feat(api): .NET 10 multi-tenant REST API

Full backend implementation:
- Multi-tenant cafe/restaurant management (menus, orders, tables, staff)
- POS order flow with ZarinPal and Snappfood payment integration
- OTP authentication via Kavenegar SMS
- QR digital menu with public discover/finder endpoints
- Customer loyalty, coupons, CRM
- PostgreSQL via EF Core, Redis for caching/sessions
- Background jobs, webhook handlers
- Full migration history

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

src/Meezi.API/Models/Tap30/Tap30Dtos.cs

@@ -0,0 +1,30 @@
+namespace Meezi.API.Models.Tap30;
+
+public record Tap30WebhookOrder(
+    string OrderId,
+    string VendorId,
+    Tap30Customer? Customer,
+    decimal Total,
+    string? PaymentMethod,
+    bool? IsPaid,
+    decimal? Commission,
+    string? DeliveryType,
+    int? EstimatedMinutes,
+    string? DriverName,
+    string? DriverPhone,
+    string? Status,
+    IReadOnlyList<Tap30WebhookItem>? Items);
+
+public record Tap30Customer(
+    string? Name,
+    string? Phone,
+    string? Address,
+    double? Lat,
+    double? Lng);
+
+public record Tap30WebhookItem(
+    string? Sku,
+    string Name,
+    int Quantity,
+    decimal UnitPrice,
+    string? Notes);