## What changed
- Make targeted official documentation search and page retrieval the default first step, while retaining a manual-first path for broad Codex orientation and setup questions.
- Split Codex self-knowledge, documentation integration diagnostics, model migration, model selection, and general official documentation guidance into focused references, with at most one primary route loaded per request.
- Preserve explicitly requested model targets, reserve the latest-model resolver for dynamic migrations, and treat bundled model guidance as a disclosed fallback to current official sources.
- Expand the skill metadata and interface description to cover Codex self-knowledge, ChatGPT Work, and OpenAI model and API workflows.
GitOrigin-RevId: 22aba3fc6f58dac8a6cef637504b1fe6d2aaf0d0
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