refactor(ui): replace modal dialogs with toast/sheet components

Remove DialogVant/NotifyVant and add Toast and Sheet components with
useToast, useReveal, and usePageTransition composables. Rework
Navigation, RegisterView, and styles across both apps; rebuild dist assets.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

apps/user-app/src/components/product/ProductCard.vue

@@ -161,7 +161,7 @@ const wageLabel = computed(() => {
   font-size: 10px;
   font-weight: 700;
   color: #fff;
-  background: @ink;
+  background: @primary;
 }
 
 .pc__flag--soft {

apps/user-app/src/components/product/SingleProduct.vue

@@ -273,11 +273,6 @@
       </Transition>
     </Teleport>
 
-    <NotifyVant :timeOut="3000" v-model="notify" :color="'background-color: #14161A'">
-      <div class="font-bold text-right mb-2">ثبت سفارش</div>
-      <div>محصول با موفقیت به سبد خرید افزوده شد</div>
-    </NotifyVant>
-
     <DialogVant :timeOut="-1" v-model:show="loginNotify" :closeOnClickOverlay="true">
       <template v-slot:img>
         <img :src="loginDialogImage" alt="" class="opacity-80" />
@@ -301,7 +296,7 @@ import { useRouter } from 'vue-router'
 import Icon from '../icon/Icon.vue'
 import GallerySlider from './GallerySlider.vue'
 import Spinner from '../Spinner.vue'
-import NotifyVant from '../NotifyVant.vue'
+import { toast } from '../../composables/useToast'
 import DialogVant from '../DialogVant.vue'
 import { useProduct, isVariantOrderable } from '../../composables/useProduct'
 import { useProductDetail } from '../../composables/useProductDetail'
@@ -327,7 +322,6 @@ const close = () => {
   if (router.currentRoute.value.name === 'singleProduct') router.back()
 }
 
-const notify = ref(false)
 const loginNotify = ref(false)
 const imageIndex = ref(0)
 const bodyOpen = ref(false)
@@ -484,7 +478,7 @@ const addToCart = () => {
   // Previously the "added to cart" toast fired either way, telling the customer
   // something had been added when nothing had. Kept in step with user-app-v2.
   if (!cart.addToCart(storeProduct.value)) return
-  notify.value = true
+  toast.success('محصول با موفقیت به سبد خرید افزوده شد', { title: 'ثبت سفارش' })
 }
 
 const toggleFav = (e: Event) => {
@@ -732,8 +726,8 @@ onBeforeUnmount(() => {
   transition: border-color 0.18s ease, background 0.18s ease;
 }
 .pd__variant.is-on {
-  background: @ink;
-  border-color: @ink;
+  background: @primary;
+  border-color: @primary;
 }
 .pd__variantImg {
   width: 100%;
@@ -931,7 +925,7 @@ onBeforeUnmount(() => {
   font-weight: 800;
   text-decoration: none;
   color: #fff;
-  background: @ink;
+  background: @primary;
   transition: transform 0.18s ease, opacity 0.18s ease;
 }
 .pd__cta:active {
@@ -942,9 +936,9 @@ onBeforeUnmount(() => {
   opacity: 0.45;
 }
 .pd__cta--ghost {
-  color: @ink;
+  color: @primary;
   background: @canvas;
-  border: 1px solid @ink;
+  border: 1px solid @primary;
 }
 
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