Refactored the `InstitutionContractListStatus.PendingForRenewal` logic in `InstitutionContractRepository.cs` to include additional checks for conflicting contracts.
Updated `OnPostShiftDateNew` in `Index.cshtml.cs` to be asynchronous, removed unused code, and added a call to the new `UpdateInstitutionContract` method.
Introduced `UpdateInstitutionContract` to filter contracts by a predefined list of IDs and streamline related entity inclusion.