Update keywords and add check workflow

[dveeden]

First-time contributors' checklist

• [x] I've signed the Contributor License Agreement, which is required for the repository owners to accept my contribution.

What is changed, added or deleted? (Required)

Update keyword checking script and add it to a workflow.

Updates to keywords from:

• https://github.com/pingcap/tidb/pull/61159
• https://github.com/pingcap/tidb/pull/64772
• https://github.com/pingcap/tidb/pull/59820
• https://github.com/pingcap/tidb/pull/61299

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• [x] master (the latest development version)
• [ ] v9.0 (TiDB 9.0 versions)
• [ ] v8.5 (TiDB 8.5 versions)
• [ ] v8.1 (TiDB 8.1 versions)
• [ ] v7.5 (TiDB 7.5 versions)
• [ ] v7.1 (TiDB 7.1 versions)
• [ ] v6.5 (TiDB 6.5 versions)
• [ ] v6.1 (TiDB 6.1 versions)
• [ ] v5.4 (TiDB 5.4 versions)

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• [ ] Delete files
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• [ ] Need modification after applied to another branch
• [ ] Might cause conflicts after applied to another branch

[ti-chi-bot[bot]]

Skipping CI for Draft Pull Request. If you want CI signal for your change, please convert it to an actual PR. You can still manually trigger a test run with /test all

[ti-chi-bot[bot]]

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[gemini-code-assist[bot]]

Summary of Changes

Hello @dveeden, I'm Gemini Code Assist[^1]! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request refactors the existing keyword checking mechanism by replacing a shell script with a more robust and flexible Python script. The primary purpose is to improve the maintainability and adaptability of the keyword validation process, especially by allowing the parser.y definition to be fetched remotely, which can be beneficial for CI/CD pipelines or environments where local file paths might vary.

Highlights

• Script Renamed and Rewritten: The keyword checking script has been renamed from check-keywords.sh to check-keywords.py and completely rewritten in Python.
• Flexible Parser Source: The new Python script introduces the ability to specify the parser.y file either from a local path or by downloading it directly from a URL, enhancing flexibility for different environments.
• Command-Line Arguments: Command-line arguments (--parser_file, --parser_url, --download_from_url) have been added to control the source and method of obtaining the parser.y file.

Ignored Files

• Ignored by pattern: .github/workflows/** (1)
  • .github/workflows/keywords.yaml

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[ti-chi-bot[bot]]

[LGTM Timeline notifier]

Timeline:

• 2025-12-17 07:09:43.632823557 +0000 UTC m=+1629728.446601129: :ballot_box_with_check: agreed by breezewish.