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/Configs/Rotate/RotateVpnConfigCommandHandlerTests.cs

@@ -18,16 +18,33 @@ public class RotateVpnConfigCommandHandlerTests
     private readonly IIdentityService _identityService = Substitute.For<IIdentityService>();
 
     private static CurrentUserProfile MakeProfile(Guid userId) =>
-        new(userId, "alice", Guid.NewGuid(), "user", true, false, 3, RoleQuota.Unlimited, "sub-token");
+        new(
+            userId,
+            "alice",
+            Guid.NewGuid(),
+            "user",
+            true,
+            false,
+            3,
+            RoleQuota.Unlimited,
+            "sub-token"
+        );
 
     [Fact]
     public async Task Handle_WhenActiveConfigOwnedByUser_RotatesAndAddsNewClient()
     {
         using var dbContext = InMemoryDbContextFactory.Create();
         var userId = Guid.NewGuid();
-        _identityService.GetProfileAsync(userId, Arg.Any<CancellationToken>()).Returns(MakeProfile(userId));
+        _identityService
+            .GetProfileAsync(userId, Arg.Any<CancellationToken>())
+            .Returns(MakeProfile(userId));
 
-        var node = Node.Register("node-1", new Uri("https://node1.example.com"), new NodeCredentials("admin", "protected"), null);
+        var node = Node.Register(
+            "node-1",
+            new Uri("https://node1.example.com"),
+            new NodeCredentials("admin", "protected"),
+            null
+        );
         var inbound = Inbound.FromRemote(node.Id, "1", VpnProtocol.Vless, "remark", 443);
         var config = VpnConfig.Create(userId, inbound.Id, VpnProtocol.Vless, "my-config");
         config.AssignRemoteClient("old-external-id");
@@ -37,19 +54,41 @@ public class RotateVpnConfigCommandHandlerTests
         dbContext.VpnConfigs.Add(config);
         await dbContext.SaveChangesAsync(CancellationToken.None);
 
-        _gateway.AddClientAsync(
-                Arg.Any<Node>(), inbound.RemoteInboundId, config.Protocol, Arg.Any<string>(),
-                Arg.Any<string>(), Arg.Any<int>(), Arg.Any<CancellationToken>())
+        _gateway
+            .AddClientAsync(
+                Arg.Any<Node>(),
+                inbound.RemoteInboundId,
+                config.Protocol,
+                Arg.Any<string>(),
+                Arg.Any<string>(),
+                Arg.Any<int>(),
+                Arg.Any<CancellationToken>()
+            )
             .Returns(Result.Success("new-external-id"));
 
-        var handler = new RotateVpnConfigCommandHandler(dbContext, _gateway, _identityService, FakeCurrentUser.Authenticated(userId));
+        var handler = new RotateVpnConfigCommandHandler(
+            dbContext,
+            _gateway,
+            _identityService,
+            FakeCurrentUser.Authenticated(userId)
+        );
 
-        var result = await handler.Handle(new RotateVpnConfigCommand(config.Id), CancellationToken.None);
+        var result = await handler.Handle(
+            new RotateVpnConfigCommand(config.Id),
+            CancellationToken.None
+        );
 
         Assert.True(result.IsSuccess);
         Assert.Equal("new-external-id", config.ClientExternalId);
-        await _gateway.Received(1).RemoveClientAsync(
-            Arg.Any<Node>(), inbound.RemoteInboundId, "old-external-id", config.Protocol, Arg.Any<CancellationToken>());
+        await _gateway
+            .Received(1)
+            .RemoveClientAsync(
+                Arg.Any<Node>(),
+                inbound.RemoteInboundId,
+                "old-external-id",
+                config.Protocol,
+                Arg.Any<CancellationToken>()
+            );
     }
 
     [Fact]
@@ -58,9 +97,17 @@ public class RotateVpnConfigCommandHandlerTests
         using var dbContext = InMemoryDbContextFactory.Create();
         var userId = Guid.NewGuid();
 
-        var handler = new RotateVpnConfigCommandHandler(dbContext, _gateway, _identityService, FakeCurrentUser.Authenticated(userId));
+        var handler = new RotateVpnConfigCommandHandler(
+            dbContext,
+            _gateway,
+            _identityService,
+            FakeCurrentUser.Authenticated(userId)
+        );
 
-        var result = await handler.Handle(new RotateVpnConfigCommand(Guid.NewGuid()), CancellationToken.None);
+        var result = await handler.Handle(
+            new RotateVpnConfigCommand(Guid.NewGuid()),
+            CancellationToken.None
+        );
 
         Assert.False(result.IsSuccess);
         Assert.Equal(ConfigErrors.NotFound, result.Error);
@@ -80,9 +127,17 @@ public class RotateVpnConfigCommandHandlerTests
         dbContext.VpnConfigs.Add(config);
         await dbContext.SaveChangesAsync(CancellationToken.None);
 
-        var handler = new RotateVpnConfigCommandHandler(dbContext, _gateway, _identityService, FakeCurrentUser.Authenticated(otherUserId));
+        var handler = new RotateVpnConfigCommandHandler(
+            dbContext,
+            _gateway,
+            _identityService,
+            FakeCurrentUser.Authenticated(otherUserId)
+        );
 
-        var result = await handler.Handle(new RotateVpnConfigCommand(config.Id), CancellationToken.None);
+        var result = await handler.Handle(
+            new RotateVpnConfigCommand(config.Id),
+            CancellationToken.None
+        );
 
         Assert.False(result.IsSuccess);
         Assert.Equal(ConfigErrors.NotFound, result.Error);
@@ -102,9 +157,17 @@ public class RotateVpnConfigCommandHandlerTests
         dbContext.VpnConfigs.Add(config);
         await dbContext.SaveChangesAsync(CancellationToken.None);
 
-        var handler = new RotateVpnConfigCommandHandler(dbContext, _gateway, _identityService, FakeCurrentUser.Authenticated(userId));
+        var handler = new RotateVpnConfigCommandHandler(
+            dbContext,
+            _gateway,
+            _identityService,
+            FakeCurrentUser.Authenticated(userId)
+        );
 
-        var result = await handler.Handle(new RotateVpnConfigCommand(config.Id), CancellationToken.None);
+        var result = await handler.Handle(
+            new RotateVpnConfigCommand(config.Id),
+            CancellationToken.None
+        );
 
         Assert.False(result.IsSuccess);
         Assert.Equal(ConfigErrors.NotFound, result.Error);
@@ -115,9 +178,16 @@ public class RotateVpnConfigCommandHandlerTests
     {
         using var dbContext = InMemoryDbContextFactory.Create();
         var userId = Guid.NewGuid();
-        _identityService.GetProfileAsync(userId, Arg.Any<CancellationToken>()).Returns(MakeProfile(userId));
+        _identityService
+            .GetProfileAsync(userId, Arg.Any<CancellationToken>())
+            .Returns(MakeProfile(userId));
 
-        var node = Node.Register("node-1", new Uri("https://node1.example.com"), new NodeCredentials("admin", "protected"), null);
+        var node = Node.Register(
+            "node-1",
+            new Uri("https://node1.example.com"),
+            new NodeCredentials("admin", "protected"),
+            null
+        );
         var inbound = Inbound.FromRemote(node.Id, "1", VpnProtocol.Vless, "remark", 443);
         var config = VpnConfig.Create(userId, inbound.Id, VpnProtocol.Vless, null);
         config.AssignRemoteClient("old-external-id");
@@ -128,14 +198,29 @@ public class RotateVpnConfigCommandHandlerTests
         await dbContext.SaveChangesAsync(CancellationToken.None);
 
         var gatewayError = Error.Failure("Xui.Unreachable", "Панель недоступна.");
-        _gateway.AddClientAsync(
-                Arg.Any<Node>(), inbound.RemoteInboundId, config.Protocol, Arg.Any<string>(),
-                Arg.Any<string>(), Arg.Any<int>(), Arg.Any<CancellationToken>())
+        _gateway
+            .AddClientAsync(
+                Arg.Any<Node>(),
+                inbound.RemoteInboundId,
+                config.Protocol,
+                Arg.Any<string>(),
+                Arg.Any<string>(),
+                Arg.Any<int>(),
+                Arg.Any<CancellationToken>()
+            )
             .Returns(Result.Failure<string>(gatewayError));
 
-        var handler = new RotateVpnConfigCommandHandler(dbContext, _gateway, _identityService, FakeCurrentUser.Authenticated(userId));
+        var handler = new RotateVpnConfigCommandHandler(
+            dbContext,
+            _gateway,
+            _identityService,
+            FakeCurrentUser.Authenticated(userId)
+        );
 
-        var result = await handler.Handle(new RotateVpnConfigCommand(config.Id), CancellationToken.None);
+        var result = await handler.Handle(
+            new RotateVpnConfigCommand(config.Id),
+            CancellationToken.None
+        );
 
         Assert.False(result.IsSuccess);
         Assert.Equal(gatewayError, result.Error);