From cdea2ce608bcf4166165d408d6454600f0f042d5 Mon Sep 17 00:00:00 2001
From: kennethcheng <a1478925630@163.com>
Date: Tue, 28 Apr 2026 21:46:28 +0800
Subject: [PATCH] =?UTF-8?q?fix(ledger):=20=E4=BF=AE=E5=A4=8D=E5=B8=81?=
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---
 Memory.md                |  4 ++++
 app/dashboard/page.tsx   | 10 +++-------
 src/actions/portfolio.ts | 21 +++++++++++++++++++++
 3 files changed, 28 insertions(+), 7 deletions(-)

diff --git a/Memory.md b/Memory.md
index 435a012..441a9bf 100644
--- a/Memory.md
+++ b/Memory.md
@@ -66,6 +66,10 @@
 - 修復了 `avgCostFormatted` 的判空邏輯，將 `Big.eq(0)` 修正為 `Big.eq('0')`，確保當 `pos.avgCost` 存在且不為 0 時能正確格式化，不再顯示 `¥-`。
 - 在資產卡片中新增「累計分紅」行，展示 `accumulatedDividendsCny` 數據，保持與其它 CNY 數據一致的 `opacity-50` 樣式。
 
+## 修復幣種符號映射 Bug 與引擎數據擴充 (Task 40)
+- 修復了币种符号映射错乱 Bug：`getCurrencySymbol()` 中 CNY 和 HKD 被错误地映射为 `HK$`，现修正为 USD→$、HKD→HK$、CNY→¥。
+- 在 portfolio 引擎中新增了单资产的流水明细数组：`Position` 接口新增 `transactions` 字段，`getPortfolioPositions()` 按资产名下发排序后的原始交易流水，支持前端展开查看。
+
 ## 持倉引擎 Native 幣種算法重構 (Task 38)
 - 重構底層盈虧引擎，全面轉向 Native 原生幣種計算，新增浮動/累計盈虧及百分比指標。
 - 徹底分離 Native 與 CNY 計算：單隻股票的成本與盈虧全部改用 Native (原幣種) 進行計算。
diff --git a/app/dashboard/page.tsx b/app/dashboard/page.tsx
index f0e9317..2fa46e9 100644
--- a/app/dashboard/page.tsx
+++ b/app/dashboard/page.tsx
@@ -6,13 +6,9 @@ import { SyncButton } from '@/components/assets/sync-button';
 import Big from 'big.js';
 
 function getCurrencySymbol(currency: string): string {
-  switch (currency) {
-    case 'USD': return '$';
-    case 'CNY':
-    case 'HKD': return 'HK$';
-    case 'JPY': return '¥';
-    default: return currency + ' ';
-  }
+  if (currency === 'USD') return '$';
+  if (currency === 'HKD') return 'HK$';
+  return '¥';
 }
 
 function formatNative(value: string, baseCurrency: string): string {
diff --git a/src/actions/portfolio.ts b/src/actions/portfolio.ts
index a9298d6..abd5062 100644
--- a/src/actions/portfolio.ts
+++ b/src/actions/portfolio.ts
@@ -37,6 +37,15 @@ interface Position {
   floatingPnlPercent: string;
   cumulativePnlNative: string;
   cumulativePnlPercent: string;
+  transactions: TransactionRecord[];
+}
+
+interface TransactionRecord {
+  txType: string;
+  quantity: string;
+  price: string;
+  txCurrency: string;
+  executedAt: Date | null;
 }
 
 interface RawRate {
@@ -174,6 +183,8 @@ export async function getPortfolioPositions(): Promise<Position[]> {
     accumulatedDividendsNative: Big;
     // 首次买入日期
     firstBuyDate: Date | null;
+    // 原始流水明细
+    transactions: TransactionRecord[];
   }>();
 
   for (const tx of allTransactions) {
@@ -198,6 +209,7 @@ export async function getPortfolioPositions(): Promise<Position[]> {
         accumulatedDividendsCny: new Big('0'),
         accumulatedDividendsNative: new Big('0'),
         firstBuyDate: null,
+        transactions: [],
       });
     }
 
@@ -265,6 +277,14 @@ export async function getPortfolioPositions(): Promise<Position[]> {
     if (tx.assetLatestPrice) {
       holding.latestPrice = tx.assetLatestPrice;
     }
+
+    holding.transactions.push({
+      txType: tx.txType,
+      quantity: tx.quantity,
+      price: tx.price,
+      txCurrency: tx.txCurrency,
+      executedAt: tx.executedAt,
+    });
   }
 
   const today = getTodayInShanghai();
@@ -373,6 +393,7 @@ export async function getPortfolioPositions(): Promise<Position[]> {
       floatingPnlPercent: floatingPnlPercent.toString(),
       cumulativePnlNative: cumulativePnlNative.toString(),
       cumulativePnlPercent: cumulativePnlPercent.toString(),
+      transactions: holding.transactions,
     });
   }