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/Spinner.vue

@@ -1,6 +1,6 @@
 <!-- Ported from legacy henza_pwa/src/components/spinner.vue -->
 <template>
-  <Spin :spinning="spinning" :tip="tip" :size="(size as 'small' | 'default' | 'large')" :delay="delay" class="!max-h-screen !fixed">
+  <Spin :spinning="spinning" :tip="tip" :size="(size as 'small' | 'default' | 'large')" :delay="delay" :class="fixed ? '!max-h-screen !fixed' : ''">
     <template #indicator>
       <svg v-if="!indicator" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 114.39 137.84">
         <g>
@@ -43,8 +43,9 @@ withDefaults(
     delay?: number
     spinning: boolean
     indicator?: boolean
+    fixed?: boolean
   }>(),
-  { size: 'large' },
+  { size: 'large', fixed: true },
 )
 </script>