- Create economyUtils.ts with team-aware buy type classification
(CT has higher thresholds due to M4 cost)
- Add Economy Overview toggle to rounds page with charts
- Resolve player names/avatars in round economy display
- Remove standalone Economy tab (merged into Rounds)
- Document missing backend API data (round winner, win reason)
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
