- Add unique index on (team_id, season_id, snapshot_date) in team_standings_snapshots
so concurrent writes can't produce duplicate rows (migration 0051)
- Rewrite createDailySnapshot to use INSERT ... ON CONFLICT DO UPDATE inside a
transaction, replacing the SELECT-then-insert/skip pattern (N+1 queries, race-prone)
- Remove early-exit guard in server/snapshots.ts background job so it always
upserts rather than skipping seasons that already have a snapshot for today
- Call createDailySnapshot in recalculateAffectedLeagues after recalculateStandings,
so every bracket score update refreshes today's snapshot; wrapped in try/catch so
a snapshot failure can't block Discord notifications
- Also call createDailySnapshot from the admin rescore and finalize-bracket actions
- Fix UTC date bug: replace toISOString().split('T')[0] with local date parts in
both standings.ts and server/snapshots.ts (and the 7-day lookback query)
- Convert all dynamic await import() calls in bracket.server.ts to static imports
Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
