diff --git a/src/Application/ApplicationServiceExtensions.cs b/src/Application/ApplicationServiceExtensions.cs
index a794bd1..e073a8a 100644
--- a/src/Application/ApplicationServiceExtensions.cs
+++ b/src/Application/ApplicationServiceExtensions.cs
@@ -35,7 +35,9 @@ public static IServiceCollection AddApplication(this IServiceCollection services
         // Settings
         services.AddScoped<GetSettingsHandler>();
         services.AddScoped<SaveSettingsHandler>();
-        services.AddScoped<TestArrConnectionHandler>();
+        // NB: TestArrConnectionHandler is registered by the Web host only — it needs IArrClient, which
+        // only a host that calls AddArrClient() provides. Registering it here made every host fail to
+        // start under DI validate-on-build (i.e. in Development).
 
         // Auth (#48) — SetupToken is a singleton so it survives for the process lifetime and is
         // logged once at startup; the handlers are scoped like every other use-case.
diff --git a/src/Presentation/Web/Program.cs b/src/Presentation/Web/Program.cs
index 32a75ce..4bfc410 100644
--- a/src/Presentation/Web/Program.cs
+++ b/src/Presentation/Web/Program.cs
@@ -1,6 +1,7 @@
 using System.Threading.RateLimiting;
 using Krautwatch.Application;
 using Krautwatch.Application.Auth;
+using Krautwatch.Application.Settings;
 using Krautwatch.Infrastructure;
 using Krautwatch.Web;
 using Krautwatch.Web.Components;
@@ -13,6 +14,14 @@
 var builder = WebApplication.CreateBuilder(args);
 
 builder.AddServiceDefaults();
+
+// Load the static-web-assets manifest explicitly. The framework only does this in Development, and none of
+// our hosts run as Development (there are no launch profiles, and Aspire does not set one), so
+// _framework/blazor.web.js returned a 500 and compressed assets returned an empty 200 — the UI loaded
+// unstyled and completely inert, with no error anywhere obvious. No-op when the manifest is absent, i.e. in
+// a published app where the assets are copied into wwwroot. See #63.
+builder.WebHost.UseStaticWebAssets();
+
 builder.Services.AddRazorComponents().AddInteractiveServerComponents();
 
 var connectionString = builder.Configuration.GetConnectionString("krautwatch")
@@ -25,6 +34,11 @@
 });
 builder.Services.AddApplication();
 
+// Outbound Sonarr/Radarr client + the Action that uses it. Paired deliberately: the handler cannot be
+// constructed without the client, so whichever host wants one must wire both (#4).
+builder.Services.AddArrClient();
+builder.Services.AddScoped<TestArrConnectionHandler>();
+
 // ──────────────────────────────────────────────────────────────
 // Authentication (#48)
 //