Phase 4: automation. ColumbiaCatalogSyncBackgroundService wakes hourly and
runs a full sync only when ColumbiaSyncEnabled is on and ColumbiaSyncIntervalDays
has elapsed since the last successful run (tracked via the ColumbiaLastSyncedAt
setting). No-ops quietly when disabled or unconfigured. The hourly due-check is
negligible; the actual sync runs at most once per interval. Sync failures are
recorded on the result/settings, never thrown, so a bad run can't kill the loop.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
spouliot
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