DEFAULT_GRID_ICONS
Since v0.1.1
Default icons used when not overridden. Most entries are short text/emoji;
filter and filterActive are empty strings because the actual rendering
is driven by the --tbw-icon-filter[-active]-mask CSS custom properties
(see core/styles/variables.css). Userland that wants an HTML/SVG fallback
via gridConfig.icons.filter = '<svg…>' is unaffected — that path overrides this default.
const DEFAULT_GRID_ICONS: Required<GridIcons>