forked from mirror/crumbs-original
Add V8 coverage for unit tests via @vitest/coverage-v8 and Istanbul instrumentation for E2E tests via vite-plugin-istanbul. Coverage data is collected from browser pages after each Playwright test and merged with nyc. CI uploads both coverage reports as GitHub Actions artifacts. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>