add order status lookup for customers

Magic link flow on contact page: customer enters email, gets a
time-limited signed link, clicks through to /orders showing all their
paid orders and full detail pages with thumbnails and product links.

- OrderLookupController generates/verifies Phoenix.Token signed links
- Contact LiveView handles lookup_orders + reset_tracking events
- Orders and OrderDetail LiveViews gated by session email
- Order detail shows thumbnails, links to products still available
- .themed-button gets base padding/font-weight so all usages are consistent
- order-summary-card sticky scoped to .cart-grid (was leaking to orders list)
- 27 new tests (1095 total)

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

lib/berrypod_web/components/page_templates.ex

@@ -18,4 +18,13 @@ defmodule BerrypodWeb.PageTemplates do
   use BerrypodWeb.ShopComponents
 
   embed_templates "page_templates/*"
+
+  def format_order_status("unfulfilled"), do: "Being prepared"
+  def format_order_status("submitted"), do: "Sent to printer"
+  def format_order_status("processing"), do: "In production"
+  def format_order_status("shipped"), do: "On its way"
+  def format_order_status("delivered"), do: "Delivered"
+  def format_order_status("failed"), do: "Issue — contact us"
+  def format_order_status("cancelled"), do: "Cancelled"
+  def format_order_status(status), do: status
 end