This is the Codex-compatible form of the important stable guidance from CLAUDE.md.
Then read the relevant domain skill for the part of the codebase you are touching.
- Inspect the workspace root, relevant crate layout, feature flags, and tests before editing.
- Match existing patterns and prefer the smallest coherent change.
- Keep behavior changes, tests, and docs in the same change.
- Pass dependencies explicitly; do not hardcode ports, paths, URLs, credentials, or feature switches.
- Verify locally before handing off.