The language of product truth

The ideas Stewie is built on, defined plainly. Each page is the canonical reference for a term — what it means, why it exists, and how it fits together.

• Context Promotion

  The practice of turning raw agent work into scoped, evidenced, reviewable context that another agent or human can safely continue from.

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• Product Behavior Contract (PBC)

  A Markdown-first, evidence-grounded spec of what a software product promises to do — readable by every role, auditable by anyone.

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• Agent Context Crystallization

  The practice of turning volatile AI coding-agent session context into durable, inspectable artifacts — checkpoints and crystals — before compaction destroys the why.

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