• https://developers.openai.com/api/docs/guides/tools-programmatic-tool-calling
• https://developers.openai.com/blog/codex-as-a-platform
• https://developers.openai.com/blog/custom-code-review-rules-for-codex
• https://developers.openai.com/blog/eval-skills/
• https://developers.openai.com/blog/skills-agents-sdk
• https://developers.openai.com/blog/skills-shell-tips
• https://developers.openai.com/codex/skills