SE Good Plan

Purpose

Write or review engineering plans that are directly executable, proportionate to the problem, constrained by user-confirmed product intent, and continuously rebased on verified implementation facts rather than followed mechanically.

Product Authority First

A formal plan must have exactly one effective Product Authority Source for material product decisions.

Use this precedence:

1. an existing canonical PRD whose Confirmed Product Decisions section contains directly user-confirmed active decisions;
2. otherwise a fallback decisions.md created for this engineering topic.

Do not copy confirmed PRD decisions into decisions.md. If a qualifying PRD already governs the same scope, reference its stable PD IDs directly from the plan.

An existing PRD without protected directly confirmed decision rows is product context, not hard authority. Prefer getting the relevant decisions confirmed in that PRD. Use fallback decisions.md only when no suitable canonical product-authority section is available.