merged workflow too

Author: jdevalk

.github/workflows/playground-merged.yml

@@ -10,10 +10,35 @@ jobs:
     if: github.event.pull_request.merged == true
     runs-on: ubuntu-latest
     permissions:
+      contents: read
       pull-requests: write
+      actions: read
     steps:
+      - name: Prepare blueprint with artifact link
+        id: blueprint
+        run: |
+          set -euxo pipefail
+          ARTIFACT_URL="${{ github.server_url }}/${{ github.repository }}/archive/refs/heads/develop.zip"
+
+          # Use Node.js to parse, modify, and stringify the JSON
+          BLUEPRINT=$(node -e "
+            const fs = require('fs');
+            const blueprint = JSON.parse(fs.readFileSync('.wordpress-org/blueprints/playground.json', 'utf8'));
+            blueprint.plugins = blueprint.plugins.map(plugin =>
+              plugin === '${{ github.event.repository.name }}' ? '$ARTIFACT_URL' : plugin
+            );
+            console.log(JSON.stringify(blueprint));
+          ")
+
+          # Base64 encode the blueprint
+          ENCODED_BLUEPRINT=$(echo -n "$BLUEPRINT" | base64 -w 0)
+
+          echo "blueprint=$ENCODED_BLUEPRINT" >> "$GITHUB_OUTPUT"
+
+      # Comment with a Playground link that installs from the artifact ZIP
       - uses: mshick/add-pr-comment@v2
         with:
           message: |
             **Test merged PR on Playground**
-            [Test this pull request on the Playground](https://playground.wordpress.net/?blueprint-url=https%3A%2F%2Fprogressplanner.com%2Fresearch%2Fblueprint-pp.php%3Frepo%3D${{ github.repository }}) or [download the zip](${{ github.server_url }}/${{ github.repository }}/archive/refs/heads/develop.zip).
+            [Test this pull request on the Playground](https://playground.wordpress.net/#${{ steps.blueprint.outputs.blueprint }})
+            or [download the zip](${{ github.server_url }}/${{ github.repository }}/archive/refs/heads/develop.zip)