- Implemented a new function `validateStageAdvancements` to ensure the integrity of stage advancements in tournaments, including checks for valid indices, types, and configurations.
- Enhanced the `isGroupAdvancementReady` function to verify group readiness based on match completion and participant positions.
- Updated the tournament management interface to include new validation logic, improving the overall robustness of tournament setup.
- Refactored tournament-related components to improve user experience and ensure accurate data handling across the application.
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