fix(cli): preserve primitive success results in JSON output

Check for an object before inspecting screenshot fields so primitive success results remain printable.

Related: https://github.com/stablyai/orca/pull/14735

Co-authored-by: Neil <neil@stably.ai>
Co-authored-by: VXNCXNX <VXNCXNX@users.noreply.github.com>

src/cli/computer-format.test.ts

@@ -1,6 +1,57 @@
-import { describe, expect, it } from 'vitest'
+import { describe, expect, it, vi } from 'vitest'
 import type { ComputerActionResult } from '../shared/runtime-types'
-import { formatComputerAction } from './computer-format'
+import { formatComputerAction, prepareComputerCliJsonResult } from './computer-format'
+import { printResult } from './format'
+
+describe('prepareComputerCliJsonResult', () => {
+  it.each([
+    'Physical size: 1440x3200\n',
+    '33',
+    'screenshotStatus',
+    '',
+    42,
+    -1,
+    0,
+    true,
+    false,
+    null
+  ])('preserves successful primitive JSON output for %j', (result) => {
+    const response = {
+      id: 'req-primitive',
+      ok: true as const,
+      result,
+      _meta: { runtimeId: 'runtime-1' }
+    }
+    const formatter = vi.fn(() => 'unused')
+    const logSpy = vi.spyOn(console, 'log').mockImplementation(() => undefined)
+
+    try {
+      expect(prepareComputerCliJsonResult(response)).toBe(response)
+      printResult(response, true, formatter)
+      expect(logSpy).toHaveBeenCalledOnce()
+      expect(logSpy).toHaveBeenCalledWith(JSON.stringify(response, null, 2))
+      expect(formatter).not.toHaveBeenCalled()
+    } finally {
+      logSpy.mockRestore()
+    }
+  })
+
+  it.each([
+    { result: {} },
+    { result: [] },
+    { result: { screenshotStatus: {} } },
+    { result: { screenshot: { data: 'cG5n', format: 'png' } } }
+  ])('preserves object results without a computer screenshot: %j', ({ result }) => {
+    const response = {
+      id: 'req-object',
+      ok: true as const,
+      result,
+      _meta: { runtimeId: 'runtime-1' }
+    }
+
+    expect(prepareComputerCliJsonResult(response)).toBe(response)
+  })
+})
 
 describe('formatComputerAction', () => {
   it('does not treat legacy action results without metadata as completed', () => {

src/cli/computer-format.ts

@@ -63,7 +63,11 @@ export function prepareComputerCliJsonResult<TResult>(
       screenshotStatus?: unknown
     }
   }
-  if (!record.result || !('screenshotStatus' in record.result)) {
+  if (
+    !record.result ||
+    typeof record.result !== 'object' ||
+    !('screenshotStatus' in record.result)
+  ) {
     return response
   }
   const screenshot = record.result?.screenshot