style(clippy): fix clippy warnings

[hongqitai]

Summary

• run cargo clippy --fix fix clippys
• some test failed, but it wasn't due to the changes made this time.

Testing

• [ x ] cargo fmt --all -- --check
• [ x ] cargo clippy --workspace --all-targets --all-features
• [ x ] cargo test --workspace --all-features

Checklist

• [ x ] Updated docs or comments as needed
• [ x ] Added or updated tests where relevant
• [ x ] Verified TUI behavior manually if UI changes
• [ x ] Harvested/co-authored credit uses a GitHub numeric noreply address

[greptile-apps]

Your free trial has ended. If you'd like to continue receiving code reviews, you can add a payment method here.

[gemini-code-assist]

Code Review

This pull request refactors string formatting across the codebase to use Rust's inline format arguments, simplifies option mapping in retry_status.rs using is_none_or, and replaces a runtime assertion in ui/tests.rs with a comment in ui.rs. The reviewer suggests enforcing the MAX_ENGINE_EVENTS_PER_DRAIN limit using a compile-time assertion rather than just a comment.

Important

The consumer version of Gemini Code Assist on GitHub is being sunset. Starting June 18, 2026, new organization installations will be blocked, and all code review activity will officially cease on July 17, 2026.
For more details on the timeline and next steps, please review the Help Documentation.

[greptile-apps]

Your free trial has ended. If you'd like to continue receiving code reviews, you can add a payment method here.

[greptile-apps]

Your free trial has ended. If you'd like to continue receiving code reviews, you can add a payment method here.

[Hmbown]

Thanks @hongqitai — this was a useful cleanup for the v0.8.64 branch. I carried the non-benchmark slice locally as b292cd13b, preserving your authorship from the PR.

I intentionally kept the benchmark-harness changes out of the public CodeWhale release repo and handled that material separately, so this branch gets the Clippy cleanup without growing benchmark surface here.

Local verification:

• cargo fmt --all -- --check
• cargo test -p codewhale-tui --bin codewhale-tui --locked six_worker_progress_storm_keeps_input_render_and_cancel_live
• cargo test -p codewhale-tui --bin codewhale-tui --locked tui::tab
• cargo test -p codewhale-tui --bin codewhale-tui --locked ghost_text_renders_when_suggestion_set_and_input_empty
• ./scripts/release/check-versions.sh
• python3 scripts/check-coauthor-trailers.py --author-map .github/AUTHOR_MAP --range origin/main..HEAD --check-authors

I am leaving this PR open until the integration branch is pushed/landed so the visible GitHub state stays honest.