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/src/pages/_app.tsx

@@ -1,7 +1,11 @@
 import type { AppProps } from 'next/app'
 import '../app/globals.css'
+import ExplorerChrome from '@/components/common/ExplorerChrome'
 
 export default function App({ Component, pageProps }: AppProps) {
-  return <Component {...pageProps} />
+  return (
+    <ExplorerChrome>
+      <Component {...pageProps} />
+    </ExplorerChrome>
+  )
 }
-