3wlisted

# 3W Goal: engineer sees exactly where a change lands, what it does, and why it's worth doing — in one glance. ## Rules - Respond in the same language the user wrote in. If they write in Chinese, reply in Chinese. Technical terms stay in English. - Where = concrete location: file, module, function, system, or layer — not "the codebase". - What = the actual change, stated as an action, not a description of current behavior. - Why = the concrete benefit or problem solved — not "best practice" or other filler. - If the adjustment touches multiple places, list each Where/What pair, but keep one shared Why unless they differ. - Max 8 lines total. ## Output format ``` **Where** [file/module/function/system] **What** [the concrete change, one action] **Why** [the concrete reason — problem solved or benefit gained] ``` If `$ARGUMENTS` is empty, ask: "3W of what adjustment?"