feat: 前台整页响应缓存（匿名 GET，浏览量走 track-view 独立端点）+ 后台缓存管理页 + 侧边栏 nav-groups 负 margin 归零

app/Blog/Controllers/PostController.php

@@ -25,7 +25,7 @@ class PostController extends Controller
 
         $this->ensureReadable($post);
 
-        $post->increment('views');
+        // 浏览量由 /track-view 端点统计（页面整页缓存下控制器不执行，避免双计）
 
         $comments = $post->comments()
             ->where('status', 'published')

app/Blog/Support/PageCacheMiddleware.php

@@ -0,0 +1,99 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Blog\Support;
+
+use Illuminate\Http\Request;
+use Illuminate\Support\Facades\Cache;
+use Symfony\Component\HttpFoundation\Response;
+
+/**
+ * 前台页面响应缓存：
+ * - 仅缓存匿名 GET 请求的 HTML 页面（首页/列表/文章/归档/标签等）
+ * - 登录用户、后台、API、动态端点不缓存
+ * - 浏览量走独立的 /track-view 端点，不受整页缓存影响
+ */
+class PageCacheMiddleware
+{
+    public const TAG = 'pages';
+
+    public function handle(Request $request, \Closure $next): Response
+    {
+        if (! $this->shouldCache($request)) {
+            return $next($request);
+        }
+
+        $key = $this->key($request);
+        $ttl = (int) config('blog.page_cache_ttl', 300);
+
+        if ($cached = Cache::get($key)) {
+            return response($cached['body'], 200, [
+                'Content-Type' => $cached['type'],
+                'Cache-Control' => 'public, max-age='.$ttl,
+            ]);
+        }
+
+        $response = $next($request);
+
+        if ($response->getStatusCode() === 200) {
+            Cache::put($key, [
+                'body' => $response->getContent(),
+                'type' => $response->headers->get('Content-Type') ?: 'text/html; charset=utf-8',
+            ], $ttl);
+            self::rememberKey($key);
+        }
+
+        return $response;
+    }
+
+    public static function flush(): void
+    {
+        foreach ((array) Cache::get(self::TAG.'_keys', []) as $key) {
+            Cache::forget($key);
+        }
+
+        Cache::forget(self::TAG.'_keys');
+    }
+
+    public static function count(): int
+    {
+        return count((array) Cache::get(self::TAG.'_keys', []));
+    }
+
+    private static function rememberKey(string $key): void
+    {
+        $keys = (array) Cache::get(self::TAG.'_keys', []);
+        $keys[$key] = true;
+        Cache::put(self::TAG.'_keys', $keys, now()->addDay());
+    }
+
+    private function shouldCache(Request $request): bool
+    {
+        if (! $request->isMethod('GET')) {
+            return false;
+        }
+
+        if (auth()->check()) {
+            return false;
+        }
+
+        $path = $request->path();
+
+        if (str_starts_with($path, 'admin') || str_starts_with($path, 'api') || str_starts_with($path, 'themes')) {
+            return false;
+        }
+
+        // 动态端点
+        if (str_starts_with($path, 'track-view')) {
+            return false;
+        }
+
+        return true;
+    }
+
+    private function key(Request $request): string
+    {
+        return self::TAG.':'.md5($request->fullUrl());
+    }
+}