complete editor panel reorganisation polish

- fix Site tab not loading theme state on direct URL navigation
- fix nav editor showing "Custom URL" for page links (detect by URL match)
- add Home option to nav page picker
- mark editor-reorganisation plan as complete
- add dynamic-url-customisation and draft-publish-workflow plans

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

lib/berrypod_web/components/shop_components/site_editor.ex

@@ -622,6 +622,17 @@ defmodule BerrypodWeb.ShopComponents.SiteEditor do
   attr :event_prefix, :string, default: "site_"
 
   defp nav_editor(assigns) do
+    # Build a set of known page URLs for quick lookup
+    page_urls =
+      Enum.flat_map(assigns.pages, fn page ->
+        [page.slug, "/#{page.slug}"]
+      end)
+      |> MapSet.new()
+      |> MapSet.put("/collections/all")
+      |> MapSet.put("/")
+
+    assigns = assign(assigns, :page_urls, page_urls)
+
     ~H"""
     <div class="site-editor-nav-list">
       <ul :if={@items != []} class="site-editor-nav-items">
@@ -630,6 +641,10 @@ defmodule BerrypodWeb.ShopComponents.SiteEditor do
           class="site-editor-nav-item"
           data-item-id={item.id}
         >
+          <%
+            # Determine if this item links to a known page (by URL match or page_id)
+            is_page_link = item.page_id != nil or MapSet.member?(@page_urls, item.url)
+          %>
           <form
             class="site-editor-nav-item-form"
             phx-change={@event_prefix <> "update_nav_item"}
@@ -651,10 +666,10 @@ defmodule BerrypodWeb.ShopComponents.SiteEditor do
                 class="admin-select admin-select-sm site-editor-nav-type"
                 aria-label="Link type"
               >
-                <option value="page" selected={item.page_id != nil}>Page</option>
-                <option value="url" selected={item.page_id == nil}>Custom URL</option>
+                <option value="page" selected={is_page_link}>Page</option>
+                <option value="url" selected={not is_page_link}>Custom URL</option>
               </select>
-              <%= if item.page_id != nil or (item.url == "" and @pages != []) do %>
+              <%= if is_page_link or (item.url == "" and @pages != []) do %>
                 <select
                   name={"nav_item[#{item.id}][page_id]"}
                   class="admin-select admin-select-sm site-editor-nav-page"
@@ -662,6 +677,9 @@ defmodule BerrypodWeb.ShopComponents.SiteEditor do
                 >
                   <option value="">Select a page</option>
                   <optgroup label="Pages">
+                    <option value="/" selected={item.url == "/" or item.url == "home"}>
+                      Home
+                    </option>
                     <option
                       :for={page <- @pages}
                       value={page.slug}