Each yt-dlp call is a separate subprocess that opens a new HTTP session with
YouTube. 64 sessions in a row looks like a bot regardless of rate limiting.
Changes:
- crawl_by_search: 30 queries → 10 (top 5 tags, 4 channel names, 1 serendipity)
- update_liked_signal: 10 queries → 4
- update_watch_signal: removed (tags already included in crawl_by_search)
- update_trending_signal: 2 regions → 1 (first region only)
- update_graph_signal: 12 sampled channels → 6
New total: ~21 yt-dlp calls per run (~105s with 5s gaps) vs ~320s before.
Signal quality is preserved — the removed queries were low-marginal-value
duplicates of content already covered by the remaining ones.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Mattias Thall
e6faf8e08e