What are conflicts in the sync-health view?

A conflict is a moment where a channel’s value disagreed with the hub’s truth and had to be corrected, typically an out-of-band edit on the channel or a stale echo. Singles are routine and self-heal; a pattern on one channel points at something worth a look (a second tool writing quantities, usually), and the sync-health view exists so patterns are visible instead of silent, the troubleshooting guide.