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-v2/src/views/user/LoginView.vue

@@ -19,8 +19,6 @@
 -->
 <template>
   <div class="auth">
-    <NotifyVant :timeOut="2000" v-model="notify.show" :text="notify.text" :color="'background-color: #DC2626'" />
-
     <PageBar title="ورود" back-to="home" />
 
     <container class="auth__body">
@@ -88,7 +86,7 @@ import { useRoute, useRouter } from 'vue-router'
 import { Form, FormItem, Input } from 'ant-design-vue'
 import Icon from '../../components/icon/Icon.vue'
 import PageBar from '../../components/ui/PageBar.vue'
-import NotifyVant from '../../components/NotifyVant.vue'
+import { toast } from '../../composables/useToast'
 import OtpInput from '../../components/input/OtpInput.vue'
 import { required, mobile as mobileRule } from '../../utils/validator'
 import { useSessionStore } from '../../stores/session'
@@ -100,7 +98,6 @@ const route = useRoute()
 const session = useSessionStore()
 
 const formModel = reactive({ username: undefined as string | undefined })
-const notify = reactive({ show: false, text: 'اطلاعات کاربری در سیستم وجود ندارد.' })
 const body = reactive({
   step: 1,
   loading: false,
@@ -146,8 +143,7 @@ const sendPhone = async () => {
     // 429 = the send throttle (too soon, or too many in the window). Its message
     // is already Persian and user-facing, so show it rather than a generic one.
     const text = e instanceof Error && /\(429\)/.test(e.message) ? extractServerMessage(e) : null
-    notify.text = text ?? 'خطا در ارسال کد. لطفاً دوباره تلاش کنید.'
-    notify.show = true
+    toast.error(text ?? 'خطا در ارسال کد. لطفاً دوباره تلاش کنید.')
   } finally {
     body.loading = false
   }
@@ -177,14 +173,13 @@ const sendToken = async (otpCode: string) => {
     }
     const redirect = typeof route.query.redirect === 'string' ? route.query.redirect : undefined
     await router.push(redirect ?? { name: 'home' })
-    notify.text = 'با موفقیت وارد شدید'
-    notify.show = true
+    toast.success('با موفقیت وارد شدید')
   } catch (e: unknown) {
-    notify.text =
+    toast.error(
       e instanceof Error && /\(429\)/.test(e.message)
         ? (extractServerMessage(e) ?? 'تعداد تلاش‌ها بیش از حد مجاز است.')
-        : 'کد وارد شده صحیح نیست'
-    notify.show = true
+        : 'کد وارد شده صحیح نیست',
+    )
   } finally {
     body.loading = false
   }