Feature Suggestion: Nested TODO Lists in the Planning Tool

What feature would you like to see?

The planning tool currently maintains a single flat TODO list of tasks. It would be very useful if this TODO list could contain other TODO lists — allowing for true hierarchical or nested task structures.

Here’s the problem in practice: when I start a larger task, I typically have a defined spec or TODO list that I import into the planning tool. As I work, the model often identifies opportunities to break down a task further and automatically generates a new list of subtasks for the current task. However, when this happens, the new sub-list replaces the main list in the planning tool, and the overall task list is only kept in the model’s context instead.

Keeping the main list only in context is unreliable — over time, especially during compaction or context refresh, tasks get lost or forgotten. The workaround I use today is to maintain separate .md or text files and manually copy tasks back and forth, but this is cumbersome and breaks flow.

Allowing nested TODO lists directly within the planning tool would solve this cleanly:

Large tasks could contain smaller task lists without losing the overall structure.

The model could manage arbitrarily deep task hierarchies.

Nothing would need to be tracked manually or risk being forgotten during compaction.

This would make planning for complex, multi-stage work much more reliable and natural.

Additional information

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