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Journey J1 / renderer.ipcCallsToFirstCard: 12 -> 7. - PlaylistsService.getAllPlaylists() shares one in-flight SQLite read between concurrent callers (the playlist effect and the XMLTV source reconciliation at startup). Settled reads are never reused and every SQLite write detaches the pending read. - getM3uFavoriteChannels() stops re-reading the write-once IndexedDB -> SQLite migration receipt once it has been seen. - StartupDeferralService holds the download list, app update status and the dashboard's recent items and favorites until one task after the render that reveals the routed content (5 s safety timeout). IPTVNATOR_DISABLE_STARTUP_DEFERRAL=1 is the kill switch. - reconcileEpgSources and the two distinct migration-flag reads stay on the critical path: the first is the #1548 revision fence, the second are different keys, not duplicates. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>