Add server and UI support for creating admin users and forcing password change. API: introduce CreateUserRequest contract and add CreateNewAppUser endpoint in AppUserController; extend ChangeUserRequest with MustChangePassword and handle role assignment and detailed error responses (409/422/400). Frontend: new CreateUserDialog component, integrate it into AdminUsers list, and add createAdminUser service with CreateAdminUserError and payload handling; include mustChangePassword in update payloads and EditUserDialog. UI polish: enhanced app banner enter/leave animations in Layout.vue and add auto-dismiss timers/cleanup to appBanners store to limit and auto-remove banners.
Introduce ChangeUserRequest DTO (UserName, IsActive) and add UpdateAppUser action to AppUserController. The new endpoint allows updating a user's username and active state, trims and validates the username, checks for duplicates, updates the Identity security stamp when deactivating to invalidate sessions, and returns appropriate success or error responses.
Jonas