文档页评论区需要评论版本绑定与过时置灰能力

来源证据

文档页评论区中，针对旧版 API 的评论会悬挂在更新后的页面下，被读者视为比正文更权威的信息，逐渐变成误导；需要将评论固定到其写作时的页面版本，并在相关章节变化后置灰。

Docs is the right wedge and also the hardest one. A comment answering a question about the old API sits under the new page forever and reads more authoritative than the docs above it, so the thread quietly turns into misinformation. If a comment can be pinned to the version of the page it was written against, and greyed out when that section changes, that's the bit I'd pay for. Everything else on the list is a widget, that one is a product.