Add community description

prisma/migrations/20251223194345_community_desc/migration.sql

@@ -0,0 +1,2 @@
+-- AlterTable
+ALTER TABLE "Community" ADD COLUMN     "description" TEXT;

prisma/schema.prisma

@@ -11,6 +11,7 @@ datasource db {
 model Community {
     id          String    @id @unique @default(uuid())
     name        String    @unique
+    description String?
     members     User[]
     Channel     Channel[]
     Role        Role[]