Runtime implementation for MediatorLite -- AddMediatorLite() DI extension, the ThrowingMediator diagnostic fallback, the generated SourceGeneratedMediator (implements IMediator via ValueTask typed-switch dispatch), MediatorDiagnostics (ActivitySource + DiagnosticListener), and the Validation subsyst
Runtime implementation for MediatorLite -- AddMediatorLite() DI extension, the ThrowingMediator diagnostic fallback, the generated SourceGeneratedMediator (implements IMediator via ValueTask typed-switch dispatch), MediatorDiagnostics (ActivitySource + DiagnosticListener), and the Validation subsystem (ValidationBehavior + DataAnnotationsValidator). Use when touching dispatch, DI registration, dia