[0.153 hotfix] Show Astra in bundled model picker

[rhan-oai]

The 0.153 bundled catalog hides gpt-6-astra, omitting it from catalog-backed model selection. Change its visibility to list and update the existing picker snapshot. Its existing priority makes Astra the bundled default when no model is explicitly configured.

Validation

• just test -p codex-models-manager --lib: 48 passed.
• just fmt and git diff --check passed.
• Parsed the release catalog and verified its only semantic change is Astra visibility from hide to list.
• Reviewed the picker snapshot against the release-line rendering sources; TUI tests were not rerun on this release branch.

[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-09-04T22:16:57.003945Z	a4ee89d	PR opened

ℹ️ About Codex in GitHub

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review" or "@codex security review".

Codex reacts with 👀 while any review is running, comments if it has suggestions, and reacts with 👍 once all reviews finish with no findings.