fix: 已解锁后 [paid] 标签裸露——替换为付费内容块

post.rendered 过滤原只在无权限时替换 [paid]；有权限时原始标签直接显示在页面。现在：
- 有权限：替换为 <div class="paid-content"> 付费内容块（带「付费内容」小标签），三套主题补齐样式
- 先去掉 Markdown 转换产生的 <p>[paid]</p> 包裹，避免替换后残留未闭合标签
- 测试：游客与会员均断言不出现裸 [paid]

plugins/neatstudio.membership/src/ServiceProvider.php

@@ -53,15 +53,24 @@ class ServiceProvider extends PluginServiceProvider
             }
         }, 10);
 
-        // 付费文章：[paid]...[/paid] 对无权限访客隐藏为 teaser；整篇锁定渲染 paywall
+        // 付费文章：[paid]...[/paid] —— 无权限访客替换为 teaser；有权限替换为付费内容块（避免原始标签裸露在页面）
         $manager->addFilter('post.rendered', function (string $html, \App\Models\Post $post) {
             $service = app(Services\MembershipService::class);
             $user = auth()->user();
 
-            if (preg_match('/\[paid\](.*?)\[\/paid\]/s', $html) && ! $service->canReadPaidContent($user, $post)) {
+            if (preg_match('/\[paid\](.*?)\[\/paid\]/s', $html)) {
+                // Markdown 转换会给短代码包上 <p>，先去掉，避免替换后残留未闭合标签
+                $html = preg_replace('/<p>\s*\[(\/?paid)\]\s*<\/p>/i', '[$1]', $html);
+
                 $html = preg_replace_callback(
                     '/\[paid\](.*?)\[\/paid\]/s',
-                    fn () => view('membership.paid-teaser', ['post' => $post])->render(),
+                    function (array $m) use ($service, $user, $post) {
+                        if ($service->canReadPaidContent($user, $post)) {
+                            return '<div class="paid-content"><div class="paid-content-label">付费内容</div>'.trim($m[1]).'</div>';
+                        }
+
+                        return view('membership.paid-teaser', ['post' => $post])->render();
+                    },
                     $html
                 );
             }

tests/Feature/MembershipFlowTest.php

@@ -87,21 +87,24 @@ class MembershipFlowTest extends TestCase
             'published_at' => now(),
         ]);
 
-        // 游客：付费部分被替换为 teaser
+        // 游客：付费部分被替换为 teaser，且不出现裸 [paid] 标签
         $this->get('/posts/paid-post.shtml')
             ->assertOk()
             ->assertDontSee('付费隐藏内容')
+            ->assertDontSee('[paid]')
             ->assertSee('本文包含付费内容')
             ->assertSee('登录后查看');
 
-        // 会员：可见
+        // 会员：可见，且 [paid] 标签被替换为付费内容块（不裸露）
         $this->actingAs($this->user)->post('/membership/'.$this->plan->id.'/subscribe');
         $payment = Payment::query()->where('user_id', $this->user->id)->first();
         $this->actingAs($this->user)->post('/pay/sandbox/'.$payment->order_no.'/confirm');
 
         $this->actingAs($this->user)->get('/posts/paid-post.shtml')
             ->assertOk()
-            ->assertSee('付费隐藏内容');
+            ->assertSee('付费隐藏内容')
+            ->assertSee('paid-content')
+            ->assertDontSee('[paid]');
     }
 
     public function test_unlock_post_creates_payment_with_payable_and_grants_access(): void

themes/demo/assets/style.css

@@ -61,3 +61,7 @@ a:hover { color: var(--d-accent-dark); }
     .main-layout { grid-template-columns: 1fr; }
     .d-header .d-container { flex-direction: column; align-items: flex-start; }
 }
+
+/* 已解锁的付费内容块 */
+.paid-content { border: 1px solid var(--d-border); border-left: 4px solid var(--d-accent); background: #fff; border-radius: 8px; padding: 12px 14px; margin: 12px 0; }
+.paid-content-label { font-size: 12px; color: var(--d-accent); font-weight: 700; margin-bottom: 6px; }

themes/modern/assets/style.css

@@ -186,3 +186,7 @@ a:hover { opacity: 0.8; }
 .paywall-actions .btn { margin: 0 6px; }
 .paid-teaser { border: 1px dashed var(--border); background: var(--bg-muted, #f6f6f6); color: var(--muted); border-radius: 10px; padding: 14px 16px; margin: 14px 0; font-size: 14px; }
 .paid-teaser .btn { margin-left: 8px; }
+
+/* 已解锁的付费内容块 */
+.paid-content { border: 1px solid var(--border); border-left: 4px solid var(--accent); background: var(--bg); border-radius: 10px; padding: 14px 16px; margin: 14px 0; }
+.paid-content-label { font-size: 12px; color: var(--accent); font-weight: 600; margin-bottom: 6px; }

themes/sablog/assets/style.css

@@ -163,3 +163,7 @@ a:hover { color: #f60; text-decoration: underline; }
 /* 社交账号：横向胶囊列表 */
 .social-links { list-style: none; display: flex; flex-wrap: wrap; gap: 6px; margin: 0; padding: 0; }
 .social-links li { font-size: 12px; background: #f7f9fb; border: 1px solid #d8dfe6; border-radius: 999px; padding: 3px 10px; }
+
+/* 已解锁的付费内容块 */
+.paid-content { border: 1px dashed #f5c6cb; border-left: 4px solid #f60; background: #fff8f0; border-radius: 6px; padding: 12px 14px; margin: 12px 0; }
+.paid-content-label { font-size: 12px; color: #f60; font-weight: 700; margin-bottom: 6px; }