docs(prd): target .NET 10 LTS instead of 9 (refs #28)

The PRD pinned ".NET 9 (LTS at iteration time)", but .NET 9 is STS and
reaches end-of-life around now; the actual LTS at this iteration is .NET
10. The BFF (and the services to follow) target net10.0, pinned via
global.json. Correct the PRD to match.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

.gitignore

@@ -0,0 +1,27 @@
+# .NET build output
+bin/
+obj/
+[Dd]ebug/
+[Rr]elease/
+*.user
+
+# Test results / coverage
+[Tt]est[Rr]esults/
+*.trx
+coverage*.json
+coverage*.xml
+*.coverage
+
+# Rider / VS / VS Code
+.idea/
+.vs/
+.vscode/
+
+# Node / Angular (added as the frontend lands)
+node_modules/
+dist/
+.angular/
+
+# OS
+.DS_Store
+Thumbs.db

docs/PRD.md

@@ -85,7 +85,7 @@ The five flows form the BDD acceptance backbone (Gherkin scenarios in `tests/acc
 
 - **Source control & collaboration:** **Gitea** (Respellion self-hosted) — repository, issues, milestones, labels, projects, releases, container registry, wiki, packages.
 - **CI/CD:** **Gitea Actions** running on Respellion-hosted `act_runner` instances. Workflow files live in `.gitea/workflows/`. Marketplace actions are referenced via absolute URLs (`uses: https://github.com/actions/checkout@v4` or Gitea-hosted equivalents where available) for reproducibility.
-- **Backend:** .NET 9 (LTS at iteration time), C#, minimal APIs for BFF, MediatR for in-process messaging within Domain Service, EF Core for the projection store and domain DB.
+- **Backend:** .NET 10 (LTS at iteration time), C#, minimal APIs for BFF, MediatR for in-process messaging within Domain Service, EF Core for the projection store and domain DB.
 - **Frontend:** Angular (latest LTS) + TypeScript, standalone components + signals, Nx monorepo, NL Design System component library, Angular Testing Library + Playwright.
 - **Workflow:** Flowable (BPMN + DMN) via Docker image; Postgres for engine store.
 - **Identity:** Keycloak with pre-seeded realms.

global.json

@@ -0,0 +1,6 @@
+{
+  "sdk": {
+    "version": "10.0.203",
+    "rollForward": "latestFeature"
+  }
+}

services/bff/Bff.Api/Bff.Api.csproj

@@ -0,0 +1,9 @@
+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+</Project>

services/bff/Bff.Api/Program.cs

@@ -0,0 +1,12 @@
+var builder = WebApplication.CreateBuilder(args);
+builder.Services.AddHealthChecks();
+
+var app = builder.Build();
+
+app.MapGet("/", () => "BFF placeholder");
+app.MapHealthChecks("/health");
+
+app.Run();
+
+// Exposed so the test host (WebApplicationFactory<Program>) can boot the app.
+public partial class Program;

services/bff/Bff.Api/Properties/launchSettings.json

@@ -0,0 +1,23 @@
+{
+  "$schema": "https://json.schemastore.org/launchsettings.json",
+  "profiles": {
+    "http": {
+      "commandName": "Project",
+      "dotnetRunMessages": true,
+      "launchBrowser": true,
+      "applicationUrl": "http://localhost:5249",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    },
+    "https": {
+      "commandName": "Project",
+      "dotnetRunMessages": true,
+      "launchBrowser": true,
+      "applicationUrl": "https://localhost:7106;http://localhost:5249",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    }
+  }
+}

services/bff/Bff.Api/appsettings.Development.json

@@ -0,0 +1,8 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  }
+}

services/bff/Bff.Api/appsettings.json

@@ -0,0 +1,9 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft.AspNetCore": "Warning"
+    }
+  },
+  "AllowedHosts": "*"
+}

services/bff/Bff.Tests/Bff.Tests.csproj

@@ -0,0 +1,26 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="coverlet.collector" Version="6.0.4" />
+    <PackageReference Include="Microsoft.AspNetCore.Mvc.Testing" Version="10.0.8" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
+    <PackageReference Include="xunit" Version="2.9.3" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="3.1.4" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Using Include="Xunit" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Bff.Api\Bff.Api.csproj" />
+  </ItemGroup>
+
+</Project>

services/bff/Bff.Tests/HealthEndpointTests.cs

@@ -0,0 +1,20 @@
+using System.Net;
+using Microsoft.AspNetCore.Mvc.Testing;
+
+namespace Bff.Tests;
+
+public class HealthEndpointTests(WebApplicationFactory<Program> factory)
+    : IClassFixture<WebApplicationFactory<Program>>
+{
+    [Fact]
+    public async Task Health_endpoint_returns_200_and_reports_healthy()
+    {
+        var client = factory.CreateClient();
+
+        var response = await client.GetAsync("/health");
+
+        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
+        var body = await response.Content.ReadAsStringAsync();
+        Assert.Contains("Healthy", body);
+    }
+}

services/bff/Bff.slnx

@@ -0,0 +1,4 @@
+<Solution>
+  <Project Path="Bff.Api/Bff.Api.csproj" />
+  <Project Path="Bff.Tests/Bff.Tests.csproj" />
+</Solution>