fix: Show Processing status orders in Pending Payment tab

- Modified OrdersController to include Processing (legacy) status in pending tab
- Updated badge count to include Processing orders in PendingPaymentCount
- Added database reset script that preserves bot tokens and integrations

Processing status (OrderStatus=20) is a legacy unpaid status that should be visible
in the Pending Payment workflow to allow staff to retry failed payment creation.

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

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

LittleShop/Areas/Admin/Controllers/OrdersController.cs

@@ -23,7 +23,10 @@ public class OrdersController : Controller
         switch (tab.ToLower())
         {
             case "pending":
-                ViewData["Orders"] = await _orderService.GetOrdersByStatusAsync(LittleShop.Enums.OrderStatus.PendingPayment);
+                // Include both PendingPayment and legacy Processing status (orders stuck without payment)
+                var pendingOrders = await _orderService.GetOrdersByStatusAsync(LittleShop.Enums.OrderStatus.PendingPayment);
+                var processingOrders = await _orderService.GetOrdersByStatusAsync(LittleShop.Enums.OrderStatus.Processing);
+                ViewData["Orders"] = pendingOrders.Concat(processingOrders).OrderByDescending(o => o.CreatedAt);
                 ViewData["TabTitle"] = "Pending Payment";
                 break;
             case "accept":