Add tests and implement StubBearer authentication for Signer endpoints

- Created SignerEndpointsTests to validate the SignDsse and VerifyReferrers endpoints.
- Implemented StubBearerAuthenticationDefaults and StubBearerAuthenticationHandler for token-based authentication.
- Developed ConcelierExporterClient for managing Trivy DB settings and export operations.
- Added TrivyDbSettingsPageComponent for UI interactions with Trivy DB settings, including form handling and export triggering.
- Implemented styles and HTML structure for Trivy DB settings page.
- Created NotifySmokeCheck tool for validating Redis event streams and Notify deliveries.

src/StellaOps.Authority/StellaOps.Authority.Plugin.Standard/Bootstrap/StandardPluginBootstrapper.cs

@@ -1,5 +1,6 @@
 using System.Threading;
 using System.Threading.Tasks;
+using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Hosting;
 using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.Options;
@@ -10,24 +11,25 @@ namespace StellaOps.Authority.Plugin.Standard.Bootstrap;
 internal sealed class StandardPluginBootstrapper : IHostedService
 {
     private readonly string pluginName;
-    private readonly IOptionsMonitor<StandardPluginOptions> optionsMonitor;
-    private readonly StandardUserCredentialStore credentialStore;
+    private readonly IServiceScopeFactory scopeFactory;
     private readonly ILogger<StandardPluginBootstrapper> logger;
 
     public StandardPluginBootstrapper(
         string pluginName,
-        IOptionsMonitor<StandardPluginOptions> optionsMonitor,
-        StandardUserCredentialStore credentialStore,
+        IServiceScopeFactory scopeFactory,
         ILogger<StandardPluginBootstrapper> logger)
     {
         this.pluginName = pluginName;
-        this.optionsMonitor = optionsMonitor;
-        this.credentialStore = credentialStore;
+        this.scopeFactory = scopeFactory;
         this.logger = logger;
     }
 
     public async Task StartAsync(CancellationToken cancellationToken)
     {
+        using var scope = scopeFactory.CreateScope();
+        var optionsMonitor = scope.ServiceProvider.GetRequiredService<IOptionsMonitor<StandardPluginOptions>>();
+        var credentialStore = scope.ServiceProvider.GetRequiredService<StandardUserCredentialStore>();
+
         var options = optionsMonitor.Get(pluginName);
         if (options.BootstrapUser is null || !options.BootstrapUser.IsConfigured)
         {