chore: archive v1.1 Enhanced Reports milestone

v1.1 shipped with 4 phases (25 plans), 10/10 requirements complete:
- Global site selection (toolbar picker, all tabs consume)
- User access audit (Graph people-picker, direct/group/inherited)
- Simplified permissions (plain-language labels, risk levels, detail toggle)
- Storage visualization (LiveCharts2 pie/donut + bar charts)

Post-phase polish: centralized site selection (removed per-tab pickers),
claims prefix stripping, StorageMetrics backfill, chart tooltip fix,
summary stats in app + HTML exports.

205 tests passing, 10,484 LOC.

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

SharepointToolbox/ViewModels/Tabs/PermissionsViewModel.cs

@@ -30,9 +30,6 @@ public partial class PermissionsViewModel : FeatureViewModelBase
 
     // ── Observable properties ───────────────────────────────────────────────
 
-    [ObservableProperty]
-    private string _siteUrl = string.Empty;
-
     [ObservableProperty]
     private bool _includeInherited;
 
@@ -115,43 +112,11 @@ public partial class PermissionsViewModel : FeatureViewModelBase
 
     public IAsyncRelayCommand ExportCsvCommand { get; }
     public IAsyncRelayCommand ExportHtmlCommand { get; }
-    public RelayCommand OpenSitePickerCommand { get; }
-
-    // ── Multi-site ──────────────────────────────────────────────────────────
-
-    public ObservableCollection<SiteInfo> SelectedSites { get; } = new();
-
-    /// <summary>
-    /// True when the user has manually selected sites via the site picker on this tab.
-    /// Prevents global site changes from overwriting the user's local selection.
-    /// </summary>
-    private bool _hasLocalSiteOverride;
-
-    // ── Dialog factory (set by View layer — keeps Window out of ViewModel) ──
-
-    /// <summary>
-    /// Factory function set by the View layer to open the SitePickerDialog.
-    /// Returns the opened Window; ViewModel calls ShowDialog() on it.
-    /// </summary>
-    public Func<Window>? OpenSitePickerDialog { get; set; }
 
     // ── Current tenant profile (received via WeakReferenceMessenger) ────────
 
     internal TenantProfile? _currentProfile;
 
-    /// <summary>
-    /// Public accessor for the current tenant profile — used by View layer dialog factory.
-    /// </summary>
-    public TenantProfile? CurrentProfile => _currentProfile;
-
-    /// <summary>
-    /// Label shown in the UI: "3 site(s) selected" or empty when none are selected.
-    /// </summary>
-    public string SitesSelectedLabel =>
-        SelectedSites.Count > 0
-            ? string.Format(Localization.TranslationSource.Instance["perm.sites.selected"], SelectedSites.Count)
-            : string.Empty;
-
     // ── Constructors ────────────────────────────────────────────────────────
 
     /// <summary>
@@ -175,8 +140,6 @@ public partial class PermissionsViewModel : FeatureViewModelBase
 
         ExportCsvCommand = new AsyncRelayCommand(ExportCsvAsync, CanExport);
         ExportHtmlCommand = new AsyncRelayCommand(ExportHtmlAsync, CanExport);
-        OpenSitePickerCommand = new RelayCommand(ExecuteOpenSitePicker);
-        SelectedSites.CollectionChanged += (_, _) => OnPropertyChanged(nameof(SitesSelectedLabel));
     }
 
     /// <summary>
@@ -198,21 +161,10 @@ public partial class PermissionsViewModel : FeatureViewModelBase
 
         ExportCsvCommand = new AsyncRelayCommand(ExportCsvAsync, CanExport);
         ExportHtmlCommand = new AsyncRelayCommand(ExportHtmlAsync, CanExport);
-        OpenSitePickerCommand = new RelayCommand(ExecuteOpenSitePicker);
-        SelectedSites.CollectionChanged += (_, _) => OnPropertyChanged(nameof(SitesSelectedLabel));
     }
 
     // ── FeatureViewModelBase implementation ─────────────────────────────────
 
-    protected override void OnGlobalSitesChanged(IReadOnlyList<SiteInfo> sites)
-    {
-        if (_hasLocalSiteOverride) return;
-
-        SelectedSites.Clear();
-        foreach (var site in sites)
-            SelectedSites.Add(site);
-    }
-
     partial void OnIsSimplifiedModeChanged(bool value)
     {
         if (value && Results.Count > 0)
@@ -237,17 +189,15 @@ public partial class PermissionsViewModel : FeatureViewModelBase
 
     protected override async Task RunOperationAsync(CancellationToken ct, IProgress<OperationProgress> progress)
     {
-        var urls = SelectedSites.Count > 0
-            ? SelectedSites.Select(s => s.Url).ToList()
-            : new List<string> { SiteUrl };
-
-        var nonEmpty = urls.Where(u => !string.IsNullOrWhiteSpace(u)).ToList();
-        if (nonEmpty.Count == 0)
+        var urls = GlobalSites.Select(s => s.Url).Where(u => !string.IsNullOrWhiteSpace(u)).ToList();
+        if (urls.Count == 0)
         {
-            StatusMessage = "Enter a site URL or select sites.";
+            StatusMessage = "Select at least one site from the toolbar.";
             return;
         }
 
+        var nonEmpty = urls;
+
         var allEntries = new List<PermissionEntry>();
         var scanOptions = new ScanOptions(
             IncludeInherited: IncludeInherited,
@@ -303,15 +253,10 @@ public partial class PermissionsViewModel : FeatureViewModelBase
     protected override void OnTenantSwitched(TenantProfile profile)
     {
         _currentProfile = profile;
-        _hasLocalSiteOverride = false;
         Results = new ObservableCollection<PermissionEntry>();
         SimplifiedResults = Array.Empty<SimplifiedPermissionEntry>();
         Summaries = Array.Empty<PermissionSummary>();
         OnPropertyChanged(nameof(ActiveItemsSource));
-        SiteUrl = string.Empty;
-        SelectedSites.Clear();
-        OnPropertyChanged(nameof(SitesSelectedLabel));
-        OnPropertyChanged(nameof(CurrentProfile));
         ExportCsvCommand.NotifyCanExecuteChanged();
         ExportHtmlCommand.NotifyCanExecuteChanged();
     }
@@ -381,19 +326,6 @@ public partial class PermissionsViewModel : FeatureViewModelBase
         }
     }
 
-    private void ExecuteOpenSitePicker()
-    {
-        if (OpenSitePickerDialog == null) return;
-        var dialog = OpenSitePickerDialog.Invoke();
-        if (dialog?.ShowDialog() == true && dialog is Views.Dialogs.SitePickerDialog picker)
-        {
-            _hasLocalSiteOverride = true;
-            SelectedSites.Clear();
-            foreach (var site in picker.SelectedUrls)
-                SelectedSites.Add(site);
-        }
-    }
-
     private static void OpenFile(string filePath)
     {
         try