add legal page generator for privacy, delivery, and terms

Replaces hardcoded PreviewData placeholders with generated content
derived from real shop state: connected providers (production lead
times), shipping countries (grouped by region), shop country
(jurisdiction language and governing law), and feature flags
(abandoned cart recovery section, newsletter, VAT clause).

Returns policy correctly cites Consumer Contracts Regulations Reg
28(1)(b) for POD exemption and Consumer Rights Act for defective goods.
Cart recovery section uses jurisdiction-specific wording: PECR Reg 22
for UK, GDPR Art 6(1)(f) for EU, generic otherwise.

About page unchanged — shop owner's story to tell.

26 new tests.

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

lib/berrypod_web/live/shop/content.ex

@@ -1,6 +1,7 @@
 defmodule BerrypodWeb.Shop.Content do
   use BerrypodWeb, :live_view
 
+  alias Berrypod.LegalPages
   alias Berrypod.Theme.PreviewData
 
   @impl true
@@ -44,7 +45,7 @@ defmodule BerrypodWeb.Shop.Content do
       active_page: "delivery",
       hero_title: "Delivery & returns",
       hero_description: "Everything you need to know about shipping and returns",
-      content_blocks: PreviewData.delivery_content()
+      content_blocks: LegalPages.delivery_content()
     }
   end
 
@@ -56,7 +57,7 @@ defmodule BerrypodWeb.Shop.Content do
       active_page: "privacy",
       hero_title: "Privacy policy",
       hero_description: "How we handle your personal information",
-      content_blocks: PreviewData.privacy_content()
+      content_blocks: LegalPages.privacy_content()
     }
   end
 
@@ -68,7 +69,7 @@ defmodule BerrypodWeb.Shop.Content do
       active_page: "terms",
       hero_title: "Terms of service",
       hero_description: "The legal bits",
-      content_blocks: PreviewData.terms_content()
+      content_blocks: LegalPages.terms_content()
     }
   end
 end