feat: 图生图功能

feat: 参考图片(图生图)选择器
ui: 文件上传(预留) composable
ui: 登录过期提示
ui: 调整部分 ui

app.vue

@@ -1,8 +1,23 @@
 <script setup lang="ts">
+import ModalAuthentication from '~/components/ModalAuthentication.vue';
+
+const toast = useToast()
+const router = useRouter()
+const modal = useModal()
 const loginState = useLoginState()
 
 onMounted(() => {
-  loginState.checkSession()
+  loginState.checkSession().then(res => {
+    if (!res) {
+      toast.add({
+        title: '登录失效',
+        description: '登录已过期，请重新登录',
+        color: 'red',
+        icon: 'i-tabler-alert-triangle',
+      })
+      modal.open(ModalAuthentication)
+    }
+  })
 })
 </script>