using helm-docs" footer, while `go install`
+# leaves the version empty and omits it. The committed README has no footer, so
+# CI must generate it the same way to stay reproducible.
+
+on:
+  pull_request:
+    types: [opened, synchronize, reopened]
+    branches:
+      - main
+    paths:
+      - 'charts/flyte-binary/**'
+      - '.github/workflows/check-helm-docs.yml'
+
+permissions:
+  contents: read
+
+env:
+  HELM_DOCS_VERSION: v1.8.0
+
+jobs:
+  check-helm-docs:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version-file: go.mod
+
+      - name: Install helm-docs
+        run: go install "github.com/norwoodj/helm-docs/cmd/helm-docs@${HELM_DOCS_VERSION}"
+
+      - name: Regenerate chart README
+        run: helm-docs --chart-search-root=charts/flyte-binary
+
+      - name: Verify README is up to date
+        run: |
+          if ! git diff --exit-code -- charts/flyte-binary/README.md; then
+            echo "::error::charts/flyte-binary/README.md is out of date."
+            echo "Run 'helm-docs --chart-search-root=charts/flyte-binary' (helm-docs ${HELM_DOCS_VERSION}) and commit the result."
+            exit 1
+          fi