From d2a88894751ba47d7943b7248567ca91e03ed3b2 Mon Sep 17 00:00:00 2001
From: umsangdon <umsangdon@gmail.com>
Date: Sat, 7 Nov 2026 11:19:28 +0900
Subject: [PATCH] fix(est): reject duplicate quantity sheet codes

---
 resources/tester/test_est_quantity_workflow.py | 17 +++++++++++++++++
 tools/est-test/PLAN.md                         |  3 +++
 tools/est-test/native-quantity.cjs             |  8 +++++++-
 3 files changed, 27 insertions(+), 1 deletion(-)

diff --git a/resources/tester/test_est_quantity_workflow.py b/resources/tester/test_est_quantity_workflow.py
index b2017857d..d3a1771db 100644
--- a/resources/tester/test_est_quantity_workflow.py
+++ b/resources/tester/test_est_quantity_workflow.py
@@ -21,6 +21,23 @@ def test_apply_all_quantities_sums_sheets_and_rejects_errors_atomically():
     assert result == {"updated": [5, 4], "rejected": True, "unchanged": True}
 
 
+def test_apply_all_quantities_rejects_duplicate_or_reserved_sheet_codes():
+    result = run(
+        "math",
+        """(()=>{
+      const p=EstNative.empty();p.tables.EstMainDat=[{PkID:1,Code:'A',GN:1}];
+      p.quantities=[{Code:'Q1',formula:'2',TargetKey:'id:1'}];
+      let rejected=0;
+      for(const codes of [['S','S'],['manual'],['']]) {
+        p.quantitySheets=codes.map(Code=>({Code,rows:[],items:[],options:{}}));
+        try{EstQuantity.allTotals(p)}catch{rejected++}
+      }
+      return {rejected,GN:p.tables.EstMainDat[0].GN};
+    })()""",
+    )
+    assert result == {"rejected": 3, "GN": 1}
+
+
 def test_quantity_apply_requires_one_detail_row_per_code():
     result = run(
         "math",
diff --git a/tools/est-test/PLAN.md b/tools/est-test/PLAN.md
index 19f223aa6..955e2547a 100644
--- a/tools/est-test/PLAN.md
+++ b/tools/est-test/PLAN.md
@@ -1,4 +1,7 @@
 ## Codex · EST 독립 테스트 앱 (2026-11-04)
+- [x] 전체 수량 반영 시 중복·예약 산출서 코드 차단 → 중복 합산 방지 시험.
+  - 자체 검증: 중복·빈·예약 코드 차단과 기존 수량 보존 포함 시험 19개 통과.
+
 - [x] 선택 또는 전체 상세 내역 수량 초기화 → 비율·합계 보존·실행 취소 시험.
   - 자체 검증: 설계변경·이력 시험 9개 통과, Edge에서 선택·전체 초기화, 비율 보존과 취소 확인.
 
diff --git a/tools/est-test/native-quantity.cjs b/tools/est-test/native-quantity.cjs
index f5040a0cc..4c4d7a1ff 100644
--- a/tools/est-test/native-quantity.cjs
+++ b/tools/est-test/native-quantity.cjs
@@ -175,7 +175,13 @@ const EstQuantity = (() => {
   }
   function allTotals(project) {
     const combined = new Map();
-    for (const selected of ["manual", ...(project.quantitySheets || []).map((sheet) => sheet.Code)])
+    const codes = (project.quantitySheets || []).map((sheet) => sheet.Code);
+    if (
+      codes.some((code) => typeof code !== "string" || !code || code === "manual") ||
+      new Set(codes).size !== codes.length
+    )
+      throw Error("수량산출서 코드가 없거나 중복됩니다.");
+    for (const selected of ["manual", ...codes])
       for (const [index, value] of totals(project, selected, true))
         combined.set(index, (combined.get(index) || 0) + value);
     if (!combined.size) throw Error("연결할 내역코드를 먼저 입력하세요.");