Simplify: Code Review and Cleanup

Review all changed files for reuse, quality, and efficiency. Fix any issues found.

Phase 0: Gate — Scope & Tools

Determine what changed and what tooling is available before any analysis.

Scope detection

Run git diff (or git diff HEAD if there are staged changes) to see what changed. If there are no git changes, review the most recently modified files that the user mentioned or that you edited earlier in this conversation.

Graph-enhanced tooling gate

If the code-review-graph MCP plugin is available, probe and ensure freshness:

1. Call build_or_update_graph_tool(base=<base>) to run an incremental update.