9993ebb2b4
Adds DELETE /api/orgboard/tasks/{id} (WorkTasks permission) and a "Delete task" button
in the task drawer (with confirm). Children are detached (kept as top-level) rather than
deleted; status-transition history is dropped. There was previously no way to remove a task.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>