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/Telegram/UnlinkTelegramCommandHandlerTests.cs

@@ -16,26 +16,38 @@ public class UnlinkTelegramCommandHandlerTests
     public async Task Handle_WhenAuthenticated_DelegatesToIdentityService()
     {
         var userId = Guid.NewGuid();
-        _identityService.UnlinkTelegramAsync(userId, Arg.Any<CancellationToken>()).Returns(Result.Success());
+        _identityService
+            .UnlinkTelegramAsync(userId, Arg.Any<CancellationToken>())
+            .Returns(Result.Success());
 
-        var handler = new UnlinkTelegramCommandHandler(_identityService, FakeCurrentUser.Authenticated(userId));
+        var handler = new UnlinkTelegramCommandHandler(
+            _identityService,
+            FakeCurrentUser.Authenticated(userId)
+        );
 
         var result = await handler.Handle(new UnlinkTelegramCommand(), CancellationToken.None);
 
         Assert.True(result.IsSuccess);
-        await _identityService.Received(1).UnlinkTelegramAsync(userId, Arg.Any<CancellationToken>());
+        await _identityService
+            .Received(1)
+            .UnlinkTelegramAsync(userId, Arg.Any<CancellationToken>());
     }
 
     [Fact]
     public async Task Handle_WhenNotAuthenticated_ReturnsUnauthorized()
     {
-        var handler = new UnlinkTelegramCommandHandler(_identityService, FakeCurrentUser.Anonymous());
+        var handler = new UnlinkTelegramCommandHandler(
+            _identityService,
+            FakeCurrentUser.Anonymous()
+        );
 
         var result = await handler.Handle(new UnlinkTelegramCommand(), CancellationToken.None);
 
         Assert.False(result.IsSuccess);
         Assert.Equal(AuthErrors.Unauthorized, result.Error);
-        await _identityService.DidNotReceive().UnlinkTelegramAsync(Arg.Any<Guid>(), Arg.Any<CancellationToken>());
+        await _identityService
+            .DidNotReceive()
+            .UnlinkTelegramAsync(Arg.Any<Guid>(), Arg.Any<CancellationToken>());
     }
 
     [Fact]
@@ -43,9 +55,14 @@ public class UnlinkTelegramCommandHandlerTests
     {
         var userId = Guid.NewGuid();
         var error = TelegramErrors.NotLinked;
-        _identityService.UnlinkTelegramAsync(userId, Arg.Any<CancellationToken>()).Returns(Result.Failure(error));
+        _identityService
+            .UnlinkTelegramAsync(userId, Arg.Any<CancellationToken>())
+            .Returns(Result.Failure(error));
 
-        var handler = new UnlinkTelegramCommandHandler(_identityService, FakeCurrentUser.Authenticated(userId));
+        var handler = new UnlinkTelegramCommandHandler(
+            _identityService,
+            FakeCurrentUser.Authenticated(userId)
+        );
 
         var result = await handler.Handle(new UnlinkTelegramCommand(), CancellationToken.None);