feat(widgets): simplify locations and paid sidebar

Remove deprecated widget locations and widgets, standardize sidebar labels, and render a compact paid-post purchase card in the article sidebar.

sidebar.php

@@ -17,7 +17,7 @@ if (wp_is_mobile()) {
 
 $sidebar_id = function_exists('aksrt_resolve_sidebar_id')
 	? aksrt_resolve_sidebar_id()
-	: 'sidebar-blog';
+	: 'home_sidebar';
 ?>
 
 <div class="sidebar" role="complementary" aria-label="<?php esc_attr_e('侧栏', 'aksrt'); ?>">
@@ -29,8 +29,6 @@ $sidebar_id = function_exists('aksrt_resolve_sidebar_id')
 		<?php dynamic_sidebar($sidebar_id); ?>
 	<?php elseif ((is_home() || is_front_page()) && is_active_sidebar('home_sidebar')) : ?>
 		<?php dynamic_sidebar('home_sidebar'); ?>
-	<?php elseif ((is_home() || is_front_page()) && is_active_sidebar('sidebar-blog')) : ?>
-		<?php dynamic_sidebar('sidebar-blog'); ?>
 	<?php endif; ?>
 
 	<?php if (is_active_sidebar('all_sidebar_bottom')) : ?>