feat: Introduce adult content browsing with dynamic tag management, aggregated categories, and a video content grid.

lib/constants/adult-tags.ts

@@ -0,0 +1,7 @@
+import { Tag } from '@/components/home/SortableTag';
+
+// 成人模式默认标签配置
+// 现在完全由API动态获取，此处仅保留类型定义和Storage Key
+export const ADULT_DEFAULT_TAGS: Tag[] = [];
+
+export const ADULT_STORAGE_KEY = 'kvideo_adult_custom_tags';