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/NotificationsView.vue

@@ -0,0 +1,51 @@
+<!--
+  New nav destination (bottom nav redesign) — no legacy equivalent and no
+  notifications backend exists in apps/api. Renders the same dashed
+  empty-state pattern used elsewhere (see FavoritesView) rather than
+  fabricating fake notification data.
+-->
+<template>
+  <div class="notif">
+    <PageBar title="اعلان‌ها" back-to="home" />
+
+    <container class="notif__body">
+      <section class="notif__empty">
+        <Icon icon="vuesax-linear:notification" size="26" />
+        <p>اعلانی برای نمایش وجود ندارد.</p>
+      </section>
+    </container>
+  </div>
+</template>
+
+<script setup lang="ts">
+import Icon from '../../components/icon/Icon.vue'
+import PageBar from '../../components/ui/PageBar.vue'
+</script>
+
+<style scoped lang="less">
+.notif {
+  background: @canvas;
+  min-height: 100vh;
+}
+
+.notif__body {
+  padding-top: 76px;
+  padding-bottom: 90px;
+}
+
+.notif__empty {
+  margin-top: 8px;
+  padding: 38px 20px;
+  border: 1px dashed @hairline;
+  border-radius: 18px;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  gap: 10px;
+  color: @inkFaint;
+}
+.notif__empty p {
+  margin: 0;
+  font-size: 12.5px;
+}
+</style>