feat: 试用过程中的细节优化

studio/src/pages/trial/TrialExportPanel.tsx

@@ -29,7 +29,7 @@ interface RegisterRecord {
     sellingPriceReserved: string; // 划线价 ¥（v1 预留价位）
     sellingPriceRub: string;
     sellingPriceRubReserved: string; // 划线价 ₽
-    lineMultiplier: number; // 划线价倍数 %（v1 discountReserve 位）
+    lineDiscountRate: number; // 划线折扣率 %
     exchangeRate: string;
     logisticsFee: string;
     receivedPrice: string;
@@ -95,7 +95,7 @@ function toRecord(product: ProductDetail): RegisterRecord | null {
         sellingPriceReserved: f(pr.linePriceCny),
         sellingPriceRub: f(pr.sellingPriceRub),
         sellingPriceRubReserved: f(pr.linePriceRub),
-        lineMultiplier: pr.lineMultiplier ?? 100,
+        lineDiscountRate: pr.lineDiscountRate ?? 50,
         exchangeRate: pr.fxRate != null ? Number(pr.fxRate).toFixed(4) : '',
         logisticsFee: f(pr.logisticsFee),
         receivedPrice: f(pr.receivedPrice),