extract site_name and site_description from theme settings into standalone settings

site_name and site_description are shop identity, not theme concerns.
They now live in the Settings table as first-class settings with their
own assigns (@site_name, @site_description) piped through hooks and
plugs. The setup wizard writes site_name on account creation, and the
theme editor reads/writes via Settings.put_setting. Removed the
"configure your shop" checklist item since currency/country aren't
built yet. Also adds shop name field to setup wizard step 1.

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

lib/berrypod_web/live/admin/theme/index.ex

@@ -26,6 +26,8 @@ defmodule BerrypodWeb.Admin.Theme.Index do
     socket =
       socket
       |> assign(:theme_settings, theme_settings)
+      |> assign(:site_name, Settings.site_name())
+      |> assign(:site_description, Settings.site_description())
       |> assign(:generated_css, generated_css)
       |> assign(:preview_page, :home)
       |> assign(:presets_with_descriptions, Presets.all_with_descriptions())
@@ -174,6 +176,16 @@ defmodule BerrypodWeb.Admin.Theme.Index do
     {:noreply, socket}
   end
 
+  # Settings stored outside the theme JSON
+  @standalone_settings ~w(site_name site_description)
+
+  @impl true
+  def handle_event("update_setting", %{"field" => field, "setting_value" => value}, socket)
+      when field in @standalone_settings do
+    Settings.put_setting(field, value, "string")
+    {:noreply, assign(socket, String.to_existing_atom(field), value)}
+  end
+
   @impl true
   def handle_event("update_setting", %{"field" => field, "setting_value" => value}, socket) do
     field_atom = String.to_existing_atom(field)
@@ -197,6 +209,19 @@ defmodule BerrypodWeb.Admin.Theme.Index do
     end
   end
 
+  @impl true
+  def handle_event("update_setting", %{"field" => field} = params, socket)
+      when field in @standalone_settings do
+    value = params[field]
+
+    if value do
+      Settings.put_setting(field, value, "string")
+      {:noreply, assign(socket, String.to_existing_atom(field), value)}
+    else
+      {:noreply, socket}
+    end
+  end
+
   @impl true
   def handle_event("update_setting", %{"field" => field} = params, socket) do
     # For phx-change events from select/input elements, the value comes from the name attribute
@@ -439,6 +464,7 @@ defmodule BerrypodWeb.Admin.Theme.Index do
   attr :page, :atom, required: true
   attr :preview_data, :map, required: true
   attr :theme_settings, :map, required: true
+  attr :site_name, :string, required: true
   attr :logo_image, :any, required: true
   attr :header_image, :any, required: true
   attr :cart_drawer_open, :boolean, default: false

lib/berrypod_web/live/admin/theme/index.html.heex

@@ -74,7 +74,7 @@
           <input
             type="text"
             name="site_name"
-            value={@theme_settings.site_name}
+            value={@site_name}
             placeholder="Your shop name"
             class="admin-input admin-input-lg"
           />
@@ -374,7 +374,7 @@
               type="text"
               name="favicon_short_name"
               value={@theme_settings.favicon_short_name}
-              placeholder={String.slice(@theme_settings.site_name, 0, 12)}
+              placeholder={String.slice(@site_name, 0, 12)}
               maxlength="12"
               class="admin-input admin-input-sm"
             />
@@ -1181,7 +1181,7 @@
             <path d="M7 11V7a5 5 0 0 1 10 0v4"></path>
           </svg>
           <span class="theme-browser-url-text truncate">
-            {@theme_settings.site_name |> String.downcase() |> String.replace(" ", "")}.myshopify.com
+            {@site_name |> String.downcase() |> String.replace(" ", "")}.myshopify.com
           </span>
         </div>
       </div>
@@ -1213,6 +1213,7 @@
           page={@preview_page}
           preview_data={@preview_data}
           theme_settings={@theme_settings}
+          site_name={@site_name}
           logo_image={@logo_image}
           header_image={@header_image}
           cart_drawer_open={@cart_drawer_open}