The original title is: "Stop AI Agent Drift Across Sessions With Versioned, Grep-able Rules"

Short summary

Introduces Reusable Decision Units (RDUs) — versioned markdown files with grep-able triggers and committed judgments — as a solution to AI agent drift across sessions. Each RDU encodes a repeatable decision with YAML frontmatter, trigger conditions, situation context, and a definitive judgment. The author runs 140+ RDUs across domains including iOS deployment, trading, and game development.

• •Agent drift can't be fixed with bigger CLAUDE.md files — decisions need versioning
• •RDUs are markdown files with grep-able triggers, committed judgments, and explicit evolution tracking
• •Each structural element (trigger, situation, judgment, version, sources) prevents a specific failure mode

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