## Summary
- tighten the baseline compare matrix working surface with active filter scope summaries and clearer visible-set disclosure
- improve matrix scanability with a sticky subject column, calmer attention-first cell styling, and Filament form-based filter controls
- replace the misleading perpetual refresh loading state with a passive auto-refresh note and add focused regression coverage
## Testing
- `cd apps/platform && ./vendor/bin/sail bin pint --dirty --format agent`
- `cd apps/platform && ./vendor/bin/sail artisan test --compact tests/Feature/Filament/BaselineCompareMatrixPageTest.php`
## Notes
- this PR only contains the Spec 190 implementation changes on `190-baseline-compare-matrix`
- follow-up spec drafting for high-density operator mode was intentionally left out of this PR
Co-authored-by: Ahmed Darrazi <ahmed.darrazi@live.de>
Reviewed-on: #222
ahmido
65e10a2020