Member/Setting/validations: domain, actor, and seeds

- setting.ex: domain/authorize for default_membership_fee_type_id check
- validate_same_interval: require membership_fee_type (no None)
- set_membership_fee_start_date: domain/actor for fee type lookup
- Validations: domain/authorize for cross-resource checks
- helpers.ex, email_sync change, seeds.exs actor/authorize fixes
- Update related tests

priv/repo/seeds.exs

@@ -10,7 +10,7 @@ alias Mv.MembershipFees.CycleGenerator
 
 require Ash.Query
 
-# Create example membership fee types
+# Create example membership fee types (no admin user yet; skip authorization for bootstrap)
 for fee_type_attrs <- [
       %{
         name: "Standard (Jährlich)",
@@ -39,7 +39,12 @@ for fee_type_attrs <- [
     ] do
   MembershipFeeType
   |> Ash.Changeset.for_create(:create, fee_type_attrs)
-  |> Ash.create!(upsert?: true, upsert_identity: :unique_name)
+  |> Ash.create!(
+    upsert?: true,
+    upsert_identity: :unique_name,
+    authorize?: false,
+    domain: Mv.MembershipFees
+  )
 end
 
 for attrs <- [
@@ -299,12 +304,12 @@ case Accounts.User
     IO.puts("SystemActor will fall back to admin user (#{admin_email})")
 end
 
-# Load all membership fee types for assignment
+# Load all membership fee types for assignment (admin actor for authorization)
 # Sort by name to ensure deterministic order
 all_fee_types =
   MembershipFeeType
   |> Ash.Query.sort(name: :asc)
-  |> Ash.read!()
+  |> Ash.read!(actor: admin_user_with_role, domain: Mv.MembershipFees)
   |> Enum.to_list()
 
 # Create sample members for testing - use upsert to prevent duplicates