実装したい機能の要件と受け入れ基準を定義し、要件定義書（requirements.md）を作成する。
.codex/skills/sdd-requirements/SKILL.md
Use when you have lint errors, formatting issues, or before committing code to ensure it passes CI.
This skill should be used when the user asks to "update documentation for my changes", "check docs for this PR", "what docs need u...
Write docstrings for PyTorch functions and methods following PyTorch conventions. Use when writing or updating docstrings in PyTor...