Improve formatting of mcp-registry list output (#706)

* Improve formatting of mcp-registry list output

* Run spotless

Author: rhernandez35

mcp/mcp-cli-api/src/main/java/software/amazon/smithy/java/mcp/cli/SmithyMcpCommand.java

@@ -8,6 +8,7 @@
 import static software.amazon.smithy.java.mcp.cli.ConfigUtils.loadOrCreateConfig;
 
 import java.util.concurrent.Callable;
+import picocli.CommandLine;
 import software.amazon.smithy.java.logging.InternalLogger;
 import software.amazon.smithy.java.mcp.cli.model.Config;
 
@@ -20,6 +21,9 @@
  */
 public abstract class SmithyMcpCommand implements Callable<Integer> {
 
+    @CommandLine.Spec
+    CommandLine.Model.CommandSpec commandSpec;
+
     InternalLogger LOG = InternalLogger.getLogger(SmithyMcpCommand.class);
 
     @Override
@@ -50,4 +54,8 @@ public final Integer call() throws Exception {
     protected String registryToUse(Config config) {
         return config.getDefaultRegistry();
     }
+  
+    protected final CommandLine.Model.CommandSpec commandSpec() {
+        return commandSpec;
+    }
 }

mcp/mcp-cli/src/main/java/software/amazon/smithy/java/mcp/cli/commands/ListBundles.java

@@ -25,13 +25,15 @@ protected void execute(ExecutionContext context) {
         registry
                 .listMcpBundles()
                 .forEach(bundle -> {
-                    StringBuilder builder = new StringBuilder(bundle.getName());
-                    if (bundle.getDescription() != null) {
-                        builder.append("\n").append("Description: ").append(bundle.getDescription());
-                    } else {
-                        builder.append("\n").append("MCP for ").append(bundle.getName());
+                    System.out.println(commandSpec().commandLine()
+                            .getColorScheme()
+                            .string("@|bold " + bundle.getName() + "|@"));
+                    var description = bundle.getDescription();
+                    if (description == null) {
+                        description = "MCP server for " + bundle.getName();
                     }
-                    System.out.println(builder);
+                    System.out.print("\tDescription: ");
+                    System.out.println(description);
                 });
 
     }