- Updated `CommandManager` to include an `IEnvelopeReceiverService` constructor and a new property for service access. Added version printing functionality in the `Execute` method.
- Modified `AddCommandManagerRunner` in `DependencyInjection` to accept a connection string key name and added SQL Server caching configuration.
- Added `Microsoft.Extensions.Caching.SqlServer` package reference in the project file for caching support.