c00d5c7595
- Rewrite list_channels to run exactly 4 SQL queries regardless of channel count: channel rows, aggregated video stats (GROUP BY), new-video counts, and latest video (derived-table JOIN replaces per-row correlated subquery) - Remove dead _CHANNEL_STATS_SELECT (orphaned after the rewrite) - Fix upload_frequency_days: use pre-computed date_span_days from vstats instead of a broken per-channel db.execute() call - Restrict new_counts query to id_csv so it uses idx_videos_channel_indexed - markChannelsSeen: optimistic setQueryData instead of invalidateQueries, eliminating a full channel-list re-fetch on every Following page visit - DownloadIndicator idle poll: 10s → 30s (no need to hit DB when idle) Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>