From 77887c1bf46bbf366e886ef65bdf2503e4c8e8fc Mon Sep 17 00:00:00 2001
From: umsangdon <umsangdon@gmail.com>
Date: Mon, 21 Sep 2026 19:29:51 +0900
Subject: [PATCH] =?UTF-8?q?fix(M01):=20=EC=9E=AC=EB=A3=8C=20=EC=BB=A8?=
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Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PAdA5ThqmtVSsbzjusk1cJ
---
 M01_MasterData/M01_MasterData_UI_Side.ts | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/M01_MasterData/M01_MasterData_UI_Side.ts b/M01_MasterData/M01_MasterData_UI_Side.ts
index d2df4b16..eb9dc421 100644
--- a/M01_MasterData/M01_MasterData_UI_Side.ts
+++ b/M01_MasterData/M01_MasterData_UI_Side.ts
@@ -153,6 +153,8 @@ export function buildSide(
   const runs = new Map<string, () => void>();
   let restoring = false;
   let onPicked = (): void => {};
+  /** 컨테이너별로 마지막에 고른 거름 줄 — 다시 펼칠 때 그 목록을 되살림(재료는 파일이 둘) */
+  const lastRun = new Map<Group, string>();
 
   const setActive = (id: string | null): void => {
     for (const [key, button] of buttons) button.classList.toggle("is-active", key === id);
@@ -235,6 +237,7 @@ export function buildSide(
         /* 기억 못 해도 거름은 됨 */
       }
       setActive(a.id);
+      lastRun.set(a.id.split(/[|\n]/)[0] as Group, a.id);
       a.onPick(
         sub.select.value,
         d,
@@ -405,12 +408,12 @@ export function buildSide(
         onOpen({ group, file: one, sub: "", detail: "", label: L(GROUP_TITLE[group]) });
       });
     }
-    if (FILTERED.includes(group)) {
+    if (FILTERED.includes(group) || group === "재료") {
       root.querySelector(".ui-collapsible__title")?.addEventListener("click", () => {
         if (!root.classList.contains("is-collapsed")) return; // 닫을 때는 그대로 둠
         restoring = true;
         try {
-          runs.get(`${group}|`)?.();
+          runs.get(lastRun.get(group) ?? (group === "재료" ? "" : `${group}|`))?.();
         } finally {
           restoring = false;
         }