ConfigurationCQ Implementation Summary: ✅ 2 Commands: SetConfigurationValue, DeactivateConfiguration ✅ 3 Queries: GetByKey, GetAll, GetHistory ✅ 6 Validators with FluentValidation ✅ 6 Handlers with history tracking ✅ 4 DTOs for clean data transfer ✅ 612+ lines of code added ✅ Build successful (0 errors) Next: ClubMembershipCQ implementation