4e33158d8d
- Implement QuotaChecker for project and storage limits - Check project count before creation (respect max_projects) - Check storage availability before upload - Get quota status with usage percentages - Update storage usage (increase/decrease) - Define warning levels (normal/warning/critical/exceeded) - Add ProjectRepository interface for project counting - Add 14 comprehensive unit tests (all passed) Phase 4 Task 22/68 completed