Renamed all `Guid` properties and parameters to `Id` in update procedure interfaces, records, and handlers. This clarifies that the identifier is a numeric ID, not a GUID, and improves consistency across the codebase. All related method signatures and usages have been updated accordingly.
Refactored Delete/Insert/UpdateEndpointAuthProcedure records into the new ReC.Application.EndpointAuth.Commands namespace for better organization. Updated using statements in related files to ensure compatibility. No functional changes to the procedure records themselves.
