What problem does it solve? Code reviews often focus on correctness while diffs quietly accumulate reinvented stdlib functions, needless dependencies, and speculative abstractions that inflate maintenance cost. This Skill audits a diff purely for unnecessary complexity and tells you exactly what to cut. ## Core Features & Use Cases - Over-Engineering Detection: Flags dead code, hand-rolled stdlib equivalents, redundant dependencies, single-implementation abstractions, and verbose logic using five tags: delete, stdlib, native, yagni, shrink. - One-Line Findings: Outputs each finding as a single line with location, what to cut, and its replacement, ending with a net line-reduction score. - Use Case: Before merging a pull request that adds a custom retry wrapper, a moment.js import for one format call, and an AbstractRepository with one implementation, run this review to get findings like L4: native: moment.js imported for one format call. Intl.DateTimeFormat, 0 deps. ## Quick Start Review this diff for over-engineering and list everything that can be deleted or replaced with standard library features.
