at-simplify

What problem does it solve? Code changes often accumulate duplication, unnecessary complexity, and inefficient patterns that slip through review. This Skill systematically cleans up diffs, PRs, branches, or working-tree changes by finding reuse opportunities, simplifications, efficiency issues, and shallow fixes, then applying the improvements directly. ## Core Features & Use Cases - Four-Angle Parallel Review: Launches four concurrent review agents covering reuse, simplification, efficiency, and altitude (root-cause depth), each returning findings with file, line, and concrete cost. - Flexible Review Scope: Works on commit ranges, PRs, branches, file paths, staged changes, or uncommitted working-tree changes via git diff. - Automatic Fix Application: Deduplicates findings and applies fixes directly, skipping anything that would change intended behavior or fall outside the reviewed diff. - Use Case: Before merging a feature branch, run the Skill against the branch diff to catch copy-pasted logic, redundant state, and bandaid fixes, then have them cleaned up in one pass. ## Quick Start Ask the agent to run at-simplify on the current branch changes to find and fix duplication, complexity, and inefficiency before committing.