feat: add custom email type for validation

priv/repo/seeds.exs

@@ -2,13 +2,6 @@
 #
 #     mix run priv/repo/seeds.exs
 #
-# Inside the script, you can read and write to any of your
-# repositories directly:
-#
-#     Mv.Repo.insert!(%Mv.SomeSchema{})
-#
-# We recommend using the bang functions (`insert!`, `update!`
-# and so on) as they will fail if something goes wrong.
 
 alias Mv.Membership
 
@@ -43,18 +36,15 @@ for attrs <- [
       },
       %{
         name: "Email",
-        value_type: :string,
+        value_type: :email,
         description: "Email-Adresse des Mitglieds",
         immutable: true,
         required: true
       }
     ] do
-  # upsert?: true sorgt dafür, dass bei bestehendem Namen kein Fehler, 
-  # sondern ein Update (hier effektiv No-Op) ausgeführt wird
-  {:ok, _} =
-    Membership.create_property_type(
-      attrs,
-      upsert?: true,
-      upsert_identity: :unique_name
-    )
+  Membership.create_property_type!(
+    attrs,
+    upsert?: true,
+    upsert_identity: :unique_name
+  )
 end