fix: import ref and reactive in dashboard component

Co-authored-by: aider (openai/DeepSeek-V3.2-Thinking) <aider@aider.chat>

inventory-web/src/views/dashboard/index.vue

@@ -63,6 +63,7 @@
 </template>
 
 <script setup lang="ts">
+import { ref, reactive } from 'vue'
 import { useRouter } from 'vue-router'
 // 1. 引入 User Store
 import { useUserStore } from '@/stores/user'