0.4.0
Rules consolidation — focused rule set, GitHub Copilot support, new categories.
Highlights
47 → 17 rules. The core rule set has been consolidated to the rules that matter most. Opinionated and agent-specific rules moved to
https://github.com/reporails/recommended.
GitHub Copilot CLI is now a supported agent alongside Claude Code and Codex — with agent config, custom instructions, and 2 Copilot-specific rules.
New categories. Governance and Maintenance join Structure and Content as core rule categories.
Breaking changes
- Complete coordinate renumbering — all coordinates reassigned from fresh sequence. If you reference rule IDs in tooling or configs, update them against
registry/coordinate-map.yml. - Rule removals — 30 rules removed from core/agents. Most are available in https://github.com/reporails/recommended as RRAILS_ rules.
Test harness
- Agent excludes in config.yml — wildcard patterns like CLAUDE:* skip irrelevant rules
- --agent flag scopes discovery to that agent's rules plus core
What's next
- Tombstone backfill for pre-0.4.0 coordinates (planned post-0.5.0)
- Efficiency category rules (currently empty)