rename project from SimpleshopTheme to Berrypod

All modules, configs, paths, and references updated.
836 tests pass, zero warnings.

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

lib/berrypod_web/components/page_templates.ex

@@ -0,0 +1,21 @@
+defmodule BerrypodWeb.PageTemplates do
+  @moduledoc """
+  Shared page templates used by both the public shop and theme preview.
+
+  These templates accept a `mode` parameter to control navigation behavior:
+  - `:shop` - Links navigate normally (real shop pages)
+  - `:preview` - Links send events to parent LiveView (theme editor)
+
+  All templates expect these common assigns:
+  - `theme_settings` - Current theme configuration
+  - `logo_image` - Logo image struct or nil
+  - `header_image` - Header image struct or nil
+  - `mode` - `:shop` or `:preview`
+  - `cart_items` - List of cart items (can be empty)
+  - `cart_count` - Number of items in cart
+  """
+  use Phoenix.Component
+  use BerrypodWeb.ShopComponents
+
+  embed_templates "page_templates/*"
+end