panel-right-open from coolicons in Line with regular corners. sidebar, expand, show, layout, pane. Other styles and corners: @coolicons/<style>/<radius>/panel-right-open with line, duocolor, duotone, fill or bulk and sharp or round. Leave out regular, like @coolicons/fill/panel-right-open, and use @coolicons/panel-right-open for line with regular corners.
pnpm dlx shadcn@latest add "https://coolicons.cool/r/panel-right-open.json"