ci: add build-dist workflow with version suffix

Author: ryan-williams

.github/workflows/build-dist.yml

@@ -0,0 +1,88 @@
+name: Build dist branch
+
+on:
+  workflow_dispatch:
+    inputs:
+      source_ref:
+        description: 'Source branch to build from'
+        required: false
+        default: ''
+
+jobs:
+  build-dist:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          ref: ${{ inputs.source_ref || github.ref_name }}
+          fetch-depth: 0
+
+      - name: Get source info
+        id: info
+        run: |
+          echo "source_sha=$(git rev-parse HEAD)" >> $GITHUB_OUTPUT
+          echo "short_sha=$(git rev-parse --short HEAD)" >> $GITHUB_OUTPUT
+          echo "version=$(jq -r .version package.json)" >> $GITHUB_OUTPUT
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Build bundle
+        run: npm run bundle
+
+      - name: Create dist branch
+        env:
+          SOURCE_REF: ${{ inputs.source_ref || github.ref_name }}
+          SOURCE_SHA: ${{ steps.info.outputs.source_sha }}
+          SHORT_SHA: ${{ steps.info.outputs.short_sha }}
+          SOURCE_VERSION: ${{ steps.info.outputs.version }}
+        run: |
+          DIST_BRANCH="${SOURCE_REF}-dist"
+          DIST_VERSION="${SOURCE_VERSION}-dist.${SHORT_SHA}"
+
+          # Configure git
+          git config user.name "github-actions[bot]"
+          git config user.email "github-actions[bot]@users.noreply.github.com"
+
+          # Save files we need before switching branches
+          mkdir -p /tmp/dist-build
+          cp -r dist/ /tmp/dist-build/
+          cp package.json /tmp/dist-build/
+          cp package-lock.json /tmp/dist-build/
+
+          # Fetch and checkout dist branch (or create orphan)
+          if git fetch origin "$DIST_BRANCH" 2>/dev/null; then
+            git checkout "$DIST_BRANCH"
+          else
+            git checkout --orphan "$DIST_BRANCH"
+            git rm -rf .
+          fi
+
+          # Clean and restore dist files
+          rm -rf dist/
+          cp -r /tmp/dist-build/dist/ ./
+          cp /tmp/dist-build/package.json ./
+          cp /tmp/dist-build/package-lock.json ./
+
+          # Update version in package.json
+          jq --arg v "$DIST_VERSION" '.version = $v' package.json > package.json.tmp
+          mv package.json.tmp package.json
+
+          # Commit
+          git add -A
+          git commit -m "plotly.js@${DIST_VERSION}
+
+          Built from ${SOURCE_SHA}"
+
+          # Push
+          git push origin "$DIST_BRANCH" --force
+
+          echo "✅ Pushed $DIST_BRANCH with version $DIST_VERSION"
+          echo ""
+          echo "Install with:"
+          echo "  pnpm add github:${{ github.repository }}#$DIST_BRANCH"