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

backend/api/track4/request_ip.go

@@ -0,0 +1,17 @@
+package track4
+
+import (
+	"context"
+	"net/http"
+
+	httpmiddleware "github.com/explorer/backend/libs/go-http-middleware"
+)
+
+type roleManager interface {
+	IsIPWhitelisted(ctx context.Context, operatorAddress string, ipAddress string) (bool, error)
+	LogOperatorEvent(ctx context.Context, eventType string, chainID *int, operatorAddress string, targetResource string, action string, details map[string]interface{}, ipAddress string, userAgent string) error
+}
+
+func clientIPAddress(r *http.Request) string {
+	return httpmiddleware.ClientIP(r)
+}