Harden CLI rate limit window labels

[ase-openai]

Context

The CLI rate-limit surfaces previously described usage windows as fixed 5-hour and weekly limits. We want the CLI to display whatever supported rate-limit period the server returns instead of assuming a 5-hour/1-week pair. This supports generalized Codex rate-limit periods.

Summary

• Formats CLI rate-limit warning/status labels only for the supported returned window durations: approximate 5h, daily, weekly, monthly, and annual.
• Uses generic fallback copy when a primary or secondary window has no duration, so missing secondary protection data does not produce stale weekly copy.
• Uses generic fallback copy for unsupported window durations instead of adding arbitrary hourly, multi-day, multi-week, or multi-year labels.
• Updates status line and terminal title setup descriptions/previews to talk about primary/secondary usage limits rather than fixed 5h/weekly limits.
• Adds rendered insta snapshot coverage for the updated rate-limit status surfaces and /status fallback labels.

Tests

Tested locally:

• one primary window
• one secondary window
• primary and secondary window

[github-actions]

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[chatgpt-codex-connector]

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[ase-openai]

I have read the CLA Document and I hereby sign the CLA

[ase-openai]

@codex review

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[ase-openai]

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[ase-openai]

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Codex Review: Didn't find any major issues. 🎉

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[ase-openai]

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Reviewed commit: 4ea06e18bb

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Codex has been enabled to automatically review pull requests in this repo. Reviews are triggered when you

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[fcoury-oai]

I exercised the changes both for a ChatGPT authenticated user and an internal user, for different usages (regular and Spark for instance) and it worked as expected.

Code looks good, approved. 👍