fix(editor): bundle Monaco locally to fix stuck Loading state and CSP block

- Add monaco-editor to frontend deps and configure @monaco-editor/react
  to use the local bundle via loader.config({ monaco }) instead of
  fetching from cdn.jsdelivr.net (blocked by CSP scriptSrc: self)
- Wire editorWorker via Vite ?worker syntax — blob: URLs already
  permitted by existing workerSrc CSP directive, no CSP changes needed
- fix(ci): use DOCS_REPO_TOKEN in release-please so tag creation
  cascades to docker-publish.yml (GITHUB_TOKEN cannot trigger workflows)
- fix(ci): auto-merge screenshots PR via gh pr merge --auto --squash

.github/workflows/release-please.yml

@@ -15,6 +15,9 @@ jobs:
     steps:
       - uses: googleapis/release-please-action@v4
         with:
-          token: ${{ secrets.GITHUB_TOKEN }}
+          # GITHUB_TOKEN cannot trigger other workflows (GitHub security restriction).
+          # Using DOCS_REPO_TOKEN (PAT) ensures the tag push from release-please
+          # cascades to docker-publish.yml and publishes to Docker Hub.
+          token: ${{ secrets.DOCS_REPO_TOKEN }}
           config-file: release-please-config.json
           manifest-file: .release-please-manifest.json