The instructions for every coding agent (Claude Code, GitHub Copilot, Codex, Cursor, ...) are in CLAUDE.md. Read it before you change anything. This file doesn't repeat its rules.
- Procedures (adding or changing a client method, checking the live API, writing an ADR, prose style):
.claude/skills/*/SKILL.md. - Review checklist:
.claude/agents/reviewer.md. - Binding architecture decisions:
docs/adr/.