- /card player lookup was a leading-wildcard substring match with a Python
ulower() UDF over 6.16M player_games_hist rows — a full scan measured at
27s live before the ~2s render. Add a prefix fast-path
(nick LIKE 'name%' COLLATE NOCASE) that uses the existing NOCASE index
(~1ms), falling back to the ulower substring scan only when the prefix
finds nothing. Same fix applied to _resolve_player_uids_batch (compare/stats).
Lookup: 27,205ms -> 1ms.
- Completed-season recap cache served ANY cached PNG forever, including files
rendered mid-season (frozen at whatever point they were last viewed). Only
serve from cache when the file's mtime is after season end; otherwise
re-render. Fixed in both BOT/utils.py and web/server.js (shared cache).
- Replace squadron card "Rating change" with "Place finished" (#rank / total),
derived by ranking clans by final total_score among those active in-season.
- Add (CARD)/(RECAP) timing logs for prod observability.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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