Track how many emails were already up-to-date (skipped) and the approximate bytes transferred per sync cycle. SyncEmailsResult accumulates fetched/skipped/bytes across mailboxes; DB schema v11 adds emailsSkipped and bytesTransferred columns to sync_logs. SyncLogScreen shows "X new · Y up-to-date · took Zs" in the tile subtitle with full detail rows in the expansion panel. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>