CLAUDE.md and AGENTS.md, In Depth: From Basics to Counterintuitive Patterns
From Anthropic's official guidance to Karpathy's program.md paradigm, from the two-strikes rule to Darwinian memory, from Spec-Driven to Eval-Driven — a long-form survey of how we write project files for AI coding agents, and the counterintuitive mental models worth borrowing.