Add CLAUDE.md for Claude Code guidance

[apietosi]

Summary

• Adds a CLAUDE.md file to help Claude Code understand the project structure and conventions when working in this repository

What's included

• Setup and installation instructions (venv, pip, dev dependencies)
• Both communication backends explained (ReaScript via reapy vs OSC via python-osc) with default ports and tradeoffs
• All entry point files documented (simple, OSC, windsurf, full package)
• Tool domain module reference table (8 modules with their responsibilities)
• config.json key fields and mastering preset structure
• Workflows and examples directories explained

🤖 Generated with Claude Code