feat(adminfinance): 新增预计收入指标并优化明细查询性能

- 财务看板增加预计收入与待结算订单数统计
- 明细列表 COUNT 改为仅扫描 rental_orders 主表，避免 5-JOIN 子查询
- 统一前后端结算差异判定阈值为常量 5 分
- 修复日期选择器使用 UTC 日期导致东八区凌晨偏移前一天的问题

frontend/src/features/admin/api/adminFinance.ts

@@ -1,6 +1,10 @@
 import { apiClient } from '@/shared/api/client'
 import type { ApiResponse, PaginatedResult } from '@/shared/types/types'
 
+// 结算差异判定阈值(分)。号主应得与实际入账差额绝对值达到此值即标红。
+// 与后端 settlementDiffThresholdCent 保持一致,改口径时两端同步。
+export const SETTLEMENT_DIFF_THRESHOLD_CENT = 5
+
 export interface FinanceSummary {
   total_flow_amount_cent: number
   total_refund_amount_cent: number
@@ -10,10 +14,12 @@ export interface FinanceSummary {
   owner_should_income_amount_cent: number
   owner_wallet_income_amount_cent: number
   settlement_diff_amount_cent: number
+  estimated_income_amount_cent: number
   successful_pay_count: number
   successful_refund_count: number
   pending_refund_count: number
   settled_order_count: number
+  pending_settle_order_count: number
   financial_exception_count: number
 }
 
@@ -27,6 +33,7 @@ export interface FinanceDailyItem {
   owner_should_income_amount_cent: number
   owner_wallet_income_amount_cent: number
   settlement_diff_amount_cent: number
+  estimated_income_amount_cent: number
   successful_pay_count: number
   successful_refund_count: number
   pending_refund_count: number

frontend/src/features/admin/views/AdminFinanceDashboardView.vue

@@ -4,11 +4,12 @@ import { computed, onMounted, reactive, ref } from 'vue'
 
 import {
   fetchFinanceDashboard,
+  SETTLEMENT_DIFF_THRESHOLD_CENT,
   type FinanceDashboard,
   type FinanceDailyItem,
 } from '@/features/admin/api/adminFinance'
 import { formatCentWithSymbol } from '@/shared/utils/money'
-import { formatDateTime } from '@/shared/utils/time'
+import { formatDateTime, formatInputDate } from '@/shared/utils/time'
 
 const loading = ref(false)
 const dashboard = ref<FinanceDashboard | null>(null)
@@ -44,16 +45,14 @@ function defaultEndDate() {
   return formatInputDate(new Date())
 }
 
-function formatInputDate(date: Date) {
-  return date.toISOString().slice(0, 10)
-}
-
 function diffType(value: number) {
-  return Math.abs(Number(value || 0)) >= 5 ? 'danger' : 'success'
+  return Math.abs(Number(value || 0)) >= SETTLEMENT_DIFF_THRESHOLD_CENT ? 'danger' : 'success'
 }
 
 function rowDiffClass(row: FinanceDailyItem) {
-  return Math.abs(Number(row.settlement_diff_amount_cent || 0)) >= 5 ? 'amount-danger' : ''
+  return Math.abs(Number(row.settlement_diff_amount_cent || 0)) >= SETTLEMENT_DIFF_THRESHOLD_CENT
+    ? 'amount-danger'
+    : ''
 }
 </script>
 
@@ -130,6 +129,11 @@ function rowDiffClass(row: FinanceDailyItem) {
         </strong>
         <small>{{ dashboard.summary.financial_exception_count }} 个异常订单</small>
       </div>
+      <div class="metric-card">
+        <span>预计收入</span>
+        <strong>{{ moneyCent(dashboard.summary.estimated_income_amount_cent) }}</strong>
+        <small>{{ dashboard.summary.pending_settle_order_count }} 个待结算订单</small>
+      </div>
     </div>
 
     <el-table v-loading="loading" class="table-panel" :data="dailyItems">
@@ -157,11 +161,17 @@ function rowDiffClass(row: FinanceDailyItem) {
           <span :class="rowDiffClass(row)">{{ moneyCent(row.settlement_diff_amount_cent) }}</span>
         </template>
       </el-table-column>
-      <el-table-column label="收款/退款/结算" min-width="170">
-        <template #default="{ row }">
-          {{ row.successful_pay_count }} / {{ row.successful_refund_count }} /
-          {{ row.settled_order_count }}
-        </template>
+      <el-table-column label="预计收入" width="130">
+        <template #default="{ row }">{{ moneyCent(row.estimated_income_amount_cent) }}</template>
+      </el-table-column>
+      <el-table-column label="销售数量" width="110">
+        <template #default="{ row }">{{ row.successful_pay_count }}</template>
+      </el-table-column>
+      <el-table-column label="退款数量" width="110">
+        <template #default="{ row }">{{ row.successful_refund_count }}</template>
+      </el-table-column>
+      <el-table-column label="结算数量" width="110">
+        <template #default="{ row }">{{ row.settled_order_count }}</template>
       </el-table-column>
     </el-table>
 

frontend/src/features/admin/views/AdminFinanceDetailsView.vue

@@ -2,11 +2,15 @@
 import { Search } from '@element-plus/icons-vue'
 import { onMounted, reactive, ref } from 'vue'
 
-import { fetchFinanceDetails, type FinanceDetail } from '@/features/admin/api/adminFinance'
+import {
+  fetchFinanceDetails,
+  SETTLEMENT_DIFF_THRESHOLD_CENT,
+  type FinanceDetail,
+} from '@/features/admin/api/adminFinance'
 import { adminPath } from '@/shared/utils/adminPath'
 import { formatCentWithSymbol } from '@/shared/utils/money'
 import { orderStatusLabel } from '@/shared/utils/statusLabels'
-import { formatDateTime } from '@/shared/utils/time'
+import { formatDateTime, formatInputDate } from '@/shared/utils/time'
 import AdminTablePagination from '../components/AdminTablePagination.vue'
 
 const loading = ref(false)
@@ -102,10 +106,6 @@ function defaultStartDate() {
 function defaultEndDate() {
   return formatInputDate(new Date())
 }
-
-function formatInputDate(date: Date) {
-  return date.toISOString().slice(0, 10)
-}
 </script>
 
 <template>
@@ -236,7 +236,10 @@ function formatInputDate(date: Date) {
           }}</span>
           <span
             class="amount-text amount-cell"
-            :class="{ 'amount-danger': Math.abs(row.settlement_diff_amount_cent) >= 5 }"
+            :class="{
+              'amount-danger':
+                Math.abs(row.settlement_diff_amount_cent) >= SETTLEMENT_DIFF_THRESHOLD_CENT,
+            }"
           >
             {{ moneyCent(row.settlement_diff_amount_cent) }}
           </span>