use shop_name and email_from_address settings for all outbound emails

All three notifier functions (order confirmation, shipping, cart
recovery) now read from the same two settings rather than using
hardcoded values or duplicating the lookup.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

lib/berrypod/orders/order_notifier.ex

@@ -98,8 +98,6 @@ defmodule Berrypod.Orders.OrderNotifier do
   Plain text, no tracking pixels, single send. Includes an unsubscribe link.
   """
   def deliver_cart_recovery(cart, order, unsubscribe_url) do
-    from_address = Berrypod.Settings.get_setting("email_from_address", "contact@example.com")
-    subject = "You left something behind"
     base_url = BerrypodWeb.Endpoint.url()
 
     body = """
@@ -118,33 +116,19 @@ defmodule Berrypod.Orders.OrderNotifier do
     ==============================
     """
 
-    email =
+    deliver(cart.customer_email, "You left something behind", body)
-      new()
-      |> to(cart.customer_email)
-      |> from(from_address)
-      |> subject(subject)
-      |> text_body(body)
-
-    case Mailer.deliver(email) do
-      {:ok, _metadata} = result ->
-        result
-
-      {:error, reason} = error ->
-        Logger.warning(
-          "Failed to send cart recovery email to #{cart.customer_email}: #{inspect(reason)}"
-        )
-
-        error
-    end
   end
 
   # --- Private ---
 
   defp deliver(recipient, subject, body) do
+    shop_name = Berrypod.Settings.get_setting("shop_name", "Berrypod")
+    from_address = Berrypod.Settings.get_setting("email_from_address", "contact@example.com")
+
     email =
       new()
       |> to(recipient)
-      |> from({"Berrypod", "contact@example.com"})
+      |> from({shop_name, from_address})
       |> subject(subject)
       |> text_body(body)