what do you write down before handing a task to an agent

Same instinct, but I moved the "don't touch" part out of the task. There's a global instruction file every project inherits, one per project on top, and 25 deny rules plus 91 hooks that block things before they run. So each task note is short: the goal, and where to check it worked. Each project also has a memory with one line per lesson, so the next session doesn't repeat the last one's mistake.