Three bugs in test_sync_success_caches_and_returns_models:
1. Mock data lacked taskType=imageInference so normalize_models() filtered
everything out → sync() returned false (empty result).
2. wp_remote_retrieve_response_code and wp_remote_retrieve_body not mocked
→ Brain\Monkey MissingFunctionExpectations.
3. is_wp_error not mocked.
4. get_option/update_option used separate static stores so update_option
write was invisible to the subsequent get_option in get_models().
d9317ff567