Remove UsersTab, GroupsTab, TagsTab, SystemTab and their specs; delete the monolithic +page.server.ts with shared load + 6 form actions (all now handled by dedicated sub-route servers under users/, groups/, tags/). Add delete action and confirmation button to user edit panel. Fix test to query the edit form by id rather than the first form in DOM. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>