Fix navigation layout and search behavior

- Reorder topnav components: search bar before submenu
- GlobalSearchBar: use page navigation instead of dropdowns
- Remove icons from MainNavigation and SubNavigation
- Create ListMapLayout universal component for list+map pages
- Migrate catalog pages (offers, suppliers, hubs) to ListMapLayout

app/layouts/topnav.vue

@@ -16,12 +16,12 @@
       @switch-team="switchToTeam"
     />
 
-    <!-- Sub Navigation (section-specific tabs) -->
-    <SubNavigation :section="currentSection" />
-
     <!-- Global Search Bar -->
     <GlobalSearchBar v-if="showSearch" class="border-b border-base-300" />
 
+    <!-- Sub Navigation (section-specific tabs) -->
+    <SubNavigation :section="currentSection" />
+
     <!-- Page content -->
     <main class="flex-1 flex flex-col min-h-0 px-3 lg:px-6">
       <slot />