feat: exclude non-busy contracts from strict network check

internal/handler/within_network.go

@@ -2,7 +2,24 @@ package handler
 
 import "context"
 
+// Add whatever is the in:
+// Sarafu Registry AND (Celo Allowed Gas Token OR Known Busy Token e.g. USDGLO)
+var busyContracts = map[string]bool{
+	// cUSD
+	"0x765DE816845861e75A25fCA122bb6898B8B1282a": true,
+	// USDT
+	"0x48065fbBE25f71C9282ddf5e1cD6D6A887483D5e": true,
+	// cKES
+	"0x456a3D042C0DbD3db53D5489e98dFb038553B0d0": true,
+	// USDC
+	"0xcebA9300f2b948710d2653dD7B07f33A8B32118C": true,
+}
+
 func (hc *HandlerContainer) checkWithinNetwork(ctx context.Context, contractAddress string, from string, to string) (bool, error) {
+	if !busyContracts[contractAddress] {
+		return true, nil
+	}
+
 	exists, err := hc.cache.ExistsNetwork(ctx, contractAddress, from, to)
 	if err != nil {
 		return false, err