- Refactor game page into tab container with Game, Lineups, Stats tabs
- Extract GamePlay, LineupBuilder, GameStats components from page
- Add manager-aware default tab logic (pending + manager → Lineups tab)
- Implement per-team lineup submission (each team submits independently)
- Add lineup-status endpoint with actual lineup data for recovery
- Fix lineup persistence across tab switches and page refreshes
- Query database directly for pending games (avoids GameState validation)
- Add userTeamIds to auth store for manager detection
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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