Replace mypy by pyright

[Kludex]

No description provided.

[github-actions]

Docs preview:

[codspeed-hq]

Merging this PR will not alter performance

✅ 15 untouched benchmarks
⏩ 7 skipped benchmarks¹

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_{Comparing replace-mypy-by-pyright (331568f) with main (26dd31e)}

Footnotes

1. 7 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Initialize retry trace kwargs before the try

With the new pyright gate enabled, this branch-local kwargs declaration still makes the check fail: pyright --help defines the positional arguments as files..., and running pyright src/httpcore2/httpcore2/_async/connection.py reports "kwargs" is possibly unbound at the retry trace on line 148. Because scripts/check now runs pyright over src/httpcore2, the replacement type-check step exits non-zero before the rest of CI can pass; hoist/initialize the retry trace kwargs (or avoid reusing the branch-local variable in the except).

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[cubic-dev-ai]

2 issues found across 35 files

<sub>Reply with feedback, questions, or to request a fix.

Re-trigger cubic</sub>