Agent runtimes

Roles

Runtime	Role	Discovery
Codex	Execution kernel / design baseline	AGENTS.md, .codex/, Codex plugin manifests
Claude Code	Primary follower	CLAUDE.md → AGENTS.md, .claude/, .claude-plugin/
Grok Build	Additional follower	Claude-compatible plugin tree (no third skill fork)

Rules

1. One canonical implementation — skills, hooks, review contracts written once.
2. Classify every runtime-dependent change as shared, adapter, or intentional gap.
3. Never synchronize transcripts, goals, plans, memories, or session state across runtimes.
4. Grok does not get a separate plugin.json tree in v0.1 — it consumes the Claude-compatible surface.

Reviewers

Shared contract: conventions/review.md
Adapters: .codex/agents/* and .claude/agents/*