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

deployment/common/systemd-api-service.example

@@ -13,6 +13,13 @@ Environment=PORT=8080
 Environment=DB_HOST=localhost
 Environment=DB_NAME=explorer
 Environment=CHAIN_ID=138
+Environment=RPC_URL=https://rpc-http-pub.d-bis.org
+Environment=TOKEN_AGGREGATION_BASE_URL=http://127.0.0.1:3000
+Environment=BLOCKSCOUT_INTERNAL_URL=http://127.0.0.1:4000
+Environment=EXPLORER_PUBLIC_BASE=https://explorer.d-bis.org
+Environment=OPERATOR_SCRIPTS_ROOT=/opt/explorer/scripts
+Environment=OPERATOR_SCRIPT_ALLOWLIST=check-health.sh,check-bridges.sh
+Environment=OPERATOR_SCRIPT_TIMEOUT_SEC=120
 ExecStart=/opt/explorer/bin/api-server
 Restart=on-failure
 RestartSec=5