revert(Z01): 롤백된 마스터 DB·화면 작업이 dev 로 되들어온 것 걷어냄

- 사용자 「완전히 되돌려」 뒤 dev 를 거쳐 다시 들어온 1-2·1-3·1-4 코드 26 경로를 9629430a 모습으로(고친 17 되돌림 · 새로 생긴 9 지움)
- 대상: Z01_MasterData 17 · main.py · ui_template_locale_b3.ts · resources/tester 의 Z01 시험 7
- 품셈 md·도구는 안 건드림 · 이력 재작성 없음(되돌림 커밋)

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0145cr1DMC5Ft8fouQSXtp69

Z01_MasterData/Z01_MasterData_UI_Page.ts

@@ -15,9 +15,8 @@ import { navigateTo } from "../A00_Common/router";
 import { fetchSessionUser } from "../A06_Login/A06_Login_Api_Fetch";
 import { fetchBaseKinds, fetchMasterTree, type MasterGroup } from "./Z01_MasterData_Api_Fetch";
 import type { ServedKind } from "./Z01_MasterData_UI_Cells";
-import { buildRowsView, type RowsView } from "./Z01_MasterData_UI_Rows";
+import { buildRowsView } from "./Z01_MasterData_UI_Rows";
 import { buildSidePanel } from "./Z01_MasterData_UI_Side";
-import { buildWorkItemView } from "./Z01_MasterData_UI_WorkItem";
 import "./Z01_MasterData_UI_Style.css";
 
 export async function renderZ01MasterData(root: HTMLElement): Promise<void> {
@@ -42,32 +41,12 @@ export async function renderZ01MasterData(root: HTMLElement): Promise<void> {
 }
 
 function buildPage(groups: MasterGroup[], kinds: ServedKind[]): HTMLElement {
-  // 오른쪽은 표 보기 · 공종 편집 둘 중 하나 — 왼쪽에서 누른 쪽만 보임.
-  const rows = buildRowsView();
-  const items = buildWorkItemView();
-  items.root.hidden = true;
-  const swap = (showRows: boolean): void => {
-    rows.root.hidden = !showRows;
-    items.root.hidden = showRows;
-  };
-  const view: RowsView = {
-    root: rows.root,
-    show: (source) => {
-      swap(true);
-      rows.show(source);
-    },
-  };
+  const view = buildRowsView();
   const layout = el("div", { className: "ui-workflow-layout z01-master" });
-  const main = el("main", {
-    className: "ui-workflow-layout__main",
-    children: [rows.root, items.root],
-  });
+  const main = el("main", { className: "ui-workflow-layout__main", children: [view.root] });
   const overlays = createWorkflowOverlays({
     title: L("Z01_MasterData_Title"),
-    optionsContent: buildSidePanel(groups, kinds, view, (axis) => {
-      swap(false);
-      items.show(axis);
-    }),
+    optionsContent: buildSidePanel(groups, kinds, view),
     showProjectName: false,
     onOptionsOpenChange: (isOpen) => layout.classList.toggle("is-options-open", isOpen),
   });