Plan Retrospective

Purpose

This skill is the closing step of the planning lifecycle:

idea-to-prd  →  prd-to-design  →  design-to-tasks  →  tasks-to-code  →  plan-retrospective
  (what/why)      (architecture)     (task list)         (build)             (close)

It formally closes a plan by computing what was actually built versus what was planned, capturing decisions and lessons, and archiving the plan folder with a complete record. Without this step, institutional knowledge from the implementation is lost.

File Structure

This skill reads plans/<name>/prd.md, tasks.md, and decisions.md (if present), writes plans/<name>/retro.md, then moves the folder to plans/archive/<name>/. The full plans/ layout and the active → archive lifecycle are defined in shared conventions.

Rules: