f12c29103c
The project detail page called useQuery inside .map() to fetch file requirements per round, violating React's rules of hooks. When competitionRounds changed from [] to [round1, round2], the hook count changed, causing React to crash with "Cannot read properties of undefined (reading 'length')". Fix: Add listRequirementsByRounds endpoint that accepts multiple roundIds in one query, replacing the dynamic hook pattern with a single stable useQuery call. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>