Add show_in_nav option for categories in top menu

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

resources/views/admin/categories/form.blade.php

@@ -43,6 +43,10 @@
                 <input type="checkbox" name="active" id="active" value="1" {{ old('active', $category->active ?? true) ? 'checked' : '' }}>
                 <label for="active" class="text-sm">Aktiv</label>
             </div>
+            <div class="flex items-end gap-2 pb-2">
+                <input type="checkbox" name="show_in_nav" id="show_in_nav" value="1" {{ old('show_in_nav', $category->show_in_nav ?? false) ? 'checked' : '' }}>
+                <label for="show_in_nav" class="text-sm">Im Top-Menü anzeigen</label>
+            </div>
         </div>
 
         <div class="flex gap-3 pt-2">

resources/views/layouts/shop.blade.php

@@ -33,6 +33,11 @@
                            ->orderBy('nav_sort')
                            ->orderBy('title')
                            ->get();
+        $navCategories = \App\Models\Category::whereNull('parent_id')
+                           ->where('active', true)
+                           ->where('show_in_nav', true)
+                           ->orderBy('sort_order')
+                           ->get();
     @endphp
 
     {{-- Header: Logo-Leiste --}}
@@ -57,6 +62,13 @@
                    class="px-3 py-2 rounded-lg text-sm font-medium text-gray-700 hover:bg-blue-50 hover:text-blue-700 transition">
                     Alle Produkte
                 </a>
+                @foreach($navCategories as $navCat)
+                <a href="{{ route('shop.category', $navCat->slug) }}"
+                   class="px-3 py-2 rounded-lg text-sm font-medium text-gray-700 hover:bg-blue-50 hover:text-blue-700 transition
+                          {{ request()->route('slug') === $navCat->slug ? 'bg-blue-50 text-blue-700' : '' }}">
+                    {{ $navCat->name }}
+                </a>
+                @endforeach
                 @foreach($navPages as $navPage)
                 <a href="{{ route('page', $navPage->slug) }}"
                    class="px-3 py-2 rounded-lg text-sm font-medium text-gray-700 hover:bg-blue-50 hover:text-blue-700 transition