simplify-code

# Simplify Code Review code for reuse, quality, efficiency, and clarity issues, then fix them. ## Step 1: Determine the Scope Determine what to review: - If a specific **diff command** was provided (e.g., `git diff --cached`), use that. - If a **file list or directory** was provided, review those files directly (read the full files, not a diff). - If **neither** was provided, determine the appropriate diff command (e.g., `git diff`, `git diff --cached`, `git diff HEAD`) based on the current git state. If there are no git changes, review the most recently modified files mentioned in the conversation. ## Step 2: Launch Four Review Agents in Parallel Use the Agent tool to launch all four agents in a single message (`model: "opus"`, do not set `run_in_background`). Pass the scope from Step 1 to each agent. ### Agent 1: Code Reuse Review For each change: 1. **Search for existing utilities and helpers** that could replace newly written code. Look for similar patterns elsewhere in the codebase — common locations are utility directories, shared modules, and files adjacent to the changed ones. 2. **Flag any new function that duplicates existing functionality.** Suggest the existing function to use instead. 3. **Flag any inline logic that could use an existing utility** — hand-rolled string manipulation, manual path handling, custom environment checks, and similar patterns are common candidates. ### Agent 2: Code Quality Review Review the same changes for hacky patterns: 1....