Why Investigate the motivation and intent behind code. Why was it built this way? What edge cases were considered? What product, business, or operational constraints shaped the design? What alternatives were rejected, and on what grounds? This is a companion to the skill. answers "what does this do and how does it work"; answers "what forces led to this being the shape it is". How this skill works Historical context is spread across seven evidence categories: source control history, issue or ticket tracking, long-form documents, real-time team chat, infrastructure observability, error or exce…