python-cli-engineering

Modern Python CLI application development using UV package manager, Ruff linting/formatting, Pyright strict type checking, Typer framework, and Rich console output. Use when building command-line tools, data processing applications, admin utilities, or developer tooling. Covers fail-fast error handling, dual configuration (YAML + .env with pydantic-settings), modular architecture with size constraints, SQLAlchemy patterns, and professional CLI UX design.