fix: re-enable coverage report upload to Codecov in CI workflow

[snobbee]

Relates to:

Continuous Integration workflow improvements

Risks

Low - Changes to CI workflow configuration only. Main risk would be potential CI pipeline failures if any configuration is incorrect.

Background

What does this PR do?

Updates the GitHub Actions CI workflow configuration with the following changes:

• Adds code coverage reporting to Codecov

What kind of change is this?

Improvements (misc. changes to existing features)

• Enhances the existing CI pipeline with better package management and test coverage reporting

Documentation changes needed?

My changes do not require a change to the project documentation.

Testing

Where should a reviewer start?

1. Review the .github/workflows/ci.yaml file
2. Check the workflow runs on both push to main and pull requests
3. Verify all job steps are properly configured

Detailed testing steps

1. Create a test PR to verify the workflow triggers correctly
2. Ensure all steps complete successfully:
   • PNPM installation
   • Dependencies installation
   • Prettier checks
   • Linting
   • Test environment setup
   • Test execution
   • Package building
   • Code coverage reporting
3. Verify Codecov integration is working by checking coverage reports

The automated CI workflow will validate all changes.

Deploy Notes

No special deployment needed - changes only affect CI pipeline configuration.

[monilpat]

LGTM!