Add interactive playground page for GitHub Actions workflow visualization (#7321)

Author: Copilot

.github/workflows/docs.yml

@@ -1,6 +1,10 @@
 name: Doc Build - Deploy
 
 on:
+  schedule:
+    # Daily rebuild so the Playground can pick up updated run snapshots.
+    # (GitHub uses UTC for cron schedules.)
+    - cron: '0 6 * * *'
   workflow_dispatch:
   release:
     types: [created]
@@ -43,6 +47,54 @@ jobs:
         working-directory: ./docs
         run: npm ci
 
+      - name: Fetch org-owned playground workflows
+        working-directory: ./docs
+        env:
+          # Repo-relative file paths to copy into docs bundle (comma-separated).
+          PLAYGROUND_ORG_WORKFLOWS_FILES: >-
+            .github/workflows/playground-executor.md,
+            .github/workflows/playground-executor.lock.yml
+        run: npm run fetch-playground-org-owned
+
+      - name: Validate Playground fetch configuration (optional)
+        working-directory: ./docs
+        env:
+          PLAYGROUND_SNAPSHOTS_REPO: ${{ secrets.PLAYGROUND_SNAPSHOTS_REPO }}
+          PLAYGROUND_SNAPSHOTS_REF: ${{ secrets.PLAYGROUND_SNAPSHOTS_REF }}
+          PLAYGROUND_SNAPSHOTS_PATH: ${{ secrets.PLAYGROUND_SNAPSHOTS_PATH }}
+          PLAYGROUND_SNAPSHOTS_TOKEN: ${{ secrets.PLAYGROUND_SNAPSHOTS_TOKEN }}
+        shell: bash
+        run: |
+          set -euo pipefail
+
+          if [[ -z "${PLAYGROUND_SNAPSHOTS_REPO:-}" ]]; then
+            echo "[playground] PLAYGROUND_SNAPSHOTS_REPO not set; skipping private-repo fetch."
+            exit 0
+          fi
+
+          if [[ -z "${PLAYGROUND_SNAPSHOTS_TOKEN:-}" ]]; then
+            echo "::error::[playground] PLAYGROUND_SNAPSHOTS_TOKEN is required to fetch from a private repo."
+            exit 1
+          fi
+
+          echo "[playground] Repo: ${PLAYGROUND_SNAPSHOTS_REPO}"
+          echo "[playground] Ref: ${PLAYGROUND_SNAPSHOTS_REF:-<default main>}"
+          echo "[playground] Snapshots path: ${PLAYGROUND_SNAPSHOTS_PATH:-<default docs/playground-snapshots>}"
+
+      - name: Fetch playground workflows (optional)
+        working-directory: ./docs
+        env:
+          PLAYGROUND_WORKFLOWS_REPO: ${{ secrets.PLAYGROUND_SNAPSHOTS_REPO }}
+          PLAYGROUND_WORKFLOWS_REF: ${{ secrets.PLAYGROUND_SNAPSHOTS_REF }}
+          PLAYGROUND_WORKFLOWS_TOKEN: ${{ secrets.PLAYGROUND_SNAPSHOTS_TOKEN }}
+          # Repo-relative file paths to fetch (comma-separated).
+          PLAYGROUND_WORKFLOWS_FILES: >-
+            .github/workflows/project-board-draft-updater.md,
+            .github/workflows/project-board-draft-updater.lock.yml,
+            .github/workflows/project-board-issue-updater.md,
+            .github/workflows/project-board-issue-updater.lock.yml
+        run: npm run fetch-playground-workflows
+
       - name: Build documentation
         working-directory: ./docs
         env: