Redesign orders/cart/search flows and fix RTL/auth edge cases in user-app

- Fix silent redirect-to-home for unauthenticated users on protected routes;
  now redirects to login with a return path
- Restyle OrderCard, SearchInput, Filters, DropDown, and product card image
  sizing/centering to match the app's LESS-token design language
- Fix ant-design Slider handle placement/drag under RTL and seed a valid
  default range so handles actually render
- Fix chip-row edge padding and top spacing across Orders/Cart/Search lists
- Add pull-to-refresh to the dashboard and fix its header/padding to match
  the fixed PageBar pattern
- Remove the floating WhatsApp button from index.html

apps/user-app/src/components/home/ShowcaseCard.vue

@@ -64,6 +64,9 @@ const wageLabel = computed(() => {
 .card__art {
   position: relative;
   aspect-ratio: 1 / 1;
+  display: flex;
+  align-items: center;
+  justify-content: center;
   background: @hairlineSoft;
 }
 
@@ -73,8 +76,11 @@ const wageLabel = computed(() => {
 
 .card__art img {
   width: 100%;
+  max-width: 200px;
   height: 100%;
-  object-fit: cover;
+  max-height: 200px;
+  object-fit: contain;
+  object-position: center;
   display: block;
 }