feat(spawn): support inherited stdio

test/test.spawn.ts

@@ -80,6 +80,20 @@ tap.test('execSpawn should properly escape arguments', async () => {
   expect(result.stdout).toContain('$HOME && ls');
 });
 
+tap.test('execSpawn should support inherited stdio for interactive CLIs', async () => {
+  const testSmartshell = new smartshell.Smartshell({
+    executor: 'bash',
+    sourceFilePaths: [],
+  });
+
+  const result = await testSmartshell.execSpawn('node', ['-e', 'console.log("inherited stdio works")'], {
+    stdio: 'inherit',
+  });
+  expect(result.exitCode).toEqual(0);
+  expect(result.stdout).toEqual('');
+  expect(result.stderr).toEqual('');
+});
+
 tap.test('execSpawn streaming should work', async () => {
   const testSmartshell = new smartshell.Smartshell({
     executor: 'bash',