feat: 角色卡 demo

wei_ai_app/supabase/migrations/003_create_storage.sql

@@ -0,0 +1,31 @@
+-- =============================================
+-- Wei AI App - Storage Bucket 创建
+-- 注意：Storage 的 bucket 需要通过 Supabase Dashboard 或 API 创建
+-- 这个 SQL 仅用于记录需要创建的 bucket
+-- =============================================
+
+-- Storage Bucket 配置说明：
+-- 
+-- Bucket Name: avatars
+-- Public: true (头像需要公开访问)
+-- File Size Limit: 5MB
+-- Allowed MIME Types: image/png, image/jpeg, image/webp, image/gif
+--
+-- 在 Supabase Studio 中手动创建，或使用以下 API:
+-- 
+-- POST /storage/v1/bucket
+-- {
+--   "id": "avatars",
+--   "name": "avatars",
+--   "public": true,
+--   "file_size_limit": 5242880,
+--   "allowed_mime_types": ["image/png", "image/jpeg", "image/webp", "image/gif"]
+-- }
+
+-- Storage RLS 策略（需要在 Supabase Dashboard 中配置）
+-- 允许所有人读取头像
+-- CREATE POLICY "Public Access" ON storage.objects FOR SELECT USING (bucket_id = 'avatars');
+-- 
+-- 仅允许管理员上传（后续可修改）
+-- CREATE POLICY "Admin Upload" ON storage.objects FOR INSERT 
+--   WITH CHECK (bucket_id = 'avatars' AND auth.role() = 'service_role');