📝 CodeRabbit Chat: Implement requested code changes

[coderabbitai]

Code changes was requested by @leynos.

• Adopt pytest-xdist in generate-coverage (#278) #279 (comment)

The following files were modified:

• .github/actions/generate-coverage/scripts/run_python.py

Summary by Sourcery

Enhancements:

• Extract shared Typer option annotations into dedicated type aliases to simplify and standardize the main() function parameters in the coverage runner script.

[sourcery-ai]

Reviewer's Guide

Refactors the Typer CLI parameter definitions in run_python.py into reusable annotated type aliases and updates main() to use them, keeping behavior the same while improving consistency and reuse of option metadata.

File-Level Changes

Change	Details	Files
Refactor Typer CLI parameter definitions into reusable annotated option aliases and update main() signature to use them.	Introduce private annotated aliases for each CLI option (_OutputPathOpt, _LangOpt, _FmtOpt, _GithubOutputOpt, _BaselineFileOpt, _PytestWorkersOpt) that encapsulate the typer.Option configuration. Replace the inline typ.Annotated[...] parameter types in main() with the new aliases, preserving default values and help/envvar metadata. Slightly adjust the docstring parameters section by removing the literal 'Parameters' line while keeping the rest of the documentation intact.	.github/actions/generate-coverage/scripts/run_python.py

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[sourcery-ai]

Hey - I've left some high level feedback:

• The docstring for main now has an underline (----------) without the Parameters header above it, which breaks the NumPy-style section formatting; either restore the Parameters line or adjust the underline accordingly.
• Since you’ve extracted the typer.Option-annotated types into _XxxOpt aliases, consider placing these near the top of the file with any other shared CLI option definitions to make their reuse and intent more discoverable for future commands.

Prompt for AI Agents

Please address the comments from this code review:

## Overall Comments
- The docstring for `main` now has an underline (`----------`) without the `Parameters` header above it, which breaks the NumPy-style section formatting; either restore the `Parameters` line or adjust the underline accordingly.
- Since you’ve extracted the `typer.Option`-annotated types into `_XxxOpt` aliases, consider placing these near the top of the file with any other shared CLI option definitions to make their reuse and intent more discoverable for future commands.

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