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/Services/OrderService.cs

@@ -616,7 +616,8 @@ public class OrderService : IOrderService
 
         var statusCounts = new OrderStatusCountsDto
         {
-            PendingPaymentCount = orders.Count(o => o.Status == OrderStatus.PendingPayment),
+            // Include legacy Processing status in PendingPayment count (orders stuck without payment)
+            PendingPaymentCount = orders.Count(o => o.Status == OrderStatus.PendingPayment || o.Status == OrderStatus.Processing),
             RequiringActionCount = orders.Count(o => o.Status == OrderStatus.PaymentReceived),
             ForPackingCount = orders.Count(o => o.Status == OrderStatus.Accepted),
             DispatchedCount = orders.Count(o => o.Status == OrderStatus.Dispatched),