feat(11-04): add logo management commands to SettingsViewModel and ProfileManagementViewModel

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

SharepointToolbox.Tests/ViewModels/SettingsViewModelLogoTests.cs

@@ -0,0 +1,72 @@
+using System.IO;
+using CommunityToolkit.Mvvm.Input;
+using Microsoft.Extensions.Logging.Abstractions;
+using Moq;
+using SharepointToolbox.Core.Models;
+using SharepointToolbox.Infrastructure.Persistence;
+using SharepointToolbox.Services;
+using SharepointToolbox.ViewModels;
+using SharepointToolbox.ViewModels.Tabs;
+
+namespace SharepointToolbox.Tests.ViewModels;
+
+[Trait("Category", "Unit")]
+public class SettingsViewModelLogoTests : IDisposable
+{
+    private readonly string _tempFile;
+
+    public SettingsViewModelLogoTests()
+    {
+        _tempFile = Path.GetTempFileName();
+        File.Delete(_tempFile);
+    }
+
+    public void Dispose()
+    {
+        if (File.Exists(_tempFile)) File.Delete(_tempFile);
+        if (File.Exists(_tempFile + ".tmp")) File.Delete(_tempFile + ".tmp");
+    }
+
+    private SettingsViewModel CreateViewModel(IBrandingService? brandingService = null)
+    {
+        var settingsService = new SettingsService(new SettingsRepository(_tempFile));
+        var mockBranding = brandingService ?? new Mock<IBrandingService>().Object;
+        var logger = NullLogger<FeatureViewModelBase>.Instance;
+        return new SettingsViewModel(settingsService, mockBranding, logger);
+    }
+
+    [Fact]
+    public void Constructor_BrowseMspLogoCommand_IsNotNull()
+    {
+        var vm = CreateViewModel();
+        Assert.NotNull(vm.BrowseMspLogoCommand);
+    }
+
+    [Fact]
+    public void Constructor_ClearMspLogoCommand_IsNotNull()
+    {
+        var vm = CreateViewModel();
+        Assert.NotNull(vm.ClearMspLogoCommand);
+    }
+
+    [Fact]
+    public void Constructor_MspLogoPreview_IsNullByDefault()
+    {
+        var vm = CreateViewModel();
+        Assert.Null(vm.MspLogoPreview);
+    }
+
+    [Fact]
+    public async Task ClearMspLogoCommand_CallsClearMspLogoAsync_AndSetsMspLogoPreviewToNull()
+    {
+        var mockBranding = new Mock<IBrandingService>();
+        mockBranding.Setup(b => b.ClearMspLogoAsync()).Returns(Task.CompletedTask);
+
+        var vm = CreateViewModel(mockBranding.Object);
+
+        await vm.ClearMspLogoCommand.ExecuteAsync(null);
+
+        mockBranding.Verify(b => b.ClearMspLogoAsync(), Times.Once);
+        Assert.Null(vm.MspLogoPreview);
+    }
+}