## Summary
- add canonical UI standards under `docs/product/standards/`
- add a comprehensive filter audit as source material for future filter standardization work
- extend the constitution with incremental UI standards enforcement guidance
## Included
- `docs/product/standards/README.md`
- `docs/product/standards/filament-table-ux.md`
- `docs/product/standards/filament-filter-ux.md`
- `docs/product/standards/filament-actions-ux.md`
- `docs/product/standards/list-surface-review-checklist.md`
- `docs/audits/filter-audit-comprehensive.md`
- `.specify/memory/constitution.md`
## Notes
- this is documentation and governance work only; no runtime code paths changed
- no tests were run because the change is docs-only
- the new standards structure separates permanent principles, living standards, rollout audits, and review checklists
## Review Focus
- confirm the standards location under `docs/product/standards/`
- confirm the constitution principle belongs at the constitutional level
- confirm the filter audit should live under `docs/audits/` as reference material
Co-authored-by: Ahmed Darrazi <ahmed.darrazi@live.de>
Reviewed-on: #153
