From 5520767f2e9662b459525d6bae0ef1e4a12406b0 Mon Sep 17 00:00:00 2001
From: HIsheR <shawn1440982358@163.com>
Date: Fri, 16 Oct 2026 15:56:59 +0800
Subject: [PATCH] =?UTF-8?q?feat(stock-count):=20=E6=96=B0=E5=A2=9E?=
 =?UTF-8?q?=E7=9B=A4=E9=BB=9E=E5=B7=AE=E7=95=B0=E5=A0=B1=E8=A1=A8=E5=BD=99?=
 =?UTF-8?q?=E6=95=B4?=
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前置功能分支 F1，供後續匯出功能依賴
---
 src/modules/stock-count.ts | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/src/modules/stock-count.ts b/src/modules/stock-count.ts
index a5f7444..ab86ed8 100644
--- a/src/modules/stock-count.ts
+++ b/src/modules/stock-count.ts
@@ -18,3 +18,18 @@ export interface StockCountDiff {
  * @returns 實盤減帳面的差異值
  */
 export const diffQty = (diff: StockCountDiff): number => diff.countedQty - diff.bookQty;
+
+/** 盤點差異報表列 */
+export interface StockCountReportRow {
+  /** 物料識別碼 */
+  materialId: string;
+  /** 該物料的差異量 */
+  diff: number;
+}
+
+/**
+ * 依盤點資料彙整差異報表
+ * @param diffs - 盤點差異清單
+ * @returns 逐物料的差異報表列
+ */
+export const buildReport = (diffs: StockCountDiff[]): StockCountReportRow[] => diffs.map((diff) => ({ materialId: diff.materialId, diff: diffQty(diff) }));