When Syncthing Faithfully Shipped a Disaster

The Mac had been offline for a while. When it reconnected to Syncthing at 21:03 UTC on a Saturday night, the LXC’s puller took less than fifteen minutes to start applying the delta: 2,657 file deletions, 574 frontmatter prunes stripping 74,118 lines against just 809 additions, and 166 Apple-style <name> 2.md conflict copies scattered across half the vault.

Nothing was…