- **delegate**: Create a subtask under the current task. Validates the delegation chain (main_pm->cell_pm; cell_pm->its team's devs) and the assignee-vs-task_type rule (Cell PMs get planning-typed tasks; devs get code/research, UX devs also design). documentation is NOT delegatable — the lifecycle auto-creates the doc phase after the code subtask passes QA.
- **reassign**: Hand a claimed/in_progress task to another developer in your own cell. The branch is keyed to the task (not the agent), so it is preserved — the new developer continues the work-in-progress. No status change.