add settings editor component for unified on-site editing

Phase 3b of unified editing mode. The Settings tab now shows
context-specific forms: custom pages get editable title, slug,
meta, visibility and nav options; system pages get read-only info
with links to admin; product/collection pages show provider info.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

lib/berrypod_web/page_renderer.ex

@@ -112,6 +112,12 @@ defmodule BerrypodWeb.PageRenderer do
         theme_editor_presets={Map.get(assigns, :theme_editor_presets, [])}
         theme_editor_customise_open={Map.get(assigns, :theme_editor_customise_open, false)}
         site_name={Map.get(assigns, :site_name, "")}
+        product={assigns[:product]}
+        collection_title={assigns[:collection_title]}
+        live_action={assigns[:live_action]}
+        settings_form={Map.get(assigns, :settings_form)}
+        settings_dirty={Map.get(assigns, :settings_dirty, false)}
+        settings_save_status={Map.get(assigns, :settings_save_status, :idle)}
       />
     </.editor_sheet>
     """
@@ -138,6 +144,12 @@ defmodule BerrypodWeb.PageRenderer do
   attr :theme_editor_presets, :list, default: []
   attr :theme_editor_customise_open, :boolean, default: false
   attr :site_name, :string, default: ""
+  attr :product, :map, default: nil
+  attr :collection_title, :string, default: nil
+  attr :live_action, :atom, default: nil
+  attr :settings_form, :map, default: nil
+  attr :settings_dirty, :boolean, default: false
+  attr :settings_save_status, :atom, default: :idle
 
   defp editor_panel_content(%{editor_active_tab: :page} = assigns) do
     ~H"""
@@ -174,7 +186,15 @@ defmodule BerrypodWeb.PageRenderer do
 
   defp editor_panel_content(%{editor_active_tab: :settings} = assigns) do
     ~H"""
-    <.settings_editor_content page={@page} site_name={@site_name} />
+    <BerrypodWeb.ShopComponents.SettingsEditor.settings_editor
+      page={@page}
+      product={@product}
+      collection_title={@collection_title}
+      live_action={@live_action}
+      settings_form={@settings_form}
+      settings_dirty={@settings_dirty}
+      settings_save_status={@settings_save_status}
+    />
     """
   end
 
@@ -198,37 +218,6 @@ defmodule BerrypodWeb.PageRenderer do
     """
   end
 
-  # Settings editor content - shows page/shop settings
-  attr :page, :map, default: nil
-  attr :site_name, :string, default: ""
-
-  defp settings_editor_content(assigns) do
-    ~H"""
-    <div class="editor-settings-content">
-      <%= if @page do %>
-        <div class="theme-section">
-          <label class="theme-section-label">Page</label>
-          <p class="admin-text-secondary">{@page.title}</p>
-        </div>
-        <div class="theme-section">
-          <p class="admin-text-secondary">
-            Page settings like SEO, visibility, and slug editing coming soon.
-            For now, <a href="/admin/pages" class="admin-link">manage pages in admin</a>.
-          </p>
-        </div>
-      <% else %>
-        <div class="theme-section">
-          <p class="admin-text-secondary">
-            This page doesn't have editable settings.
-            <a href="/admin/settings" class="admin-link">Shop settings</a>
-            can be changed in admin.
-          </p>
-        </div>
-      <% end %>
-    </div>
-    """
-  end
-
   # Editor sheet content - the block list and editing controls
   attr :page, :map, default: nil
   attr :editing_blocks, :list, default: nil