Clean Project

Remove build artifacts and temporary files.

What to Clean

1. Python:

   • __pycache__/ directories
   • *.pyc, *.pyo files
   • .pytest_cache/
   • .ruff_cache/
   • dist/, build/, *.egg-info/

2. Rust:

   • target/ directory (cargo clean)

3. Go:

   • bin/ directory (if exists)
   • go clean -cache (optional, ask first)