Harness Engineering Setup

Build harness in 3 stages, ordered by impact. Stop after any stage if user is satisfied — each delivers value standalone. See REFERENCE.md for theory.

Stage 1 — Inform (AGENTS.md + CLAUDE.md stub)

1. Detect project stack from package.json, Cargo.toml, pyproject.toml, go.mod.
2. Draft AGENTS.md (≤ 60 lines) using templates/AGENTS.md. Pre-fill Project Stack only.
3. Mark Forbidden and Past Failures as # DRAFT — review required.
4. Write CLAUDE.md containing one line: @AGENTS.md (Claude Code import directive).
5. Show diff. Require explicit confirmation before save.
   • Warn: "ETH Zurich research: LLM-generated AGENTS.md drops agent performance 3% and raises cost 20%. Past Failures must come from real incidents — leave empty if none."

Pnpm is the standard. AGENTS.md fixes Package manager: pnpm. Refuse to set otherwise.

Stage 2 — Constrain (permissions)