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

src/KArtSell.DbMigrator/KArtSell.DbMigrator.csproj

@@ -1,4 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+  </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="DbUp-PostgreSQL" />
   </ItemGroup>

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();

src/KArtSell.Modules.ModelOperations/Features/GetModelOperationsPlan/Endpoint.cs

@@ -9,7 +9,7 @@ public sealed class Endpoint : EndpointWithoutRequest<Response>
     {
         Get("/internal/v1/model-operations/plan");
         Roles("Quant", "Risk", "System", "Auditor");
-        Description(x => x.WithTags("ModelOperations"));
+        Tags("ModelOperations");
     }
 
     public override Task HandleAsync(CancellationToken ct)

src/KArtSell.Modules.ModelOperations/KArtSell.Modules.ModelOperations.csproj

@@ -4,5 +4,6 @@
     <PackageReference Include="FastEndpoints" />
     <PackageReference Include="Dapper" />
     <PackageReference Include="Hangfire.Core" />
+    <PackageReference Include="Newtonsoft.Json" VersionOverride="13.0.3" />
   </ItemGroup>
 </Project>

src/KArtSell.Modules.SignalEngine/Features/EvaluateResearchSellPolicy/Endpoint.cs

@@ -9,7 +9,7 @@ public sealed class Endpoint(SellPolicyChain policyChain) : Endpoint<Request, Re
     {
         Post("/internal/v1/research/sell-policy/evaluate");
         Roles("Quant", "System");
-        Description(x => x.WithTags("ResearchOnly"));
+        Tags("ResearchOnly");
     }
 
     public override async Task HandleAsync(Request req, CancellationToken ct)

src/KArtSell.Modules.SignalEngine/Features/GenerateSellDecision/Endpoint.cs

@@ -1,4 +1,6 @@
 using FastEndpoints;
+using Microsoft.AspNetCore.Http;
+using System.Text.Json;
 using KArtSell.Modules.SignalEngine.Application;
 
 namespace KArtSell.Modules.SignalEngine.Features.GenerateSellDecision;