Pin Vite to 5173 without an Aspire proxy so AppHost can start.

Co-authored-by: Cursor <cursoragent@cursor.com>

tests/HSchool.AppHost.Tests/ClientEndpointTests.cs

@@ -0,0 +1,22 @@
+using Aspire.Hosting.ApplicationModel;
+
+namespace HSchool.AppHost.Tests;
+
+public class ClientEndpointTests
+{
+    [Fact]
+    public async Task ViteHttpEndpoint_IsProxylessOnPinnedPort()
+    {
+        await using var appHost = await DistributedApplicationTestingBuilder
+            .CreateAsync<Projects.HSchool_AppHost>(TestContext.Current.CancellationToken);
+
+        var client = Assert.Single(appHost.Resources, resource => resource.Name == "client");
+        var http = Assert.Single(
+            client.Annotations.OfType<EndpointAnnotation>(),
+            endpoint => endpoint.UriScheme == "http");
+
+        Assert.False(http.IsProxied);
+        Assert.Equal(5173, http.Port);
+        Assert.Equal(5173, http.TargetPort);
+    }
+}