chore: release v2.4

- Add theme system (Dark/Light palettes, ModernTheme, ThemeManager)
- Add InputDialog, Spinner common view
- Add DuplicatesCsvExportService
- Refresh views, dialogs, and view models across tabs
- Update localization strings (en/fr)
- Tweak services (transfer, permissions, search, user access, ownership elevation, bulk operations)

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

SharepointToolbox/ViewModels/Tabs/StorageViewModel.cs

@@ -22,6 +22,9 @@ public partial class StorageViewModel : FeatureViewModelBase
     private readonly StorageCsvExportService _csvExportService;
     private readonly StorageHtmlExportService _htmlExportService;
     private readonly IBrandingService? _brandingService;
+    private readonly IOwnershipElevationService? _ownershipService;
+    private readonly SettingsService? _settingsService;
+    private readonly ThemeManager? _themeManager;
     private readonly ILogger<FeatureViewModelBase> _logger;
     private TenantProfile? _currentProfile;
 
@@ -136,7 +139,10 @@ public partial class StorageViewModel : FeatureViewModelBase
         StorageCsvExportService csvExportService,
         StorageHtmlExportService htmlExportService,
         IBrandingService brandingService,
-        ILogger<FeatureViewModelBase> logger)
+        ILogger<FeatureViewModelBase> logger,
+        IOwnershipElevationService? ownershipService = null,
+        SettingsService? settingsService = null,
+        ThemeManager? themeManager = null)
         : base(logger)
     {
         _storageService    = storageService;
@@ -144,10 +150,16 @@ public partial class StorageViewModel : FeatureViewModelBase
         _csvExportService  = csvExportService;
         _htmlExportService = htmlExportService;
         _brandingService   = brandingService;
+        _ownershipService  = ownershipService;
+        _settingsService   = settingsService;
+        _themeManager      = themeManager;
         _logger            = logger;
 
         ExportCsvCommand  = new AsyncRelayCommand(ExportCsvAsync,  CanExport);
         ExportHtmlCommand = new AsyncRelayCommand(ExportHtmlAsync, CanExport);
+
+        if (_themeManager is not null)
+            _themeManager.ThemeChanged += (_, _) => UpdateChartSeries();
     }
 
     /// <summary>Test constructor — omits export services.</summary>
@@ -194,6 +206,8 @@ public partial class StorageViewModel : FeatureViewModelBase
         var allNodes = new List<StorageNode>();
         var allTypeMetrics = new List<FileTypeMetric>();
 
+        var autoOwnership = await IsAutoTakeOwnershipEnabled();
+
         int i = 0;
         foreach (var url in nonEmpty)
         {
@@ -207,9 +221,30 @@ public partial class StorageViewModel : FeatureViewModelBase
                 ClientId = _currentProfile.ClientId,
                 Name = _currentProfile.Name
             };
+
             var ctx = await _sessionManager.GetOrCreateContextAsync(siteProfile, ct);
 
-            var nodes = await _storageService.CollectStorageAsync(ctx, options, progress, ct);
+            IReadOnlyList<StorageNode> nodes;
+            try
+            {
+                nodes = await _storageService.CollectStorageAsync(ctx, options, progress, ct);
+            }
+            catch (Microsoft.SharePoint.Client.ServerUnauthorizedAccessException) when (_ownershipService != null && autoOwnership)
+            {
+                _logger.LogWarning("Access denied on {Url}, auto-elevating ownership...", url);
+                var adminUrl = DeriveAdminUrl(_currentProfile.TenantUrl ?? url);
+                var adminProfile = new TenantProfile
+                {
+                    TenantUrl = adminUrl,
+                    ClientId = _currentProfile.ClientId,
+                    Name = _currentProfile.Name
+                };
+                var adminCtx = await _sessionManager.GetOrCreateContextAsync(adminProfile, ct);
+                await _ownershipService.ElevateAsync(adminCtx, url, string.Empty, ct);
+
+                ctx = await _sessionManager.GetOrCreateContextAsync(siteProfile, ct);
+                nodes = await _storageService.CollectStorageAsync(ctx, options, progress, ct);
+            }
 
             // Backfill any libraries where StorageMetrics returned zeros
             await _storageService.BackfillZeroNodesAsync(ctx, nodes, progress, ct);
@@ -258,6 +293,24 @@ public partial class StorageViewModel : FeatureViewModelBase
         ExportHtmlCommand.NotifyCanExecuteChanged();
     }
 
+    private async Task<bool> IsAutoTakeOwnershipEnabled()
+    {
+        if (_settingsService == null) return false;
+        var settings = await _settingsService.GetSettingsAsync();
+        return settings.AutoTakeOwnership;
+    }
+
+    internal static string DeriveAdminUrl(string tenantUrl)
+    {
+        var uri = new Uri(tenantUrl.TrimEnd('/'));
+        var host = uri.Host;
+        if (host.Contains("-admin.sharepoint.com", StringComparison.OrdinalIgnoreCase))
+            return tenantUrl;
+        var adminHost = host.Replace(".sharepoint.com", "-admin.sharepoint.com",
+            StringComparison.OrdinalIgnoreCase);
+        return $"{uri.Scheme}://{adminHost}";
+    }
+
     internal void SetCurrentProfile(TenantProfile profile) => _currentProfile = profile;
 
     internal Task TestRunOperationAsync(CancellationToken ct, IProgress<OperationProgress> progress)
@@ -324,6 +377,9 @@ public partial class StorageViewModel : FeatureViewModelBase
         UpdateChartSeries();
     }
 
+    private SKColor ChartFgColor => (_themeManager?.IsDarkActive ?? false) ? new SKColor(0xE7, 0xEA, 0xF1) : new SKColor(0x1F, 0x24, 0x30);
+    private SKColor ChartSeparatorColor => (_themeManager?.IsDarkActive ?? false) ? new SKColor(0x32, 0x38, 0x49) : new SKColor(0xE3, 0xE6, 0xEC);
+
     private void UpdateChartSeries()
     {
         var metrics = FileTypeMetrics.ToList();
@@ -361,6 +417,7 @@ public partial class StorageViewModel : FeatureViewModelBase
                 HoverPushout = 8,
                 MaxRadialColumnWidth = 60,
                 DataLabelsFormatter = _ => m.DisplayLabel,
+                DataLabelsPaint = new SolidColorPaint(ChartFgColor),
                 ToolTipLabelFormatter = _ =>
                     $"{m.DisplayLabel}: {FormatBytes(m.TotalSizeBytes)} ({m.FileCount} files)",
                 IsVisibleAtLegend = true,
@@ -379,7 +436,8 @@ public partial class StorageViewModel : FeatureViewModelBase
                 {
                     int idx = (int)point.Index;
                     return idx < chartItems.Count ? FormatBytes(chartItems[idx].TotalSizeBytes) : "";
-                }
+                },
+                DataLabelsPaint = new SolidColorPaint(ChartFgColor)
             }
         };
 
@@ -388,7 +446,10 @@ public partial class StorageViewModel : FeatureViewModelBase
             new Axis
             {
                 Labels = chartItems.Select(m => m.DisplayLabel).ToArray(),
-                LabelsRotation = -45
+                LabelsRotation = -45,
+                LabelsPaint = new SolidColorPaint(ChartFgColor),
+                TicksPaint  = new SolidColorPaint(ChartFgColor),
+                SeparatorsPaint = new SolidColorPaint(ChartSeparatorColor)
             }
         };
 
@@ -396,7 +457,10 @@ public partial class StorageViewModel : FeatureViewModelBase
         {
             new Axis
             {
-                Labeler = value => FormatBytes((long)value)
+                Labeler = value => FormatBytes((long)value),
+                LabelsPaint = new SolidColorPaint(ChartFgColor),
+                TicksPaint  = new SolidColorPaint(ChartFgColor),
+                SeparatorsPaint = new SolidColorPaint(ChartSeparatorColor)
             }
         };
     }