ci: Add PR comment

.github/workflows/chromatic.yml

@@ -38,8 +38,24 @@ jobs:
         run: npm install
 
       - name: Build & Publish Storybook
+        id: publish
         uses: chromaui/action@v1
         with:
           projectToken: ${{ secrets.CHROMATIC_PROJECT_TOKEN }}
           token: ${{ secrets.GITHUB_TOKEN }}
           buildScriptName: "storybook-build"
+
+      # If the build is successful and the action is triggered by a PR, comment on the PR with the Chromatic URL
+      - name: PR Comment
+        if: github.event_name == 'pull_request' && steps.publish.outcome == 'success'
+        uses: actions/github-script@v7
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          script: |
+            github.issues.createComment({
+              issue_number: context.issue.number,
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              body: `Changes published to Chromatic. Review at: ${steps.publish.outputs.storybookUrl}`
+            })
+