- Mirrors the Tooltip pattern: render-prop composition, data-slot attrs
- Exports Popover (Root), PopoverTrigger, PopoverContent (Portal+Positioner+Popup)
- MD3 popover/popover-foreground tokens, animated open/close states
- Will be used to consolidate the backlog filter UI in ST-1109.8
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
