This is an off-cycle post for ai-that-works.
plan mode only works for order-1 difficulty tasks.
if you task is order-0, one shot it
order-1, plan mode
order-n, you need a recursive plan mode where you grill into increasing levels of depth at each layer.
for implementing test syntax, i had 4 times i had to create a "plan" just in this run (and 2 phases of defining the ticket)