Tools live under tools/<role>/<domain> (checks, generate, release, ci, dev), every tool is a workspace named @open-pencil/<domain>-tools, a shared tools/tsconfig.json backs the new check:tools gate that fixed 55 latent type errors, test:tools runs through bun --filter, the placement check is its own checks/test-homes package, and every tool resolves the repository through resolveWorkspaceRoot. Bun, Node, and mdast types live in a tools-root workspace so they never reach the app program.
Root AGENTS.md becomes a map plus cross-cutting rules; folder rules live in one AGENTS.md per package and top-level folder, checked by check:docs. CONTRIBUTING.md owns process; README and the docs page link to it. Release preparation copies the root LICENSE into every published package, Core, CLI, and MCP gain READMEs, and the release workflow test packs its fixture in-process instead of through npm.
