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/Printing/PrintDtos.cs

@@ -0,0 +1,36 @@
+namespace Meezi.API.Models.Printing;
+
+public record BranchPrintSettingsDto(
+    string BranchId,
+    string? ReceiptPrinterIp,
+    int? ReceiptPrinterPort,
+    string? KitchenPrinterIp,
+    int? KitchenPrinterPort,
+    int PaperWidthMm,
+    bool AutoCutEnabled,
+    string? ReceiptHeader,
+    string? ReceiptFooter,
+    string? WifiPassword,
+    string? PosDeviceIp,
+    int? PosDevicePort);
+
+public record PatchBranchPrintSettingsRequest(
+    string? ReceiptPrinterIp,
+    int? ReceiptPrinterPort,
+    string? KitchenPrinterIp,
+    int? KitchenPrinterPort,
+    int? PaperWidthMm,
+    bool? AutoCutEnabled,
+    string? ReceiptHeader,
+    string? ReceiptFooter,
+    string? WifiPassword,
+    string? PosDeviceIp,
+    int? PosDevicePort);
+
+public record PosPaymentRequest(string OrderId, decimal Amount);
+
+public record PosPaymentResultDto(bool Sent, bool Skipped, string? Message);
+
+public record TestPrintRequest(string PrinterIp, int Port = 9100);
+
+public record PrintJobResultDto(bool Printed, string? ErrorCode, string? Message);