feat: Implement Public Message Management Commands and Queries

- Add GetUserPackageStatusQueryValidator for user package status validation.
- Create ArchiveMessageCommand and ArchiveMessageCommandHandler for archiving public messages.
- Implement ArchiveMessageCommandValidator to validate message ID.
- Introduce PublishMessageCommand and PublishMessageCommandHandler for publishing messages.
- Add PublishMessageCommandValidator for validating publish message requests.
- Implement GetPublicMessageQuery and GetPublicMessageQueryHandler for retrieving public messages.
- Create GetPublicMessageQueryValidator for validating public message requests.
- Add ApplyDiscountToOrderCommand and ApplyDiscountToOrderCommandHandler for applying discounts to orders.
- Implement ApplyDiscountToOrderCommandValidator for validating discount application requests.
- Create UpdateOrderStatusCommand and UpdateOrderStatusCommandHandler for changing order statuses.
- Implement UpdateOrderStatusCommandValidator for validating order status updates.
- Add CalculateOrderPVQuery and CalculateOrderPVQueryHandler for calculating order PV.
- Implement CalculateOrderPVQueryValidator for validating PV calculation requests.
- Create GetOrdersByDateRangeQuery and GetOrdersByDateRangeQueryHandler for retrieving orders by date range.
- Implement GetOrdersByDateRangeQueryValidator for validating date range queries.
- Add PublicMessage entity to represent public messages in the system.
- Implement PublicMessageService for handling public message operations via gRPC.

src/CMSMicroservice.Domain/Entities/PublicMessage.cs

@@ -1,11 +1,10 @@
 using CMSMicroservice.Domain.Common;
 using CMSMicroservice.Domain.Enums;
 
-namespace CMSMicroservice.Domain.Entities.Message;
+namespace CMSMicroservice.Domain.Entities;
 
 /// <summary>
-/// پیام‌های عمومی سیستم
-/// Admin می‌تواند پیام‌های عمومی برای نمایش در داشبورد کاربران ارسال کند
+/// پیام عمومی برای نمایش در سیستم
 /// </summary>
 public class PublicMessage : BaseAuditableEntity
 {
@@ -22,37 +21,52 @@ public class PublicMessage : BaseAuditableEntity
     /// <summary>
     /// نوع پیام (Announcement, News, Warning, Promotion, SystemUpdate, Event)
     /// </summary>
-    public MessageType Type { get; set; }
+    public MessageType Type { get; set; } = MessageType.Announcement;
 
     /// <summary>
     /// اولویت پیام (Low, Medium, High, Urgent)
     /// </summary>
-    public MessagePriority Priority { get; set; }
+    public MessagePriority Priority { get; set; } = MessagePriority.Medium;
 
     /// <summary>
     /// وضعیت فعال/غیرفعال
     /// </summary>
-    public bool IsActive { get; set; }
+    public bool IsActive { get; set; } = false;
+
+    /// <summary>
+    /// آیا آرشیو شده است؟
+    /// </summary>
+    public bool IsArchived { get; set; } = false;
 
     /// <summary>
     /// تاریخ شروع نمایش پیام
     /// </summary>
-    public DateTime StartsAt { get; set; }
+    public DateTime? StartDate { get; set; }
 
     /// <summary>
     /// تاریخ پایان نمایش پیام
     /// </summary>
-    public DateTime ExpiresAt { get; set; }
+    public DateTime? EndDate { get; set; }
+
+    /// <summary>
+    /// تاریخ انتشار
+    /// </summary>
+    public DateTime? PublishedAt { get; set; }
+
+    /// <summary>
+    /// تاریخ آرشیو
+    /// </summary>
+    public DateTime? ArchivedAt { get; set; }
 
     /// <summary>
     /// شناسه Admin ایجادکننده
     /// </summary>
-    public long CreatedByUserId { get; set; }
+    public long? CreatedByUserId { get; set; }
 
     /// <summary>
     /// تعداد بازدید (اختیاری - برای آمار)
     /// </summary>
-    public int ViewCount { get; set; }
+    public int ViewCount { get; set; } = 0;
 
     /// <summary>
     /// لینک اختیاری (برای اطلاعات بیشتر)
@@ -63,4 +77,17 @@ public class PublicMessage : BaseAuditableEntity
     /// متن دکمه لینک (مثلاً "اطلاعات بیشتر")
     /// </summary>
     public string? LinkText { get; set; }
+
+    // Backward compatibility properties (map to StartDate/EndDate)
+    public DateTime? StartsAt
+    {
+        get => StartDate;
+        set => StartDate = value;
+    }
+
+    public DateTime? ExpiresAt
+    {
+        get => EndDate;
+        set => EndDate = value;
+    }
 }