Core principles for clean, maintainable, minimal code generation. Merged 2026-08-09 from coding-style.md + andrej-karpathy-skills.md + karpathy-coder + minimalist; extended 2026-08-15 with reviewed ponytail mechanics (DietrichGebert/ponytail, MIT) and the code-simplifier over-simplification guard (Anthropic claude-plugins-official). Enforces Karpathy's 4 principles (think before coding, simplicity first, surgical changes, goal-driven execution), the Minimalist Efficiency Ladder (YAGNI → reuse → stdlib → native → existing deps → one-liner → minimum code), clean-deletion rules, lazy-senior intensity levels (lite/full/ultra), trade-off markers, compressed output format, and …
