feat: Implement Discount Product and Shopping Cart functionalities

- Added UpdateDiscountProductCommandValidator for validating discount product updates.
- Created GetDiscountProductByIdQuery and its handler for retrieving discount product details by ID.
- Implemented GetDiscountProductsQuery and handler for fetching a list of discount products with filtering options.
- Developed AddToCartCommand and handler for adding products to the shopping cart.
- Implemented ClearCartCommand and handler for clearing the shopping cart.
- Created RemoveFromCartCommand and handler for removing items from the cart.
- Added UpdateCartItemCountCommand and handler for updating the quantity of items in the cart.
- Developed GetUserCartQuery and handler for retrieving the user's shopping cart details.
- Implemented Product Tag functionalities including assigning tags to products, creating, updating, and deleting tags.
- Added queries for fetching all tags and products by tag.

src/BackOffice.BFF.Application/CommissionCQ/Queries/GetWithdrawalReports/GetWithdrawalReportsQuery.cs

@@ -0,0 +1,181 @@
+namespace BackOffice.BFF.Application.CommissionCQ.Queries.GetWithdrawalReports;
+
+/// <summary>
+/// گزارش برداشت‌ها بر اساس بازه زمانی و دسته‌بندی
+/// </summary>
+public record GetWithdrawalReportsQuery : IRequest<GetWithdrawalReportsResponseDto>
+{
+    /// <summary>
+    /// تاریخ شروع (اختیاری - پیش‌فرض: 30 روز قبل)
+    /// </summary>
+    public DateTime? StartDate { get; init; }
+
+    /// <summary>
+    /// تاریخ پایان (اختیاری - پیش‌فرض: امروز)
+    /// </summary>
+    public DateTime? EndDate { get; init; }
+
+    /// <summary>
+    /// نوع دوره گزارش: 1=روزانه, 2=هفتگی, 3=ماهانه
+    /// </summary>
+    public ReportPeriodType PeriodType { get; init; } = ReportPeriodType.Daily;
+
+    /// <summary>
+    /// فیلتر وضعیت (اختیاری)
+    /// </summary>
+    public int? Status { get; init; }
+
+    /// <summary>
+    /// فیلتر شناسه کاربر (اختیاری)
+    /// </summary>
+    public long? UserId { get; init; }
+}
+
+/// <summary>
+/// نوع دسته‌بندی گزارش
+/// </summary>
+public enum ReportPeriodType
+{
+    /// <summary>
+    /// روزانه
+    /// </summary>
+    Daily = 1,
+
+    /// <summary>
+    /// هفتگی
+    /// </summary>
+    Weekly = 2,
+
+    /// <summary>
+    /// ماهانه
+    /// </summary>
+    Monthly = 3
+}
+
+/// <summary>
+/// پاسخ گزارش برداشت‌ها
+/// </summary>
+public class GetWithdrawalReportsResponseDto
+{
+    /// <summary>
+    /// گزارش‌های هر دوره
+    /// </summary>
+    public List<PeriodReportDto> PeriodReports { get; set; } = new();
+
+    /// <summary>
+    /// خلاصه کل گزارش
+    /// </summary>
+    public WithdrawalSummaryDto Summary { get; set; } = new();
+}
+
+/// <summary>
+/// گزارش یک دوره زمانی
+/// </summary>
+public class PeriodReportDto
+{
+    /// <summary>
+    /// برچسب دوره (مثلاً "2025-01-15" یا "هفته 3" یا "فروردین 1404")
+    /// </summary>
+    public string PeriodLabel { get; set; } = string.Empty;
+
+    /// <summary>
+    /// تاریخ شروع دوره
+    /// </summary>
+    public DateTime StartDate { get; set; }
+
+    /// <summary>
+    /// تاریخ پایان دوره
+    /// </summary>
+    public DateTime EndDate { get; set; }
+
+    /// <summary>
+    /// تعداد کل درخواست‌ها
+    /// </summary>
+    public int TotalRequests { get; set; }
+
+    /// <summary>
+    /// تعداد در انتظار
+    /// </summary>
+    public int PendingCount { get; set; }
+
+    /// <summary>
+    /// تعداد تایید شده
+    /// </summary>
+    public int ApprovedCount { get; set; }
+
+    /// <summary>
+    /// تعداد رد شده
+    /// </summary>
+    public int RejectedCount { get; set; }
+
+    /// <summary>
+    /// تعداد تکمیل شده
+    /// </summary>
+    public int CompletedCount { get; set; }
+
+    /// <summary>
+    /// تعداد ناموفق
+    /// </summary>
+    public int FailedCount { get; set; }
+
+    /// <summary>
+    /// مبلغ کل (ریال)
+    /// </summary>
+    public long TotalAmount { get; set; }
+
+    /// <summary>
+    /// مبلغ پرداخت شده (ریال)
+    /// </summary>
+    public long PaidAmount { get; set; }
+
+    /// <summary>
+    /// مبلغ در انتظار (ریال)
+    /// </summary>
+    public long PendingAmount { get; set; }
+}
+
+/// <summary>
+/// خلاصه کل گزارش برداشت‌ها
+/// </summary>
+public class WithdrawalSummaryDto
+{
+    /// <summary>
+    /// تعداد کل درخواست‌ها
+    /// </summary>
+    public int TotalRequests { get; set; }
+
+    /// <summary>
+    /// مبلغ کل درخواست‌ها (ریال)
+    /// </summary>
+    public long TotalAmount { get; set; }
+
+    /// <summary>
+    /// مبلغ کل پرداخت شده (ریال)
+    /// </summary>
+    public long TotalPaid { get; set; }
+
+    /// <summary>
+    /// مبلغ کل در انتظار (ریال)
+    /// </summary>
+    public long TotalPending { get; set; }
+
+    /// <summary>
+    /// مبلغ کل رد شده (ریال)
+    /// </summary>
+    public long TotalRejected { get; set; }
+
+    /// <summary>
+    /// میانگین مبلغ درخواست (ریال)
+    /// </summary>
+    public long AverageAmount { get; set; }
+
+    /// <summary>
+    /// تعداد کاربران منحصر به فرد
+    /// </summary>
+    public int UniqueUsers { get; set; }
+
+    /// <summary>
+    /// درصد موفقیت (0-100)
+    /// </summary>
+    public decimal SuccessRate { get; set; }
+}

src/BackOffice.BFF.Application/CommissionCQ/Queries/GetWithdrawalReports/GetWithdrawalReportsQueryHandler.cs

@@ -0,0 +1,78 @@
+using BackOffice.BFF.Commission.Protobuf;
+using Google.Protobuf.WellKnownTypes;
+
+namespace BackOffice.BFF.Application.CommissionCQ.Queries.GetWithdrawalReports;
+
+public class GetWithdrawalReportsQueryHandler : IRequestHandler<GetWithdrawalReportsQuery, GetWithdrawalReportsResponseDto>
+{
+    private readonly IApplicationContractContext _context;
+
+    public GetWithdrawalReportsQueryHandler(IApplicationContractContext context)
+    {
+        _context = context;
+    }
+
+    public async Task<GetWithdrawalReportsResponseDto> Handle(GetWithdrawalReportsQuery request, CancellationToken cancellationToken)
+    {
+        var grpcRequest = new GetWithdrawalReportsRequest
+        {
+            PeriodType = (int)request.PeriodType
+        };
+
+        // تنظیم بازه زمانی
+        if (request.StartDate.HasValue)
+        {
+            grpcRequest.StartDate = Timestamp.FromDateTime(request.StartDate.Value.ToUniversalTime());
+        }
+
+        if (request.EndDate.HasValue)
+        {
+            grpcRequest.EndDate = Timestamp.FromDateTime(request.EndDate.Value.ToUniversalTime());
+        }
+
+        // فیلتر وضعیت
+        if (request.Status.HasValue)
+        {
+            grpcRequest.Status = request.Status.Value;
+        }
+
+        // فیلتر کاربر
+        if (request.UserId.HasValue)
+        {
+            grpcRequest.UserId = request.UserId.Value;
+        }
+
+        var response = await _context.Commissions.GetWithdrawalReportsAsync(grpcRequest, cancellationToken: cancellationToken);
+
+        // تبدیل به DTO
+        return new GetWithdrawalReportsResponseDto
+        {
+            PeriodReports = response.PeriodReports.Select(p => new PeriodReportDto
+            {
+                PeriodLabel = p.PeriodLabel,
+                StartDate = p.StartDate.ToDateTime(),
+                EndDate = p.EndDate.ToDateTime(),
+                TotalRequests = p.TotalRequests,
+                PendingCount = p.PendingCount,
+                ApprovedCount = p.ApprovedCount,
+                RejectedCount = p.RejectedCount,
+                CompletedCount = p.CompletedCount,
+                FailedCount = p.FailedCount,
+                TotalAmount = p.TotalAmount,
+                PaidAmount = p.PaidAmount,
+                PendingAmount = p.PendingAmount
+            }).ToList(),
+            Summary = new WithdrawalSummaryDto
+            {
+                TotalRequests = response.Summary.TotalRequests,
+                TotalAmount = response.Summary.TotalAmount,
+                TotalPaid = response.Summary.TotalPaid,
+                TotalPending = response.Summary.TotalPending,
+                TotalRejected = response.Summary.TotalRejected,
+                AverageAmount = response.Summary.AverageAmount,
+                UniqueUsers = response.Summary.UniqueUsers,
+                SuccessRate = (decimal)response.Summary.SuccessRate
+            }
+        };
+    }
+}