Engineer reference — Filter Showroom. A DetailPage (locked .sb-shdlg-panel) opened from BOTH the day chip AND the Filters button in the pagehead. Sections: Day (presets + the locked calendar day-cell atom .sb-day — the view targets one day at a time) · Included Users (multi-select of dealers, member rows with a trailing check) · Locations (MultipleLocationsChipsPicker .loc chips — rendered only for multi-location dealerships; empty = all locations). Footer = Reset + primary Apply. Zero new atoms; tokens byte-identical.