Merge origin/sub_laptop_5 into sub_laptop_8 — PLAN 701 · B09 껍데기 겹침 양쪽 살림(띠 위 · 표 · 펼침 · 안내)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

B09_Estimation/B09_Estimation_UI_Shell.ts

@@ -15,6 +15,7 @@ import "./B09_Estimation_UI_Page.css";
 import { API_BASE_URL } from "@config/config_frontend";
 import { createWorkflowLayout } from "@ui/ui_template_workflow_layout";
 import { createText } from "@ui/ui_template_text";
+import { createBanner } from "@ui/ui_template_banner";
 import {
   createButton,
   hideLoadingOverlay,
@@ -41,7 +42,7 @@ import { closePopups, openRowPopup } from "./B09_Estimation_UI_Popup";
 import {
   DRAFT,
   rowIndex,
-  TABS,
+  unfinished,
   type Link,
   type TabContext,
   type TabId,
@@ -127,7 +128,7 @@ export function renderB09Estimation(root: HTMLElement): void {
   let payload: Row | null = null;
   let user: Row = {};
   let sheets: Row = {};
-  let current: TabId = TABS[0][0];
+  let current: TabId = "bill"; // 701-2 첫 화면 = 설계내역서(빈 원가계산서 아님)
 
   // 181-1 위 탭(md) · 아래 탭(sm) 두 줄 — 줄 그리기 = `…_UI_TabBar`
   const bars = createTabBars((tab) => show(tab));
@@ -266,7 +267,9 @@ export function renderB09Estimation(root: HTMLElement): void {
     if (level && hint) hint.textContent = `${level.guide.textContent} · ${hint.textContent}`;
     const foot = hint ?? level?.guide;
     const fold = bill?.fold?.(table.root); // 702-1 줄 펼침 = 표 아래
-    panel.replaceChildren(table.root, ...(fold ? [fold] : []), ...(foot ? [foot] : []));
+    // 701-3 띠(원가계산서 「빈 줄 n · 미완성」) = 표 위
+    const banner = spec.banner ? [createBanner({ tone: "warning", text: spec.banner })] : [];
+    panel.replaceChildren(...banner, table.root, ...(fold ? [fold] : []), ...(foot ? [foot] : []));
     if (at >= 0) requestAnimationFrame(() => table.focusRow(at, false)); // 스크롤만(표시 = 빨강)
   };
 
@@ -311,6 +314,7 @@ export function renderB09Estimation(root: HTMLElement): void {
       ? run("/estimation", "PUT", "원가 사용자 값을 저장했습니다.", { user })
       : Promise.resolve(true);
   DRAFT.save = saveChanged; // 초안 [인쇄 미리보기] = 저장 뒤 이동(506-3)
+  DRAFT.blocked = () => (payload ? unfinished(sheets) : null); // 701-3 인쇄 · 확정 = 빈 줄 0
   const refresh = createButton({
     label: "업데이트",
     variant: "ghost",
@@ -370,6 +374,8 @@ export function renderB09Estimation(root: HTMLElement): void {
   left.addEventListener("ui-step-nav", (event) => {
     if ((event as CustomEvent<number>).detail !== 1 || !goNext || !projectId) return;
     event.stopPropagation();
+    const why = DRAFT.blocked?.();
+    if (why) return void showToast(why, "warning"); // 701-3 확정 = 빈 줄 0 일 때만
     void moveStage(projectId, goNext, [
       { name: "원가 저장", run: saveChanged },
       {