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