Bump Helm chart version in pre-release workflow (#792)

* Update chart version in pre-release bump

Keep Helm chart version and appVersion aligned with app releases.

* Publish Helm chart with releases

Package the Helm chart on tag releases, upload it to GitHub Pages, and attach it to the GitHub Release assets.

* Move Helm chart release to helm workflow

Publish Helm chart packages from the helm-release workflow on tags and keep publish.yml focused on app release assets.

* Derive nightly chart version from latest release

Use the most recent v* tag as the base for nightly Helm chart versions.

.github/workflows/publish.yml

@@ -349,12 +349,19 @@ jobs:
       - name: Bump pre-release version
         run: |
            VERSION_FILE="config/initializers/version.rb"
+           CHART_FILE="charts/sure/Chart.yaml"
 
            # Ensure version file exists
            if [ ! -f "$VERSION_FILE" ]; then
              echo "ERROR: Version file not found: $VERSION_FILE"
              exit 1
            fi
+
+           # Ensure chart file exists
+           if [ ! -f "$CHART_FILE" ]; then
+             echo "ERROR: Chart file not found: $CHART_FILE"
+             exit 1
+           fi
  
            # Extract current version
            CURRENT_VERSION=$(grep -oP '"\K[0-9]+\.[0-9]+\.[0-9]+-(alpha|beta|rc)\.[0-9]+' "$VERSION_FILE")
@@ -394,12 +401,21 @@ jobs:
            echo "Updated version.rb:"
            grep "semver" "$VERSION_FILE"
 
+           # Update Helm chart version and appVersion
+           sed -i -E "s/^version: .*/version: ${NEW_VERSION}/" "$CHART_FILE"
+           sed -i -E "s/^appVersion: .*/appVersion: \"${NEW_VERSION}\"/" "$CHART_FILE"
+
+           # Verify the change
+           echo "Updated Chart.yaml:"
+           grep -E "^(version|appVersion):" "$CHART_FILE"
+
       - name: Commit and push version bump
         run: |
           git config user.name "github-actions[bot]"
           git config user.email "github-actions[bot]@users.noreply.github.com"
 
           git add config/initializers/version.rb
+          git add charts/sure/Chart.yaml
 
           # Check if there are changes to commit
           if git diff --cached --quiet; then