增加广播栏

yelaymaths_api/prisma/schema.prisma

@@ -201,7 +201,8 @@ model CourseTip {
 model Setting {
   id     Int     @id @default(autoincrement()) @db.UnsignedInt
   key    String  @unique @db.VarChar(64)
-  value  String? @db.VarChar(255)
+  /// TEXT：首页广播这类长文案要放进来，255 不够用
+  value  String? @db.Text
   remark String? @db.VarChar(255)
 
   @@map("settings")