fix: add missing mock for client edit test failing in CI

- Add GlobalConfigManager mock to test_client_edit_command_client_not_installed
- Ensures test has servers available to avoid early exit with code 1
- Fixes CI test failure where no servers were available

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: niechen

tests/test_client.py

@@ -294,6 +294,11 @@ def test_client_edit_command_client_not_installed(monkeypatch):
     monkeypatch.setattr(ClientRegistry, "get_client_manager", Mock(return_value=mock_client_manager))
     monkeypatch.setattr(ClientRegistry, "get_client_info", Mock(return_value={"name": "Windsurf"}))
 
+    # Mock GlobalConfigManager - need servers to avoid early exit
+    mock_global_config = Mock()
+    mock_global_config.list_servers.return_value = {"test-server": Mock(description="Test server")}
+    monkeypatch.setattr("mcpm.commands.client.global_config_manager", mock_global_config)
+
     # Run the command
     runner = CliRunner()
     result = runner.invoke(edit_client, ["windsurf"])