chore(test): enable branch coverage in pyproject.toml and simplify te…

[flitzpiepe93]

Enable Branch Coverage and Simplify Test Configuration

✨ Summary

This MR enables branch coverage in the coverage.py configuration and simplifies the test execution setup.

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✅ Changes

• Added branch = true under [tool.coverage.run] in pyproject.toml to enable branch coverage by default
• Moved common pytest arguments into [tool.pytest.ini_options] via addopts
• Cleaned up GitHub Actions job by removing redundant CLI parameters (--cov-branch, etc.)

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🔍 Why?

• Makes branch coverage consistent across local runs, CI, and IDEs
• Reduces duplication and simplifies the test job definition
• Prepares the project for better integration with reporting tools (e.g. Codecov, Sonar)

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🧪 How to test

Run the following command locally (or check the CI):

uv run pytest

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

📢 Thoughts on this report? Let us know!