coding

Development discipline from plan to green. New behaviour and known-cause fixes go red-green-refactor with the failing test watched red first, pure refactors go green-to-green with no manufactured red, and how-should-I-write-this questions get verified against current sources before answering. Use when the user says 写个新功能 / 修个 bug / implement this / 重构这段 / TDD / 该不该先写测试 / 这个 API 现在的推荐写法 / 你确定吗 (a correction right…