- Add test/setup.ts with max 10 concurrent screen sessions limiter
- Add orphaned Claude/screen process cleanup before/after tests
- Add semaphore-based screen slot acquisition for concurrency control
- Update vitest.config.ts with setupFiles and fileParallelism: false
- Add 16 new test files for comprehensive coverage
- Update README badge to show 1337 total tests
- Update CLAUDE.md with test setup documentation
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
