fixed type error on setup server page

prisma/migrations/20261021133512_archived_at_optional/migration.sql

@@ -0,0 +1,2 @@
+-- AlterTable
+ALTER TABLE "Project" ALTER COLUMN "archivedAt" DROP NOT NULL;

prisma/schema.prisma

@@ -66,7 +66,7 @@ model Project {
   name        String      @unique
   createdAt   DateTime    @default(now())
   updatedAt   DateTime    @updatedAt
-  archivedAt  DateTime
+  archivedAt  DateTime?
 
   memberships Membership[]
   invites     InviteToken[]