<objective>
Archive phase directories from completed milestones into `.planning/milestones/v{X.Y}-phases/`.
Use when
has accumulated directories from past milestones.
</objective>
<execution_context>
@{{PLATFORM_ROOT}}/get-shit-done/workflows/cleanup.md
</execution_context>
<process>
Follow the cleanup workflow at @{{PLATFORM_ROOT}}/get-shit-done/workflows/cleanup.md.
Identify completed milestones, show a dry-run summary, and archive on confirmation.
</process>