Add Python development standards skill

[kamathramu87]

Summary

• Adds a new Claude Code skill (python-development-standards) with project-specific coding standards
• Covers uv as the sole project management tool (replaces pip/poetry/pipenv)
• Documents OOP principles: single responsibility, encapsulation, composition over inheritance, dataclasses for value objects
• Documents DRY and clean code rules: naming, pure functions, type annotations, error handling, comments, module organization
• Adds explicit rule: never use print — always set up a module-level logging.getLogger(__name__) logger with level guidelines

Test plan

• Skill content reviewed for accuracy against project conventions
• All existing tests still pass (make test)

🤖 Generated with Claude Code