Show a flag emoji next to each currency code

Derives a country flag from the ISO 4217 code's country prefix, with
an explicit map of country codes for currencies shared by multiple
countries (XAF, XCD, XCG, XOF, XPF) showing every issuing country's
flag, and the EU flag as a special case for EUR.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01QpjMKWGoiT5aJBzhxvXkwp

iosApp/iosApp/ContentView.swift

@@ -124,7 +124,7 @@ struct ContentView: View {
 
                 ForEach(Array(state.fiatRows.enumerated()), id: \.element.code) { index, row in
                     amountRow(
-                        label: row.code,
+                        label: currencyFieldLabel(for: row.code),
                         value: row.amount,
                         keyboardType: .decimalPad,
                         sanitize: sanitizeDecimalInput,
@@ -311,6 +311,13 @@ private struct NumericField: View {
     }
 }
 
+private func currencyFieldLabel(for code: String) -> String {
+    if let flag = CurrencyFlagKt.currencyFlagEmoji(code: code) {
+        return "\(flag) \(code)"
+    }
+    return code
+}
+
 /// Unlike the shared Kotlin `sanitizeDecimalInput` (which never sees grouping separators, since
 /// Compose's VisualTransformation never feeds its grouped display back into the real value),
 /// `NumericField`'s single `text` buffer *is* the grouped display, re-fed through this on every

iosApp/iosApp/CurrencyPickerSheet.swift

@@ -81,16 +81,21 @@ struct CurrencyPickerSheet: View {
     }
 
     private func currencyLabel(for info: CurrencyInfo) -> String {
+        let text: String
         if info.code == localeCurrencyCode {
-            return IosLocalizationKt.localizedFormattedString(
+            text = IosLocalizationKt.localizedFormattedString(
                 resource: MR.strings.shared.currency_option_label_local,
                 args: [info.code, info.displayName]
             )
         } else {
-            return IosLocalizationKt.localizedFormattedString(
+            text = IosLocalizationKt.localizedFormattedString(
                 resource: MR.strings.shared.currency_option_label,
                 args: [info.code, info.displayName]
             )
         }
+        if let flag = CurrencyFlagKt.currencyFlagEmoji(code: info.code) {
+            return "\(flag) \(text)"
+        }
+        return text
     }
 }