refactor: 整理组件目录结构

- TransactionDetail, CategoryBillPopup 移入 Transaction/
- BudgetTypeTabs 移入 Budget/
- GlassBottomNav, ModernEmpty 移入 Global/
- Icon, IconSelector, ClassifySelector 等 8 个通用组件移入 Common/
- 更新所有相关引用路径

Web/src/views/BillAnalysisView.vue

@@ -137,7 +137,7 @@ import { ref, nextTick } from 'vue'
 import { useRouter } from 'vue-router'
 import { showToast, showLoadingToast, closeToast } from 'vant'
 import { getConfig, setConfig } from '@/api/config'
-import PopupContainerV2 from '@/components/PopupContainerV2.vue'
+import PopupContainerV2 from '@/components/Common/PopupContainerV2.vue'
 
 const router = useRouter()
 const userInput = ref('')