The default answer to "should we add this?" is no. The burden of proof is on the addition.

Additive Bias Defense

Note (#444): Frontmatter declares provides.guidance, not provides.contract. The scrutiny questions are consumed by partner skills (pensive:code-refinement, conserve:unbloat, imbue:scope-guard) that voluntarily embed them; no validator or hook in leyline enforces them directly. If a future contributor adds enforcement, restore the contract label and link the validator path here.

The Problem

LLMs are additive by nature. They reinvent wheels, add unnecessary complexity, hallucinate issues and modify tests to justify them, and deviate from priorities. This contract provides a systemic defense.