NEW: docs/AUTHORING-GUIDE.md — canonical style guide for writing contracts
Patterns borrowed from Anthropic's frontend-design skill:
- Ground it in the subject: verify live state before writing
- Two-pass process: draft → critique → revise → ship
- Restraint: one contract, one concern; cut one thing before shipping
- Self-critique: would an agent trust this at 3am with 30s of context?
Core rules:
- Specificity over generality (lists rot, vagueness is invisible)
- Live-state fields in tables, not prose (grep-able)
- Descriptions answer: what, to what, why care?
- Templates for function and responsibility contracts
- CI enforces structure; author enforces quality
Linked from AGENTS.md for agent discovery.
