test: export and PDF regression for Fee Type without start_date

Add test for CSV export with only first_name and membership_fee_type.
Add test for PDF export with same field set (status and content-type).

test/mv_web/controllers/member_export_controller_test.exs

@@ -177,6 +177,39 @@ defmodule MvWeb.MemberExportControllerTest do
       assert body =~ "Alice"
     end
 
+    # Regression: when membership_fee_start_date is not in member_fields, Fee Type must still be exported (append fallback)
+    test "export includes Fee Type when only first_name and membership_fee_type are requested (no start_date)",
+         %{
+           conn: conn,
+           member1: m1
+         } do
+      payload = %{
+        "selected_ids" => [m1.id],
+        "member_fields" => ["first_name", "membership_fee_type"],
+        "custom_field_ids" => [],
+        "query" => nil,
+        "sort_field" => nil,
+        "sort_order" => nil
+      }
+
+      conn = get(conn, "/members")
+      csrf_token = csrf_token_from_conn(conn)
+
+      conn =
+        post(conn, "/members/export.csv", %{
+          "payload" => Jason.encode!(payload),
+          "_csrf_token" => csrf_token
+        })
+
+      assert conn.status == 200
+      body = response(conn, 200)
+      header = body |> export_lines() |> hd()
+
+      assert header =~ "Fee Type"
+      assert header =~ "First Name"
+      assert body =~ "Alice"
+    end
+
     test "export includes membership_fee_status computed field when requested", %{
       conn: conn,
       member1: m1
@@ -532,4 +565,40 @@ defmodule MvWeb.MemberExportControllerTest do
       assert membership_idx < active_idx
     end
   end
+
+  describe "POST /members/export.pdf" do
+    test "PDF export includes Fee Type column when requested without membership_fee_start_date",
+         %{
+           conn: conn
+         } do
+      m =
+        Fixtures.member_fixture(%{first_name: "PDF", last_name: "Test", email: "pdf@example.com"})
+
+      payload = %{
+        "selected_ids" => [m.id],
+        "member_fields" => ["first_name", "membership_fee_type"],
+        "custom_field_ids" => [],
+        "query" => nil,
+        "sort_field" => nil,
+        "sort_order" => nil
+      }
+
+      conn = get(conn, "/members")
+      csrf_token = csrf_token_from_conn(conn)
+
+      conn =
+        post(conn, "/members/export.pdf", %{
+          "payload" => Jason.encode!(payload),
+          "_csrf_token" => csrf_token
+        })
+
+      assert conn.status == 200
+      assert get_resp_header(conn, "content-type") |> List.first() =~ "application/pdf"
+
+      body = response(conn, 200)
+
+      # PDF is generated successfully with Fee Type in columns (regression: fee type without start_date)
+      assert is_binary(body) and byte_size(body) > 0
+    end
+  end
 end