Refactor project files for improved readability and structure

- Cleaned up whitespace in Directory.Build.props and Directory.Packages.props for consistency.
- Reformatted project file references in PnvPanel.Api.csproj for better clarity.
- Enhanced code readability in various endpoint files by adjusting line breaks and indentation.
- Standardized method signatures and improved formatting in ResultExtensions and multiple endpoint classes for better maintainability.

backend/tests/PnvPanel.Application.Tests/Support/ReopenTicketCommandHandlerTests.cs

@@ -25,12 +25,21 @@ public class ReopenTicketCommandHandlerTests
         var currentUser = FakeCurrentUser.Authenticated(userId);
         var handler = new ReopenTicketCommandHandler(dbContext, _telegramNotifier, currentUser);
 
-        var result = await handler.Handle(new ReopenTicketCommand(ticket.Id), CancellationToken.None);
+        var result = await handler.Handle(
+            new ReopenTicketCommand(ticket.Id),
+            CancellationToken.None
+        );
 
         Assert.True(result.IsSuccess);
         Assert.Equal(TicketStatus.Open, ticket.Status);
-        await _telegramNotifier.Received(1).NotifyAdminsTicketReopenedAsync(
-            ticket.Id, Arg.Any<string>(), TicketType.BugReport, Arg.Any<CancellationToken>());
+        await _telegramNotifier
+            .Received(1)
+            .NotifyAdminsTicketReopenedAsync(
+                ticket.Id,
+                Arg.Any<string>(),
+                TicketType.BugReport,
+                Arg.Any<CancellationToken>()
+            );
     }
 
     [Fact]
@@ -45,7 +54,10 @@ public class ReopenTicketCommandHandlerTests
         var currentUser = FakeCurrentUser.Authenticated(userId);
         var handler = new ReopenTicketCommandHandler(dbContext, _telegramNotifier, currentUser);
 
-        var result = await handler.Handle(new ReopenTicketCommand(ticket.Id), CancellationToken.None);
+        var result = await handler.Handle(
+            new ReopenTicketCommand(ticket.Id),
+            CancellationToken.None
+        );
 
         Assert.False(result.IsSuccess);
         Assert.Equal(SupportErrors.NotResolved, result.Error);
@@ -63,7 +75,10 @@ public class ReopenTicketCommandHandlerTests
         var currentUser = FakeCurrentUser.Authenticated(Guid.NewGuid());
         var handler = new ReopenTicketCommandHandler(dbContext, _telegramNotifier, currentUser);
 
-        var result = await handler.Handle(new ReopenTicketCommand(ticket.Id), CancellationToken.None);
+        var result = await handler.Handle(
+            new ReopenTicketCommand(ticket.Id),
+            CancellationToken.None
+        );
 
         Assert.False(result.IsSuccess);
         Assert.Equal(SupportErrors.NotFound, result.Error);