feat: Add ClubMembershipCQ - Phase 3 Application Layer

- Implemented 3 Commands with handlers and validators:
  * ActivateClubMembership: Create/reactivate membership
  * DeactivateClubMembership: Deactivate existing membership
  * AssignClubFeature: Assign features to club members

- Implemented 3 Queries with handlers, validators, and DTOs:
  * GetClubMembership: Retrieve single membership by UserId
  * GetAllClubMemberships: List with filtering and pagination
  * GetClubMembershipHistory: Audit trail with full history

- All operations include history tracking via ClubMembershipHistory
- Property names aligned with Domain entity definitions
- 21 new files, ~600 lines of code
- Build successful with 0 errors

src/CMSMicroservice.Application/ClubMembershipCQ/Queries/GetClubMembershipHistory/GetClubMembershipHistoryQuery.cs

@@ -0,0 +1,27 @@
+namespace CMSMicroservice.Application.ClubMembershipCQ.Queries.GetClubMembershipHistory;
+
+/// <summary>
+/// Query برای دریافت تاریخچه تغییرات عضویت باشگاه
+/// </summary>
+public record GetClubMembershipHistoryQuery : IRequest<GetClubMembershipHistoryResponseDto>
+{
+    /// <summary>
+    /// شناسه عضویت (اختیاری)
+    /// </summary>
+    public long? MembershipId { get; init; }
+
+    /// <summary>
+    /// شناسه کاربر (اختیاری)
+    /// </summary>
+    public long? UserId { get; init; }
+
+    /// <summary>
+    /// موقعیت صفحه‌بندی
+    /// </summary>
+    public PaginationState? PaginationState { get; init; }
+
+    /// <summary>
+    /// مرتب‌سازی بر اساس
+    /// </summary>
+    public string? SortBy { get; init; }
+}

src/CMSMicroservice.Application/ClubMembershipCQ/Queries/GetClubMembershipHistory/GetClubMembershipHistoryQueryHandler.cs

@@ -0,0 +1,56 @@
+namespace CMSMicroservice.Application.ClubMembershipCQ.Queries.GetClubMembershipHistory;
+
+public class GetClubMembershipHistoryQueryHandler : IRequestHandler<GetClubMembershipHistoryQuery, GetClubMembershipHistoryResponseDto>
+{
+    private readonly IApplicationDbContext _context;
+
+    public GetClubMembershipHistoryQueryHandler(IApplicationDbContext context)
+    {
+        _context = context;
+    }
+
+    public async Task<GetClubMembershipHistoryResponseDto> Handle(GetClubMembershipHistoryQuery request, CancellationToken cancellationToken)
+    {
+        var query = _context.ClubMembershipHistories
+            .AsNoTracking()
+            .AsQueryable();
+
+        if (request.MembershipId.HasValue)
+        {
+            query = query.Where(x => x.ClubMembershipId == request.MembershipId.Value);
+        }
+
+        if (request.UserId.HasValue)
+        {
+            query = query.Where(x => x.UserId == request.UserId.Value);
+        }
+
+        query = query.ApplyOrder(sortBy: request.SortBy ?? "-Created"); // پیش‌فرض: جدیدترین اول
+
+        var meta = await query.GetMetaData(request.PaginationState, cancellationToken);
+
+        var models = await query
+            .PaginatedListAsync(paginationState: request.PaginationState)
+            .Select(x => new GetClubMembershipHistoryResponseModel
+            {
+                Id = x.Id,
+                ClubMembershipId = x.ClubMembershipId,
+                UserId = x.UserId,
+                OldIsActive = x.OldIsActive,
+                NewIsActive = x.NewIsActive,
+                OldInitialContribution = x.OldInitialContribution,
+                NewInitialContribution = x.NewInitialContribution,
+                Action = x.Action,
+                Reason = x.Reason,
+                PerformedBy = x.PerformedBy,
+                Created = x.Created
+            })
+            .ToListAsync(cancellationToken);
+
+        return new GetClubMembershipHistoryResponseDto
+        {
+            MetaData = meta,
+            Models = models
+        };
+    }
+}

src/CMSMicroservice.Application/ClubMembershipCQ/Queries/GetClubMembershipHistory/GetClubMembershipHistoryQueryValidator.cs

@@ -0,0 +1,34 @@
+namespace CMSMicroservice.Application.ClubMembershipCQ.Queries.GetClubMembershipHistory;
+
+public class GetClubMembershipHistoryQueryValidator : AbstractValidator<GetClubMembershipHistoryQuery>
+{
+    public GetClubMembershipHistoryQueryValidator()
+    {
+        RuleFor(x => x.MembershipId)
+            .GreaterThan(0)
+            .WithMessage("شناسه عضویت معتبر نیست")
+            .When(x => x.MembershipId.HasValue);
+
+        RuleFor(x => x.UserId)
+            .GreaterThan(0)
+            .WithMessage("شناسه کاربر معتبر نیست")
+            .When(x => x.UserId.HasValue);
+
+        RuleFor(x => x)
+            .Must(x => x.MembershipId.HasValue || x.UserId.HasValue)
+            .WithMessage("حداقل یکی از MembershipId یا UserId باید مقداردهی شود");
+    }
+
+    public Func<object, string, Task<IEnumerable<string>>> ValidateValue => async (model, propertyName) =>
+    {
+        var result = await ValidateAsync(
+            ValidationContext<GetClubMembershipHistoryQuery>.CreateWithOptions(
+                (GetClubMembershipHistoryQuery)model, 
+                x => x.IncludeProperties(propertyName)));
+        
+        if (result.IsValid)
+            return Array.Empty<string>();
+        
+        return result.Errors.Select(e => e.ErrorMessage);
+    };
+}

src/CMSMicroservice.Application/ClubMembershipCQ/Queries/GetClubMembershipHistory/GetClubMembershipHistoryResponseDto.cs

@@ -0,0 +1,22 @@
+namespace CMSMicroservice.Application.ClubMembershipCQ.Queries.GetClubMembershipHistory;
+
+public class GetClubMembershipHistoryResponseDto
+{
+    public MetaData MetaData { get; set; }
+    public List<GetClubMembershipHistoryResponseModel> Models { get; set; }
+}
+
+public class GetClubMembershipHistoryResponseModel
+{
+    public long Id { get; set; }
+    public long ClubMembershipId { get; set; }
+    public long UserId { get; set; }
+    public bool OldIsActive { get; set; }
+    public bool NewIsActive { get; set; }
+    public long? OldInitialContribution { get; set; }
+    public long? NewInitialContribution { get; set; }
+    public ClubMembershipAction Action { get; set; }
+    public string? Reason { get; set; }
+    public string? PerformedBy { get; set; }
+    public DateTimeOffset Created { get; set; }
+}