feat(material): add global floating helper to track latest specification codes with smart grouping

inventory-web/src/layout/index.vue

@@ -5,12 +5,16 @@
     <div class="main-container">
       <AppMain />
     </div>
+
+    <!-- 全局规格连号助手 -->
+    <SpecHelper />
   </div>
 </template>
 
 <script setup lang="ts">
 import Sidebar from './components/Sidebar/index.vue'
 import AppMain from './components/AppMain.vue'
+import SpecHelper from '@/components/SpecHelper/index.vue'
 </script>
 
 <style scoped>