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/views/user/DashboardView.vue

@@ -48,6 +48,7 @@
       </div>
     </header>
 
+    <PullRefresh v-model="refreshing" @refresh="onRefresh">
     <container class="dash__body">
       <!-- Signed in: real position from GET /customers/:id -->
       <template v-if="customer">
@@ -117,6 +118,7 @@
         <RateStrip :quote="goldPrice" />
       </section>
     </container>
+    </PullRefresh>
 
     <DialogVant :timeOut="-1" v-model:show="data.notify" :closeOnClickOverlay="true">
       <template v-slot:img>
@@ -150,6 +152,7 @@
 <script setup lang="ts">
 import { computed, onMounted, reactive, ref } from 'vue'
 import { useRouter } from 'vue-router'
+import { PullRefresh } from 'vant'
 import Icon from '../../components/icon/Icon.vue'
 import SectionHead from '../../components/home/SectionHead.vue'
 import RateStrip from '../../components/home/RateStrip.vue'
@@ -165,6 +168,7 @@ const session = useSessionStore()
 
 const customer = ref<CustomerDetail | null>(null)
 const goldPrice = ref<GoldPriceQuote | null>(null)
+const refreshing = ref(false)
 
 // The ledger stores the gram position as a signed figure — positive means the
 // customer owes gold. Labelled the same way AccountStrip does on the home
@@ -201,7 +205,7 @@ function logOut() {
   router.push({ name: 'home' })
 }
 
-onMounted(async () => {
+async function loadDashboard() {
   if (session.customerId) {
     customer.value = await api.getCustomer(session.customerId)
   }
@@ -210,7 +214,14 @@ onMounted(async () => {
   } catch {
     goldPrice.value = null
   }
-})
+}
+
+async function onRefresh() {
+  await loadDashboard()
+  refreshing.value = false
+}
+
+onMounted(loadDashboard)
 </script>
 
 <style scoped lang="less">
@@ -220,8 +231,10 @@ onMounted(async () => {
 }
 
 .dash__bar {
-  position: sticky;
+  position: fixed;
   top: 0;
+  left: 0;
+  right: 0;
   z-index: 20;
   background: rgba(255, 255, 255, 0.88);
   backdrop-filter: blur(14px);
@@ -269,7 +282,7 @@ onMounted(async () => {
 }
 
 .dash__body {
-  padding-top: 16px;
+  padding-top: 76px;
   padding-bottom: 90px;
 }