This separation of planning and execution resonates deeply with how I approach task management in general, not just coding.

The key insight here - that planning and execution should be distinct phases - applies to productivity tools too. I've been using www.dozy.site which takes a similar philosophy: it has smart calendar scheduling that automatically fills your empty time slots with planned tasks. The planning happens first (you define your tasks and projects), then the execution is automated (tasks get scheduled into your calendar gaps).

The parallel is interesting: just like you don't want Claude writing code before the plan is solid, you don't want to manually schedule tasks before you've properly planned what needs to be done. The separation prevents wasted effort and context switching.

The annotation cycle you describe (plan -> review -> annotate -> refine) is exactly how I work with my task lists too. Define the work, review it, adjust priorities and dependencies, then let the system handle the scheduling.