Merge branch 'bug/4-wwwroot-not-found'

src/HSchool.Server/ClientStaticFiles.cs

@@ -0,0 +1,10 @@
+namespace HSchool.Server;
+
+/// <summary>
+/// Published images copy the Vite build into wwwroot. Local Aspire has no such folder.
+/// </summary>
+internal static class ClientStaticFiles
+{
+    public static bool CanServe(string? webRootPath) =>
+        !string.IsNullOrEmpty(webRootPath) && Directory.Exists(webRootPath);
+}

src/HSchool.Server/Program.cs

@@ -159,7 +159,11 @@ app.Map("/ws/game", async (HttpContext context, GameSocketHandler handler, Sessi
 app.MapDefaultEndpoints();
 
 // In a published container the built client lands in wwwroot next to the server.
-app.UseFileServer();
+// Local Aspire has no such folder — Vite serves the UI, and UseFileServer would warn.
+if (ClientStaticFiles.CanServe(app.Environment.WebRootPath))
+{
+    app.UseFileServer();
+}
 
 app.Run();