People picker ListBox used MouseBinding which fires before SelectedItem
updates, causing null CommandParameter. Replaced with SelectionChanged
event handler in code-behind.
AuditUsersAsync created TenantProfile with empty ClientId, causing
ArgumentException in SessionManager. Added currentProfile parameter
to pass the authenticated tenant's ClientId through.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- IUserAccessAuditService.AuditUsersAsync: scan sites and filter by user logins
- IGraphUserSearchService.SearchUsersAsync: Graph API people-picker autocomplete
- GraphUserResult record: DisplayName, UserPrincipalName, Mail
