AGENTS.md as the one project guide for every coding agent, with hooks for Claude Code, Codex, Cursor and OpenCode that block destructive commands and secret writes. Claude Code and OpenCode also lint on write and format the agent's edits; Claude Code gets CLAUDE.md and Cursor a rule pointing at AGENTS.md.
Bun TypeScript hook helpers and tested Claude Code guards on top of agent-ops (destructive commands, package manager, generated files, typecheck on write), plus /check, /test and /feature commands, architect and reviewer agents, and a docs/harness.md guide.
Enables the claude-essentials (ce) Claude Code plugin for the project and adds path-scoped rules that point Claude at its skills for testing, error handling, debugging, and writing.