feat: restore sablog browse modes and clean imported HTML

Keep the public site readable after import (nbsp, highlighter, wrapping code, compact pager) and finish the admin extras already in this tree: sticky levels, preview, page cache, and live llms.txt.

Co-authored-by: Cursor <cursoragent@cursor.com>

app/Filament/Widgets/BlogStats.php

@@ -2,9 +2,10 @@
 
 declare(strict_types=1);
 
-
 namespace App\Filament\Widgets;
 
+use App\Blog\Support\PageCacheMiddleware;
+use App\Filament\Pages\PageCache;
 use App\Models\Comment;
 use App\Models\Post;
 use App\Models\User;
@@ -17,7 +18,7 @@ class BlogStats extends BaseWidget
 
     protected function getStats(): array
     {
-        $cache = \App\Blog\Support\PageCacheMiddleware::stats();
+        $cache = PageCacheMiddleware::stats();
 
         return [
             Stat::make('文章', Post::published()->count())
@@ -30,6 +31,7 @@ class BlogStats extends BaseWidget
                 ->icon('heroicon-o-users'),
             Stat::make('页面缓存', $cache['count'].' 条')
                 ->description('命中率 '.$cache['rate'].'%（命中 '.$cache['hits'].' / 未命中 '.$cache['misses'].'，按日滚动）')
+                ->url(PageCache::getUrl())
                 ->icon('heroicon-o-bolt'),
         ];
     }