What problem does it solve? Codebases accumulate dead code, over-engineered abstractions, duplication, and hygiene debt that increase maintenance cost and obscure intent. This Skill systematically eliminates KISS, YAGNI, Idiomatic, and Hygiene violations through a gated, verifiable workflow that never changes intended behavior. ## Core Features & Use Cases - Violation Detection: Surveys scoped code against a language-agnostic catalog of KISS, YAGNI, Idiomatic, and Hygiene violations, with optional fallow-based dead-code analysis for TypeScript/JavaScript diffs. - Safe Simplification: Removes dead code, inlines thin wrappers, merges duplicate paths, and simplifies conditions while keeping public interfaces and behavior stable. - Verified Cleanup: Runs tests after every change, audits its own git diff for self-introduced artifacts, and reverts to a known-good state if verification fails. - Use Case: After a feature sprint leaves behind unused helpers, commented-out blocks, and redundant wrappers, run this Skill on the changed files to strip the waste, confirm tests pass, and receive a terse report of every removal. ## Quick Start Ask the agent to purify the current uncommitted changes or a specific file path, for example by requesting a cleanup of the src/utils module.