From 593ee198aa70667df93317647fd557f33e2382e3 Mon Sep 17 00:00:00 2001
From: umsangdon <umsangdon@gmail.com>
Date: Fri, 16 Oct 2026 11:39:56 +0900
Subject: [PATCH 1/3] =?UTF-8?q?refactor(=EC=A2=85=EB=8B=A8=EB=B3=B4?=
 =?UTF-8?q?=EA=B8=B0):=20345-4=20=EC=A0=95=EB=A6=AC=20=E2=80=94=20?=
 =?UTF-8?q?=EB=B9=88=20saveCorridorIfDirty=20=EC=99=80=20=EB=B6=80?=
 =?UTF-8?q?=EB=A5=B4=EB=8A=94=20=EA=B3=B3=20=EC=A7=80=EC=9B=80=20=C2=B7=20?=
 =?UTF-8?q?B05=20=EB=93=B1=EA=B3=A0=EC=84=A0=20=EC=A3=BC=EC=86=8C=20?=
 =?UTF-8?q?=EB=91=90=20=EA=B3=B3=20=3D=20contourAssetUrl(=EB=AF=B8?=
 =?UTF-8?q?=EB=A6=AC=20=EB=B0=9B=EA=B8=B0=EC=99=80=20=EA=B0=99=EC=9D=80=20?=
 =?UTF-8?q?=ED=8C=8C=EC=9D=BC)?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

- 3D 뷰어 · 노선 편집 바탕 등고선이 같은 주소 한 벌(recalculate=false 붙음 · 보관함 한 칸)
- 시험: test_345_4_contour_one_url 2 · 관련 250 통과

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VmC34fsxxbweEG3RUjs3Mn
---
 A00_Common/design/design_view_profile.ts      |  5 ---
 A00_Common/design/design_view_profile_3d.ts   |  4 +--
 B05_Profile/B05_Profile_UI_Corridor.ts        |  3 --
 B05_Profile/B05_Profile_UI_Page_Actions.ts    |  4 ---
 .../B05_Profile_UI_RouteEdit_Contour.ts       |  6 ++--
 B05_Profile/B05_Profile_UI_Viewer.ts          |  4 +--
 .../tester/test_345_4_contour_one_url.py      | 35 +++++++++++++++++++
 7 files changed, 40 insertions(+), 21 deletions(-)
 create mode 100644 resources/tester/test_345_4_contour_one_url.py

diff --git a/A00_Common/design/design_view_profile.ts b/A00_Common/design/design_view_profile.ts
index 75eb2d58b..0ed5e9664 100644
--- a/A00_Common/design/design_view_profile.ts
+++ b/A00_Common/design/design_view_profile.ts
@@ -53,7 +53,6 @@ import {
   structureAnchorM,
 } from "../../B05_Profile/B05_Profile_Api_Structures";
 import { pipeToFacilityItem } from "../../B05_Profile/B05_Profile_UI_Structures_Panel_Types";
-import { saveCorridorIfDirty } from "../../B05_Profile/B05_Profile_UI_Corridor";
 import {
   profileSaveParts,
   type PageActionContext,
@@ -404,10 +403,6 @@ export async function mountProfileView(
       }
       profilePick.paint();
     },
-    // 보기를 떠나는 자리 = 코리도 영구저장 시점(2026-08-23 사용자 확정) — 이동은 막지 않는다.
-    onHide: () => {
-      if (state.latest?.route?.id) void saveCorridorIfDirty(activeProjectId, state.latest.route.id);
-    },
   });
 
   /** [노선 반영] 끝 — 서버가 배수유역부터 다시 셌고 그 결과가 새 초기값이다. 새로고침 대신 페이지를
diff --git a/A00_Common/design/design_view_profile_3d.ts b/A00_Common/design/design_view_profile_3d.ts
index 96f999fe7..833af8f2e 100644
--- a/A00_Common/design/design_view_profile_3d.ts
+++ b/A00_Common/design/design_view_profile_3d.ts
@@ -7,7 +7,7 @@
 
 import { showToast } from "@ui/ui_template_elements";
 import { updateContourInterval } from "../../B05_Profile/B05_Profile_Api_Fetch";
-import { refreshCorridor, saveCorridorIfDirty } from "../../B05_Profile/B05_Profile_UI_Corridor";
+import { refreshCorridor } from "../../B05_Profile/B05_Profile_UI_Corridor";
 import type { createLatestSource } from "../../B05_Profile/B05_Profile_UI_Page_Latest";
 import { toBounds } from "../../B05_Profile/B05_Profile_UI_Page_Helpers";
 import type { ViewControlCallbacks } from "../../B05_Profile/B05_Profile_UI_Panel_View";
@@ -64,8 +64,6 @@ export function createProfile3d(deps: Profile3dDeps) {
       );
       // 측점 바·라벨·램프도 계획고를 따라 움직여야 한다(2026-08-23 지적 ③).
       deps.sections().renderStationLines(detail);
-      // 만든 것을 **바로 올려 둔다**(2026-09-06) — 다음 진입이 네트워크 없이 선다.
-      void saveCorridorIfDirty(projectId, latest.route.id);
     },
   };
 
diff --git a/B05_Profile/B05_Profile_UI_Corridor.ts b/B05_Profile/B05_Profile_UI_Corridor.ts
index 7bf2963c5..321cd5de3 100644
--- a/B05_Profile/B05_Profile_UI_Corridor.ts
+++ b/B05_Profile/B05_Profile_UI_Corridor.ts
@@ -184,9 +184,6 @@ export async function ensureCorridor(
   return build;
 }
 
-/** 옛 올림 자리 — 3D 길 모형은 서버가 [저장]·[확정] 때 지음(342-2). 부르는 곳이 지워지면 함께 지움. */
-export async function saveCorridorIfDirty(_projectId: string, _routeId: number): Promise<void> {}
-
 /** ③ 사면이 읽을 측점 단면을 얹는다(115-1 · 저장본에는 안 담긴다). */
 function withSections(
   build: CorridorBuildResult | null,
diff --git a/B05_Profile/B05_Profile_UI_Page_Actions.ts b/B05_Profile/B05_Profile_UI_Page_Actions.ts
index 5d6fc7ef8..d4b27c095 100644
--- a/B05_Profile/B05_Profile_UI_Page_Actions.ts
+++ b/B05_Profile/B05_Profile_UI_Page_Actions.ts
@@ -13,7 +13,6 @@ import {
   invalidateSectionDetail,
   saveCachedCrossPatches,
 } from "../B06_Section/B06_Section_Section_Store";
-import { saveCorridorIfDirty } from "./B05_Profile_UI_Corridor";
 import type { createRoutePanel } from "./B05_Profile_UI_Panel";
 import type { createRouteProfilePanel } from "./B05_Profile_UI_Profile_Panel";
 import type { createStructuresBridge } from "./B05_Profile_UI_Page_Structures";
@@ -87,9 +86,6 @@ export function profileSaveParts(ctx: PageActionContext): DesignViewSave {
       // 서버가 종단 정본의 계획선을 다시 썼다 — 공유 캐시를 비워 횡단 보기가 옛 계획선을 못 보게 한다.
       invalidateSectionDetail(projectId);
       ctx.renderLatest(await ctx.loadLatest(true));
-      // 저장 = 코리도 영구저장 시점(2026-08-23) — 실패해도 저장은 성공 처리.
-      const routeId = ctx.latest()?.route?.id;
-      if (routeId) void saveCorridorIfDirty(projectId, routeId);
     },
   };
 }
diff --git a/B05_Profile/B05_Profile_UI_RouteEdit_Contour.ts b/B05_Profile/B05_Profile_UI_RouteEdit_Contour.ts
index a1b0f9cea..709e616e8 100644
--- a/B05_Profile/B05_Profile_UI_RouteEdit_Contour.ts
+++ b/B05_Profile/B05_Profile_UI_RouteEdit_Contour.ts
@@ -11,8 +11,7 @@
  * 그리기·라벨·집기가 출처를 안 가리게 한다.
  * ========================================================================== */
 
-import { API_BASE_URL } from "@config/config_frontend";
-import { fetchCachedJson } from "../A00_Common/b_asset_cache";
+import { contourAssetUrl, fetchCachedJson } from "../A00_Common/b_asset_cache";
 import {
   createNormalizer,
   type GeoJsonCollection,
@@ -71,8 +70,7 @@ export async function loadRouteEditContours(
       // 3D 뷰어가 쓰는 것과 **같은 파일**이다 — 보관함에 있으면 다시 내려받지 않는다.
       const data = await fetchCachedJson<ContourResponse>(
         projectId,
-        `${API_BASE_URL}/projects/${projectId}/surface/models/${options.surfaceModelId}` +
-          `/contour?interval=${interval}&smooth=${options.smooth}`,
+        contourAssetUrl(projectId, options.surfaceModelId, interval, options.smooth),
       );
       const all = data.contours ?? [];
       const onUnit = (level: number): boolean => Math.abs(level % LAS_CONTOUR_UNIT_M) < 1e-6;
diff --git a/B05_Profile/B05_Profile_UI_Viewer.ts b/B05_Profile/B05_Profile_UI_Viewer.ts
index 78f276413..619242cc5 100644
--- a/B05_Profile/B05_Profile_UI_Viewer.ts
+++ b/B05_Profile/B05_Profile_UI_Viewer.ts
@@ -4,7 +4,7 @@ import { createTerrainCompass } from "@ui/ui_template_compass";
 import { GLTFLoader } from "three/examples/jsm/loaders/GLTFLoader.js";
 import { PLYLoader } from "three/examples/jsm/loaders/PLYLoader.js";
 import { API_BASE_URL } from "@config/config_frontend";
-import { fetchCachedBytes, fetchCachedJson } from "../A00_Common/b_asset_cache";
+import { contourAssetUrl, fetchCachedBytes, fetchCachedJson } from "../A00_Common/b_asset_cache";
 import { bindCursorPivotControls, TOP_VIEW_TILT } from "../B04_PreProcess/B04_PreProcess_UI_Camera";
 import {
   createRouteMarkers,
@@ -325,7 +325,7 @@ export function createRouteViewer(): RouteViewer {
       contours: Array<{ level: number; coordinates: [number, number, number][] }>;
     }>(
       current.projectId,
-      `${API_BASE_URL}/projects/${current.projectId}/surface/models/${current.modelId}/contour?interval=${interval}&smooth=${current.smooth}`,
+      contourAssetUrl(current.projectId, current.modelId, interval, current.smooth),
     );
     clearContours();
     // 등고선 한 가닥마다 3D 객체를 만들면 수백 개가 된다. 주곡선·보조곡선 두 덩어리로 합친다.
diff --git a/resources/tester/test_345_4_contour_one_url.py b/resources/tester/test_345_4_contour_one_url.py
new file mode 100644
index 000000000..b7db895b6
--- /dev/null
+++ b/resources/tester/test_345_4_contour_one_url.py
@@ -0,0 +1,35 @@
+"""345-4 정리 — B05 등고선 주소 한 벌(`contourAssetUrl` · 미리 받기와 같은 파일) · 빈 saveCorridorIfDirty 지움."""
+
+from __future__ import annotations
+
+from pathlib import Path
+
+ROOT = Path(__file__).resolve().parents[2]
+
+
+def _read(rel: str) -> str:
+    return (ROOT / rel).read_text(encoding="utf-8")
+
+
+def test_B05_등고선_주소는_한_벌():
+    for rel in (
+        "B05_Profile/B05_Profile_UI_Viewer.ts",
+        "B05_Profile/B05_Profile_UI_RouteEdit_Contour.ts",
+    ):
+        source = _read(rel)
+        assert "contourAssetUrl(" in source, rel
+        assert "/contour?interval" not in source, rel
+    # 미리 받기(b_asset_cache)도 같은 함수 — 주소가 같아야 보관함 한 칸을 같이 씀
+    assert "contourAssetUrl(projectId, confirmed.model_id, interval, smooth)" in _read(
+        "A00_Common/b_asset_cache.ts"
+    )
+
+
+def test_빈_코리도_올림_함수_지움():
+    for rel in (
+        "B05_Profile/B05_Profile_UI_Corridor.ts",
+        "B05_Profile/B05_Profile_UI_Page_Actions.ts",
+        "A00_Common/design/design_view_profile.ts",
+        "A00_Common/design/design_view_profile_3d.ts",
+    ):
+        assert "saveCorridorIfDirty" not in _read(rel), rel

From 871693650b00999980d62242b63e39a055191083 Mon Sep 17 00:00:00 2001
From: umsangdon <umsangdon@gmail.com>
Date: Fri, 16 Oct 2026 11:47:31 +0900
Subject: [PATCH 2/3] =?UTF-8?q?perf(3D):=20345-4=203D=20=EA=B8=B8=20?=
 =?UTF-8?q?=EB=AA=A8=ED=98=95=20=EC=9B=B9=20=EC=9B=8C=EC=BB=A4=20=E2=80=94?=
 =?UTF-8?q?=20=EC=A0=80=EC=9E=A5=20=EC=95=88=20=ED=95=9C=20=EC=B4=88?=
 =?UTF-8?q?=EC=95=88=20=EB=AF=B8=EB=A6=AC=EB=B3=B4=EA=B8=B0=EB=A5=BC=20?=
 =?UTF-8?q?=EC=9B=8C=EC=BB=A4=EC=97=90=EC=84=9C(buildCorridor=20=EA=B7=B8?=
 =?UTF-8?q?=EB=8C=80=EB=A1=9C)=20=C2=B7=20=EB=A6=AC=EB=B3=B8=20=EC=A2=8C?=
 =?UTF-8?q?=ED=91=9C=20Transferable=20=C2=B7=20=EC=A3=BC=20=EC=8A=A4?=
 =?UTF-8?q?=EB=A0=88=EB=93=9C=20=EB=A9=88=EC=B6=A4=200=20=C2=B7=20?=
 =?UTF-8?q?=EC=A0=80=EC=9E=A5=EB=B3=B8=20=EB=A8=BC=EC=A0=80(=ED=95=B4?=
 =?UTF-8?q?=EC=8B=9C=20=EB=A7=9E=EC=9C=BC=EB=A9=B4=20=EB=B0=9B=EA=B8=B0?=
 =?UTF-8?q?=EB=A7=8C)?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

- 새 _Corridor_Worker(워커 몸 · handleCorridorRequest) · _Corridor_Worker_Client(buildCorridorOffThread · 워커 없거나 깨지면 주 스레드 같은 함수)
- ensureCorridor 의 짓기만 워커로 · vite 설정 그대로(new Worker(new URL(…)) 기본 지원)
- 서버 Node 묶음 입구 · Build 안 고침(다시 짓기 불필요)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VmC34fsxxbweEG3RUjs3Mn
---
 B05_Profile/B05_Profile_UI_Corridor.ts        |  10 +-
 B05_Profile/B05_Profile_UI_Corridor_Worker.ts |  58 ++++++++
 .../B05_Profile_UI_Corridor_Worker_Client.ts  |  73 ++++++++++
 .../tester/helper_345_4_corridor_worker.cjs   | 132 ++++++++++++++++++
 4 files changed, 269 insertions(+), 4 deletions(-)
 create mode 100644 B05_Profile/B05_Profile_UI_Corridor_Worker.ts
 create mode 100644 B05_Profile/B05_Profile_UI_Corridor_Worker_Client.ts
 create mode 100644 resources/tester/helper_345_4_corridor_worker.cjs

diff --git a/B05_Profile/B05_Profile_UI_Corridor.ts b/B05_Profile/B05_Profile_UI_Corridor.ts
index 321cd5de3..46a4d4c73 100644
--- a/B05_Profile/B05_Profile_UI_Corridor.ts
+++ b/B05_Profile/B05_Profile_UI_Corridor.ts
@@ -6,8 +6,9 @@
  *   1) 짓기 = 서버 Node(`B05_Profile_Corridor_Prebuild`) — 자동 체인 · 노선 [확인] 체인 ·
  *      B06 [저장] · [확정] 끝. 브라우저는 올리지 않는다(PUT 없음).
  *   2) 받기: 저장본 GET → 버전 해시가 현 정본과 맞으면 그대로 표시.
- *   3) 어긋나면(저장 안 한 초안 — 벽 · 구조물) [3D 업데이트] 때만 브라우저가 미리보기로
- *      지음 — 메모리에만 · 올리지 않음.
+ *   3) 어긋나면(저장 안 한 초안 — 벽 · 구조물) [3D 업데이트] · 낡은 채 3D 모달을 열 때만 브라우저가
+ *      미리보기로 지음 — **웹 워커**(`_Corridor_Worker_Client` · 345-4 · 주 스레드 멈춤 0) · 메모리에만 ·
+ *      올리지 않음.
  * 버전 해시 = 종횡단 정본의 설계 입력 요약(FNV-1a) — 측점·계획고·설계선이
  * 바뀌면 달라진다. 구조물 서피스 훅(CorridorStructureHook)은 예약만(범위 제외).
  * ========================================================================== */
@@ -21,7 +22,8 @@ import {
 import type { SectionDetailResponse } from "../B06_Section/B06_Section_Api_Fetch";
 import { refreshStaleDesigns } from "../B06_Section/B06_Section_Cross_Refresh";
 import type { RoutePoint } from "./B05_Profile_Api_Fetch";
-import { buildCorridor, type CorridorBuildResult } from "./B05_Profile_UI_Corridor_Build";
+import type { CorridorBuildResult } from "./B05_Profile_UI_Corridor_Build";
+import { buildCorridorOffThread } from "./B05_Profile_UI_Corridor_Worker_Client";
 import {
   corridorHash,
   ENVELOPE_VERSION,
@@ -169,7 +171,7 @@ export async function ensureCorridor(
   // 종단 계획선 샘플을 함께 넘겨 측점 사이가 종단곡선을 따라 부드럽게 이어지게 한다.
   // 라이브 편집분(alignment.samples)이 있으면 그걸 쓴다 — 정본 design_profiles는
   // 편집 전 값이라 전환점·종단 보정이 낡은 계획고를 따라간다(2026-08-23 지적 ③).
-  const build = buildCorridor(
+  const build = await buildCorridorOffThread(
     detail.cross_sections,
     routePoints,
     designSamples ?? detail.longitudinal.design_profiles?.[0]?.samples,
diff --git a/B05_Profile/B05_Profile_UI_Corridor_Worker.ts b/B05_Profile/B05_Profile_UI_Corridor_Worker.ts
new file mode 100644
index 000000000..6c605be99
--- /dev/null
+++ b/B05_Profile/B05_Profile_UI_Corridor_Worker.ts
@@ -0,0 +1,58 @@
+/* =============================================================================
+ * B05_Profile_UI_Corridor_Worker.ts
+ * 3D 길 모형 **웹 워커**(345-4) — 저장 안 한 초안의 미리보기를 주 스레드 밖에서 짓는다.
+ *
+ * 짓는 셈은 `buildCorridor` 그대로(서버 Node 묶음 `B05_Profile_Corridor_Node` 와 같은 순수 계산) —
+ * 새로 짜지 않는다. 결과의 리본 좌표(Float64Array)는 복사 없이 넘긴다(Transferable).
+ * 부르는 쪽은 `_Corridor_Worker_Client`. 이 파일 맨 위에 DOM · window 를 두지 않는다.
+ * ========================================================================== */
+
+import type { RoutePoint } from "./B05_Profile_Api_Fetch";
+import type { CrossSection } from "../B06_Section/B06_Section_Api_Fetch";
+import { buildCorridor, type CorridorBuildResult } from "./B05_Profile_UI_Corridor_Build";
+
+export interface CorridorWorkerRequest {
+  id: number;
+  crossSections: CrossSection[];
+  routePoints: RoutePoint[];
+  designSamples?: Array<{ chainage_m: number; elevation_m: number; ground_elevation_m?: number }>;
+}
+
+export interface CorridorWorkerResponse {
+  id: number;
+  build: CorridorBuildResult | null;
+  error?: string;
+}
+
+/** 넘길 버퍼 — 리본 좌표(가장 큼). 나머지는 구조화 복제. */
+export function corridorTransfers(build: CorridorBuildResult | null): ArrayBuffer[] {
+  return build ? build.ribbons.map((ribbon) => ribbon.positions.buffer as ArrayBuffer) : [];
+}
+
+/** 요청 하나 — 워커 안에서도 시험에서도 같은 함수. */
+export function handleCorridorRequest(request: CorridorWorkerRequest): CorridorWorkerResponse {
+  try {
+    const build = buildCorridor(request.crossSections, request.routePoints, request.designSamples);
+    return { id: request.id, build };
+  } catch (error) {
+    return {
+      id: request.id,
+      build: null,
+      error: error instanceof Error ? error.message : "짓기 실패",
+    };
+  }
+}
+
+interface WorkerScope {
+  onmessage: ((event: { data: CorridorWorkerRequest }) => void) | null;
+  postMessage: (message: CorridorWorkerResponse, transfer: ArrayBuffer[]) => void;
+}
+
+// 워커로 돌 때만 듣는다(모듈을 시험 · 주 스레드가 들여와도 아무 일 없음).
+if (typeof (globalThis as { WorkerGlobalScope?: unknown }).WorkerGlobalScope !== "undefined") {
+  const scope = globalThis as unknown as WorkerScope;
+  scope.onmessage = (event) => {
+    const response = handleCorridorRequest(event.data);
+    scope.postMessage(response, corridorTransfers(response.build));
+  };
+}
diff --git a/B05_Profile/B05_Profile_UI_Corridor_Worker_Client.ts b/B05_Profile/B05_Profile_UI_Corridor_Worker_Client.ts
new file mode 100644
index 000000000..8d2f43114
--- /dev/null
+++ b/B05_Profile/B05_Profile_UI_Corridor_Worker_Client.ts
@@ -0,0 +1,73 @@
+/* =============================================================================
+ * B05_Profile_UI_Corridor_Worker_Client.ts
+ * 3D 길 모형 워커 부르기(345-4) — `buildCorridorOffThread` 가 워커(`_Corridor_Worker`)에 맡겨 주 스레드
+ * 멈춤 없이 짓는다. 워커를 못 쓰는 곳(시험 · 옛 브라우저) · 워커가 깨지면 주 스레드에서 같은 함수로 짓는다.
+ * 워커는 처음 부를 때 하나 세워 페이지 수명 동안 다시 쓴다.
+ * ========================================================================== */
+
+import type { RoutePoint } from "./B05_Profile_Api_Fetch";
+import type { CrossSection } from "../B06_Section/B06_Section_Api_Fetch";
+import { buildCorridor, type CorridorBuildResult } from "./B05_Profile_UI_Corridor_Build";
+import type {
+  CorridorWorkerRequest,
+  CorridorWorkerResponse,
+} from "./B05_Profile_UI_Corridor_Worker";
+
+type Samples = CorridorWorkerRequest["designSamples"];
+
+let worker: Worker | null = null;
+let seq = 0;
+const waits = new Map<number, (response: CorridorWorkerResponse | null) => void>();
+
+function settleAll(): void {
+  waits.forEach((resolve) => resolve(null));
+  waits.clear();
+}
+
+function getWorker(): Worker | null {
+  if (worker) return worker;
+  if (typeof Worker === "undefined") return null;
+  try {
+    worker = new Worker(new URL("./B05_Profile_UI_Corridor_Worker.ts", import.meta.url), {
+      type: "module",
+    });
+  } catch {
+    return null;
+  }
+  worker.onmessage = (event: MessageEvent<CorridorWorkerResponse>) => {
+    const resolve = waits.get(event.data.id);
+    waits.delete(event.data.id);
+    resolve?.(event.data);
+  };
+  // 워커가 깨지면 버리고 기다리던 것은 주 스레드로 — 다음 부름은 새 워커.
+  worker.onerror = () => {
+    worker?.terminate();
+    worker = null;
+    settleAll();
+  };
+  return worker;
+}
+
+/** 초안 미리보기 짓기 — 결과는 `buildCorridor` 와 같음(같은 입력 · 같은 함수). */
+export async function buildCorridorOffThread(
+  crossSections: CrossSection[],
+  routePoints: RoutePoint[],
+  designSamples?: Samples,
+): Promise<CorridorBuildResult | null> {
+  const onMain = (): CorridorBuildResult | null =>
+    buildCorridor(crossSections, routePoints, designSamples);
+  const target = getWorker();
+  if (!target) return onMain();
+  const id = ++seq;
+  const response = await new Promise<CorridorWorkerResponse | null>((resolve) => {
+    waits.set(id, resolve);
+    try {
+      target.postMessage({ id, crossSections, routePoints, designSamples });
+    } catch {
+      waits.delete(id); // 복제 못 하는 값 — 주 스레드로
+      resolve(null);
+    }
+  });
+  if (!response || response.error) return onMain();
+  return response.build;
+}
diff --git a/resources/tester/helper_345_4_corridor_worker.cjs b/resources/tester/helper_345_4_corridor_worker.cjs
new file mode 100644
index 000000000..fa6edd906
--- /dev/null
+++ b/resources/tester/helper_345_4_corridor_worker.cjs
@@ -0,0 +1,132 @@
+/* 345-4 3D 길 모형 웹 워커 헬퍼 — 워커 몸(`handleCorridorRequest`) · 부르기(`buildCorridorOffThread`)를
+ * 트랜스파일해 같은 입력으로 주 스레드 `buildCorridor` 와 견줌. 워커 경계는 structuredClone(+transfer)로 흉내 —
+ * 브라우저 postMessage 와 같은 복제 규칙. 측점 꼴은 helper_115_8_corridor_loft.cjs 와 같다. 결과는 JSON 한 벌.
+ */
+const fs = require("fs");
+const path = require("path");
+const ROOT = path.join(__dirname, "..", "..");
+const ts = require(path.join(ROOT, "config", "node_modules", "typescript"));
+
+const cache = new Map();
+function loadTs(file) {
+  const full = path.resolve(file);
+  if (cache.has(full)) return cache.get(full);
+  const js = ts
+    .transpileModule(fs.readFileSync(full, "utf8"), {
+      compilerOptions: { module: ts.ModuleKind.CommonJS, target: ts.ScriptTarget.ES2020 },
+    })
+    .outputText.replace(/import\.meta\.url/g, '"file:///x.js"');
+  const box = { exports: {} };
+  cache.set(full, box.exports);
+  const localRequire = (request) => {
+    if (request.startsWith("@ui/") || request.startsWith("@config/"))
+      return new Proxy({}, { get: () => () => undefined });
+    const target = request.startsWith("@util/")
+      ? path.join(ROOT, "common_util", request.slice(6))
+      : path.join(path.dirname(full), request);
+    if (request.endsWith(".json")) return JSON.parse(fs.readFileSync(target, "utf8"));
+    return loadTs(fs.existsSync(`${target}.ts`) ? `${target}.ts` : path.join(target, "index.ts"));
+  };
+  new Function("exports", "module", "require", js)(box.exports, box, localRequire);
+  return box.exports;
+}
+
+const B05 = (name) => path.join(ROOT, "B05_Profile", `${name}.ts`);
+const { buildCorridor } = loadTs(B05("B05_Profile_UI_Corridor_Build"));
+const { handleCorridorRequest, corridorTransfers } = loadTs(B05("B05_Profile_UI_Corridor_Worker"));
+const { buildCorridorOffThread } = loadTs(B05("B05_Profile_UI_Corridor_Worker_Client"));
+
+const HALF = 3;
+const ROAD_Z = 100;
+function station(chainage, cx, cy, lx, ly, groundZ, ratio) {
+  const w = Math.abs(groundZ - ROAD_Z) * ratio;
+  const mode = groundZ < ROAD_Z ? "both_fill" : "both_cut";
+  const pts = [
+    [-40, groundZ],
+    [-(HALF + w), groundZ],
+    [-HALF, ROAD_Z],
+    [-2.5, ROAD_Z],
+    [2.5, ROAD_Z],
+    [HALF, ROAD_Z],
+    [HALF + w, groundZ],
+    [40, groundZ],
+  ];
+  const samples = [];
+  for (let o = -40; o <= 40; o += 1) samples.push({ offset_m: o, elevation_m: groundZ });
+  return {
+    station_id: `S${chainage}`,
+    chainage_m: chainage,
+    label: "",
+    kind: "regular",
+    center_x: cx,
+    center_y: cy,
+    center_z: groundZ,
+    frame: { left_xy: [lx, ly] },
+    samples,
+    design: {
+      section_mode: mode,
+      road_edges: {
+        left: { offset_m: HALF, elevation_m: ROAD_Z },
+        right: { offset_m: -HALF, elevation_m: ROAD_Z },
+      },
+      carriageway_edges: {
+        left: { offset_m: 2.5, elevation_m: ROAD_Z },
+        right: { offset_m: -2.5, elevation_m: ROAD_Z },
+      },
+      design_line: pts.map(([offset_m, elevation_m]) => ({ offset_m, elevation_m })),
+      ditch: { type: "none" },
+      ditch_enabled: false,
+      ditch_side: "left",
+    },
+  };
+}
+
+const sections = [
+  station(0, 0, 0, 0, 1, 96, 1.5),
+  station(20, 20, 0, 0, 1, 104, 1.0),
+  station(40, 40, 0, 0, 1, 96, 1.5),
+];
+const route = [
+  { x: 0, y: 0 },
+  { x: 40, y: 0 },
+];
+const designSamples = [
+  { chainage_m: 0, elevation_m: 100, ground_elevation_m: 96 },
+  { chainage_m: 20, elevation_m: 100, ground_elevation_m: 104 },
+  { chainage_m: 40, elevation_m: 100, ground_elevation_m: 96 },
+];
+
+/** 비교용 평탄화 — 타입 배열은 숫자 배열로. */
+const plain = (value) =>
+  JSON.parse(JSON.stringify(value, (_k, v) => (ArrayBuffer.isView(v) ? Array.from(v) : v)));
+
+(async () => {
+  const out = {};
+  const direct = buildCorridor(sections, route, designSamples);
+  // 워커 경계 흉내 — 요청 · 응답 둘 다 구조화 복제 · 응답은 리본 버퍼를 넘김(transfer)
+  const request = structuredClone({
+    id: 7,
+    crossSections: sections,
+    routePoints: route,
+    designSamples,
+  });
+  const response = handleCorridorRequest(request);
+  const transfer = corridorTransfers(response.build);
+  const received = structuredClone(response, { transfer });
+  out.ribbonCount = direct.ribbons.length;
+  out.idKept = received.id === 7;
+  out.sameAsMain = JSON.stringify(plain(received.build)) === JSON.stringify(plain(direct));
+  out.float64 = received.build.ribbons.every((r) => r.positions instanceof Float64Array);
+  out.transferCount = transfer.length;
+  out.detached = response.build.ribbons.every((r) => r.positions.byteLength === 0); // 복사 없이 넘김
+  // 측점 모자람 → null(워커도 같음)
+  out.tooFew = handleCorridorRequest({
+    id: 1,
+    crossSections: [sections[0]],
+    routePoints: route,
+  }).build;
+  // 워커 없는 곳(시험 · 옛 브라우저) — 부르기가 주 스레드 같은 함수로
+  const fallback = await buildCorridorOffThread(sections, route, designSamples);
+  out.fallbackSame = JSON.stringify(plain(fallback)) === JSON.stringify(plain(direct));
+  console.log(JSON.stringify(out));
+})();

From 519b54eb7378752e27f74f4575c3e1323aa7a8d4 Mon Sep 17 00:00:00 2001
From: umsangdon <umsangdon@gmail.com>
Date: Fri, 16 Oct 2026 11:47:31 +0900
Subject: [PATCH 3/3] =?UTF-8?q?feat(=EC=A2=85=EB=8B=A8=EB=B3=B4=EA=B8=B0):?=
 =?UTF-8?q?=20345-4=203D=20=EB=AA=A8=EB=8B=AC=20=EC=97=B4=20=EB=95=8C=20?=
 =?UTF-8?q?=EB=82=A1=EC=95=98=EC=9C=BC=EB=A9=B4=20=EC=9E=90=EB=8F=99=20?=
 =?UTF-8?q?=EB=8B=A4=EC=8B=9C=20=EC=A7=93=EA=B8=B0=20=E2=80=94=20=EB=8B=AB?=
 =?UTF-8?q?=ED=98=80=20=EC=9E=88=EB=8A=94=20=EB=8F=99=EC=95=88=20=EC=95=88?=
 =?UTF-8?q?=20=EC=A7=80=EC=9D=8C=20=C2=B7=20=E3=80=8C3D=20=EB=8A=A6?=
 =?UTF-8?q?=EC=9D=8C=E3=80=8D=20=3D=20setCorridorPending=20=EA=B7=B8?=
 =?UTF-8?q?=EB=8C=80=EB=A1=9C=20=C2=B7=20=EB=8B=A8=EC=B6=94=20=C2=B7=20?=
 =?UTF-8?q?=EC=97=B4=EA=B8=B0=20=EA=B2=B9=EC=B3=90=EB=8F=84=20=ED=95=9C=20?=
 =?UTF-8?q?=EB=B2=88?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

- ProfileViewState.corridorPending(표시와 한 칸) · sections.setCorridorPending · 모달 onOpen(지형 선 뒤 · 그 사이 닫으면 안 부름)
- 시험: test_345_4_corridor_worker 4(워커 = 주 스레드 · transfer 9/9 · 저장본 먼저) · test_345_2_3d_modal 5(닫힌 동안 짓기 0) · 관련 310 통과 · typecheck 내 파일 0 오류

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VmC34fsxxbweEG3RUjs3Mn
---
 A00_Common/design/design_view_profile.ts      |  3 +-
 A00_Common/design/design_view_profile_3d.ts   | 49 ++++++++-----
 .../design/design_view_profile_3d_modal.ts    | 14 ++--
 .../design/design_view_profile_sections.ts    | 11 ++-
 resources/tester/helper_345_2_3d_modal.cjs    | 24 +++++++
 resources/tester/test_345_2_3d_modal.py       |  9 +++
 .../tester/test_345_4_corridor_worker.py      | 72 +++++++++++++++++++
 7 files changed, 158 insertions(+), 24 deletions(-)
 create mode 100644 resources/tester/test_345_4_corridor_worker.py

diff --git a/A00_Common/design/design_view_profile.ts b/A00_Common/design/design_view_profile.ts
index 0ed5e9664..b03e06de9 100644
--- a/A00_Common/design/design_view_profile.ts
+++ b/A00_Common/design/design_view_profile.ts
@@ -134,7 +134,7 @@ export async function mountProfileView(
     {
       // 계획선 편집 프리뷰가 횡단 설계선을 갱신해도 3D는 **자동으로 따라오지 않는다**
       // (2026-09-01 사용자 지시). 갱신은 상단 [3D 업데이트] 버튼으로 모았다.
-      onCrossDesignsUpdated: () => panel.setCorridorPending(true),
+      onCrossDesignsUpdated: () => sections.setCorridorPending(true),
       // 관 매설 목록 → 그래프 배관 측점선·통합 목록을 한 방향으로 맞춘다. 정본은 배수유역도의
       // 관 지점이다. 숨어 있을 때는 담아만 두고 다시 보일 때 싣는다(폼은 한 벌이라 횡단 보기 몫).
       onPipesChanged: (pipes) => {
@@ -187,6 +187,7 @@ export async function mountProfileView(
     roadWidths: DEFAULT_ROAD_WIDTHS,
     detail: null,
     corridorVisible: true,
+    corridorPending: false,
     routeReady: false,
     restoring: true,
   };
diff --git a/A00_Common/design/design_view_profile_3d.ts b/A00_Common/design/design_view_profile_3d.ts
index 833af8f2e..435f3b941 100644
--- a/A00_Common/design/design_view_profile_3d.ts
+++ b/A00_Common/design/design_view_profile_3d.ts
@@ -48,25 +48,36 @@ export function createProfile3d(deps: Profile3dDeps) {
     onResetView: () => viewer.setView("top"),
     onProjection: viewer.setProjection,
     // [3D 업데이트](2026-09-01) — 밀린 계획선 편집을 예상형상·측점선에 한 번에 반영한다.
-    onCorridorRefresh: async () => {
-      const detail = state.detail;
-      const latest = state.latest;
-      if (!detail || !latest?.route?.id) return;
-      const routePoints = latest.route_points ?? [];
-      if (routePoints.length <= 1) return;
-      await refreshCorridor(
-        viewer,
-        projectId,
-        latest.route.id,
-        detail,
-        routePoints,
-        deps.profilePanel().alignmentSamples() ?? undefined,
-      );
-      // 측점 바·라벨·램프도 계획고를 따라 움직여야 한다(2026-08-23 지적 ③).
-      deps.sections().renderStationLines(detail);
-    },
+    onCorridorRefresh: () => refreshOnce(),
   };
 
+  /** 짓는 중이면 그 결과를 같이 기다린다 — 단추 · 모달 열기가 겹쳐도 한 번만 짓는다. */
+  let refreshing: Promise<void> | null = null;
+  function refreshOnce(): Promise<void> {
+    refreshing ??= refreshCorridorNow().finally(() => (refreshing = null));
+    return refreshing;
+  }
+
+  /** 낡은 3D 길 모형을 지금 노선 · 계획선으로 — 저장본이 맞으면 받기만 · 아니면 워커 미리보기. */
+  async function refreshCorridorNow(): Promise<void> {
+    const detail = state.detail;
+    const latest = state.latest;
+    if (!detail || !latest?.route?.id) return;
+    const routePoints = latest.route_points ?? [];
+    if (routePoints.length <= 1) return;
+    await refreshCorridor(
+      viewer,
+      projectId,
+      latest.route.id,
+      detail,
+      routePoints,
+      deps.profilePanel().alignmentSamples() ?? undefined,
+    );
+    // 측점 바·라벨·램프도 계획고를 따라 움직여야 한다(2026-08-23 지적 ③).
+    deps.sections().renderStationLines(detail);
+    deps.sections().setCorridorPending(false);
+  }
+
   async function applyContours(interval: number): Promise<void> {
     // 화면 전체를 잠그지 않는다 — 진행 표시는 [재적용] 버튼이 맡는다(CLAUDE.md 5장).
     try {
@@ -120,6 +131,10 @@ export function createProfile3d(deps: Profile3dDeps) {
     viewer,
     loadTerrain,
     visible: () => deps.host.visible(),
+    // 낡은 채 열면 그때 한 번 다시 짓는다(워커 · 345-4) — 닫혀 있는 동안은 안 짓는다.
+    onOpen: () => {
+      if (state.corridorPending) void refreshOnce();
+    },
   });
 
   return { viewCallbacks, applyContours, modal };
diff --git a/A00_Common/design/design_view_profile_3d_modal.ts b/A00_Common/design/design_view_profile_3d_modal.ts
index 69af1a74d..7791d9dd0 100644
--- a/A00_Common/design/design_view_profile_3d_modal.ts
+++ b/A00_Common/design/design_view_profile_3d_modal.ts
@@ -18,6 +18,8 @@ export interface Viewer3dModalDeps {
   loadTerrain: () => Promise<void>;
   /** 종단 보기가 보이는가 — 숨은 보기에서는 안 연다. */
   visible: () => boolean;
+  /** 열 때마다(지형이 선 뒤) — 낡은 3D 길 모형 다시 짓기(345-4). */
+  onOpen?: () => void;
 }
 
 export function createViewer3dModal(deps: Viewer3dModalDeps) {
@@ -54,11 +56,13 @@ export function createViewer3dModal(deps: Viewer3dModalDeps) {
       },
     });
     viewer.setActive(true);
-    if (terrain) return;
-    const progress = createProgressCircle({ label: "3D 지형을 불러오는 중…", overlay: true });
-    progress.set(null);
-    viewer.root.append(progress.root);
-    terrain = deps.loadTerrain().finally(() => progress.remove());
+    if (!terrain) {
+      const progress = createProgressCircle({ label: "3D 지형을 불러오는 중…", overlay: true });
+      progress.set(null);
+      viewer.root.append(progress.root);
+      terrain = deps.loadTerrain().finally(() => progress.remove());
+    }
+    void terrain.then(() => modal && deps.onOpen?.()); // 그 사이 닫았으면 안 지음
   }
 
   /** 열려 있으면 닫는다 — 보기를 떠날 때 · 페이지를 떠날 때. */
diff --git a/A00_Common/design/design_view_profile_sections.ts b/A00_Common/design/design_view_profile_sections.ts
index bd0e8118b..dc9702ea6 100644
--- a/A00_Common/design/design_view_profile_sections.ts
+++ b/A00_Common/design/design_view_profile_sections.ts
@@ -29,6 +29,8 @@ export interface ProfileViewState {
   detail: SectionDetailResponse | null;
   /** [예상형상] 표시 상태 — 측점 바를 계획고 위로 올릴지 판단한다(패널 기본 ON). */
   corridorVisible: boolean;
+  /** 3D 길 모형이 지금 정본보다 낡았나 — [3D 업데이트] 표시와 한 값 · 모달을 열 때 다시 짓는 기준(345-4). */
+  corridorPending: boolean;
   routeReady: boolean;
   restoring: boolean;
 }
@@ -92,7 +94,7 @@ export function createProfileSections(deps: ProfileSectionsDeps) {
         detail,
         routePoints,
         profilePanel.alignmentSamples() ?? undefined,
-      ).then((fresh) => panel.setCorridorPending(!fresh));
+      ).then((fresh) => setCorridorPending(!fresh));
     }
   }
 
@@ -152,6 +154,12 @@ export function createProfileSections(deps: ProfileSectionsDeps) {
     }
   }
 
+  /** 「3D 늦음」 — [3D 업데이트] 표시(setCorridorPending 그대로)와 상태 한 칸을 같이 맞춘다. */
+  function setCorridorPending(pending: boolean): void {
+    state.corridorPending = pending;
+    deps.panel().setCorridorPending(pending);
+  }
+
   function renderLatest(next: RouteLatestResponse): void {
     state.latest = next;
     state.routeReady = Boolean(next.route && next.route_points.length > 1);
@@ -175,5 +183,6 @@ export function createProfileSections(deps: ProfileSectionsDeps) {
     renderSections,
     restoreSections,
     renderLatest,
+    setCorridorPending,
   };
 }
diff --git a/resources/tester/helper_345_2_3d_modal.cjs b/resources/tester/helper_345_2_3d_modal.cjs
index 83466b52a..2bda4f7c1 100644
--- a/resources/tester/helper_345_2_3d_modal.cjs
+++ b/resources/tester/helper_345_2_3d_modal.cjs
@@ -111,6 +111,7 @@ const frames = (n) => {
 
 let terrainLoads = 0;
 let resolveTerrain;
+let opens = 0; // 345-4 — 열 때(지형 뒤) 낡은 3D 길 모형 다시 짓기 부름
 const view3d = createViewer3dModal({
   viewer,
   loadTerrain: () => {
@@ -118,6 +119,7 @@ const view3d = createViewer3dModal({
     return new Promise((resolve) => (resolveTerrain = resolve));
   },
   visible: () => true,
+  onOpen: () => (opens += 1),
 });
 
 (async () => {
@@ -131,12 +133,15 @@ const view3d = createViewer3dModal({
   const first = modals[0];
   out.wide = first.opts.wide === true;
   out.inModal = viewer.root.parent === first.body;
+  await new Promise((r) => setImmediate(r));
+  out.opensBeforeTerrain = opens;
   out.spinnerWhileLoading = viewer.root.children.length === 1;
   frames(3);
   out.openDraws = viewer.draws;
   resolveTerrain();
   await new Promise((r) => setImmediate(r));
   out.spinnerGone = viewer.root.children.length === 0;
+  out.opensAfterTerrain = opens;
 
   // 닫기 단추 · Esc · 바깥 누름 = beforeClose 뒤 닫힘(공용 모달 규칙)
   out.beforeCloseOk = (await first.opts.beforeClose()) === true;
@@ -145,6 +150,8 @@ const view3d = createViewer3dModal({
   out.afterCloseDraws = viewer.draws;
   out.backInPark = viewer.root.parent === view3d.park;
   out.disposedOnClose = viewer.disposed;
+  await new Promise((r) => setImmediate(r));
+  out.opensWhileClosed = opens;
 
   view3d.open();
   view3d.open(); // 열린 동안 또 눌러도 하나
@@ -152,10 +159,27 @@ const view3d = createViewer3dModal({
   out.terrainLoads = terrainLoads;
   frames(2);
   out.reopenDraws = viewer.draws;
+  await new Promise((r) => setImmediate(r));
+  out.opensAfterReopen = opens;
 
   view3d.dispose(); // 페이지 떠남 — 열려 있으면 닫고 버림
   out.closedOnDispose = modals[1].open === false;
   out.disposed = viewer.disposed;
   out.runningAfterDispose = viewer.running;
+
+  // 지형 받는 사이 닫으면 — 다시 짓기 안 부름(닫힌 동안 짓기 0)
+  let lateOpens = 0;
+  let lateResolve;
+  const late = createViewer3dModal({
+    viewer: { root: new FakeNode("div"), setActive() {}, dispose() {} },
+    loadTerrain: () => new Promise((resolve) => (lateResolve = resolve)),
+    visible: () => true,
+    onOpen: () => (lateOpens += 1),
+  });
+  late.open();
+  late.close();
+  lateResolve();
+  await new Promise((r) => setImmediate(r));
+  out.closedBeforeTerrainOpens = lateOpens;
   console.log(JSON.stringify(out));
 })();
diff --git a/resources/tester/test_345_2_3d_modal.py b/resources/tester/test_345_2_3d_modal.py
index 751a94981..457e5fe0d 100644
--- a/resources/tester/test_345_2_3d_modal.py
+++ b/resources/tester/test_345_2_3d_modal.py
@@ -48,6 +48,15 @@ def test_처음_열_때_지형_한_번_로딩_원(out):
     assert out["reopenDraws"] == 5
 
 
+def test_열_때만_다시_짓기_닫힌_동안_0(out):
+    """345-4 — 낡은 3D 길 모형은 모달을 열 때(지형이 선 뒤)만 다시 짓기를 부름 · 닫혀 있으면 안 부름."""
+    assert out["opensBeforeTerrain"] == 0
+    assert out["opensAfterTerrain"] == 1
+    assert out["opensWhileClosed"] == 1
+    assert out["opensAfterReopen"] == 2  # 다시 열 때 한 번(열린 동안 또 눌러도 하나)
+    assert out["closedBeforeTerrainOpens"] == 0
+
+
 def test_떠날_때만_버림(out):
     assert out["beforeCloseOk"] is True
     assert out["closedOnDispose"] is True
diff --git a/resources/tester/test_345_4_corridor_worker.py b/resources/tester/test_345_4_corridor_worker.py
new file mode 100644
index 000000000..4a378e427
--- /dev/null
+++ b/resources/tester/test_345_4_corridor_worker.py
@@ -0,0 +1,72 @@
+"""345-4 3D 길 모형 웹 워커 — 워커 결과 = 주 스레드 결과(같은 입력) · 리본 좌표는 복사 없이(Transferable) ·
+서버 저장본이 먼저(해시 맞으면 받기만) · 저장 안 한 초안일 때만 워커 미리보기 · 모달을 열 때만 다시 짓기.
+
+셈은 Node 헬퍼 `helper_345_4_corridor_worker.cjs`(워커 경계 = structuredClone + transfer) · 배선은 글로 봄.
+모달 닫힌 동안 짓기 0 은 `test_345_2_3d_modal.py`.
+"""
+
+from __future__ import annotations
+
+import json
+import subprocess
+from pathlib import Path
+
+import pytest
+
+HERE = Path(__file__).resolve().parent
+ROOT = HERE.parents[1]
+
+
+def _read(rel: str) -> str:
+    return (ROOT / rel).read_text(encoding="utf-8")
+
+
+@pytest.fixture(scope="module")
+def out() -> dict:
+    run = subprocess.run(
+        ["node", str(HERE / "helper_345_4_corridor_worker.cjs")],
+        capture_output=True,
+        text=True,
+        encoding="utf-8",
+        check=True,
+    )
+    return json.loads(run.stdout)
+
+
+def test_워커_결과는_주_스레드와_같음(out):
+    assert out["ribbonCount"] > 0
+    assert out["sameAsMain"] is True and out["idKept"] is True
+    assert out["float64"] is True  # 모델 좌표 해상도 그대로
+    assert out["tooFew"] is None
+    assert out["fallbackSame"] is True  # 워커 없는 곳은 주 스레드 같은 함수
+
+
+def test_리본_좌표는_복사_없이_넘김(out):
+    assert out["transferCount"] == out["ribbonCount"]
+    assert out["detached"] is True
+
+
+def test_저장본_먼저_초안만_워커():
+    corridor = _read("B05_Profile/B05_Profile_UI_Corridor.ts")
+    body = corridor[corridor.index("export async function ensureCorridor(") :]
+    body = body[: body.index("\n}\n")]
+    assert body.index("fetchStored(") < body.index("buildCorridorOffThread(")
+    assert "if (!rebuild) return null;" in body  # 진입 = 저장본만(짓지 않음)
+    assert "buildCorridor(" not in body.replace("buildCorridorOffThread(", "")
+    client = _read("B05_Profile/B05_Profile_UI_Corridor_Worker_Client.ts")
+    assert 'new Worker(new URL("./B05_Profile_UI_Corridor_Worker.ts", import.meta.url)' in client
+    worker = _read("B05_Profile/B05_Profile_UI_Corridor_Worker.ts")
+    for banned in ("document.", "window.", "sessionStorage", 'from "three"'):
+        assert banned not in worker
+
+
+def test_모달_열_때_낡았으면_다시_짓기():
+    view3d = _read("A00_Common/design/design_view_profile_3d.ts")
+    assert "if (state.corridorPending) void refreshOnce();" in view3d
+    assert "onCorridorRefresh: () => refreshOnce()," in view3d
+    assert "deps.sections().setCorridorPending(false);" in view3d
+    sections = _read("A00_Common/design/design_view_profile_sections.ts")
+    assert ".then((fresh) => setCorridorPending(!fresh));" in sections
+    assert "deps.panel().setCorridorPending(pending);" in sections  # 「3D 늦음」 표시 그대로
+    view = _read("A00_Common/design/design_view_profile.ts")
+    assert "onCrossDesignsUpdated: () => sections.setCorridorPending(true)," in view