Refactor navigation and fix UI issues

- Add py-4 to main layout for detail page padding
- Show search widget only on main page (not all catalog pages)
- Add 4 menu items: Search, Catalog, Orders, Seller
- Fix orders page click to navigate to order detail
- Update CatalogPage map positioning for new nav structure
- Add search translation to cabinetNav i18n files

app/layouts/topnav.vue

@@ -23,7 +23,7 @@
     <SubNavigation :section="currentSection" />
 
     <!-- Page content -->
-    <main class="flex-1 flex flex-col min-h-0 px-3 lg:px-6">
+    <main class="flex-1 flex flex-col min-h-0 px-3 lg:px-6 py-4">
       <slot />
     </main>
   </div>
@@ -80,9 +80,9 @@ const currentSection = computed(() => {
   return 'catalog'
 })
 
-// Show search bar on catalog pages
+// Show search bar only on main page
 const showSearch = computed(() => {
-  return currentSection.value === 'catalog'
+  return route.path === '/' || route.path === '/en' || route.path === '/ru'
 })
 
 // Avatar generation