Suppress banner display for aspire --version

src/Aspire.Cli/Program.cs

@@ -443,7 +443,8 @@ public static async Task<int> Main(string[] args)
 
         // Display first run experience if this is the first time the CLI is run on this machine
         var configuration = app.Services.GetRequiredService<IConfiguration>();
-        var noLogo = args.Any(a => a == "--nologo") || configuration.GetBool(CliConfigNames.NoLogo, defaultValue: false);
+        var hasVersionFlag = args.Any(a => a == "--version");
+        var noLogo = args.Any(a => a == "--nologo") || configuration.GetBool(CliConfigNames.NoLogo, defaultValue: false) || hasVersionFlag;
         var showBanner = args.Any(a => a == "--banner");
         await DisplayFirstTimeUseNoticeIfNeededAsync(app.Services, noLogo, showBanner, cts.Token);
 

tests/Aspire.Cli.Tests/CliSmokeTests.cs

@@ -91,4 +91,33 @@ public void DebugOutputWritesToStderr()
 
         outputHelper.WriteLine(result.Process.StandardOutput.ReadToEnd());
     }
+
+    [Fact]
+    public void VersionFlagSuppressesBanner()
+    {
+        using var result = RemoteExecutor.Invoke(async () =>
+        {
+            await using var outputWriter = new StringWriter();
+            var oldOutput = Console.Out;
+            Console.SetOut(outputWriter);
+
+            await Program.Main(["--version"]).DefaultTimeout();
+
+            Console.SetOut(oldOutput);
+            var output = outputWriter.ToString();
+
+            // Write to stdout so it can be captured by the test harness
+            Console.WriteLine($"Output: {output}");
+
+            // The output should only contain the version, not the animated banner
+            // The banner contains "Welcome to the" and ASCII art
+            Assert.DoesNotContain("Welcome to the", output);
+            Assert.DoesNotContain("█████", output);
+
+            // The output should contain a version number
+            Assert.Contains(".", output); // Version should have at least one dot
+        }, options: s_remoteInvokeOptions);
+
+        outputHelper.WriteLine(result.Process.StandardOutput.ReadToEnd());
+    }
 }