feat(paper): 双轨对账前端页——模拟盘菜单新增「双轨对账」:自动配对卡片(策略/实盘#vs影子#/日期/PASS徽标)+四指标卡(笔数全同/均价差bps/持仓逐只/净值月偏差,各带达标徽标)+成交对比表(symbol+side聚合vwap带符号bps,>10标红)+持仓对比表(数量差≠0标红)+日期选择查询;api getReconcilePairs+mock样例(路由须注册在/paper/{aid}前防吞);dev截图验证 [nas]

frontend/src/api/paper.ts

@@ -160,3 +160,60 @@ export async function updatePaper(aid: number, req: PaperUpdateReq): Promise<{ u
   const { data } = await apiClient.put(`/paper/${aid}`, req)
   return data
 }
+
+// ===== 双轨对账（影子柜台 vs 实盘模拟，设计 §8.2）=====
+
+export interface ReconcileTradeRow {
+  symbol: string
+  side: string
+  live_volume: number
+  shadow_volume: number
+  live_vwap: number | null
+  shadow_vwap: number | null
+  price_diff_bps: number | null
+}
+
+export interface ReconcilePositionRow {
+  symbol: string
+  live_volume: number
+  shadow_volume: number
+  volume_diff: number
+}
+
+export interface ReconcileReport {
+  date: string
+  live_account_id: number
+  shadow_account_id: number
+  trades: {
+    live_count: number
+    shadow_count: number
+    count_match: boolean
+    rows: ReconcileTradeRow[]
+    avg_price_diff_bps: number
+    pass_price: boolean
+  }
+  positions: { rows: ReconcilePositionRow[]; match: boolean }
+  nav: {
+    live_total: number | null
+    shadow_total: number | null
+    mtd_deviation_pct: number | null
+    pass_nav: boolean | null
+    live_mtd_return_pct?: number
+    shadow_mtd_return_pct?: number
+    note?: string
+  }
+  passed: boolean
+}
+
+export interface ReconcilePair {
+  live_account_id: number
+  shadow_account_id: number
+  strategy: string
+  report: ReconcileReport
+}
+
+export async function getReconcilePairs(date?: string): Promise<ReconcilePair[]> {
+  const { data } = await apiClient.get<{ pairs: ReconcilePair[] }>(
+    '/paper/reconcile', { params: date ? { date } : {} })
+  return data.pairs
+}