Add soft delete for users with deleted users tab and E2E tests

[tjementum]

Summary & Motivation

Add soft delete functionality for users, allowing Tenant Owners and Admins to delete users with the ability to restore them or permanently purge them. Previously, user deletion was immediate and irreversible. This feature provides a safety net for accidental deletions and compliance with data retention requirements.

• Implement soft delete for User aggregate using the ISoftDeletable interface from the shared kernel
• Add API endpoints for managing deleted users:
  • GET /api/users/deleted - list deleted users with pagination
  • POST /api/users/{id}/restore - restore a soft-deleted user
  • DELETE /api/users/{id}/purge - permanently delete a single user
  • POST /api/users/deleted/bulk-purge - permanently delete multiple users
  • POST /api/users/deleted/empty-recycle-bin - purge all deleted users
• Create "Recycle bin" tab on the Users page with restore and purge functionality, accessible only to Owners and Admins
• Add SmartDate component and useSmartDate hook for auto-updating relative time display ("Just now", "5 minutes ago", "2 hours ago"), used in the Users table for Created and Modified columns
• Simplify formatDate utility to use fixed English month names for consistent formatting across browsers
• Add comprehensive backend tests for soft delete, restore, single purge, bulk purge, and empty recycle bin operations
• Add test verifying soft-deleted users cannot log in (returns fake login ID and sends unknown user email)
• Add E2E tests covering the complete soft delete workflow including tab navigation, restore, and permanent deletion
• Rename ForceHardDelete to ForcePurge and MarkForHardDelete to MarkForPurge in the ISoftDeletable interface for consistency
• Improve E2E test reliability and fix back-office tests by dynamically reading internal email domain from platform-settings.jsonc

Checklist

• I have added tests, or done manual regression tests
• I have updated the documentation, if necessary

[linear]

PP-736 Backend for user soft delete API

[sonarqubecloud]

Quality Gate passed

Issues
8 New issues
0 Accepted issues

Measures
0 Security Hotspots
44.5% Coverage on New Code
0.8% Duplication on New Code

See analysis details on SonarQube Cloud

[github-actions]

Approve Database Migration account-management database on stage

The following pending migration(s) will be applied to the database when approved:

• AddUserSoftDeleteAndEmailConstraint (20260103000000_AddUserSoftDeleteAndEmailConstraint)

Migration Script

BEGIN TRANSACTION;
IF NOT EXISTS (
    SELECT * FROM [__EFMigrationsHistory]
    WHERE [MigrationId] = N'20260103000000_AddUserSoftDeleteAndEmailConstraint'
)
BEGIN
    ALTER TABLE [Users] ADD [DeletedAt] datetimeoffset NULL;
END;

IF NOT EXISTS (
    SELECT * FROM [__EFMigrationsHistory]
    WHERE [MigrationId] = N'20260103000000_AddUserSoftDeleteAndEmailConstraint'
)
BEGIN
    EXEC(N'CREATE UNIQUE INDEX [IX_Users_TenantId_Email] ON [Users] ([TenantId], [Email]) WHERE [DeletedAt] IS NULL');
END;

IF NOT EXISTS (
    SELECT * FROM [__EFMigrationsHistory]
    WHERE [MigrationId] = N'20260103000000_AddUserSoftDeleteAndEmailConstraint'
)
BEGIN
    INSERT INTO [__EFMigrationsHistory] ([MigrationId], [ProductVersion])
    VALUES (N'20260103000000_AddUserSoftDeleteAndEmailConstraint', N'10.0.1');
END;

COMMIT;
GO