Agent Skills: implement-feature

This skill should be used when implementing non-trivial software features that require planning, review, testing, and documentation. It orchestrates a team of specialized development agents (Groucho, Chico, Zeppo, Harpo) through a rigorous 7-phase workflow to ensure features are properly architected, implemented, reviewed, verified, and documented. Use this skill for multi-file features, new functionality, or any work where quality and thoroughness matter. Do not use for trivial single-line fixes or quick experimental prototypes.