Harness Engineering Core Principle The repo is the harness. Agent failures are harness failures. When an agent breaks a rule, fix the harness — not the agent. | Pillar | What It Solves | |--------|---------------| | Context Engineering | Agent hallucinations, wrong tool usage, stale docs | | Architectural Constraints | Boundary violations, silent regressions, ambiguous failures | | Garbage Collection | Entropy accumulation, dead code, doc drift | When to Apply | Situation | Action | |-----------|--------| | New repo setup for AI development | Apply all three pillars from day one | | Agent rep…