feat: add person name and insert time to announcement DTO

- Added PersonName property to AnnouncementDto to display person's full name
- Added lookup logic to fetch person names from Persons table based on phone numbers
- Added InsertTime shadow property retrieval from EF Core to display creation date
- Updated model snapshot with new shadow properties (InsertTime, IsRemoved, RemoveTime, UpdateTime) for Chat entity

Complex.Application/Services/AnnouncementService.cs

@@ -33,14 +33,37 @@ namespace Complex.Application.Services.Announcement
                 .Take(pageSize)
                 .ToList();
 
-            var result = chats.Select(c => new AnnouncementDto
+            // Get unique phone numbers to look up person names
+            var phoneNumbers = chats
+                .Select(c => c.PersonMobileNumber)
+                .Where(p => p != null)
+                .Distinct()
+                .ToList();
+
+            var personNames = _complexDBContext.Persons
+                .Where(p => phoneNumbers.Contains(p.Id))
+                .ToDictionary(p => p.Id, p => $"{p.FirstName} {p.LastName}".Trim());
+
+            var result = chats.Select(c =>
             {
-                Id = c.Id,
-                ComplexId = c.ComplexId,
-                PersonMobileNumber = c.PersonMobileNumber,
-                Body = c.Body,
-                ChatTypeId = c.ChatTypeId,
-                InsertTime = null // InsertTime is set by Auditable attribute in SaveChanges, not a property on Chat entity
+                personNames.TryGetValue(c.PersonMobileNumber, out var personName);
+
+                // Read InsertTime from EF Core shadow property
+                var insertTimeEntry = _complexDBContext.Entry(c).Property("InsertTime");
+                var insertTime = insertTimeEntry?.CurrentValue as DateTime?;
+
+                return new AnnouncementDto
+                {
+                    Id = c.Id,
+                    ComplexId = c.ComplexId,
+                    PersonMobileNumber = c.PersonMobileNumber,
+                    PersonName = personName,
+                    Body = c.Body,
+                    ChatTypeId = c.ChatTypeId,
+                    InsertTime = insertTime.HasValue
+                        ? insertTime.Value.ToString("yyyy/MM/dd HH:mm")
+                        : null
+                };
             }).ToList();
 
             return new ResultDto<List<AnnouncementDto>>
@@ -78,6 +101,7 @@ namespace Complex.Application.Services.Announcement
         public long Id { get; set; }
         public Guid ComplexId { get; set; }
         public string? PersonMobileNumber { get; set; }
+        public string? PersonName { get; set; }
         public string? Body { get; set; }
         public byte? ChatTypeId { get; set; }
         public string? InsertTime { get; set; }