套餐列表：增加快捷筛选并仅保留上下文字段

resources/views/admin/plans/index.blade.php

@@ -41,6 +41,63 @@
     @endif
 </div>
 
+<div class="card mb-20">
+    <h3>快捷筛选</h3>
+    <div class="muted mb-10">用于运营快速定位需要处理的套餐集合（口径基于筛选条件组合）。</div>
+
+    @php
+        // 快捷筛选：仅保留“上下文”字段（back/keyword），避免把其它筛选条件叠加导致空结果
+        $buildQuickFilterUrl = function (array $overrides) {
+            $path = '/' . ltrim(request()->path(), '/');
+
+            $contextKeys = [
+                'back' => 1,
+                'keyword' => 1,
+            ];
+
+            $q = array_intersect_key(request()->query(), $contextKeys);
+
+            foreach ($overrides as $k => $v) {
+                if ($v === null) {
+                    unset($q[$k]);
+                    continue;
+                }
+                $q[$k] = $v;
+            }
+
+            if (count($q) === 0) {
+                return $path;
+            }
+
+            return $path . '?' . \Illuminate\Support\Arr::query($q);
+        };
+
+        // “全部”：清空筛选，但保留 back（用于返回来源页）
+        $incomingBack = (string) request()->query('back', '');
+        $safeBack2 = str_starts_with($incomingBack, '/') ? $incomingBack : '';
+        $allUrl = '/admin/plans';
+        if ($safeBack2 !== '') {
+            $allUrl .= '?' . \Illuminate\Support\Arr::query(['back' => $safeBack2]);
+        }
+    @endphp
+
+    <div>
+        <a href="{!! $allUrl !!}" class="muted">全部</a>
+        <span class="muted">｜</span>
+        <a href="{!! $buildQuickFilterUrl(['status' => 'active']) !!}" class="muted">启用中</a>
+        <span class="muted">｜</span>
+        <a href="{!! $buildQuickFilterUrl(['status' => 'inactive']) !!}" class="muted">停用</a>
+        <span class="muted">｜</span>
+        <a href="{!! $buildQuickFilterUrl(['published' => 'published']) !!}" class="muted">已发布</a>
+        <span class="muted">｜</span>
+        <a href="{!! $buildQuickFilterUrl(['published' => 'unpublished']) !!}" class="muted">未发布</a>
+        <span class="muted">｜</span>
+        <a href="{!! $buildQuickFilterUrl(['billing_cycle' => 'monthly']) !!}" class="muted">月付</a>
+        <span class="muted">｜</span>
+        <a href="{!! $buildQuickFilterUrl(['billing_cycle' => 'yearly']) !!}" class="muted">年付</a>
+    </div>
+</div>
+
 <div class="card mb-20">
     <h3>工具</h3>
     <div class="grid-2">

tests/Feature/AdminPlanIndexQuickFilterLinksKeepContextTest.php

@@ -0,0 +1,41 @@
+<?php
+
+namespace Tests\Feature;
+
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Tests\TestCase;
+
+class AdminPlanIndexQuickFilterLinksKeepContextTest extends TestCase
+{
+    use RefreshDatabase;
+
+    protected function loginAsPlatformAdmin(): void
+    {
+        $this->seed();
+
+        $this->post('/admin/login', [
+            'email' => 'platform.admin@demo.local',
+            'password' => 'Platform@123456',
+        ])->assertRedirect('/admin');
+    }
+
+    public function test_quick_filter_links_should_keep_context_and_drop_other_filters(): void
+    {
+        $this->loginAsPlatformAdmin();
+
+        // 目前 plans/index 没有“快捷筛选”区块，这个测试先作为护栏：
+        // 一旦我们加上快捷筛选，就要求它只保留上下文键（back/keyword），不继承 page。
+        // 这里先访问带筛选与 page/back 的页面，确保不会出现携带 page 的快捷筛选链接（未来回归用）。
+        $res = $this->get('/admin/plans?status=active&billing_cycle=monthly&keyword=abc&page=9&back=%2Fadmin%2Fplatform-orders');
+        $res->assertOk();
+
+        $html = (string) $res->getContent();
+
+        // 当前版本没有快捷筛选区块：先断言页面中存在返回链接与新建套餐链接（保证页面渲染正常）
+        $res->assertSee('套餐管理', false);
+        $res->assertSee('/admin/plans/create?', false);
+
+        // 兜底护栏：页面中不应出现带 page=9 的“固定快捷筛选链接”（避免未来引入时误带 page）
+        $this->assertStringNotContainsString('page=9', $html);
+    }
+}