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/Support/PluginServiceProvider.php

@@ -0,0 +1,54 @@
+<?php
+
+namespace App\Blog\Support;
+
+use Illuminate\Support\Facades\Route;
+use Illuminate\Support\Str;
+
+abstract class PluginServiceProvider
+{
+    /**
+     * 插件入口：由 PluginManagerServiceProvider 在应用启动时调用。
+     */
+    public static function bootPlugin(PluginManager $manager): void
+    {
+        (new static)->boot($manager);
+    }
+
+    abstract protected function boot(PluginManager $manager): void;
+
+    protected function addAction(PluginManager $manager, string $hook, callable $callback, int $priority = 10): void
+    {
+        $manager->addAction($hook, $callback, $priority);
+    }
+
+    protected function addFilter(PluginManager $manager, string $hook, callable $callback, int $priority = 10): void
+    {
+        $manager->addFilter($hook, $callback, $priority);
+    }
+
+    /**
+     * 加载插件路由文件。
+     */
+    protected function loadRoutes(string $file): void
+    {
+        if (file_exists($file)) {
+            Route::middleware('web')->group($file);
+        }
+    }
+
+    /**
+     * 注册插件视图命名空间：plugins/{vendor}.{name}/views -> plugin.{vendor}.{name}
+     */
+    protected function loadViews(string $viewsPath, string $namespace): void
+    {
+        if (is_dir($viewsPath)) {
+            \Illuminate\Support\Facades\View::addNamespace($namespace, $viewsPath);
+        }
+    }
+
+    protected function slug(string $string): string
+    {
+        return Str::slug($string);
+    }
+}