M4: 插件框架（钩子系统/ZIP安装/市场客户端）+ blog-seo 插件（JSON-LD/OG/llms.txt/Markdown导出）+ 后台插件/主题管理页

app/Blog/Providers/PluginManagerServiceProvider.php

@@ -0,0 +1,40 @@
+<?php
+
+namespace App\Blog\Providers;
+
+use App\Blog\Support\PluginManager;
+use Illuminate\Support\ServiceProvider;
+
+class PluginManagerServiceProvider extends ServiceProvider
+{
+    public function register(): void
+    {
+        $this->app->singleton(PluginManager::class);
+    }
+
+    public function boot(): void
+    {
+        $manager = $this->app->make(PluginManager::class);
+
+        // 迁移尚未执行（migrate:fresh 首轮）时跳过，避免查询不存在的表
+        if (! \Illuminate\Support\Facades\Schema::hasTable('plugin_records')) {
+            return;
+        }
+
+        if (! is_dir(config('plugins.path'))) {
+            return;
+        }
+
+        foreach ($manager->all() as $key => $plugin) {
+            if (! $plugin['enabled']) {
+                continue;
+            }
+
+            $provider = $manager->resolveProvider($key);
+
+            if ($provider && class_exists($provider)) {
+                $provider::bootPlugin($manager);
+            }
+        }
+    }
+}