Add determinism tests for verdict artifact generation and update SHA256 sums script

- Implemented comprehensive tests for verdict artifact generation to ensure deterministic outputs across various scenarios, including identical inputs, parallel execution, and change ordering.
- Created helper methods for generating sample verdict inputs and computing canonical hashes.
- Added tests to validate the stability of canonical hashes, proof spine ordering, and summary statistics.
- Introduced a new PowerShell script to update SHA256 sums for files, ensuring accurate hash generation and file integrity checks.

src/Scanner/StellaOps.Scanner.WebService/Program.cs

@@ -46,6 +46,7 @@ using StellaOps.Scanner.WebService.Replay;
 using StellaOps.Scanner.WebService.Middleware;
 using StellaOps.Scanner.Storage;
 using StellaOps.Scanner.Storage.Extensions;
+using StellaOps.Router.AspNet;
 
 var builder = WebApplication.CreateBuilder(args);
 
@@ -72,6 +73,12 @@ var bootstrapOptions = builder.Configuration.BindOptions<ScannerWebServiceOption
 builder.Services.AddStellaOpsCrypto(bootstrapOptions.Crypto);
 builder.Services.AddControllers();
 
+// Stella Router integration - enables ASP.NET endpoints to be registered with the Router
+builder.Services.TryAddStellaRouter(
+    serviceName: "scanner",
+    version: typeof(Program).Assembly.GetName().Version?.ToString() ?? "1.0.0",
+    routerOptions: bootstrapOptions.Router);
+
 builder.Services.AddOptions<ScannerWebServiceOptions>()
     .Bind(builder.Configuration.GetSection(ScannerWebServiceOptions.SectionName))
     .PostConfigure(options =>
@@ -504,6 +511,9 @@ app.UseExceptionHandler(errorApp =>
 app.UseAuthentication();
 app.UseAuthorization();
 
+// Stella Router integration - enables request dispatch from Router to ASP.NET endpoints
+app.TryUseStellaRouter(resolvedOptions.Router);
+
 // Idempotency middleware (Sprint: SPRINT_3500_0002_0003)
 app.UseIdempotency();
 
@@ -546,6 +556,10 @@ apiGroup.MapRuntimeEndpoints(resolvedOptions.Api.RuntimeSegment);
 
 app.MapControllers();
 app.MapOpenApiIfAvailable();
+
+// Refresh Router endpoint cache after all endpoints are registered
+app.TryRefreshStellaRouterEndpoints(resolvedOptions.Router);
+
 await app.RunAsync().ConfigureAwait(false);
 
 public partial class Program;