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-api-client/client.ts

@@ -1,4 +1,5 @@
 import axios, { AxiosInstance, AxiosRequestConfig, AxiosResponse } from 'axios'
+import { resolveExplorerApiBase } from './api-base'
 
 export interface ApiResponse<T> {
   data: T
@@ -21,9 +22,9 @@ export interface ApiError {
   }
 }
 
-export function createApiClient(baseURL: string = process.env.NEXT_PUBLIC_API_URL || 'http://localhost:8080', getApiKey?: () => string | null) {
+export function createApiClient(baseURL?: string, getApiKey?: () => string | null) {
   const client = axios.create({
-    baseURL,
+    baseURL: baseURL || resolveExplorerApiBase(),
     timeout: 30000,
     headers: { 'Content-Type': 'application/json' },
   })