Daily Test Coverage Improver - Fix Vitest 4 Compatibility

[github-actions]

Overview

Fixes the coverage steps action to work with Vitest 4 by removing the unsupported --coverageDirectory command-line flag.

Problem

The coverage steps in .github/actions/daily-test-improver/coverage-steps/action.yml were failing with:

CACError: Unknown option `--coverageDirectory`

Vitest 4 removed support for this command-line flag. The coverage directory is already configured in vitest.config.ts files via the coverage.reportsDirectory option.

Solution

Removed the --coverageDirectory=coverage flag from both test commands:

• React tests: pnpm run test --coverage --coverageDirectory=coverage → pnpm run test --coverage
• backend.ai-ui tests: Same change

Validation

Manually tested both test suites:

React Project:

• Test Files: 42 passed (42)
• Tests: 895 passed (895)
• Coverage: 5.49% statements, 3.7% branch, 5.36% functions
• Coverage reports generated successfully at react/coverage/

backend.ai-ui Project:

• Test Files: 16 passed | 1 skipped (17)
• Tests: 348 passed | 1 skipped (349)
• Coverage: 9.48% statements, 7.88% branch, 12.38% functions
• Coverage reports generated successfully at packages/backend.ai-ui/coverage/

What Happens Next

Once this PR is merged, the Daily Test Coverage Improver workflow will be able to proceed to Phase 3, where it will systematically improve test coverage across the repository.

AI generated by Daily Test Coverage Improver

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