fix position size

src/core/trend-engine.ts

@@ -214,9 +214,13 @@ export class TrendEngine {
       try {
         await this.exchange.cancelAllOrders({ symbol: this.config.symbol });
       } catch (err) {
+        if (isUnknownOrderError(err)) {
+          this.tradeLog.push("order", "撤单时部分订单已不存在，忽略");
+        } else {
           this.tradeLog.push("error", `撤销挂单失败: ${String(err)}`);
         }
       }
+    }
     if (this.lastPrice > currentSma && currentPrice < currentSma) {
       await this.submitMarketOrder("SELL", currentPrice, "下穿SMA30，市价开空");
     } else if (this.lastPrice < currentSma && currentPrice > currentSma) {
@@ -327,7 +331,7 @@ export class TrendEngine {
           this.timers,
           this.pending,
           direction === "long" ? "SELL" : "BUY",
-          this.config.tradeAmount,
+          Math.abs(position.positionAmt),
           (type, detail) => this.tradeLog.push(type, detail)
         );
         this.tradeLog.push("close", `止损平仓: ${direction === "long" ? "SELL" : "BUY"}`);
@@ -350,6 +354,8 @@ export class TrendEngine {
     lastPrice: number
   ): Promise<void> {
     try {
+      const position = getPosition(this.accountSnapshot, this.config.symbol);
+      const quantity = Math.abs(position.positionAmt) || this.config.tradeAmount;
       await placeStopLossOrder(
         this.exchange,
         this.config.symbol,
@@ -359,7 +365,7 @@ export class TrendEngine {
         this.pending,
         side,
         stopPrice,
-        this.config.tradeAmount,
+        quantity,
         lastPrice,
         (type, detail) => this.tradeLog.push(type, detail)
       );

src/ui/TrendApp.tsx

@@ -77,7 +77,7 @@ export function TrendApp({ onExit }: TrendAppProps) {
     );
   }
 
-  const { position, tradeLog, openOrders, trend, ready, lastPrice, sma30 } = snapshot;
+  const { position, tradeLog, openOrders, trend, ready, lastPrice, sma30, sessionVolume } = snapshot;
   const hasPosition = Math.abs(position.positionAmt) > 1e-5;
   const lastLogs = tradeLog.slice(-5);
   const sortedOrders = [...openOrders].sort((a, b) => (Number(b.updateTime ?? 0) - Number(a.updateTime ?? 0)) || Number(b.orderId) - Number(a.orderId));
@@ -132,7 +132,7 @@ export function TrendApp({ onExit }: TrendAppProps) {
             累计交易次数: {snapshot.totalTrades} ｜ 累计收益: {formatNumber(snapshot.totalProfit, 4)} USDT
           </Text>
           <Text>
-            累计成交量: {formatNumber(snapshot.sessionVolume, 2)} USDT
+            累计成交量: {formatNumber(sessionVolume, 2)} USDT
           </Text>
           {snapshot.lastOpenSignal.side ? (
             <Text color="gray">