Refactored the grid filter panel system:
- Renamed "quick-filter panel" to "filter panel" throughout.
- Introduced IMgGridFilterPanelComponent interface for filter panel contract.
- Split MgTagBox (now behavior-free) and new MgGridFilterPanelTagBox for grid filter logic.
- Grid tracks filter panel components, synchronizes criteria, and exposes new filter panel methods.
- Filter panel always rendered (CSS-hidden when off) to prevent invisible filtering.
- Added right-aligned "Clear Filters" button for panel-owned filters.
- Updated docs, parameter tables, and glossary for new terminology and structure.
- Updated usages to new component; legacy grid class implements no-op interface.
- Documented edge cases and updated CSS for new layout.
Loretta
b06d321bfb