- IContextualSerilogLogger<T> / ContextualSerilogLogger<T> in Services/Logging
(handlers get a ForContext<T>-scoped logger via DI, consistent with ItemTracker)
- SerilogRegistrar extension on WebApplicationBuilder (Api)
- SerilogRegistrar extension on HostApplicationBuilder (Worker)
- Both registrars: set Log.Logger, wire Logging + Host/Services, register ILogger singleton
- ServiceCollectionExtensions: register IContextualSerilogLogger<> as transient
- Program.cs in both apps simplified to single builder.AddSerilog() call
Ref: IT-628
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
- Rename Template -> EmailTemplate, Provider -> EmailChannel,
ProviderSettings -> EmailChannelSettings, ProviderType -> EmailChannelType,
ProviderUsage -> EmailChannelUsage throughout all layers
- Add Undefined = 0 to EmailChannelType enum for safe default handling
- Remove SaveChangesAsync from EfRepository methods — repositories now only stage changes
- Add SaveChangesAsync to IUnitOfWork and EfUnitOfWork
- Add TransactionBehavior MediatR pipeline: wraps every handler in a transaction,
saves and commits on success, rolls back on exception
- Add MediatR package reference to Services project
Ref: IT-628
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>