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

docs/DEPLOYMENT_COMPLETE.md

@@ -25,7 +25,7 @@
 - ✅ `/api/v1/auth/nonce` - Endpoint active
 - ✅ `/api/v1/auth/wallet` - Endpoint active
 - ✅ JWT token generation configured
-- ⚠️ Requires database for nonce storage
+- ⚠️ Requires database plus the `run-migration-0010.sh` helper for nonce storage
 
 ### 4. Feature Flags
 - ✅ `/api/v1/features` - Working
@@ -120,7 +120,7 @@ DB_NAME=explorer
 # Set correct password
 export DB_PASSWORD='your-actual-password'
 
-# Run migration
+# Run migration helper
 bash scripts/run-migration-0010.sh
 
 # Restart server
@@ -143,6 +143,8 @@ curl -X POST http://localhost:8080/api/v1/auth/wallet \
   -d '{"address":"...","signature":"...","nonce":"..."}'
 ```
 
+If the nonce request returns `service_unavailable`, mentions `wallet_nonces`, or the wallet signature popup shows `Nonce: undefined`, the backend is still missing the wallet-auth schema. Run `bash scripts/run-migration-0010.sh`, restart the backend, and retry. The helper auto-detects standalone explorer DB vs shared Blockscout DB and uses the safe migration path for each.
+
 ### 3. Approve Users
 ```bash
 # Approve for Track 2
@@ -217,4 +219,3 @@ The tiered architecture has been **successfully deployed and tested**. The API s
 5. Production deployment
 
 **Deployment Status: ✅ COMPLETE**
-