fix: 修复子类别筛选按钮点击无效问题

- 用containerId判断currentFilter，而非categoryId
- 用previousElementSibling找全部按钮，而非parent.querySelector
- 确保点击子类别后样式正确切换
- 全部按钮和子类别按钮互斥选中状态

templates/admin.html

@@ -535,27 +535,26 @@
                 return;
             }
             
-            // 获取当前筛选值
+            // 获取当前筛选值 - 根据容器ID判断
             let currentFilter = '';
-            if (categoryId === 'ai-models') currentFilter = modelSubcategoryFilter;
-            else if (categoryId === 'gpus') currentFilter = gpuSubcategoryFilter;
-            else if (categoryId === 'cpus') currentFilter = cpuSubcategoryFilter;
-            else if (categoryId === dynamicCategoryId) currentFilter = dynamicSubcategoryFilter;
+            if (containerId === 'model-subcategory-filters') currentFilter = modelSubcategoryFilter;
+            else if (containerId === 'gpu-subcategory-filters') currentFilter = gpuSubcategoryFilter;
+            else if (containerId === 'cpu-subcategory-filters') currentFilter = cpuSubcategoryFilter;
+            else if (containerId === 'dynamic-subcategory-filters') currentFilter = dynamicSubcategoryFilter;
             
-            // 只渲染子类别按钮，不渲染"全部"按钮（HTML里已有）
+            // 渲染子类别按钮
             container.innerHTML = cat.subcategories.map(sub => `
                 <button onclick="${filterFunction}('${sub.id}')" class="px-3 py-1 rounded text-sm ${currentFilter === sub.id ? 'bg-indigo-600 text-white' : 'bg-white border text-gray-600 hover:bg-gray-100'}">
                     <i class="${sub.icon || 'ri-folder-line'} mr-1"></i>${sub.name}
                 </button>
             `).join('');
             
-            // 更新"全部"按钮的样式
-            const parent = container.parentElement;
-            if (parent) {
-                const allBtn = parent.querySelector('button:first-of-type');
-                if (allBtn && currentFilter === '') {
+            // 更新"全部"按钮的样式 - 它是容器前面的那个按钮
+            const allBtn = container.previousElementSibling;
+            if (allBtn && allBtn.tagName === 'BUTTON') {
+                if (currentFilter === '') {
                     allBtn.className = 'px-3 py-1 rounded text-sm bg-indigo-600 text-white';
-                } else if (allBtn) {
+                } else {
                     allBtn.className = 'px-3 py-1 rounded text-sm bg-white border text-gray-600 hover:bg-gray-100';
                 }
             }