feat: use xpier media library for uploads and markdown embeds

Store media:ID in post bodies instead of CDN URLs, and keep sablog attach tokens as a fallback.

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

plugins/neatstudio.blog-seo/src/Http/Middleware/SeoMiddleware.php

@@ -84,8 +84,8 @@ class SeoMiddleware
                     'mainEntityOfPage' => route('posts.show', $post->slug ?: $post->id),
                 ];
 
-                if ($cover = $post->getFirstMedia('cover')) {
-                    $data['image'] = [$cover->getUrl('card') ?: $cover->getUrl()];
+                if ($cover = $post->coverImageUrl()) {
+                    $data['image'] = [$cover];
                 }
 
                 return $data;

plugins/neatstudio.link-tracker/database/migrations/2026_08_12_400000_create_redirects_table.php

@@ -24,10 +24,14 @@ return new class extends Migration
             $table->string('status', 20)->default('active'); // active / disabled
             $table->timestamp('last_clicked_at')->nullable();
             $table->timestamps();
-
-            // MySQL 5.7 不支持对 TEXT 建全值索引，用前缀索引
-            $table->index([DB::raw('target_url(191)')], 'redirects_target_url_index');
         });
+
+        // MySQL 5.7 cannot index TEXT fully; SQLite does not support prefix indexes.
+        if (Schema::getConnection()->getDriverName() === 'mysql') {
+            Schema::table('redirects', function (Blueprint $table): void {
+                $table->index([DB::raw('target_url(191)')], 'redirects_target_url_index');
+            });
+        }
     }
 
     public function down(): void