Serve the home nav link from PocketBase, not a hard-coded copy

Elternbeirat.Web/Components/Layout/MainLayout.razor

@@ -20,10 +20,10 @@
             </label>
 
             <nav class="main-nav">
-                @* A home link that only shows in the collapsed mobile menu. On wide
-                   screens the brand is the home link, so this would be a redundant
-                   entry -- CSS hides it there (see .nav-home-mobile). *@
-                <NavLink class="nav-home-mobile" href="/" Match="NavLinkMatch.All">Start</NavLink>
+                @* The home link comes from PocketBase like every other entry (the
+                   "home" page carries location "header"), so it is rendered by the
+                   loop below -- no separate hard-coded home link, which would show
+                   up twice next to the PocketBase one. *@
                 @foreach (var link in _header)
                 {
                     <NavLink href="@link.Href" Match="@(link.Href == "/" ? NavLinkMatch.All : NavLinkMatch.Prefix)">@link.Title</NavLink>

Elternbeirat.Web/Components/Layout/MainLayout.razor.css

@@ -60,12 +60,10 @@
     gap: 0.25rem 1.25rem;
 }
 
-/* The hamburger button, its state checkbox, and the mobile-only home link are
-   hidden on wide screens; the media query below turns them on for narrow ones.
-   (On wide screens the brand is the home link, so a "Start" entry is redundant.) */
+/* The hamburger button and its state checkbox are hidden on wide screens; the
+   media query below turns them on for narrow ones. */
 .nav-toggle,
-.nav-toggle-label,
-.nav-home-mobile {
+.nav-toggle-label {
     display: none;
 }
 
@@ -177,11 +175,6 @@
         margin-top: 0.5rem;
     }
 
-    /* The mobile-only home link reappears as the first entry in the menu. */
-    .nav-home-mobile {
-        display: block;
-    }
-
     /* Mobile per-link spacing/separators for .main-nav a are in the global app.css
        too, for the same scoped-attribute reason as above. */
 }

Elternbeirat.Web/Features/Layout/NavBuilder.cs

@@ -3,9 +3,9 @@ using Elternbeirat.Contracts;
 namespace Elternbeirat.Web.Features.Layout;
 
 /// <summary>
-/// Builds the header and footer navigation from the public pages. Pages carry a
-/// <see cref="Page.Location"/> ("header"/"footer"/"") and an <see cref="Page.Order"/>;
-/// pages without a location are sub-pages and never appear in a menu.
+/// Builds the header and footer navigation from the public pages. Every page
+/// carries a required <see cref="Page.Location"/> ("header" or "footer") and an
+/// <see cref="Page.Order"/>; this splits them into the two menus, each ordered.
 /// </summary>
 public static class NavBuilder
 {