gendesign/tradein-mvp/backend/data
bot-backend 8436532bf4
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feat(listings): card_hash column + snapshot-dedup on unchanged cards
Adds listings.card_hash (SHA-256 of volatile SERP-card fields) computed and
stored on every scrape. Skips the redundant per-day listings_snapshots write
when a listing's card is unchanged. listings.last_seen_at/is_active still
bumped on every sighting (delisting TTL). Lays groundwork for detail-refresh
gating (C2).
2026-06-18 22:01:54 +03:00
..
sql feat(listings): card_hash column + snapshot-dedup on unchanged cards 2026-06-18 22:01:54 +03:00