Core workflow completed in six sequential steps (seven API calls) with zero retries

Both models created an issue, branch, file, pull request, review comment, and merge in six workflow steps (seven REST API calls — branch creation required two). Each response included the identifiers needed for the next step — the issue number was referenced in the PR body ("Closes #1"), the main branch SHA was passed to the refs endpoint, and the PR number was used for the review and merge calls. The merge auto-closed the linked issue. Neither model made a wrong API call or needed to retry any step. The URL structure (/repos/{owner}/{repo}/{resource}) was predictable, and the JSON payloads required no undocumented fields.