Prd

It runs discovery first, inspecting your actual code, tests, and docs before writing anything, then breaks work into phases with concrete checkboxes a junior dev or AI agent can execute. The validation policy is smart: it picks the right mix of unit tests, API checks, browser automation, or manual smoke tests based on what you're actually changing, not some one-size-fits-all recipe. Useful when you need implementation plans that won't instantly go stale or when handing work to agents that need more structure than a chat prompt. Splits into multiple files automatically when plans get big.