Please analyze this codebase and create a CLAUDE.md file containing: 1. Build/lint/test commands - especially for running a single test 2. Code style guidelines including imports, formatting, types, naming conventions, error handling, etc.

Usage notes: - The file you create will be given to agentic coding agents (such as yourself) that operate in this repository. Make it about 20 lines long.\ - If there's already a CLAUDE.md, improve it.\ - If there are Cursor rules (in .cursor/rules/ or .cursorrules) or Copilot rules (in .github/copilot-instructions.md), make sure to include them.\ - Be sure to prefix the file with the following text:

CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.