- ProfileManagementDialog.xaml: height 750, new Row 4 with Register/Remove buttons
- BooleanToVisibilityConverter added to Window.Resources
- Fallback instructions panel bound to ShowFallbackInstructions
- RegistrationStatus text block with StringToVisibilityConverter
- Buttons row shifted to Row 5
- ProfileManagementViewModelRegistrationTests: 7 unit tests, all passing
- ProfileManagementViewModelLogoTests: updated to 5-param constructor
- Base64ToImageSourceConverter converts data URI strings to BitmapImage with null-safe error handling
- Registered converter in App.xaml as Base64ToImageConverter global resource
- Added 9 localization keys (EN+FR) for logo UI labels in Settings and Profile dialogs
- Added ClientLogoPreview string property to ProfileManagementViewModel with FormatLogoPreview helper
- Updated OnSelectedProfileChanged, BrowseClientLogoAsync, ClearClientLogoAsync, AutoPullClientLogoAsync
- 17 tests pass (6 converter + 11 profile VM logo tests)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
