refactor: rename SKLogin component to PageLogin and update references

src/views/Login.vue

@@ -1,5 +1,5 @@
 <template>
-  <SKLogin
+  <PageLogin
     :announcement-board="announcementBoard"
     :branding="branding"
     :form="form"
@@ -57,7 +57,7 @@ import { computed, onMounted, ref } from 'vue'
 import { useI18n } from 'vue-i18n'
 import { useRoute, useRouter } from 'vue-router'
 import HyakkaouAcademyImage from '@/assets/logo.png'
-import SKLogin from '@/components/SKLogin.vue'
+import PageLogin from '@/components/PageLogin.vue'
 import { useAuthStore } from '@/stores/auth'
 import {
   type LoginAnnouncementListItem,
@@ -126,7 +126,7 @@ const dialogTitle = ref('')
 const dialogMessage = ref('')
 const announcementDialogVisible = ref(false)
 
-// 內容組合（傳入 SKLogin）
+// 內容組合（傳入 PageLogin）
 const branding = computed(() => ({
   title: title.value,
   organization: organization.value,