agent task
Very rough "unit of work that an agent does"
- Can be link not tracked or link not tracked
- Can be run by itself or run by link not tracked.
- Can be aligned with an link not tracked, or not.
- Can be triggered lots of different ways
- Can generate a pull request - PR at the end, if the agent is a coding agent, but doesn't have to.
- Can have subtasks, which are just tasks themselves