fix: resolve issue #3 - Iap coupon

Automated fix by Tony CI v3.
Closes #3

Co-Authored-By: Claude <noreply@anthropic.com>

SportsTime/Features/Paywall/Views/PaywallView.swift

@@ -74,6 +74,7 @@ struct PaywallView: View {
             }
         }
         .storeButton(.visible, for: .restorePurchases)
+        .storeButton(.visible, for: .redeemCode)
         .subscriptionStoreControlStyle(.prominentPicker)
         .subscriptionStoreButtonLabel(.displayName.multiline)
         .onInAppPurchaseStart { product in

SportsTime/Features/Settings/Views/SettingsView.swift

@@ -3,6 +3,7 @@
 //  SportsTime
 //
 
+import StoreKit
 import SwiftUI
 
 struct SettingsView: View {
@@ -11,6 +12,7 @@ struct SettingsView: View {
     @State private var viewModel = SettingsViewModel()
     @State private var showResetConfirmation = false
     @State private var showPaywall = false
+    @State private var showRedeemCode = false
     @State private var showOnboardingPaywall = false
     @State private var showSyncLogs = false
     @State private var isSyncActionInProgress = false
@@ -79,6 +81,7 @@ struct SettingsView: View {
         .sheet(isPresented: $showPaywall) {
             PaywallView(source: "settings")
         }
+        .offerCodeRedemption(isPresented: $showRedeemCode)
         .sheet(isPresented: $showOnboardingPaywall) {
             OnboardingPaywallView(isPresented: $showOnboardingPaywall)
         }
@@ -812,6 +815,13 @@ struct SettingsView: View {
                     Label("Restore Purchases", systemImage: "arrow.clockwise")
                 }
                 .accessibilityIdentifier("settings.restorePurchasesButton")
+
+                Button {
+                    showRedeemCode = true
+                } label: {
+                    Label("Redeem Code", systemImage: "giftcard")
+                }
+                .accessibilityIdentifier("settings.redeemCodeButton")
             }
         } header: {
             Text("Subscription")