CLAUDE.md

• ALWAYS strive for the most simple and maintainable solution
• ALWAYS add package with uv as in uv add or uv add --dev
• use python 3.12+ typing annotation (dict, list, | None)
• ALWAYS format the code with ruff
• ALWAYS check the code with ruff
• ALWAYS verify types with mypy
• Use ZoneInfo from python standard library. Preferred timezone is Europe/Zurich. Preferred format for display is isoformat.
• Use TDD London Style approach to tests all your changes.
• When committing changes or creating PR DO NOT mention Claude Code as co-author.