fix: Resolve backend build errors - add RootNamespace, OutputType, GlobalUsings, and code analysis settings

src/KArtSell.Host/KArtSell.Host.csproj

@@ -6,6 +6,7 @@
     <PackageReference Include="FastEndpoints" />
     <PackageReference Include="Hangfire.AspNetCore" />
     <PackageReference Include="Hangfire.PostgreSql" />
+    <PackageReference Include="Newtonsoft.Json" VersionOverride="13.0.3" />
     <PackageReference Include="Npgsql" />
     <PackageReference Include="Polly" />
     <PackageReference Include="Serilog.AspNetCore" />

src/KArtSell.Host/Program.cs

@@ -44,7 +44,7 @@ builder.Services.AddSingleton<IDbConnectionFactory, NpgsqlConnectionFactory>();
 builder.Services.AddSingleton<IOutboxWriter, DapperOutboxWriter>();
 builder.Services.AddSingleton<IInboxStore, DapperInboxStore>();
 builder.Services.AddSingleton<IJobRunRepository, DapperJobRunRepository>();
-builder.Services.AddSingleton<IClock, SystemClock>();
+builder.Services.AddSingleton<IClock, KArtSell.BuildingBlocks.Time.SystemClock>();
 
 builder.Services.AddProblemDetails();
 builder.Services.AddFastEndpoints();