Feature: Enhanced order display and basket summary

1. Basket Summary Below Navigation
   - Welcome message now shows basket items and total
   - Format: "🛒 Basket: X item(s) - £X.XX"
   - Only shown when basket has items

2. Order Display Improvements
   - Order GUID replaced with friendly reference (last 8 chars: #XXXXXXXX)
   - Added "View Payment Details" button for pending payment orders
   - Button shows QR code, amount, address, and time until expiry
   - Variants now properly displayed in order items (already working via commit 330116e)

3. Payment Details View (New Feature)
   - HandleViewPayment: Shows payment info with QR code
   - Displays: Currency, amount, address, expiry time
   - Shows time remaining until payment expires
   - QR code generation for easy mobile payment
   - OrderDetailsMenu: Context-aware navigation buttons

4. Postal Address Auto-Load (Verified Working)
   - Checkout automatically detects saved addresses
   - Offers to use saved address with preview
   - One-click selection or option to enter new address
   - SavedAddress copied to OrderFlow when selected

Technical Changes:
- MessageFormatter.FormatWelcome: Added optional cart parameter
- MessageFormatter.FormatOrder: Uses friendly order reference
- MenuBuilder.OrderDetailsMenu: New menu with payment button
- CallbackHandler.HandleViewPayment: Payment details with QR
- CallbackHandler.HandleMainMenu: Pass cart to welcome formatter

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

TeleBot/TeleBot/Handlers/CallbackHandler.cs

@@ -172,6 +172,10 @@ namespace TeleBot.Handlers
                         await HandleViewOrder(bot, callbackQuery.Message, session, Guid.Parse(data[1]), callbackQuery.From);
                         break;
 
+                    case "payment":
+                        await HandleViewPayment(bot, callbackQuery.Message, session, Guid.Parse(data[1]), callbackQuery.From);
+                        break;
+
                     case "reviews":
                         await HandleViewReviews(bot, callbackQuery.Message, session);
                         break;
@@ -256,7 +260,7 @@ namespace TeleBot.Handlers
             // Send new message at bottom instead of editing old one
             await bot.SendTextMessageAsync(
                 message.Chat.Id,
-                MessageFormatter.FormatWelcome(true),
+                MessageFormatter.FormatWelcome(true, session.Cart),
                 parseMode: Telegram.Bot.Types.Enums.ParseMode.Markdown,
                 replyMarkup: MenuBuilder.MainMenu()
             );
@@ -1166,12 +1170,91 @@ namespace TeleBot.Handlers
                 message.Chat.Id,
                 MessageFormatter.FormatOrder(order),
                 parseMode: Telegram.Bot.Types.Enums.ParseMode.Markdown,
-                replyMarkup: MenuBuilder.MainMenu()
+                replyMarkup: _menuBuilder.OrderDetailsMenu(order)
             );
 
             session.State = SessionState.ViewingOrder;
         }
-        
+
+        private async Task HandleViewPayment(ITelegramBotClient bot, Message message, UserSession session, Guid orderId, User telegramUser)
+        {
+            var order = await _shopService.GetCustomerOrderAsync(
+                orderId,
+                telegramUser.Id,
+                telegramUser.Username ?? "",
+                $"{telegramUser.FirstName} {telegramUser.LastName}".Trim(),
+                telegramUser.FirstName ?? "",
+                telegramUser.LastName ?? ""
+            );
+
+            if (order == null)
+            {
+                await bot.AnswerCallbackQueryAsync("", "Order not found", showAlert: true);
+                return;
+            }
+
+            var payment = order.Payments.FirstOrDefault(p => p.Status == 0); // Find pending payment
+            if (payment == null)
+            {
+                await bot.SendTextMessageAsync(
+                    message.Chat.Id,
+                    "No pending payment found for this order.",
+                    replyMarkup: _menuBuilder.OrderDetailsMenu(order)
+                );
+                return;
+            }
+
+            var paymentText = MessageFormatter.FormatPayment(payment);
+
+            // Calculate time until expiry
+            var timeUntilExpiry = payment.ExpiresAt - DateTime.UtcNow;
+            if (timeUntilExpiry.TotalMinutes > 0)
+            {
+                paymentText += $"\n⏰ *Time remaining:* {timeUntilExpiry.Hours}h {timeUntilExpiry.Minutes}m";
+            }
+
+            // Generate QR code if enabled
+            if (_configuration.GetValue<bool>("Features:EnableQRCodes"))
+            {
+                try
+                {
+                    using var qrGenerator = new QRCodeGenerator();
+                    var qrCodeData = qrGenerator.CreateQrCode(payment.WalletAddress, QRCodeGenerator.ECCLevel.Q);
+                    using var qrCode = new PngByteQRCode(qrCodeData);
+                    var qrCodeBytes = qrCode.GetGraphic(10);
+
+                    using var stream = new System.IO.MemoryStream(qrCodeBytes);
+                    await bot.SendPhotoAsync(
+                        message.Chat.Id,
+                        InputFile.FromStream(stream, "payment_qr.png"),
+                        caption: paymentText,
+                        parseMode: Telegram.Bot.Types.Enums.ParseMode.Markdown,
+                        replyMarkup: _menuBuilder.OrderDetailsMenu(order)
+                    );
+                }
+                catch (Exception ex)
+                {
+                    _logger.LogError(ex, "Failed to generate QR code for payment view");
+                    // Fall back to text-only
+                    await bot.SendTextMessageAsync(
+                        message.Chat.Id,
+                        paymentText,
+                        parseMode: Telegram.Bot.Types.Enums.ParseMode.Markdown,
+                        replyMarkup: _menuBuilder.OrderDetailsMenu(order)
+                    );
+                }
+            }
+            else
+            {
+                await bot.SendTextMessageAsync(
+                    message.Chat.Id,
+                    paymentText,
+                    parseMode: Telegram.Bot.Types.Enums.ParseMode.Markdown,
+                    replyMarkup: _menuBuilder.OrderDetailsMenu(order)
+                );
+            }
+        }
+
         private async Task HandlePrivacySettings(ITelegramBotClient bot, Message message, UserSession session, string? setting)
         {
             if (setting != null)

TeleBot/TeleBot/UI/MenuBuilder.cs

@@ -206,6 +206,28 @@ namespace TeleBot.UI
             return new InlineKeyboardMarkup(buttons);
         }
 
+        public InlineKeyboardMarkup OrderDetailsMenu(Order order)
+        {
+            var buttons = new List<InlineKeyboardButton[]>();
+
+            // If order has pending payment, show payment details button
+            if (order.Status == 0 && order.Payments.Any(p => p.Status == 0)) // PendingPayment order with pending payment
+            {
+                buttons.Add(new[]
+                {
+                    InlineKeyboardButton.WithCallbackData("💳 View Payment Details", $"payment:{order.Id}")
+                });
+            }
+
+            buttons.Add(new[]
+            {
+                InlineKeyboardButton.WithCallbackData("⬅️ Back to Orders", "orders"),
+                InlineKeyboardButton.WithCallbackData("🏠 Main Menu", "menu")
+            });
+
+            return new InlineKeyboardMarkup(buttons);
+        }
+
         public InlineKeyboardMarkup CartMenu(ShoppingCart cart)
         {
             var buttons = new List<InlineKeyboardButton[]>();

TeleBot/TeleBot/UI/MessageFormatter.cs

@@ -8,24 +8,36 @@ namespace TeleBot.UI
 {
     public static class MessageFormatter
     {
-        public static string FormatWelcome(bool isReturning)
+        public static string FormatWelcome(bool isReturning, ShoppingCart? cart = null)
         {
+            var message = "";
+
             if (isReturning)
             {
-                return $"🔒 *Welcome back to {BotConfig.BrandName}*\n\n" +
+                message = $"🔒 *Welcome back to {BotConfig.BrandName}*\n\n" +
                        "Your privacy is our priority. All sessions are ephemeral by default.\n\n" +
                        "🖼️ *New Feature:* Browse products with beautiful image carousels!\n\n" +
                        "How can I help you today?";
             }
-            
+            else
-            return $"🔒 *Welcome to {BotConfig.BrandName}*\n\n" +
+            {
-                   "🛡️ *Your Privacy Matters:*\n" +
+                message = $"🔒 *Welcome to {BotConfig.BrandName}*\n\n" +
-                   "• No account required\n" +
+                       "🛡️ *Your Privacy Matters:*\n" +
-                   "• Ephemeral sessions by default\n" +
+                       "• No account required\n" +
-                   "• Optional PGP encryption for shipping\n" +
+                       "• Ephemeral sessions by default\n" +
-                   "• Cryptocurrency payments only\n\n" +
+                       "• Optional PGP encryption for shipping\n" +
-                   "🖼️ *New Feature:* Browse products with beautiful image carousels!\n\n" +
+                       "• Cryptocurrency payments only\n\n" +
-                   "Use /help for available commands or choose from the menu below:";
+                       "🖼️ *New Feature:* Browse products with beautiful image carousels!\n\n" +
+                       "Use /help for available commands or choose from the menu below:";
+            }
+
+            // Add basket summary if items present
+            if (cart != null && !cart.IsEmpty())
+            {
+                message += $"\n\n🛒 *Basket:* {cart.GetTotalItems()} item(s) - £{cart.GetTotalAmount():F2}";
+            }
+
+            return message;
         }
         
         public static string FormatCategories(List<Category> categories)
@@ -271,9 +283,12 @@ namespace TeleBot.UI
         public static string FormatOrder(Order order)
         {
             var sb = new StringBuilder();
-            
+
+            // Generate friendly order reference from GUID (last 8 characters)
+            var orderRef = order.Id.ToString().Substring(order.Id.ToString().Length - 8).ToUpper();
+
             sb.AppendLine($"📦 *Order Details*\n");
-            sb.AppendLine($"*Order ID:* `{order.Id}`");
+            sb.AppendLine($"*Order Reference:* `#{orderRef}`");
             sb.AppendLine($"*Status:* {FormatOrderStatus(order.Status)}");
             sb.AppendLine($"*Total:* £{order.TotalAmount:F2}");
             sb.AppendLine($"*Created:* {order.CreatedAt:yyyy-MM-dd HH:mm} UTC");