Migrate console to coreEvents.emitFeedback or debugLogger (#15219)

packages/a2a-server/src/commands/command-registry.ts

@@ -4,6 +4,7 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
+import { debugLogger } from '@google/gemini-cli-core';
 import { ExtensionsCommand } from './extensions.js';
 import { InitCommand } from './init.js';
 import { RestoreCommand } from './restore.js';
@@ -20,7 +21,7 @@ class CommandRegistry {
 
   register(command: Command) {
     if (this.commands.has(command.name)) {
-      console.warn(`Command ${command.name} already registered. Skipping.`);
+      debugLogger.warn(`Command ${command.name} already registered. Skipping.`);
       return;
     }