feat(widgets): product mini rows + paid list/card styles

Product list mini/list compact DOM; paid posts style mini|list|card via
shared post renderer; residual CSS for mini product/paid grids.

src/AKSRT/Core/WidgetAjax.php

@@ -134,6 +134,7 @@ class WidgetAjax {
 			'orderby'   => sanitize_key((string) ($request->get_param('orderby') ?? 'date')),
 			'cat'       => max(0, (int) ($request->get_param('cat') ?? 0)),
 			'limit_day' => max(0, (int) ($request->get_param('limit_day') ?? 0)),
+			'style'     => sanitize_key((string) ($request->get_param('style') ?? 'mini')),
 			'paginate'  => $paginate,
 		];
 		$page = max(1, (int) ($request->get_param('page') ?? $request->get_param('paged') ?? 1));