chore(bills): allow rendering USDF conditionally as a bill for Bill Designer

apps/flipcash/core/src/main/kotlin/com/flipcash/app/core/bill/BillState.kt

@@ -9,6 +9,7 @@ import com.getcode.opencode.internal.manager.VerifiedState
 import com.getcode.opencode.model.financial.Fiat
 import com.getcode.opencode.model.financial.LocalFiat
 import com.getcode.opencode.model.financial.Token
+import com.getcode.opencode.model.financial.usdf
 import com.getcode.solana.keys.Mint
 import kotlin.time.Duration
 
@@ -125,6 +126,7 @@ sealed interface Bill {
         val kind: Kind = Kind.cash,
         val verifiedState: VerifiedState? = null,
         val nonce: List<Byte> = emptyList(),
+        val renderAsBill: Boolean = token.address != Mint.usdf,
     ) : Bill {
         override val canFlip: Boolean = false
     }

apps/flipcash/shared/bill-customization/src/main/kotlin/com/flipcash/app/bill/customization/internal/InternalBillPlaygroundController.kt

@@ -138,7 +138,8 @@ class InternalBillPlaygroundController(
             token = token.copy(billCustomizations = customizations),
             amount = demoAmount,
             disableGestures = true,
-            data = payloadInfo.codeData.toList()
+            data = payloadInfo.codeData.toList(),
+            renderAsBill = true,
         )
 
         _state.update { current ->

apps/flipcash/shared/bills/src/main/kotlin/com/flipcash/app/bills/RenderedBill.kt

@@ -22,20 +22,24 @@ fun RenderedBill(
     modifier: Modifier = Modifier,
     bill: Bill,
 ) {
-    if (bill.token.address == Mint.usdf) {
-        GoldBar(
-            modifier = modifier
-                .padding(horizontal = CodeTheme.dimens.inset),
-            payloadData = bill.data,
-            amount = bill.amount.underlyingTokenAmount,
-        )
-    } else {
-        CashBill(
-            modifier = modifier,
-            payloadData = bill.data,
-            amount = bill.amount,
-            token = bill.token
-        )
+    when (bill) {
+        is Bill.Cash -> {
+            if (bill.renderAsBill) {
+                CashBill(
+                    modifier = modifier,
+                    payloadData = bill.data,
+                    amount = bill.amount,
+                    token = bill.token
+                )
+            } else {
+                GoldBar(
+                    modifier = modifier
+                        .padding(horizontal = CodeTheme.dimens.inset),
+                    payloadData = bill.data,
+                    amount = bill.amount.underlyingTokenAmount,
+                )
+            }
+        }
     }
 }