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

frontend/package.json

@@ -35,6 +35,7 @@
     "cmdk": "^1.1.1",
     "geist": "^1.7.0",
     "lucide-react": "^0.575.0",
+    "monaco-editor": "^0.55.1",
     "motion": "^12.38.0",
     "next-themes": "^0.4.6",
     "radix-ui": "^1.4.3",