- SearchViewModel: full filter props, RunOperationAsync via ISearchService
- Uses TenantProfile site URL override pattern (ctx.Url is read-only)
- ExportCsvCommand + ExportHtmlCommand with CanExport guard
- SearchView.xaml: filter panel + DataGrid with all 8 columns
- SearchView.xaml.cs: DI constructor with DataContext wiring
- Create Views/Tabs/SettingsView.xaml (UserControl with language ComboBox en/fr, DataFolder TextBox and Browse button using TranslationSource)
- Create Views/Tabs/SettingsView.xaml.cs (DI constructor injection of SettingsViewModel, LoadAsync on Loaded)
- Update MainWindow.xaml to add xmlns:views namespace and clear placeholder TextBlock from SettingsTabItem
- Register SettingsView as Transient in DI; resolve and set as SettingsTabItem.Content from MainWindow constructor
- All 42 unit tests pass, 0 build errors