Make checkpoints configurable in settings.json (#1251)

packages/cli/src/ui/hooks/useGeminiStream.test.tsx

@@ -280,7 +280,7 @@ describe('useGeminiStream', () => {
         () => ({ getToolSchemaList: vi.fn(() => []) }) as any,
       ),
       getProjectRoot: vi.fn(() => '/test/dir'),
-      getCheckpointEnabled: vi.fn(() => false),
+      getCheckpointingEnabled: vi.fn(() => false),
       getGeminiClient: mockGetGeminiClient,
       addHistory: vi.fn(),
     } as unknown as Config;