fix(services): stamp user, contact, calendar and location audit times in UTC

User creation, contact, calendar event and site-contact create/modify/delete stamps used local server time. Validation rules comparing user-entered dates and the JWT expiry are unchanged.

Api.SeaHavenIndustries.Tests/CalendarServiceTests.cs

@@ -44,7 +44,7 @@ public class CalendarServiceTests
             StartDate = startDate,
             EndDate = startDate,
             IsDeleted = isDeleted,
-            CreatedDate = DateTime.Now
+            CreatedDate = DateTime.UtcNow
         };
         ctx.Events.Add(ev);
         ctx.SaveChanges();
@@ -64,6 +64,7 @@ public class CalendarServiceTests
         saved.Title.Should().Be("Standup");
         saved.IsDeleted.Should().Be(false);
         saved.CreatedDate.Should().NotBeNull();
+        saved.CreatedDate!.Value.Kind.Should().Be(DateTimeKind.Utc);
     }
 
     [Fact]
@@ -97,6 +98,7 @@ public class CalendarServiceTests
         var updated = ctx.Events.Single();
         updated.Title.Should().Be("New");
         updated.LastModificationTime.Should().NotBeNull();
+        updated.LastModificationTime!.Value.Kind.Should().Be(DateTimeKind.Utc);
     }
 
     [Fact]
@@ -134,6 +136,7 @@ public class CalendarServiceTests
         var row = ctx.Events.Single();
         row.IsDeleted.Should().Be(true);
         row.DeletionTime.Should().NotBeNull();
+        row.DeletionTime!.Value.Kind.Should().Be(DateTimeKind.Utc);
     }
 
     [Fact]

SeaHaven.Services/Implementation/CalendarService.cs

@@ -31,7 +31,7 @@ namespace SeaHaven.Services.Implementation
                 EndDate = input.EndDate,
                 EndTime = input.EndTime,
                 AllDay = input.AllDay,
-                CreatedDate = DateTime.Now,
+                CreatedDate = DateTime.UtcNow,
                 IsDeleted = false
             };
 
@@ -57,7 +57,7 @@ namespace SeaHaven.Services.Implementation
             model.EndDate = input.EndDate;
             model.EndTime = input.EndTime;
             model.AllDay = input.AllDay;
-            model.LastModificationTime = DateTime.Now;
+            model.LastModificationTime = DateTime.UtcNow;
 
             await _dataService.UpdateEventAsync(model, cancellationToken);
             return true;
@@ -76,7 +76,7 @@ namespace SeaHaven.Services.Implementation
                 return false;
 
             model.IsDeleted = true;
-            model.DeletionTime = DateTime.Now;
+            model.DeletionTime = DateTime.UtcNow;
 
             await _dataService.UpdateEventAsync(model, cancellationToken);
             return true;

SeaHaven.Services/Implementation/ContactService.cs

@@ -104,7 +104,7 @@ namespace SeaHaven.Services.Implementation
                 ContactType = dto.Type,
                 AccountId = dto.AccountId,
                 createdby = userId,
-                CreatedDate = DateTime.Now
+                CreatedDate = DateTime.UtcNow
             };
 
             var savedContact = await _contactDataService.AddAsync(contact);
@@ -151,7 +151,7 @@ namespace SeaHaven.Services.Implementation
             if (dto.AccountId.HasValue)
                 existingContact.AccountId = dto.AccountId;
 
-            existingContact.LastModificationTime = DateTime.Now;
+            existingContact.LastModificationTime = DateTime.UtcNow;
 
             await _contactDataService.UpdateAsync(existingContact);
 

SeaHaven.Services/Implementation/LocationService.cs

@@ -399,7 +399,7 @@ namespace SeaHaven.Services.Implementation
         {
             ThrowOnInvalidContacts(contacts);
 
-            var now = DateTime.Now;
+            var now = DateTime.UtcNow;
             var siteContacts = contacts
                 .Select((row, index) => new Contacts
                 {
@@ -457,7 +457,7 @@ namespace SeaHaven.Services.Implementation
                     existing.PhoneNumber = phone;
                     existing.SiteContactOrder = i;
                     existing.AccountId = location.AccountId;
-                    existing.LastModificationTime = DateTime.Now;
+                    existing.LastModificationTime = DateTime.UtcNow;
                 }
                 else
                 {
@@ -470,7 +470,7 @@ namespace SeaHaven.Services.Implementation
                         PhoneNumber = phone,
                         SiteContactOrder = i,
                         AccountId = location.AccountId,
-                        CreatedDate = DateTime.Now,
+                        CreatedDate = DateTime.UtcNow,
                         createdby = actorId
                     });
                 }
@@ -478,7 +478,7 @@ namespace SeaHaven.Services.Implementation
 
             // Rows omitted from the request are soft deleted so historical
             // WorkOrderContacts keep rendering.
-            var now = DateTime.Now;
+            var now = DateTime.UtcNow;
             foreach (var existing in existingById.Values)
             {
                 if (keptIds.Contains(existing.Id) || existing.IsDeleted == true)

SeaHaven.Services/Implementation/UserService.cs

@@ -72,7 +72,7 @@ namespace SeaHaven.Services.Implementation
             {
                 model.EmailConfirmed = true;
                 model.UserName = model.Email;
-                model.CreatedDate = DateTime.Now;
+                model.CreatedDate = DateTime.UtcNow;
                 model.UniqueName = "Active";
                 model.PhoneNumber = dto.Role;
 
@@ -152,7 +152,7 @@ namespace SeaHaven.Services.Implementation
             exist.Email = dto.Email;
             exist.NormalizedEmail = dto.Email.ToUpperInvariant();
             exist.NormalizedUserName = dto.Email.ToUpperInvariant();
-            exist.CreatedDate = DateTime.Now;
+            exist.CreatedDate = DateTime.UtcNow;
             exist.UniqueName = "Active";
             exist.PhoneNumber = dto.Role;
             exist.AccountId = dto.AccountId;