# Third-party bundles (optional)

## Mermaid (Visual Command Center)

`chain138-command-center.html` loads Mermaid from **`/thirdparty/mermaid.min.js` first**. If the local bundle is missing, the page runtime loads jsDelivr as a fallback.

To vendor Mermaid for offline / CSP-locked hosts:

1. From repo root:
   ```bash
   bash explorer-monorepo/scripts/vendor-mermaid-for-command-center.sh
   ```
2. Deploy with `deploy-next-frontend-to-vmid5000.sh` — it copies `thirdparty/mermaid.min.js` when the file exists.

Before deploy, refresh bundle metadata:

```bash
bash explorer-monorepo/scripts/refresh-chain138-command-center-meta.sh
```

The minified Mermaid file is gitignored (~3.3 MB); do not commit it.