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/Concelier/StellaOps.Concelier.WebService/Program.cs

@@ -66,6 +66,7 @@ using HttpResults = Microsoft.AspNetCore.Http.Results;
 using StellaOps.Concelier.Storage.Advisories;
 using StellaOps.Concelier.Storage.Aliases;
 using StellaOps.Provenance;
+using StellaOps.Router.AspNet;
 
 namespace StellaOps.Concelier.WebService
 {
@@ -191,6 +192,12 @@ builder.Services.AddSingleton<IOptions<ConcelierOptions>>(_ => Microsoft.Extensi
 
 builder.Services.AddStellaOpsCrypto(concelierOptions.Crypto);
 
+// Stella Router integration
+builder.Services.TryAddStellaRouter(
+    serviceName: "concelier",
+    version: typeof(Program).Assembly.GetName().Version?.ToString() ?? "1.0.0",
+    routerOptions: concelierOptions.Router);
+
 builder.ConfigureConcelierTelemetry(concelierOptions);
 
 builder.Services.TryAddSingleton<TimeProvider>(_ => TimeProvider.System);
@@ -496,6 +503,9 @@ if (authorityConfigured)
     app.UseAuthorization();
 }
 
+// Stella Router integration
+app.TryUseStellaRouter(concelierOptions.Router);
+
 // Deprecation headers for legacy endpoints (CONCELIER-WEB-OAS-63-001)
 app.UseDeprecationHeaders();
 
@@ -3916,6 +3926,9 @@ app.MapGet("/v1/signals/symbols/exists/{advisoryId}", async (
     return HttpResults.Ok(new SignalsSymbolExistsResponse(Exists: exists, AdvisoryId: advisoryId.Trim()));
 }).WithName("CheckAffectedSymbolsExist");
 
+// Refresh Router endpoint cache after all endpoints are registered
+app.TryRefreshStellaRouterEndpoints(concelierOptions.Router);
+
 await app.RunAsync();
     }