fix privacy policy niggles and add last-updated date to legal pages

- Capitalise lead sentence regardless of shop_name value
- Add stripe.com/privacy URL when mentioning Stripe in payment section
- Remove mention of logout from session cookie description
- Make third-party sharing text provider-agnostic (no longer names Printify etc.)
- Add :updated_at block to privacy, delivery, and terms pages showing when
  content last changed — auto-tracked via content hash, so the date advances
  automatically whenever relevant settings change

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

assets/css/shop/components.css

@@ -2043,10 +2043,16 @@
 
   .rich-text-lead {
     font-size: var(--t-text-large);
-    margin-bottom: 1rem;
+    margin-bottom: 0.5rem;
     color: var(--t-text-primary);
   }
 
+  .rich-text-updated-at {
+    font-size: var(--t-text-small);
+    color: var(--t-text-secondary);
+    margin-bottom: 2rem;
+  }
+
   .rich-text-paragraph {
     margin-bottom: 1rem;
     color: var(--t-text-secondary);

lib/berrypod/legal_pages.ex

@@ -26,6 +26,12 @@ defmodule Berrypod.LegalPages do
   newsletter).
   """
   def privacy_content do
+    blocks = privacy_blocks()
+    date = track_and_get_date("privacy", blocks)
+    insert_version(blocks, date)
+  end
+
+  defp privacy_blocks do
     shop_name = Settings.get_setting("shop_name", "this shop")
     contact_email = Settings.get_setting("contact_email")
     shop_country = Settings.get_setting("shop_country", "GB")
@@ -38,6 +44,7 @@ defmodule Berrypod.LegalPages do
         type: :lead,
         text:
           "#{shop_name} takes your privacy seriously. This policy explains what personal data we collect and how we use it, #{jurisdiction(shop_country)}."
+          |> capitalise()
       },
       %{type: :heading, text: "What we collect"},
       %{
@@ -49,7 +56,7 @@ defmodule Berrypod.LegalPages do
       %{
         type: :paragraph,
         text:
-          "Payment is processed by Stripe. We never see or store your card number or payment details — these go directly to Stripe and are subject to their privacy policy."
+          "Payment is processed by Stripe (stripe.com/privacy). We never see or store your card number or payment details — these go directly to Stripe and are subject to their privacy policy."
       },
       %{type: :heading, text: "Analytics"},
       %{
@@ -61,7 +68,7 @@ defmodule Berrypod.LegalPages do
       %{
         type: :list,
         items: [
-          "_berrypod_session — keeps your shopping cart and login session active. Expires after 7 days or when you log out. Strictly necessary; no consent required.",
+          "_berrypod_session — keeps your shopping cart and login session active. Stored for up to 7 days. Strictly necessary; no consent required.",
           "country_code — remembers your shipping country preference. Stored for 1 year. Strictly necessary for showing correct shipping rates; no consent required."
         ]
       },
@@ -114,6 +121,12 @@ defmodule Berrypod.LegalPages do
   Returns policy cites the correct UK legal exemptions for POD.
   """
   def delivery_content do
+    blocks = delivery_blocks()
+    date = track_and_get_date("delivery", blocks)
+    insert_version(blocks, date)
+  end
+
+  defp delivery_blocks do
     providers = connected_providers()
     countries = Shipping.list_available_countries_with_names()
     contact_email = Settings.get_setting("contact_email")
@@ -154,6 +167,12 @@ defmodule Berrypod.LegalPages do
   when the vat_enabled setting is true.
   """
   def terms_content do
+    blocks = terms_blocks()
+    date = track_and_get_date("terms", blocks)
+    insert_version(blocks, date)
+  end
+
+  defp terms_blocks do
     shop_name = Settings.get_setting("shop_name", "this shop")
     shop_country = Settings.get_setting("shop_country", "GB")
     vat_enabled = Settings.get_setting("vat_enabled", false)
@@ -363,14 +382,12 @@ defmodule Berrypod.LegalPages do
     "To fulfil your order, we share your name and shipping address with our print-on-demand provider. Payment details are handled by Stripe. Both process data in accordance with their own privacy policies."
   end
 
-  defp provider_sharing_text([name]) do
-    "To fulfil your order, we share your name and shipping address with #{name}. Payment details are handled by Stripe. Both process data in accordance with their own privacy policies."
+  defp provider_sharing_text([_]) do
+    "To fulfil your order, we share your name and shipping address with our print-on-demand provider. Payment details are handled by Stripe. Both process data in accordance with their own privacy policies."
   end
 
-  defp provider_sharing_text(names) do
-    joined = Enum.join(names, " and ")
-
-    "To fulfil your order, we share your name and shipping address with #{joined}. Payment details are handled by Stripe. All process data in accordance with their own privacy policies."
+  defp provider_sharing_text(_names) do
+    "To fulfil your order, we share your name and shipping address with our print-on-demand providers. Payment details are handled by Stripe. All process data in accordance with their own privacy policies."
   end
 
   defp contact_text(nil),
@@ -394,4 +411,35 @@ defmodule Berrypod.LegalPages do
   defp legal_disclaimer do
     "This page was generated from this shop's configuration. It's a good starting point — review it and take independent legal advice if you're unsure about anything."
   end
+
+  # Inserts an :updated_at block immediately after the first :lead block.
+  defp insert_version([%{type: :lead} = lead | rest], date) do
+    [lead, %{type: :updated_at, date: date} | rest]
+  end
+
+  defp insert_version(blocks, _date), do: blocks
+
+  # Stores a hash of the content blocks in settings. When the hash changes
+  # (i.e. relevant settings changed), records today as the new updated date.
+  defp track_and_get_date(page_key, blocks) do
+    hash = :erlang.phash2(blocks) |> Integer.to_string()
+    hash_key = "#{page_key}_policy_hash"
+    date_key = "#{page_key}_policy_updated_at"
+
+    if hash != Settings.get_setting(hash_key) do
+      today = format_date(Date.utc_today())
+      Settings.put_setting(hash_key, hash)
+      Settings.put_setting(date_key, today)
+      today
+    else
+      Settings.get_setting(date_key, format_date(Date.utc_today()))
+    end
+  end
+
+  defp format_date(%Date{} = date) do
+    "#{date.day} #{Calendar.strftime(date, "%B")} #{date.year}"
+  end
+
+  defp capitalise(<<first::utf8, rest::binary>>), do: String.upcase(<<first::utf8>>) <> rest
+  defp capitalise(""), do: ""
 end

lib/berrypod_web/components/shop_components/content.ex

@@ -926,6 +926,14 @@ defmodule BerrypodWeb.ShopComponents.Content do
     """
   end
 
+  defp rich_text_block(%{block: %{type: :updated_at}} = assigns) do
+    ~H"""
+    <p class="rich-text-updated-at">
+      Last updated: {@block.date}
+    </p>
+    """
+  end
+
   defp rich_text_block(%{block: %{type: :paragraph}} = assigns) do
     ~H"""
     <p class="rich-text-paragraph">