[codex] Vendor MS MARCO evaluators and fix Python warnings

[lintool]

Summary

• vendor the MS MARCO passage and document evaluation scripts in Pyserini
• run the vendored evaluators with the active Python interpreter instead of downloading them at runtime
• remove obsolete evaluation-script download metadata and utilities
• fix Python 3.12 invalid escape sequence and unclosed file warnings
• modernize the MS MARCO run converter to use an f-string

Validation

• mamba run -n pyserini-dev3 python -Werror::SyntaxWarning -m compileall -f -q pyserini
• mamba run -n pyserini-dev3 python -m unittest tests.base.test_trectools tests.base.test_load_qrels
• mamba run -n pyserini-dev3 python -Werror::SyntaxWarning -m pyserini.eval.msmarco_passage_eval
• mamba run -n pyserini-dev3 python -Werror::SyntaxWarning -m pyserini.eval.msmarco_doc_eval
• git diff --check

[lintool]

Yes, Codex uses "vendor" as a verb...

[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 2026-08-29T20:18:44.182090Z	772bcc6	Draft marked ready

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