Add model availability NUX tooltips

[aibrahim-oai]

• override startup tooltips with model availability NUX and persist per-model show counts in config
• stop showing each model after four exposures and fall back to normal tooltips

[aibrahim-oai]

@codex review

[chatgpt-codex-connector]

💡 Codex Review

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Reviewed commit: 6bd76b27aa

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[aibrahim-oai]

@codex review

[chatgpt-codex-connector]

💡 Codex Review

Here are some automated review suggestions for this pull request.

Reviewed commit: 4d4897c47b

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".

If Codex has suggestions, it will comment; otherwise it will react with 👍.

Codex can also answer questions or update the PR. Try commenting "@codex address that feedback".

[chatgpt-codex-connector]

Avoid rewriting the full NUX map from stale state

model_availability_nux_count_edits clears tui.model_availability_nux and rewrites every key. Combined with startup code that builds updates from an in-memory snapshot, concurrent Codex launches can clobber each other's increments (lost update). This breaks the 4-exposure cap by regressing or dropping per-model counters.

Useful? React with 👍 / 👎.

[sayan-oai]

integration tests?

[aibrahim-oai]

@codex can you add e2e integration test?

[chatgpt-codex-connector]

Summary

• Added a new TUI integration test module that performs an end-to-end codex exec + codex resume --last flow, seeds a model availability NUX count, and asserts the count is unchanged after resume startup (regression coverage for the resume path). codex-rs/tui/tests/suite/model_availability_nux.rsL12-L190
• Registered the new integration test module in the TUI test suite aggregator so it runs with tests/all.rs. codex-rs/tui/tests/suite/mod.rsL1-L6

Testing

• ✅ just fmt
• ✅ cargo test -p codex-tui --test all suite::model_availability_nux::resume_startup_does_not_consume_model_availability_nux_count -- --exact
• ✅ cargo test -p codex-tui

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