Merge remote-tracking branch 'origin/sub_laptop_3' into sub_laptop_6

# Conflicts:
#	B09_Estimation/B09_Estimation_Router.py
#	B09_Estimation/B09_Estimation_UI_Shell.ts

B09_Estimation/B09_Estimation_UI_Shell.ts

@@ -53,6 +53,7 @@ import {
   buildSumMaterial,
 } from "./B09_Estimation_UI_Tabs_Summary";
 import { buildCost, buildTotal } from "./B09_Estimation_UI_Tabs_Total";
+import { buildSg, buildSgList } from "./B09_Estimation_UI_Tabs_Sangeun";
 
 function L(key: keyof typeof ui_locales): string {
   return ui_locales[key][currentLanguageIndex];
@@ -61,8 +62,6 @@ function L(key: keyof typeof ui_locales): string {
 const LATER: Record<string, string> = {
   dg_list: "일위대가목록표 — 145-2(다른 창)가 들어오면 생김",
   dg: "일위대가표 — 145-2(다른 창)가 들어오면 생김",
-  sg_list: "단가산출근거목록표 — 145-1(다른 창)가 들어오면 생김",
-  sg: "단가산출근거 — 145-1(다른 창)가 들어오면 생김",
 };
 
 const BUILDERS: Partial<Record<TabId, TabBuild>> = {
@@ -81,6 +80,8 @@ const BUILDERS: Partial<Record<TabId, TabBuild>> = {
   sum_labor: buildSumLabor,
   sum_expense: buildSumExpense,
   sum_machine: buildSumMachine,
+  sg_list: buildSgList,
+  sg: buildSg,
 };
 
 async function request<T>(path: string, init: RequestInit = {}): Promise<T> {
@@ -104,11 +105,21 @@ function note(textValue: string): HTMLElement {
   return p;
 }
 
-/** 브라우저 셈 — 서버 짝과 같은 식(조작 중) */
+/** 산근(145-1) = 서버 단독 — 받은 그대로 두는 칸 */
+const SERVER_ONLY = ["sg", "sg_list", "sg_gaps", "sg_notes"] as const;
+
+/** 브라우저 셈 — 서버 짝과 같은 식(조작 중) · 산근은 서버 답 그대로(+ 「연결 없음」) */
 export function computeSheets(payload: Row, user: Row): Row {
-  const sheets = computeEstimation(payload.inputs, user);
-  // 145-4 총괄 · 원가계산서 = 설계내역서 비목 합(145-3 `bill.sums`) + 사용자 요율 · 손입력
-  return { ...sheets, total: computeTotal(sheets.bill?.sums, user.estimate) };
+  const base = computeEstimation(payload.inputs, user);
+  const server: Row = payload.sheets || {};
+  const kept = Object.fromEntries(SERVER_ONLY.map((k) => [k, server[k] ?? []]));
+  return {
+    ...base,
+    ...kept,
+    gaps: [...base.gaps, ...(server.sg_gaps || [])],
+    // 145-4 총괄 · 원가계산서 = 설계내역서 비목 합(145-3 `bill.sums`) + 사용자 요율 · 손입력
+    total: computeTotal(base.bill?.sums, user.estimate),
+  };
 }
 
 export function renderB09Estimation(root: HTMLElement): void {