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/rest/validation.go

@@ -41,6 +41,14 @@ func isValidAddress(address string) bool {
 	return err == nil
 }
 
+func normalizeHash(hash string) string {
+	return strings.ToLower(strings.TrimSpace(hash))
+}
+
+func normalizeAddress(address string) string {
+	return strings.ToLower(strings.TrimSpace(address))
+}
+
 // validateBlockNumber validates and parses block number
 func validateBlockNumber(blockStr string) (int64, error) {
 	blockNumber, err := strconv.ParseInt(blockStr, 10, 64)