feat: explorer API, wallet, CCIP scripts, and config refresh

- Backend REST/gateway/track routes, analytics, Blockscout proxy paths.
- Frontend wallet and liquidity surfaces; MetaMask token list alignment.
- Deployment docs, verification scripts, address inventory updates.

Check: go build ./... under backend/ (pass).
Made-with: Cursor

frontend/public/thirdparty/README.md

@@ -0,0 +1,17 @@
+# Third-party bundles (optional)
+
+## Mermaid (Visual Command Center)
+
+`chain138-command-center.html` loads Mermaid from jsDelivr by default. If your explorer host blocks external script origins (CSP) or you need a fully offline doc path:
+
+1. From repo root:
+   ```bash
+   bash explorer-monorepo/scripts/vendor-mermaid-for-command-center.sh
+   ```
+2. Edit `chain138-command-center.html` and change the Mermaid `<script src="...">` line to:
+   ```html
+   <script src="/thirdparty/mermaid.min.js"></script>
+   ```
+3. Deploy with `deploy-frontend-to-vmid5000.sh` — it copies `thirdparty/mermaid.min.js` when the file exists.
+
+The minified file is gitignored (~3.3 MB); do not commit it.