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/libs/frontend-ui-primitives/Button.tsx

@@ -17,7 +17,7 @@ export function Button({
   return (
     <button
       className={clsx(
-        'font-medium rounded-lg transition-colors',
+        'font-medium rounded-lg transition-colors disabled:cursor-not-allowed disabled:opacity-50',
         {
           'bg-primary-600 text-white hover:bg-primary-700': variant === 'primary',
           'bg-gray-200 text-gray-900 hover:bg-gray-300': variant === 'secondary',
@@ -34,4 +34,3 @@ export function Button({
     </button>
   )
 }
-