Ponytail: Lazy Senior Engineer Skill

The Ponytail plugin enforces a “lazy senior engineer” style, reducing code to the minimal functional line—e.g., replacing a 44-line CacheManager with a single @lru_cache-decorated function, cutting 48 lines and eliminating bugs. It integrates with 14+ AI coding agents, runs benchmarks on a FastAPI + React repo, and prioritizes standard-library and native solutions while enforcing YAGNI principles.