Summary

Fixed Codecov unknown coverage and test analytics configuration by separating responsibilities between coverage and test jobs, matching the working configuration from infra-metrics-insight-renderer.

Changes

Coverage Job

• Removed id-token: write permission (not needed with token-based auth)
• Removed codecov/test-results-action (moved to test job)
• Removed JUnit XML generation step (handled by test job)
• Simplified summary output

Test Job

• Added cargo-nextest installation for MSRV version
• Split test execution: nextest with ci profile for MSRV, regular cargo test for stable
• Added codecov/test-results-action for MSRV test results upload
• Removed redundant JSON test report generation

cargo-test Action

• Added nextest-profile parameter for conditional nextest execution
• Maintains backward compatibility with regular cargo test

Technical Details

JUnit XML Generation:

• Generated via nextest ci profile: target/nextest/ci/junit.xml
• Auto-discovered by codecov/test-results-action

Authentication:

• Token-based only: token: ${{ secrets.CODECOV_TOKEN }}
• No OIDC conflicts

Benefits

• Coverage and test analytics properly separated
• No authentication conflicts
• Cleaner job responsibilities
• Consistent with working project architecture

Test Plan

• All 236 tests pass locally with nextest ci profile
• JUnit XML generated successfully (43KB)
• YAML validation passed
• Pre-commit hooks passed

Closes #213