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 below in a single assistant message so they run concurrently. Each Agent call uses model: "opus" and does not set run_in_background. Pass the scope from Step 1 to each agent.

Agent 1: Code Reuse Review

For each change: