Use just-built packages in the AI chat template by default

src/ProjectTemplates/Microsoft.Extensions.AI.Templates/Microsoft.Extensions.AI.Templates.csproj

@@ -35,6 +35,7 @@
   </ItemGroup>
 
   <ItemGroup>
+    <!-- Keep the exclude patterns below in sync with those in AichatwebTemplatesTests.cs -->
     <Content
       Include="src\ChatWithCustomData\**\*"
       Exclude="

test/ProjectTemplates/Microsoft.Extensions.AI.Templates.IntegrationTests/AichatwebTemplatesTests.cs

@@ -3,7 +3,6 @@
 
 using System.IO;
 using System.Threading.Tasks;
-using EmptyFiles;
 using Microsoft.Extensions.AI.Templates.IntegrationTests;
 using Microsoft.Extensions.AI.Templates.Tests;
 using Microsoft.Extensions.Logging;
@@ -34,16 +33,28 @@ public async Task BasicTest()
         // Get the template location
         string templateLocation = Path.Combine(TemplateFeedLocation, "Microsoft.Extensions.AI.Templates", "src", "ChatWithCustomData");
 
-        // Treat *.in files as text, see https://github.com/VerifyTests/EmptyFiles#istext
-        FileExtensions.AddTextExtension(".in");
-
         TemplateVerifierOptions options = new TemplateVerifierOptions(templateName: templateShortName)
         {
             TemplatePath = templateLocation,
             SnapshotsDirectory = "Snapshots",
             OutputDirectory = workingDir,
             DoNotPrependCallerMethodNameToScenarioName = true,
             ScenarioName = "Basic",
+
+            // Keep the exclude patterns below in sync with those in Microsoft.Extensions.AI.Templates.csproj.
+            VerificationExcludePatterns = [
+                "*\\bin\\**",
+                "**\\obj\\**",
+                "**\\node_modules\\**",
+                "**\\*.user",
+                "**\\*.in",
+                "**\\*.out.js",
+                "**\\*.generated.css",
+                "**\\package-lock.json",
+                "**\\ingestioncache.db",
+                "**\\NuGet.config",
+                "**\\Directory.Build.targets",
+            ],
         }
         .WithCustomScrubbers(
             ScrubbersDefinition.Empty.AddScrubber((path, content) =>

test/ProjectTemplates/Microsoft.Extensions.AI.Templates.IntegrationTests/Snapshots/aichatweb.Basic.verified/aichatweb/Components/Pages/Chat/Chat.razor

@@ -100,6 +100,7 @@
         await chatInput!.FocusAsync();
     }
 
+    // TODO: This helper is needed until https://github.com/dotnet/extensions/issues/6114 is resolved
     private void AddNonTextContentToConversation(IList<AIContent> contents)
     {
         foreach (var content in contents)