fix: retry StoreKit tip product lookup

FuelBoard/SettingsView.swift

@@ -721,7 +721,7 @@ final class TipStore: ObservableObject {
         // (or restored transactions) are picked up.
         do {
             let fetched = try await Product.products(for: Self.tiers.map(\.id))
-            products = Dictionary(uniqueKeysWithValues: fetched.map { ($0.id, $0) })
+            merge(fetched)
         } catch {
             // No products yet (sideloaded build) — the buttons still show the
             // intended prices and report purchase attempts gracefully.
@@ -729,24 +729,37 @@ final class TipStore: ObservableObject {
         }
     }
 
+    private func merge(_ fetched: [Product]) {
+        products.merge(Dictionary(uniqueKeysWithValues: fetched.map { ($0.id, $0) })) { _, new in new }
+    }
+
+    private func product(for tier: TipTier) async throws -> Product? {
+        if let product = products[tier.id] { return product }
+
+        // TestFlight/App Store Connect product availability can lag the Settings
+        // onAppear load. Re-query the tapped tier before falling back so a newly
+        // approved IAP opens the system purchase sheet instead of showing stale
+        // "not available" copy.
+        let fetched = try await Product.products(for: [tier.id])
+        merge(fetched)
+        return fetched.first { $0.id == tier.id }
+    }
+
     func purchase(_ tier: TipTier) async {
         guard !purchaseInProgress else { return }
         purchaseInProgress = true
         defer { purchaseInProgress = false }
 
-        // If the product hasn't loaded (e.g. not configured in App Store
-        // Connect yet), still allow the attempt so the user sees a clear
-        // outcome rather than a dead button.
-        guard let product = products[tier.id] else {
-            showOutcome(
-                NSLocalizedString("The tip isn't available in this build yet — check back after an App Store release.", comment: ""),
-                icon: "info.circle.fill",
-                tint: Color(.secondaryLabel)
-            )
-            return
-        }
-
         do {
+            guard let product = try await product(for: tier) else {
+                showOutcome(
+                    NSLocalizedString("This tip isn't available from the App Store yet. Please try again shortly.", comment: ""),
+                    icon: "info.circle.fill",
+                    tint: Color(.secondaryLabel)
+                )
+                return
+            }
+
             let result = try await product.purchase()
             switch result {
             case .success(let verification):