[Bug]: An error occurs in the coverage GitHub Actions during the download-artifact step

[snuffkin]

Describe the bug

An error occurs in the coverage GitHub Actions during the download-artifact step.

To Reproduce

In python-ci.yaml, the test job runs make test-xxx targeting common, user, and provider, and uploads the .coverage file using upload-artifact.
In the coverage job, the following error occurs at the download-artifact step:

Run actions/download-artifact@v4
Downloading single artifact
Error: Unable to download artifact(s): Artifact not found for name: .coverage-common
        Please ensure that your artifact is not expired and the artifact was uploaded using a compatible version of toolkit/upload-artifact.
        For more information, visit the GitHub Artifacts FAQ: https://github.com/actions/toolkit/blob/main/packages/artifact/docs/faq.md

When running make test-xxx within the test job, .coverage is renamed to .coverage-xxx before uploading. However, this step may not be working as expected.

One of the Actions where the error occurred:
https://github.com/oqtopus-team/oqtopus-cloud/actions/runs/13002889819/job/36264753004

Expected behavior

No response

Screenshots

No response

Environment

None

Additional context

No response

[dvlpwork]

(readonly)
Maybe PR #66 causes.

I will change the artifact references from ./ to ./backend/.

[dvlpwork]

Issue with not finding .coverage-common: Explicitly set the include-hidden-files option to true.
Issue with not finding pyproject.toml: Add a checkout step for the repository.