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/Models/Post.php

@@ -2,25 +2,25 @@
 
 declare(strict_types=1);
 
-
 namespace App\Models;
 
+use App\Support\MediaDisk;
 use Illuminate\Database\Eloquent\Builder;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Relations\BelongsTo;
 use Illuminate\Database\Eloquent\Relations\HasMany;
 use Spatie\MediaLibrary\HasMedia;
-use Xpier\FilamentMediaLibrary\Models\MediaLibrary;
 use Spatie\MediaLibrary\InteractsWithMedia;
 use Spatie\MediaLibrary\MediaCollections\Models\Media;
 use Spatie\Tags\HasTags;
+use Xpier\FilamentMediaLibrary\Models\MediaLibrary;
 
 class Post extends Model implements HasMedia
 {
     use HasFactory;
-    use InteractsWithMedia;
     use HasTags;
+    use InteractsWithMedia;
 
     protected $fillable = [
         'category_id',
@@ -34,6 +34,7 @@ class Post extends Model implements HasMedia
         'cover_media_id',
         'status',
         'is_sticky',
+        'sticky_level',
         'close_comment',
         'read_password',
         'views',
@@ -45,10 +46,63 @@ class Post extends Model implements HasMedia
     protected $casts = [
         'meta' => 'array',
         'is_sticky' => 'boolean',
+        'sticky_level' => 'integer',
         'close_comment' => 'boolean',
         'published_at' => 'datetime',
     ];
 
+    public const STICKY_NONE = 0;
+
+    public const STICKY_LIGHT = 1;
+
+    public const STICKY_STRONG = 2;
+
+    public const STICKY_HEADLINE = 3;
+
+    /**
+     * @return array<int, string>
+     */
+    public static function stickyLevelOptions(): array
+    {
+        return [
+            self::STICKY_NONE => '不置顶',
+            self::STICKY_LIGHT => '轻置顶',
+            self::STICKY_STRONG => '强置顶',
+            self::STICKY_HEADLINE => '置顶头条',
+        ];
+    }
+
+    public function stickyLabel(): ?string
+    {
+        $level = (int) $this->sticky_level;
+
+        return $level > 0 ? (self::stickyLevelOptions()[$level] ?? '置顶') : null;
+    }
+
+    public function isPinned(): bool
+    {
+        return (int) $this->sticky_level > 0 || $this->is_sticky;
+    }
+
+    protected static function booted(): void
+    {
+        static::saving(function (Post $post): void {
+            $level = (int) ($post->sticky_level ?? 0);
+            $post->sticky_level = max(self::STICKY_NONE, min(self::STICKY_HEADLINE, $level));
+
+            if ($post->is_sticky && $post->sticky_level < self::STICKY_LIGHT) {
+                $post->sticky_level = self::STICKY_LIGHT;
+            }
+
+            $post->is_sticky = $post->sticky_level > self::STICKY_NONE;
+        });
+    }
+
+    public function scopeOrderedForList(Builder $query): Builder
+    {
+        return $query->orderByDesc('sticky_level')->latest('published_at');
+    }
+
     public function category(): BelongsTo
     {
         return $this->belongsTo(Category::class);
@@ -107,8 +161,8 @@ class Post extends Model implements HasMedia
 
     public function registerMediaCollections(): void
     {
-        $this->addMediaCollection('attachments')->useDisk(\App\Support\MediaDisk::name());
-        $this->addMediaCollection('cover')->useDisk(\App\Support\MediaDisk::name())
+        $this->addMediaCollection('attachments')->useDisk(MediaDisk::name());
+        $this->addMediaCollection('cover')->useDisk(MediaDisk::name())
             ->singleFile()
             ->registerMediaConversions(function () {
                 $this->addMediaConversion('card')->width(1200)->height(630)->sharpen(1);
@@ -153,13 +207,13 @@ class Post extends Model implements HasMedia
             return '';
         }
 
-        $text = strip_tags($this->content);
+        $text = (new \App\Blog\Support\SablogHtmlNormalizer)->plainText((string) $this->content);
         // 付费块不进入摘要，避免付费内容泄漏到列表页/SEO meta
         $text = preg_replace('/\[paid\].*?\[\/paid\]/s', '', $text) ?? $text;
         $text = preg_replace('/!\[([^\]]*)\]\((?:media|attach):\d+\)/i', '$1', $text) ?? $text;
         $text = preg_replace('/\[([^\]]*)\]\((?:media|attach):\d+\)/i', '$1', $text) ?? $text;
         $text = preg_replace('/\[[^\]]*\]/', '', $text) ?? $text;
 
-        return mb_substr($text, 0, 200);
+        return mb_substr(trim($text), 0, 200);
     }
 }