How to write skills, CLAUDE.md/AGENTS.md, fix logs, and handoff documents that a weaker or zero-context model can actually execute. Load when authoring or updating any instruction file, SKILL.md, project memory, or institutional-knowledge document — including when converting lessons from a session into durable files — and when about to act on a recorded capability-negative ("no such flag", "the API can't do X") found in one. Not for writing user-facing docs or code comments.
