diff --git a/A00_Common/design/design_pipeline.ts b/A00_Common/design/design_pipeline.ts
index b43310c52..7b2f1728a 100644
--- a/A00_Common/design/design_pipeline.ts
+++ b/A00_Common/design/design_pipeline.ts
@@ -83,11 +83,15 @@ export interface DesignPipeline {
   ): Promise<PipelineRunRecord> | null;
   subscribe(fn: (event: PipelineEvent) => void): () => void;
   output<K extends StageName>(name: K): PipelineOutputs[K] | null;
+  /** 지금 입력(follow 가 고친 뒤 값 포함 · 읽기만). */
+  input<K extends InputKey>(key: K): PipelineInputs[K];
   readonly generation: number;
   /** 단계 · 알림 안에서 들어온 입력 쓰기(고리)를 막은 수. */
   readonly blockedWrites: number;
   /** 떠 있는 뒤 단계가 다 끝날 때까지. */
   settled(): Promise<void>;
+  /** 페이지를 떠남 — 떠 있는 계산 · 요청을 버림. */
+  dispose(): void;
 }
 
 type Outs = { [S in StageName]: PipelineOutputs[S] | null };
@@ -327,6 +331,9 @@ export function createDesignPipeline(options: { stages: PipelineStages }): Desig
     output(name) {
       return out[name] as never;
     },
+    input(key) {
+      return inputs[key];
+    },
     get generation() {
       return generation;
     },
@@ -336,6 +343,11 @@ export function createDesignPipeline(options: { stages: PipelineStages }): Desig
     async settled() {
       while (inFlight.size) await Promise.allSettled([...inFlight]);
     },
+    dispose() {
+      generation += 1;
+      controller.abort();
+      listeners.clear();
+    },
   };
 }
 
diff --git a/A00_Common/design/design_pipeline_page.ts b/A00_Common/design/design_pipeline_page.ts
new file mode 100644
index 000000000..9d25f59df
--- /dev/null
+++ b/A00_Common/design/design_pipeline_page.ts
@@ -0,0 +1,231 @@
+/* =============================================================================
+ * A00_Common/design/design_pipeline_page.ts
+ * B05 · B06 한 페이지의 계산 묶음 하나(PLAN 346-1) — 프로젝트마다 하나 · 페이지를 떠나면 버림
+ * (종단도 `dispose`). 단계 붙임 · 입력 모음 · 가게 잇기만 — 셈은 단계 파일 몫.
+ *
+ *   route · ground  `B05_Profile/logic/B05_Profile_Pipeline_RouteGround.ts`(sub8)
+ *   follow · planline · profile  `B05_Profile/logic/B05_Profile_Pipeline_Grade.ts`
+ *   stations  `design_pipeline_stations.ts` · footprint  `B05_Profile_Footprint_Stage.ts`(sub6)
+ *   cross · masshaul · haul(sub2) · drainage(sub3) · corridor(sub5) — 붙으면 `stages` 한 줄씩
+ *     (없으면 건너뜀 · 계약 규칙).
+ *
+ * 입력 — 노선 = 편집기 다리(`RouteDraftBridge` · 캐시 칸 route-draft) · 계획고 = 종단도 편집
+ *   (`pipelineGrade`) · 관 · 구조물 = 가게 초안(없으면 구조물은 저장분). 출력 = 가게 stations ·
+ *   profile · footprint · generation + 노선 초안이 있으면 종단도가 새 첫 계획선 · 옮긴 계획고를 그림.
+ * 첫 계산은 처음 고칠 때(또는 저장 안 한 노선 초안이 있을 때) — 열기만 하면 안 셈.
+ * [노선 반영] · [저장]이 서버 정본 — 여기 값은 미리보기(346-3 전까지).
+ * ========================================================================== */
+
+import { createDesignPipeline, publishToStore, type DesignPipeline } from "./design_pipeline";
+import { createStationsStage } from "./design_pipeline_stations";
+import type { PipelineInputs, RouteDraft, Vertex } from "./design_pipeline_types";
+import { useDesignStore } from "./design_store";
+import {
+  emptyEdits,
+  type AlignmentBase,
+  type AlignmentEdits,
+} from "../../B05_Profile/B05_Profile_UI_Profile_Alignment";
+import {
+  analysisTerrain,
+  fetchRoutePlan,
+  type RoutePlanResponse,
+} from "../../B05_Profile/B05_Profile_Api_Replan";
+import { fetchStructures, fetchStructureTypes } from "../../B05_Profile/B05_Profile_Api_Structures";
+import {
+  designTerrainGridNow,
+  groundStageDeps,
+} from "../../B05_Profile/B05_Profile_Api_TerrainGrid";
+import {
+  createGroundStage,
+  createRouteStage,
+  draftLine,
+} from "../../B05_Profile/logic/B05_Profile_Pipeline_RouteGround";
+import {
+  createPlanlineStage,
+  followStage,
+  gradeRange,
+  profileStage,
+  routeRange,
+} from "../../B05_Profile/logic/B05_Profile_Pipeline_Grade";
+import { footprintStage } from "../../B05_Profile/logic/B05_Profile_Footprint_Stage";
+import type { PlanType } from "../../common_util/common_util_structure_station";
+import type {
+  RouteDraftBridge,
+  RouteDraftEdit,
+} from "../../B05_Profile/B05_Profile_UI_RouteEdit_Draft";
+
+/** 종단도(`design_profile`)가 묶음에 내주는 것. */
+export interface ProfileLink {
+  /** 저장 노선의 종단 기준(측점 한 벌) · 지금 계획고 편집. */
+  pipelineSource(): { base: AlignmentBase | null; edits: AlignmentEdits };
+  /** 노선 초안으로 셈한 첫 계획선 · 옮긴 계획고를 그림. */
+  adoptPipeline(base: AlignmentBase, edits: AlignmentEdits, draft: boolean): void;
+}
+
+interface PagePipeline {
+  pipe: DesignPipeline;
+  bridge: RouteDraftBridge;
+  grade(edits: AlignmentEdits): void;
+  restart(): void;
+  dispose(): void;
+}
+
+const pages = new Map<string, PagePipeline>();
+const same = (a: unknown, b: unknown): boolean => JSON.stringify(a) === JSON.stringify(b);
+
+/** 편집기에 넘길 다리 — 그 프로젝트 묶음을 처음 부를 때 세움. */
+export function routeDraftBridge(
+  projectId: string,
+  link: ProfileLink,
+  options: { stationIntervalM?: number } = {},
+): RouteDraftBridge {
+  let page = pages.get(projectId);
+  if (!page) pages.set(projectId, (page = createPagePipeline(projectId, link, options)));
+  return page.bridge;
+}
+
+/** 종단도 계획고 편집(▲▼ · 끌기 · 되돌리기) — 묶음이 없으면(편집기 안 뜸) 아무 일 없음. */
+export const pipelineGrade = (projectId: string, edits: AlignmentEdits): void =>
+  pages.get(projectId)?.grade(edits);
+
+/** 저장 종단 기준이 바뀜(새 상세 · 구조물 측점) — 셈 중이면 처음부터 다시. */
+export const restartPagePipeline = (projectId: string): void => pages.get(projectId)?.restart();
+
+/** 지금 묶음(개발 · 시험) — 없으면 null. */
+export const pagePipeline = (projectId: string): DesignPipeline | null =>
+  pages.get(projectId)?.pipe ?? null;
+
+export function disposePagePipeline(projectId: string): void {
+  pages.get(projectId)?.dispose();
+  pages.delete(projectId);
+}
+
+function createPagePipeline(
+  projectId: string,
+  link: ProfileLink,
+  options: { stationIntervalM?: number },
+): PagePipeline {
+  const store = useDesignStore(projectId, null);
+  let plan: RoutePlanResponse | null = null;
+  let types: PlanType[] = [];
+  let savedStructures: unknown[] = [];
+  let ready = false;
+  let started = false;
+  /** 앞 종단이 노선 초안으로 셈한 것인가 — 초안을 버리면 저장 기준으로 다시 그림. */
+  let drawnDraft = false;
+  let disposed = false;
+
+  const savedLine = (): Vertex[] | null =>
+    plan ? plan.planned.map(([x, y]): Vertex => [x, y]) : null;
+  const pipe = createDesignPipeline({
+    stages: {
+      route: createRouteStage({
+        minRadiusM: () => plan?.min_radius_m ?? 0,
+        savedLine: () =>
+          plan && {
+            line: savedLine()!,
+            curves: plan.curves.map(({ start, apex, end, radius_m }) => ({
+              start,
+              apex,
+              end,
+              radius_m,
+            })),
+          },
+      }),
+      follow: followStage,
+      stations: createStationsStage({ intervalM: options.stationIntervalM, types: () => types }),
+      ground: createGroundStage(groundStageDeps(projectId)),
+      planline: createPlanlineStage({ savedBase: () => link.pipelineSource().base, savedLine }),
+      profile: profileStage,
+      footprint: footprintStage,
+    },
+  });
+  pipe.subscribe(publishToStore(store));
+  pipe.subscribe((event) => {
+    if (event.kind !== "stage" || event.stage !== "profile") return;
+    const draft = pipe.input("route") !== null;
+    const base = pipe.output("planline");
+    const edits = (pipe.input("alignment") as AlignmentEdits | null) ?? emptyEdits();
+    if ((draft || drawnDraft) && base) link.adoptPipeline(base, edits, draft);
+    drawnDraft = draft;
+  });
+
+  const inputsNow = (): PipelineInputs => ({
+    route: store.get("routeDraft"),
+    alignment: link.pipelineSource().edits,
+    cross: null,
+    // ponytail: 저장 관 목록(좌표)은 아직 안 받음 — 관 초안만. 346-3 에서 관 정본을 가게로.
+    pipes: store.get("pipes") ?? [],
+    structures: store.get("structures") ?? savedStructures,
+  });
+  const start = (): void => {
+    if (disposed || !ready || !link.pipelineSource().base) return;
+    started = true;
+    void pipe.start(inputsNow());
+  };
+
+  /** 저장 노선(그린 선 · 곡선표 · 기본 반경) — [노선 반영] 뒤 다시 받음(`restart`). */
+  const loadPlan = (): Promise<void> =>
+    fetchRoutePlan(projectId)
+      .then((routePlan) => void (plan = routePlan))
+      .catch(() => undefined);
+
+  designTerrainGridNow(projectId); // 지형 격자 미리 받기(받는 동안은 서버 길)
+  void Promise.all([
+    loadPlan(),
+    fetchStructureTypes().catch(() => []),
+    fetchStructures(projectId).catch(() => null),
+  ])
+    .then(([, structureTypes, list]) => {
+      types = structureTypes as PlanType[];
+      savedStructures = list?.structures ?? [];
+      ready = plan !== null;
+      if (store.get("routeDraft")) start(); // 저장 안 한 노선 초안 — 열 때부터 그 노선으로
+    })
+    .catch(() => undefined);
+
+  const unsubscribe = [
+    store.subscribe("pipes", (pipes) => started && void pipe.update("pipe", pipes ?? [])),
+    store.subscribe(
+      "structures",
+      (list) => started && void pipe.update("structure", list ?? savedStructures),
+    ),
+  ];
+
+  const bridge: RouteDraftBridge = {
+    saved: () => store.get("routeDraft"),
+    edited(edit: RouteDraftEdit | null) {
+      const stored = store.get("routeDraft");
+      let draft: RouteDraft | null = null;
+      if (edit) {
+        draft = { ...edit, rev: (stored?.rev ?? 0) + 1, terrain: analysisTerrain(projectId) };
+        if (stored && same({ ...stored, rev: 0 }, { ...draft, rev: 0 })) draft = stored;
+      }
+      store.set("routeDraft", draft);
+      if (!started) return start();
+      const before = pipe.output("route")?.line ?? null;
+      const after = draft ? draftLine(draft, plan?.min_radius_m ?? 0).line : savedLine();
+      void pipe.update("route", draft, routeRange(before, after));
+    },
+  };
+
+  return {
+    pipe,
+    bridge,
+    grade(edits) {
+      if (!started) return start();
+      if (same(edits, pipe.input("alignment"))) return;
+      const nodes = pipe.output("planline")?.basePvi.map((node) => node.chainage_m) ?? [];
+      const before = pipe.input("alignment") as AlignmentEdits | null;
+      void pipe.update("grade", edits, gradeRange(before, edits, nodes));
+    },
+    restart() {
+      if (started) void loadPlan().then(start);
+    },
+    dispose() {
+      disposed = true;
+      unsubscribe.forEach((stop) => stop());
+      pipe.dispose();
+    },
+  };
+}
diff --git a/A00_Common/design/design_pipeline_types.ts b/A00_Common/design/design_pipeline_types.ts
index 2b73d0f35..74e08a4dd 100644
--- a/A00_Common/design/design_pipeline_types.ts
+++ b/A00_Common/design/design_pipeline_types.ts
@@ -212,6 +212,14 @@ export interface PlanFootprint {
   roadRight: Vertex[];
   slopeLeft: Vertex[];
   slopeRight: Vertex[];
+  /** 비탈 끝 점마다 깎기(true) · 쌓기 — slopeLeft · slopeRight 와 같은 차례(그리기가 색을 가름). */
+  slopeLeftCut: boolean[];
+  slopeRightCut: boolean[];
+  /** 비탈 표시 짧은 선 — [도로 끝 점, 비탈 쪽 점] 묶음. */
+  ticks: number[][][];
+  /** 측점마다 원자료(측점 열쇠 · 누가거리 · 좌우 도로 끝 · 비탈 끝 m · 깎기) — 범위 밖 재사용 ·
+   *  모양 = `B05_Profile/logic/B05_Profile_PlanFootprint.ts` `FootprintRecord`(sub6). */
+  records: Array<{ key?: string; chainage_m: number }>;
 }
 
 /** 단계 이름 → 출력. drainage · corridor 는 표시만 하므로 출력이 없음(null). */
diff --git a/A00_Common/design/design_profile.ts b/A00_Common/design/design_profile.ts
index 84fe62bc7..07d569032 100644
--- a/A00_Common/design/design_profile.ts
+++ b/A00_Common/design/design_profile.ts
@@ -70,11 +70,8 @@ import {
   createProfileDrag,
 } from "../../B05_Profile/B05_Profile_UI_Profile_Drag";
 import { planCurveWarning, sampleAt } from "../../B05_Profile/B05_Profile_UI_Profile_Guard";
-import {
-  irregularGraphStations,
-  maxChainageOf,
-} from "../../B05_Profile/B05_Profile_UI_Profile_Layout";
-import { followMovedNodes, oneStationList } from "../../common_util/common_util_structure_station";
+import { listedBase } from "./design_profile_base";
+import { disposePagePipeline, pipelineGrade, restartPagePipeline } from "./design_pipeline_page";
 import type { RouteProfilePanelCallbacks } from "../../B05_Profile/B05_Profile_UI_Profile_Panel_Types";
 import type { ElevationWindowResult } from "@util/common_util_chart_ywindow";
 import { frameOf } from "@util/common_util_view_window";
@@ -223,6 +220,8 @@ export function createDesignProfile(ctx: DesignProfileContext) {
   let storedBase: AlignmentBase | null = null;
   let alignment: ProfileAlignment | null = null;
   let store = createProfileEditStore(null, emptyEdits(), () => rebuild());
+  /** 계산 묶음이 노선 초안으로 셈한 종단을 그리는 동안의 편집 한 벌 — 메모리만(346-1). */
+  let preview: typeof store | null = null;
   /** 서버 저장분 — 되돌리기 복원이 초안을 다시 읽을 때 기준으로 쓴다. */
   let savedEdits: AlignmentEdits = emptyEdits();
   let redrawPending = false;
@@ -342,31 +341,8 @@ export function createDesignProfile(ctx: DesignProfileContext) {
     history.record();
   }
 
-  /** 계획선 측점 줄 = 측점 한 벌(서버 일반 + 지금 구조물 측점 · 272) — 표 · ▲▼ · 그래프 · 3D · 횡단 다시 셈(342-1)이
-   *  같은 목록 · 사라진 구조물 측점의 꼭짓점은 서버와 같게 옮기거나 지움(`followMovedNodes`) · 늘 저장분에서 셈. */
-  function listed(): AlignmentBase | null {
-    if (!storedBase || !detail) return storedBase;
-    const server = detail.longitudinal.stations;
-    const planted = irregularGraphStations(irregularStations, maxChainageOf(detail.longitudinal));
-    const list = oneStationList(server, planted);
-    const after = new Set(list.map((station) => station.chainage_m.toFixed(3)));
-    const before = new Set(server.map((station) => station.chainage_m.toFixed(3)));
-    const gone = server
-      .filter((station) => station.kind === "irregular" && !station.grid)
-      .map((station) => station.chainage_m)
-      .filter((chainage) => !after.has(chainage.toFixed(3)));
-    const born = list
-      .map((station) => station.chainage_m)
-      .filter((chainage) => !before.has(chainage.toFixed(3)));
-    return {
-      ...storedBase,
-      basePvi: followMovedNodes(storedBase.basePvi, gone, born),
-      stations: list.map((station) => ({
-        station_id: station.station_id,
-        chainage_m: station.chainage_m,
-      })),
-    };
-  }
+  /** 계획선 측점 줄 = 측점 한 벌 — 셈은 `design_profile_base` 몫(계산 묶음 planline 도 같은 기준). */
+  const listed = (): AlignmentBase | null => listedBase(storedBase, detail, irregularStations);
 
   /**
    * 편집 후 다시 그린다. 길게 누르기(초당 10회)로 연속 호출되므로 한 프레임에 한 번만
@@ -374,6 +350,7 @@ export function createDesignProfile(ctx: DesignProfileContext) {
    */
   function rebuild(): void {
     if (base) alignment = buildAlignment(base, store.edits());
+    pipelineGrade(projectId, store.edits());
     // 계획고가 바뀌면 측점별 횡단 단면적도 함께 바뀐다 — 전 측점을 다시 계산해 공유
     // 캐시에 얹는다. 그래야 **횡단 기준** 유토곡선과 횡단 카드가 따라 움직인다
     // (2026-08-03 사용자 보고: B05에서 계획선을 끌어도 횡단 곡선이 그대로였음).
@@ -525,6 +502,7 @@ export function createDesignProfile(ctx: DesignProfileContext) {
       // 이월분은 base 설정 후 미저장 초안으로 커밋한다(확정 시 전송·재탐색 후 새로고침에도 유지).
       if (carried) store.replace(carried);
       alignment = base ? buildAlignment(base, store.edits()) : null;
+      restartPagePipeline(projectId);
       // 유토곡선 balloon 위치 캐시 — 두 보기가 **같은 scope**를 써서 같은 자리를 공유한다.
       // 영구저장소 값(detail.balloon_offsets)이 있으면 그것이 이긴다.
       configureBalloonOffsets(
@@ -601,6 +579,7 @@ export function createDesignProfile(ctx: DesignProfileContext) {
       irregularStations = stations;
       base = listed();
       if (base) alignment = buildAlignment(base, store.edits());
+      restartPagePipeline(projectId);
       draw();
     },
     /** 구조물 타입 레지스트리를 받아 마크 색·약호에 쓴다(최초 1회 · 우클릭 목록은 사이드 패널 몫). */
@@ -645,9 +624,24 @@ export function createDesignProfile(ctx: DesignProfileContext) {
       if (key !== undefined) store.resetStation(Number(key), moveTo);
     },
     isDirty: () => store.dirty(),
+    /** 계산 묶음(346-1) — 저장 노선의 종단 기준 · 지금 계획고 편집. */
+    pipelineSource: () => ({ base: listed(), edits: store.edits() }),
+    /** 노선 초안으로 셈한 첫 계획선 · 옮긴 계획고를 그림 — 초안 동안 편집은 메모리만(저장 노선에
+     *  안 씀 · [노선 반영] · [저장]이 서버 정본) · 초안을 버리면 저장 기준 · 세션 편집으로 돌아옴. */
+    adoptPipeline(nextBase: AlignmentBase, edits: AlignmentEdits, draft: boolean) {
+      const sameEdits = JSON.stringify(edits) === JSON.stringify(store.edits());
+      if (draft && store === preview && base === nextBase && sameEdits) return; // 이미 그림
+      if (draft && (store !== preview || !sameEdits))
+        store = preview = createProfileEditStore(null, edits, () => rebuild());
+      if (!draft && store === preview)
+        store = createProfileEditStore(routeId, savedEdits, () => rebuild());
+      if (!draft) preview = null;
+      base = draft ? nextBase : listed();
+      rebuild();
+    },
     /** [확정] 직전에 호출한다. 편집이 없으면 아무 것도 하지 않는다. */
     async save(): Promise<void> {
-      if (!routeId || !store.dirty()) return;
+      if (!routeId || !store.dirty() || store === preview) return; // 노선 초안 미리보기 편집은 안 보냄
       const saved = await saveProfileAlignment(projectId, routeId, store.edits());
       noticeDroppedEdits(saved);
       const next = saved.profile_alignment as ProfileAlignment | undefined;
@@ -688,6 +682,7 @@ export function createDesignProfile(ctx: DesignProfileContext) {
       drainagePanel?.load(projectId);
     },
     dispose() {
+      disposePagePipeline(projectId);
       setListening(false);
       drag.dispose();
       crossPreview.dispose();
diff --git a/A00_Common/design/design_profile_base.ts b/A00_Common/design/design_profile_base.ts
new file mode 100644
index 000000000..b706bfe86
--- /dev/null
+++ b/A00_Common/design/design_profile_base.ts
@@ -0,0 +1,44 @@
+/* =============================================================================
+ * A00_Common/design/design_profile_base.ts
+ * 종단도 계획선 기준 = 측점 한 벌(서버 일반 + 지금 구조물 측점 · 272) — `design_profile` 에서 나눔(700줄).
+ * 계산 묶음 planline 단계(`design_pipeline_page`)도 같은 기준을 받음.
+ * ========================================================================== */
+
+import type { SectionDetailResponse } from "../../B06_Section/B06_Section_Api_Fetch";
+import type { AlignmentBase } from "../../B05_Profile/B05_Profile_UI_Profile_Alignment";
+import type { IrregularStation } from "../../B05_Profile/B05_Profile_UI_IrregularStations";
+import {
+  irregularGraphStations,
+  maxChainageOf,
+} from "../../B05_Profile/B05_Profile_UI_Profile_Layout";
+import { followMovedNodes, oneStationList } from "../../common_util/common_util_structure_station";
+
+/** 계획선 측점 줄 = 측점 한 벌(서버 일반 + 지금 구조물 측점 · 272) — 표 · ▲▼ · 그래프 · 3D · 횡단 다시 셈(342-1)이
+ *  같은 목록 · 사라진 구조물 측점의 꼭짓점은 서버와 같게 옮기거나 지움(`followMovedNodes`) · 늘 저장분에서 셈. */
+export function listedBase(
+  storedBase: AlignmentBase | null,
+  detail: SectionDetailResponse | null,
+  irregularStations: IrregularStation[],
+): AlignmentBase | null {
+  if (!storedBase || !detail) return storedBase;
+  const server = detail.longitudinal.stations;
+  const planted = irregularGraphStations(irregularStations, maxChainageOf(detail.longitudinal));
+  const list = oneStationList(server, planted);
+  const after = new Set(list.map((station) => station.chainage_m.toFixed(3)));
+  const before = new Set(server.map((station) => station.chainage_m.toFixed(3)));
+  const gone = server
+    .filter((station) => station.kind === "irregular" && !station.grid)
+    .map((station) => station.chainage_m)
+    .filter((chainage) => !after.has(chainage.toFixed(3)));
+  const born = list
+    .map((station) => station.chainage_m)
+    .filter((chainage) => !before.has(chainage.toFixed(3)));
+  return {
+    ...storedBase,
+    basePvi: followMovedNodes(storedBase.basePvi, gone, born),
+    stations: list.map((station) => ({
+      station_id: station.station_id,
+      chainage_m: station.chainage_m,
+    })),
+  };
+}
diff --git a/A00_Common/design/design_view_profile.ts b/A00_Common/design/design_view_profile.ts
index b03e06de9..920f92c0e 100644
--- a/A00_Common/design/design_view_profile.ts
+++ b/A00_Common/design/design_view_profile.ts
@@ -20,6 +20,7 @@ import { createRouteProfilePanel } from "../../B05_Profile/B05_Profile_UI_Profil
 import { leaveForDashboard } from "../b_missing_data_guard";
 import { currentRoute, remountRoute } from "../router";
 import { mountRouteEditor } from "../../B05_Profile/B05_Profile_UI_RouteEdit";
+import { routeDraftBridge } from "./design_pipeline_page";
 import { createSelectionSync, graphTargetAt } from "../../B05_Profile/B05_Profile_UI_Selection";
 import {
   readStructurePick,
@@ -484,6 +485,10 @@ export async function mountProfileView(
       smooth: latestResponse.surface_params.smooth,
       tools: [view3d.modal.button],
       recommend: panel.recommend,
+      // 계산 묶음(346-1) — 노선을 고칠 때마다 종단이 따라옴(미리보기 · [노선 반영]이 정본).
+      draft: routeDraftBridge(activeProjectId, profilePanel, {
+        stationIntervalM: panel.values().stationInterval ?? undefined,
+      }),
     });
 
     // ③ 종단면·횡단 자료 — 하단 패널을 3D보다 먼저 채운다.
diff --git a/B05_Profile/B05_Profile_Route_Save.py b/B05_Profile/B05_Profile_Route_Save.py
index d1e344d79..9354d5d44 100644
--- a/B05_Profile/B05_Profile_Route_Save.py
+++ b/B05_Profile/B05_Profile_Route_Save.py
@@ -284,10 +284,10 @@ async def _carry_cross(
 
     new_long = _read_json(project_root / relative)
     _, new_structures = load_structures(str(project_root))
-    old_keys = station_keys(
-        old_long.get("stations") or [], list(enumerate(old_pipes)), old_structures, interval_m
+    old_keys = station_keys(old_long.get("stations") or [], old_pipes, old_structures, interval_m)
+    new_keys = station_keys(
+        new_long.get("stations") or [], [pipe for _, pipe in pairs], new_structures, interval_m
     )
-    new_keys = station_keys(new_long.get("stations") or [], pairs, new_structures, interval_m)
     designs = {
         round(float(row["chainage_m"]), 3): row["design"]
         for row in old_designs
diff --git a/B05_Profile/B05_Profile_Route_Save_Parts.py b/B05_Profile/B05_Profile_Route_Save_Parts.py
index f3ec307f5..d31a7277a 100644
--- a/B05_Profile/B05_Profile_Route_Save_Parts.py
+++ b/B05_Profile/B05_Profile_Route_Save_Parts.py
@@ -8,9 +8,9 @@ DB · 파일 없이 값만 받아 값을 돌려준다(시험이 그대로 부름
     (사용자 관 편집 지킴).
   - 새 세류선 교차점(옛 노선 위에 없던 자리)에 관이 없으면 기본 관 하나(`_base_pipes` 결과를 받음).
   - 관 최대 간격 보충 = 옛 노선에서 벗어난 자리의 **오목 지점**(지반 종단 낮은 곳)에만 — 격자 없음.
-  - 측점 열쇠(계약 `design_pipeline_types.ts` 머리) = 일반 `grid:k`(누가거리 ÷ 측점 간격 반올림) ·
-    관 `pipe:<id>` · 구조물 `structure:<id>`(구간 시작 · 끝은 `:start` · `:end`) · 시종점
-    `end:BP` · `end:EP`. 관 id = 저장 파일 차례(노선 저장 한 번 안에서 옛 · 새가 같음).
+  - 측점 열쇠 = `common_util_station_key.station_key` 한 벌(sub2 짝) — 일반 `grid:k` ·
+    관 `pipe:<id>` · 구조물 `structure:<id>` · 시종점 `end:BP` · `end:EP` ·
+    id 없으면 `at:<누가거리 0.01 m>`.
   - 횡단 이월 = 같은 열쇠 측점에 `CARRY_INPUT_KEYS` 일곱 · 관 · 구조물 열쇠면
     `STRUCTURE_ADJUST_KEYS` 도(구조물 조정은 구조물 따라) · 열쇠가 사라진 측점 수 =
     「노선 밖 고침」.
@@ -32,6 +32,8 @@ from common_util.common_util_drainage_pipes import (
     project_pipe_points,
 )
 from common_util.common_util_route_geometry import RouteVertex
+from common_util.common_util_station_key import chainage_key as station_chainage_key
+from common_util.common_util_station_key import station_key
 from common_util.common_util_structure_station import plan_stations, snap_structure_station
 from config.config_system import DRAINAGE_PIPE_MAX_SPACING_M, DRAINAGE_PIPE_MIN_SPACING_M
 
@@ -59,7 +61,7 @@ def vertices_of(xy: Sequence[Sequence[float]]) -> list[RouteVertex]:
 def follow_pipes(
     old_pipes: list[PipePoint], vertices: list[RouteVertex]
 ) -> list[tuple[int, PipePoint]]:
-    """관이 새 노선 좌표를 따라감 → [(관 id = 옛 차례, 새 관)] 누가거리 순 · 옛 목록 그대로."""
+    """관이 새 노선 좌표를 따라감 → [(옛 차례 · 더한 관 -1, 새 관)] 누가거리 순 · 옛 목록 그대로."""
     pairs = [(index, copy.deepcopy(pipe)) for index, pipe in enumerate(old_pipes)]
     for _, pipe in pairs:
         project_pipe_points([pipe], vertices)
@@ -145,49 +147,54 @@ def fill_concave_pipes(
         added += 1
 
 
-def _facility_keys(
-    pipes: Sequence[tuple[int, PipePoint]], structures: Sequence[Any]
-) -> dict[float, str]:
-    """측점 자리(0.01 m) → 관 · 구조물 열쇠. 같은 자리면 관이 먼저(`plan_stations` 이름 규칙)."""
-    keys: dict[float, str] = {}
-
-    def put(marks: list[dict[str, object]], head: str) -> None:
-        for mark in marks:
-            role = str(mark.get("role") or "anchor")
-            keys.setdefault(
-                round(float(mark["chainage_m"]), 2), head if role == "anchor" else f"{head}:{role}"
+def _facility_owners(
+    pipes: Sequence[PipePoint], structures: Sequence[Any]
+) -> dict[float, tuple[str, str | None]]:
+    """측점 자리(0.01 m) → (관 · 구조물, id). 같은 자리면 관이 먼저(`plan_stations` 이름 규칙)."""
+    owners: dict[float, tuple[str, str | None]] = {}
+    for pipe in pipes:
+        for mark in plan_stations([pipe], []):
+            owners.setdefault(
+                round(float(mark["chainage_m"]), 2), ("pipe", getattr(pipe, "id", None))
             )
-
-    for pipe_id, pipe in pipes:
-        if pipe_id >= 0:
-            put(plan_stations([pipe], []), f"pipe:{pipe_id}")
     for item in structures:
-        if getattr(item, "structure_id", None):
-            put(plan_stations([], [item]), f"structure:{item.structure_id}")
-    return keys
+        for mark in plan_stations([], [item]):
+            owners.setdefault(
+                round(float(mark["chainage_m"]), 2),
+                ("structure", getattr(item, "structure_id", None)),
+            )
+    return owners
 
 
 def station_keys(
     stations: Sequence[dict[str, Any]],
-    pipes: Sequence[tuple[int, PipePoint]],
+    pipes: Sequence[PipePoint],
     structures: Sequence[Any],
     interval_m: float,
 ) -> dict[str, float]:
-    """측점 열쇠 → 누가거리. 관 · 구조물 자리 > 시종점 > 일반 격자(간격 배수인 것만)."""
-    facility = _facility_keys(pipes, structures)
+    """측점 열쇠(`common_util_station_key.station_key` 한 벌) → 누가거리.
+
+    관 · 구조물 자리 > 시종점 > 일반 격자(간격 배수인 것만) · id 없는 관 · 구조물은 `at:` ·
+    같은 열쇠가 둘이면 뒤엣것은 `at:`(B06 `stationKeysOf` 와 같음).
+    """
+    owners = _facility_owners(pipes, structures)
     values = [float(row["chainage_m"]) for row in stations if row.get("chainage_m") is not None]
     out: dict[str, float] = {}
     for index, chainage in enumerate(values):
-        key = facility.get(round(chainage, 2))
-        if key is None and index == 0:
-            key = "end:BP"
-        elif key is None and index == len(values) - 1:
-            key = "end:EP"
-        elif key is None and interval_m > 0:
-            k = round(chainage / interval_m)
-            key = f"grid:{k}" if abs(chainage - k * interval_m) < _SAME_M else None
-        if key is not None:
-            out.setdefault(key, chainage)
+        owner = owners.get(round(chainage, 2))
+        if owner is not None:
+            key = station_key(owner[0], chainage, interval_m, owner[1])
+        elif index == 0:
+            key = station_key("bp", chainage, interval_m)
+        elif index == len(values) - 1:
+            key = station_key("ep", chainage, interval_m)
+        elif interval_m > 0 and abs(chainage - round(chainage / interval_m) * interval_m) < _SAME_M:
+            key = station_key("regular", chainage, interval_m)
+        else:
+            continue
+        if key in out:
+            key = f"at:{station_chainage_key(chainage)}"
+        out.setdefault(key, chainage)
     return out
 
 
diff --git a/B05_Profile/B05_Profile_UI_RouteEdit.ts b/B05_Profile/B05_Profile_UI_RouteEdit.ts
index 84143a10a..68c58f846 100644
--- a/B05_Profile/B05_Profile_UI_RouteEdit.ts
+++ b/B05_Profile/B05_Profile_UI_RouteEdit.ts
@@ -83,6 +83,7 @@ import {
   type RouteEditSnapshot,
 } from "./B05_Profile_UI_RouteEdit_History";
 import type { DesignPageHost } from "../A00_Common/design/design_page";
+import * as draftLink from "./B05_Profile_UI_RouteEdit_Draft";
 import "./B05_Profile_UI_Style_RouteEdit.css";
 
 /** 등고선 눈금을 고를 때 쓸 라벨 예산 — B04 지도 기본값(350)보다 **넉넉히** 둔다
@@ -105,6 +106,7 @@ export interface RouteEditOptions {
   tools?: HTMLElement[];
   /** 좌측 「노선 추천」 칸 요소 — [노선 추천] · [초기화] · 현재 추천(345-4). */
   recommend: InitialPanelParams["controls"];
+  draft?: draftLink.RouteDraftBridge; // 계산 묶음 다리(346-1 · `_Draft`)
 }
 
 /** 편집기가 사는 보기 — 보임 · 숨김 · 떠남. */
@@ -309,14 +311,11 @@ export async function mountRouteEditor(
 
   const toScreen = (vertex: Vertex): [number, number] =>
     meta ? metricToScreen(meta, view, vertex[0], vertex[1]) : [0, 0];
-
   /** 화면 px → 사업지 좌표(m). 셈은 `_View` 몫. */
   const toMetric = (px: number, py: number): Vertex =>
     meta ? screenToMetric(meta, view, px, py) : [0, 0];
-
   /** 화면 1m 당 픽셀 — 측점 라벨 솎기 단계를 여기서 정한다. */
   const pxPerMeter = (): number => (meta ? viewPxPerMeter(meta, view) : 1);
-
   /** 지금 화면에 낼 등고선 간격(m) — 그리기와 집기가 같은 값을 보게 한 자리에서 셈한다. */
   const contourStepM = (): number =>
     contours ? pickLevelStep(contours.layer, view, contours.intervalM, CONTOUR_LEVEL_BUDGET) : 0;
@@ -612,6 +611,8 @@ export async function mountRouteEditor(
     // 여기가 [연 상태로]가 돌아갈 자리다 — 창을 연 그대로.
     initial.ready(snapshotNow(), plan.edited, plan.current_initial ?? null);
     history = createRouteEditHistory(snapshotNow());
+    history = draftLink.watch(history, options.draft, () => stationSnap);
+    draftLink.restore(options.draft, restoreSnapshot);
     historyControls.sync();
     syncCurveBar();
     if (!planned.length) planned = plannedLine.map((vertex) => [vertex[0], vertex[1]]);
diff --git a/B05_Profile/B05_Profile_UI_RouteEdit_Draft.ts b/B05_Profile/B05_Profile_UI_RouteEdit_Draft.ts
new file mode 100644
index 000000000..1b08b9619
--- /dev/null
+++ b/B05_Profile/B05_Profile_UI_RouteEdit_Draft.ts
@@ -0,0 +1,82 @@
+/* =============================================================================
+ * B05_Profile_UI_RouteEdit_Draft.ts
+ * 노선 편집기 ↔ 계산 묶음 다리(PLAN 346-1) — 노선을 한 번 고칠 때마다(놓기 · 더함 · 지움 · 곡선 ·
+ * 되돌리기 · 다시하기 · [반영 전으로] · 추천 [적용]) 노선 초안을 넘김. 끄는 동안은 넘기지 않음
+ * (사진첩에 쌓이는 때 = 손을 놓은 때).
+ *
+ * 편집기는 사진첩(`_History`)을 `watch` 로 감싸기만 함 — 고친 줄 하나. 저장 안 한 초안은
+ * 다리가 캐시 칸(`route-draft`)에 두고, 편집기가 자료를 읽은 뒤 `restore` 로 한 번 되살림
+ * (새로고침 · 보기 전환에도 남음). 계산 · 가게는 `A00_Common/design/design_pipeline_page.ts` 몫.
+ * ========================================================================== */
+
+import type { RouteDraft } from "../A00_Common/design/design_pipeline_types";
+import type { RouteEditHistory, RouteEditSnapshot } from "./B05_Profile_UI_RouteEdit_History";
+
+/** 편집기가 넘기는 노선 — 판 번호 · 지형은 다리가 붙임. */
+export type RouteDraftEdit = Omit<RouteDraft, "rev" | "terrain">;
+
+export interface RouteDraftBridge {
+  /** 노선이 바뀜 — 열 때(저장분)와 같으면 null. */
+  edited(draft: RouteDraftEdit | null): void;
+  /** 저장 안 한 초안(캐시 칸) — 없으면 null. */
+  saved(): RouteDraft | null;
+}
+
+/** 사진 → 노선 초안(고정 · 고른 점은 노선이 아님). */
+export function draftOfSnapshot(snapshot: RouteEditSnapshot, stationSnap: boolean): RouteDraftEdit {
+  return {
+    nodes: snapshot.planned.map(([x, y]): [number, number] => [x, y]),
+    curveOn: [...snapshot.curveOn],
+    curveRadius: [...snapshot.curveRadius],
+    curveLock: [...snapshot.curveLock],
+    curveArc: [...snapshot.curveArc],
+    stationSnap,
+  };
+}
+
+/** 노선 초안 → 사진 — 고정은 편집기가 좌표로 다시 짚음(`restoreSnapshot` 새 걸음). */
+export function snapshotOfDraft(draft: RouteDraft): RouteEditSnapshot {
+  return {
+    planned: draft.nodes.map(([x, y]): [number, number] => [x, y]),
+    curveOn: [...draft.curveOn],
+    curveRadius: [...draft.curveRadius],
+    curveLock: [...draft.curveLock],
+    curveArc: [...draft.curveArc],
+    apexLock: draft.nodes.map(() => false),
+    picked: -1,
+  };
+}
+
+/** 사진첩을 감싸 노선이 바뀔 때마다 다리에 알림 — 쌓기 · 되돌리기 · 다시하기 · 열 때로. */
+export function watch(
+  history: RouteEditHistory,
+  bridge: RouteDraftBridge | undefined,
+  stationSnap: () => boolean,
+): RouteEditHistory {
+  if (!bridge) return history;
+  const tell = (snapshot: RouteEditSnapshot | null): RouteEditSnapshot | null => {
+    if (snapshot)
+      bridge.edited(history.isDirty() ? draftOfSnapshot(snapshot, stationSnap()) : null);
+    return snapshot;
+  };
+  return {
+    ...history,
+    commit: (snapshot) => {
+      history.commit(snapshot);
+      tell(snapshot);
+    },
+    undo: () => tell(history.undo()),
+    redo: () => tell(history.redo()),
+    reset: () => tell(history.reset()),
+  };
+}
+
+/** 저장 안 한 초안을 편집기에 한 번 되살림 — 사진첩에 새 걸음으로(되돌리면 저장분). */
+export function restore(
+  bridge: RouteDraftBridge | undefined,
+  apply: (snapshot: RouteEditSnapshot, message: string, record: boolean) => void,
+): void {
+  const kept = bridge?.saved();
+  if (kept?.nodes.length)
+    apply(snapshotOfDraft(kept), "저장 안 한 노선 초안을 되살렸습니다.", true);
+}
diff --git a/B05_Profile/logic/B05_Profile_Pipeline_Grade.ts b/B05_Profile/logic/B05_Profile_Pipeline_Grade.ts
new file mode 100644
index 000000000..a1a729082
--- /dev/null
+++ b/B05_Profile/logic/B05_Profile_Pipeline_Grade.ts
@@ -0,0 +1,144 @@
+/* =============================================================================
+ * B05_Profile_Pipeline_Grade.ts
+ * 계산 묶음(PLAN 346-1) **follow · planline · profile 단계** + 바뀐 범위 — 계약 =
+ * `A00_Common/design/design_pipeline_types.ts`. 셈은 이미 있는 짝을 부르기만(어댑터):
+ *
+ *   follow   — 관 · 구조물 좌표 따라감(`common_util_route_follow`) · 계획고 편집 옮김(`Grade_Carry`
+ *              `carryProfileEdits` 의 edits 몫) · 옛 노선(`before.route`)이 있을 때만.
+ *   planline — 노선 초안이 없으면 저장 종단 기준 그대로 · 있으면 새 지반 첫 계획선(`Grade_Ground`)으로
+ *              바뀐 구간만 다시 맞추고 밖은 저장 꼭짓점을 밂(`carryProfileEdits` 의 basePvi 몫).
+ *   profile  — `buildAlignment`(첫 계획선 + 계획고 편집) — 종단 보기가 쓰는 같은 함수.
+ *
+ * 화면 · fetch · 세션 없음(순수) — 저장 기준 · 저장 노선은 부르는 쪽이 넣음.
+ * ========================================================================== */
+
+import type {
+  FollowPatch,
+  RangePart,
+  StageFn,
+  Vertex,
+} from "../../A00_Common/design/design_pipeline_types";
+import {
+  followStructures,
+  projectPipePoints,
+  type FollowingPoint,
+  type FollowingStructure,
+} from "../../common_util/common_util_route_follow";
+import {
+  buildAlignment,
+  emptyEdits,
+  type AlignmentBase,
+  type AlignmentEdits,
+} from "../B05_Profile_UI_Profile_Alignment";
+import { carryProfileEdits, changedSpan } from "./B05_Profile_Grade_Carry";
+import { groundFollowingBasePvi, groundProfile } from "./B05_Profile_Grade_Ground";
+
+const xy = (line: ReadonlyArray<Vertex>): Array<{ x: number; y: number }> =>
+  line.map(([x, y]) => ({ x, y }));
+
+/** 서버 측점 id 꼴(`generate_sections`) — 종단 표 · 고르기가 이 id 로 측점을 짚음. */
+export const stationIdOf = (chainageM: number): string =>
+  `station_${String(Math.round(chainageM * 1000)).padStart(12, "0")}`;
+
+/** 노선 바뀐 범위 — 처음 바뀐 접선점부터 끝(같으면 전 구간). */
+export function routeRange(
+  before: ReadonlyArray<Vertex> | null,
+  after: ReadonlyArray<Vertex> | null,
+): RangePart {
+  const span = before && after ? changedSpan(xy(before), xy(after)) : null;
+  return { fromM: span ? span.start_m : 0, toM: Infinity };
+}
+
+/** 계획고 바뀐 범위 — 바뀐 편집 키 앞뒤 이웃 꼭짓점 사이(`nodes` = 계획선 꼭짓점 누가거리). 같으면 null. */
+export function gradeRange(
+  before: AlignmentEdits | null,
+  after: AlignmentEdits | null,
+  nodes: ReadonlyArray<number>,
+): RangePart | null {
+  const changed: number[] = [];
+  for (const field of ["station_offsets", "curve_radii"] as const) {
+    const a = before?.[field] ?? {};
+    const b = after?.[field] ?? {};
+    for (const key of new Set([...Object.keys(a), ...Object.keys(b)]))
+      if (a[key] !== b[key]) changed.push(Number(key));
+  }
+  if (!changed.length) return null;
+  const low = Math.min(...changed);
+  const high = Math.max(...changed);
+  const ahead = nodes.filter((node) => node > high + 1e-6);
+  return {
+    fromM: Math.max(0, ...nodes.filter((node) => node < low - 1e-6)),
+    toM: ahead.length ? Math.min(...ahead) : Infinity,
+  };
+}
+
+/** follow — 노선이 바뀐 차례에 한 번 · 관 · 구조물 좌표 따라감 · 계획고 편집 옮김. */
+export const followStage: StageFn<"follow"> = (ctx) => {
+  const before = ctx.before.route;
+  const now = ctx.out.route;
+  if (!before || !now) return {};
+  const line = xy(now.line);
+  const patch: FollowPatch = {};
+  const { pipes, structures, alignment } = ctx.inputs;
+  if (Array.isArray(pipes) && pipes.length)
+    patch.pipes = projectPipePoints(pipes as FollowingPoint[], line);
+  if (Array.isArray(structures) && structures.length)
+    patch.structures = followStructures(structures as FollowingStructure[], line).map(
+      (moved) => moved.item,
+    );
+  const span = changedSpan(xy(before.line), line);
+  if (span && alignment) patch.alignment = carryProfileEdits([], alignment, span, []).edits;
+  return patch;
+};
+
+export interface PlanlineDeps {
+  /** 저장 노선의 종단 기준(측점 한 벌 · 종단 보기 `listed`) — 없으면 아직 못 셈. */
+  savedBase(): AlignmentBase | null;
+  /** 저장 노선(그린 선) — 바뀐 구간을 가름. */
+  savedLine(): Vertex[] | null;
+}
+
+export function createPlanlineStage(deps: PlanlineDeps): StageFn<"planline"> {
+  return (ctx) => {
+    const saved = deps.savedBase();
+    if (!saved) throw new Error("저장 종단 기준이 아직 없습니다.");
+    const ground = ctx.out.ground;
+    const route = ctx.out.route;
+    if (!ctx.inputs.route || !ground || !route) return saved;
+    const { chainageM, z } = ground.longitudinal;
+    const samples = chainageM.map((chainage, index) => ({
+      chainage_m: chainage,
+      elevation_m: z[index],
+    }));
+    const profile = groundProfile(samples);
+    if (!profile) return saved; // 못 서는 땅 — 저장 기준 그대로(서버가 [저장] 때 다시 셈)
+    const groundPvi =
+      groundFollowingBasePvi({
+        samples,
+        stations: ground.stations.map((station) => station.chainageM),
+        policy: saved.policy,
+      }) ?? [];
+    const savedLine = deps.savedLine();
+    const span = savedLine ? changedSpan(xy(savedLine), xy(route.line)) : null;
+    return {
+      policy: saved.policy,
+      onlyExplicitCurves: saved.onlyExplicitCurves,
+      basePvi: span
+        ? carryProfileEdits(saved.basePvi, null, span, groundPvi).basePvi
+        : saved.basePvi,
+      chainage: profile.chainage,
+      ground: profile.ground,
+      stations: ground.stations.map((station) => ({
+        station_id: stationIdOf(station.chainageM),
+        chainage_m: station.chainageM,
+      })),
+    };
+  };
+}
+
+/** profile — 첫 계획선 + 계획고 편집 → 종단(종단 보기와 같은 `buildAlignment`). */
+export const profileStage: StageFn<"profile"> = (ctx) => {
+  const base = ctx.out.planline;
+  if (!base) throw new Error("첫 계획선이 없습니다.");
+  return buildAlignment(base, ctx.inputs.alignment ?? emptyEdits());
+};
diff --git a/resources/tester/helper_230_2_popout_frames.cjs b/resources/tester/helper_230_2_popout_frames.cjs
index 00fbd81f7..5ba3c4308 100644
--- a/resources/tester/helper_230_2_popout_frames.cjs
+++ b/resources/tester/helper_230_2_popout_frames.cjs
@@ -96,6 +96,8 @@ out.viewOf = {
     alignment: null,
     buildAlignment: () => null,
     store: { edits: () => ({}) },
+    projectId: "p",
+    pipelineGrade: () => undefined, // 계산 묶음(346-1) — 묶음 없으면 아무 일 없음
     scheduleCrossPreview: () => s.previews++,
     draw: () => s.draws++,
     root: inPopup(),
diff --git a/resources/tester/helper_346_1_pipeline_page.cjs b/resources/tester/helper_346_1_pipeline_page.cjs
new file mode 100644
index 000000000..029a86878
--- /dev/null
+++ b/resources/tester/helper_346_1_pipeline_page.cjs
@@ -0,0 +1,363 @@
+/* PLAN 346-1 단위검증 헬퍼 — 계산 묶음을 페이지 · 노선 편집에 붙인 것.
+ * 진짜 TS(`design_pipeline` · `design_pipeline_page` · `design_pipeline_stations` · `logic/*Pipeline*` ·
+ * `_RouteEdit_Draft` · sub1 · sub8 · sub6 짝)를 그 자리에서 트랜스파일해 Node 로 돌림. 서버 창구
+ * (`Api_Replan` · `Api_Structures` · `Api_TerrainGrid`)만 가짜. 입력 argv[2] JSON · argv[3] 격자 이진.
+ * 결과 = 표준출력 JSON 한 벌. 짝 = `test_346_1_pipeline_page.py`. */
+const fs = require("fs");
+const path = require("path");
+const ts = require(path.join(__dirname, "..", "..", "config", "node_modules", "typescript"));
+const CATALOG = require("./helper_322_catalog_module.cjs");
+
+const ROOT = path.join(__dirname, "..", "..");
+const job = JSON.parse(fs.readFileSync(process.argv[2], "utf8"));
+
+function memoryStorage() {
+  const map = new Map();
+  return {
+    getItem: (key) => (map.has(key) ? map.get(key) : null),
+    setItem: (key, value) => map.set(key, String(value)),
+    removeItem: (key) => map.delete(key),
+    key: (index) => [...map.keys()][index] ?? null,
+    get length() {
+      return map.size;
+    },
+  };
+}
+const session = memoryStorage();
+globalThis.window = { sessionStorage: session, localStorage: memoryStorage() };
+globalThis.fetch = async () => ({ ok: false });
+
+const STUBS = {};
+const cache = new Map();
+function loadTs(full) {
+  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;
+  const box = { exports: {} };
+  cache.set(full, box.exports);
+  const localRequire = (request) => {
+    if (CATALOG.isCatalogRequest(request)) return CATALOG;
+    const key = Object.keys(STUBS).find((name) => request.endsWith(name));
+    if (key) return STUBS[key];
+    if (request.startsWith("@util/"))
+      return loadTs(path.join(ROOT, "common_util", `${request.slice(6)}.ts`));
+    if (request.startsWith(".")) return loadTs(path.join(path.dirname(full), `${request}.ts`));
+    return require(request);
+  };
+  new Function("exports", "module", "require", js)(box.exports, box, localRequire);
+  return box.exports;
+}
+const load = (...parts) => loadTs(path.join(ROOT, ...parts));
+
+const sampler = load("common_util", "common_util_surface_sampler.ts");
+const bytes = fs.readFileSync(process.argv[3]);
+const grid = sampler.parseDtmGrid(
+  bytes.buffer.slice(bytes.byteOffset, bytes.byteOffset + bytes.length),
+);
+const local = { grid, design: "las" };
+
+let remoteCalls = 0;
+STUBS["B05_Profile_Api_Replan"] = {
+  analysisTerrain: () => "las",
+  fetchRoutePlan: async () => ({ planned: job.line, curves: [], min_radius_m: job.minRadius }),
+};
+STUBS["B05_Profile_Api_Structures"] = {
+  fetchStructures: async () => ({ structures: [] }),
+  fetchStructureTypes: async () => job.types,
+};
+STUBS["B05_Profile_Api_TerrainGrid"] = {
+  designTerrainGridNow: () => local,
+  groundStageDeps: () => ({ grid: () => local, remote: async () => (remoteCalls++, []) }),
+};
+
+const pipeMod = load("A00_Common", "design", "design_pipeline.ts");
+const pageMod = load("A00_Common", "design", "design_pipeline_page.ts");
+const stationsMod = load("A00_Common", "design", "design_pipeline_stations.ts");
+const routeGround = load("B05_Profile", "logic", "B05_Profile_Pipeline_RouteGround.ts");
+const grade = load("B05_Profile", "logic", "B05_Profile_Pipeline_Grade.ts");
+const gradeGround = load("B05_Profile", "logic", "B05_Profile_Grade_Ground.ts");
+const footprint = load("B05_Profile", "logic", "B05_Profile_Footprint_Stage.ts");
+const alignment = load("B05_Profile", "B05_Profile_UI_Profile_Alignment.ts");
+const draftLink = load("B05_Profile", "B05_Profile_UI_RouteEdit_Draft.ts");
+const page = load("A00_Common", "b_page_state.ts");
+
+const tick = (ms = 0) => new Promise((resolve) => setTimeout(resolve, ms));
+const n = job.nodes.length;
+const draftOf = (nodes) => ({
+  rev: 1,
+  nodes,
+  curveOn: Array(n).fill(true),
+  curveRadius: Array(n).fill(null),
+  curveLock: Array(n).fill(null),
+  curveArc: Array(n).fill(null),
+  stationSnap: false,
+  terrain: null,
+});
+const movedNodes = job.nodes.map((node, i) => (i === n - 1 ? [node[0] + 6, node[1] - 4] : node));
+const inputs = (route = null, edits = alignment.emptyEdits()) => ({
+  route,
+  alignment: edits,
+  cross: null,
+  pipes: [],
+  structures: [],
+});
+
+/** 단계 한 벌(실제) — 저장 기준은 부르는 쪽. */
+function realStages(savedBase, remote = null) {
+  return {
+    route: routeGround.createRouteStage({
+      minRadiusM: () => job.minRadius,
+      savedLine: () => ({ line: job.line, curves: [] }),
+    }),
+    follow: grade.followStage,
+    stations: stationsMod.createStationsStage({ types: () => job.types }),
+    ground: routeGround.createGroundStage(
+      remote ? { grid: () => null, remote } : { grid: () => local, remote: async () => [] },
+    ),
+    planline: grade.createPlanlineStage({ savedBase: () => savedBase, savedLine: () => job.line }),
+    profile: grade.profileStage,
+    footprint: footprint.footprintStage,
+  };
+}
+
+async function run() {
+  const out = { n };
+
+  // ⓪ 저장 기준 — 저장 노선 지반으로 첫 계획선(서버 정책 그대로)
+  const seed = pipeMod.createDesignPipeline({
+    stages: { ...realStages(null), planline: undefined, profile: undefined, footprint: undefined },
+  });
+  await seed.start(inputs());
+  const ground0 = seed.output("ground");
+  const samples = ground0.longitudinal.chainageM.map((c, i) => ({
+    chainage_m: c,
+    elevation_m: ground0.longitudinal.z[i],
+  }));
+  const profile0 = gradeGround.groundProfile(samples);
+  const savedBase = {
+    policy: job.policy,
+    onlyExplicitCurves: false,
+    basePvi: gradeGround.groundFollowingBasePvi({
+      samples,
+      stations: ground0.stations.map((s) => s.chainageM),
+      policy: job.policy,
+    }),
+    chainage: profile0.chainage,
+    ground: profile0.ground,
+    stations: ground0.stations.map((s) => ({
+      station_id: grade.stationIdOf(s.chainageM),
+      chainage_m: s.chainageM,
+    })),
+  };
+
+  // ① 실제 단계 한 번 — 저장 노선 · 노선 한 점 옮김 · 계획고 한 점
+  {
+    const pipe = pipeMod.createDesignPipeline({ stages: realStages(savedBase) });
+    const first = await pipe.start(inputs());
+    const savedPlanline = pipe.output("planline") === savedBase;
+    const beforeLine = pipe.output("route").line;
+    const beforeKeys = pipe.output("ground").stations.map((s) => [s.key, s.chainageM]);
+    const draft = draftOf(movedNodes);
+    const after = routeGround.draftLine(draft, job.minRadius).line;
+    const range = grade.routeRange(beforeLine, after);
+    const routeRun = await pipe.update("route", draft, range);
+    const moved = {
+      basePvi: pipe.output("planline").basePvi,
+      stations: pipe.output("ground").stations.map((s) => [s.key, s.chainageM]),
+      profileStations: pipe.output("profile").stations.length,
+      footprint: pipe.output("footprint") !== null,
+    };
+    const nodes = pipe.output("planline").basePvi.map((p) => p.chainage_m);
+    const target = nodes[Math.floor(nodes.length / 2)];
+    const edits = { station_offsets: { [alignment.chainageKey(target)]: 0.8 }, curve_radii: {} };
+    const gRange = grade.gradeRange(alignment.emptyEdits(), edits, nodes);
+    const gradeRun = await pipe.update("grade", edits, gRange);
+    // 꼭짓점 높이(종단곡선은 그 아래로 둥글게 지나감)
+    const pviAt = (profile) =>
+      profile.pvi.find((p) => Math.abs(p.chainage_m - target) < 1e-6).elevation_m;
+    const raised = pviAt(pipe.output("profile"));
+    const plain = pviAt(alignment.buildAlignment(pipe.output("planline"), alignment.emptyEdits()));
+    out.real = {
+      first: { outcome: first.outcome, totalMs: first.totalMs, stages: first.stages },
+      savedPlanline,
+      range,
+      routeRun: {
+        outcome: routeRun.outcome,
+        totalMs: routeRun.totalMs,
+        stages: routeRun.stages,
+        skipped: routeRun.skipped,
+      },
+      savedBasePvi: savedBase.basePvi,
+      moved,
+      beforeKeys,
+      gradeRange: gRange,
+      target,
+      gradeRun: {
+        outcome: gradeRun.outcome,
+        stages: Object.keys(gradeRun.stages),
+        skipped: gradeRun.skipped,
+        totalMs: gradeRun.totalMs,
+      },
+      raised: raised - plain,
+      log: globalThis.__aisloPipeline.runs.length,
+    };
+  }
+
+  // ② 늦은 응답 버림 — 격자 없음(서버 길) · 첫 지반 응답이 늦는 사이 노선을 또 옮김
+  {
+    const waits = [];
+    const remote = (points, _terrain, signal) =>
+      new Promise((resolve, reject) => {
+        waits.push(() => resolve(points.map(([x, y]) => sampler.heightAt(grid, x, y))));
+        signal.addEventListener("abort", () => reject(new Error("aborted")));
+      });
+    const pipe = pipeMod.createDesignPipeline({ stages: realStages(savedBase, remote) });
+    const commits = [];
+    pipe.subscribe((e) => e.kind === "stage" && commits.push(`${e.stage}@${e.generation}`));
+    const a = pipe.start(inputs(draftOf(movedNodes)));
+    await tick(5);
+    const b = pipe.update("route", draftOf(job.nodes), { fromM: 0, toM: Infinity });
+    await tick(5);
+    waits.forEach((go) => go());
+    const ra = await a;
+    await tick(5);
+    waits.slice(1).forEach((go) => go());
+    const rb = await b;
+    out.late = {
+      a: ra.outcome,
+      b: rb.outcome,
+      commits,
+      profileGen: commits.filter((c) => c.startsWith("profile")),
+    };
+  }
+
+  // ③ 편집기 다리 — 사진첩 감싸기 · 초안 되살림
+  {
+    const told = [];
+    let dirty = true;
+    const fake = {
+      commit: () => undefined,
+      undo: () => ({
+        planned: [
+          [0, 0],
+          [1, 1],
+        ],
+        curveOn: [true, true],
+        curveRadius: [null, null],
+        curveLock: [null, null],
+        curveArc: [null, null],
+        apexLock: [false, false],
+        picked: -1,
+      }),
+      redo: () => null,
+      reset: () => ({
+        planned: [[0, 0]],
+        curveOn: [true],
+        curveRadius: [null],
+        curveLock: [null],
+        curveArc: [null],
+        apexLock: [false],
+        picked: -1,
+      }),
+      canUndo: () => true,
+      canRedo: () => false,
+      isDirty: () => dirty,
+    };
+    const bridge = {
+      edited: (d) => told.push(d && d.nodes.length),
+      saved: () => draftOf(job.nodes),
+    };
+    const watched = draftLink.watch(fake, bridge, () => true);
+    watched.commit({
+      ...fake.undo(),
+      planned: [
+        [0, 0],
+        [2, 2],
+        [3, 3],
+      ],
+    });
+    watched.undo();
+    watched.redo();
+    dirty = false;
+    watched.reset();
+    const restored = [];
+    draftLink.restore(bridge, (snap, message, record) =>
+      restored.push([snap.planned.length, record]),
+    );
+    draftLink.restore({ saved: () => null }, () => restored.push("none"));
+    out.draftLink = {
+      told,
+      restored,
+      unwatched: draftLink.watch(fake, undefined, () => false) === fake,
+    };
+  }
+
+  // ④ 페이지 묶음 — 다리 → 노선 초안 캐시 칸 · 종단도 받기 · 떠남 · 다시 엶(초안 살아남음) · ▲▼
+  {
+    const P = "proj-3461";
+    const adopted = [];
+    let edits = alignment.emptyEdits();
+    const link = {
+      pipelineSource: () => ({ base: savedBase, edits }),
+      adoptPipeline: (base, nextEdits, draft) =>
+        adopted.push({ draft, saved: base === savedBase, stations: base.stations.length }),
+    };
+    const bridge = pageMod.routeDraftBridge(P, link, { stationIntervalM: 20 });
+    await tick(10);
+    const before = { saved: bridge.saved(), pipe: pageMod.pagePipeline(P) !== null };
+    const edit = { ...draftOf(movedNodes) };
+    delete edit.rev;
+    delete edit.terrain;
+    bridge.edited(edit);
+    await tick(50);
+    const key = `aislo:draft:route-draft:${P}`;
+    const cached = JSON.parse(session.getItem(key));
+    bridge.edited(edit); // 같은 노선 — 판 번호 그대로 · 다시 안 셈
+    const sameRev = JSON.parse(session.getItem(key)).rev;
+    await tick(50);
+    const adoptedDraft = adopted.slice();
+    bridge.edited(null); // 열 때로(되돌리기 끝)
+    await tick(50);
+    const afterRevert = { session: session.getItem(key), last: adopted[adopted.length - 1] };
+    bridge.edited(edit);
+    await tick(50);
+    pageMod.disposePagePipeline(P);
+    const disposed = pageMod.pagePipeline(P);
+    adopted.length = 0;
+    const again = pageMod.routeDraftBridge(P, link, { stationIntervalM: 20 });
+    const survived = again.saved();
+    await tick(80); // 받기 끝 → 저장 안 한 초안이 있으면 그 노선으로 셈
+    const reopened = adopted.slice();
+    edits = { station_offsets: { "100.000": 0.5 }, curve_radii: {} };
+    pageMod.pipelineGrade(P, edits);
+    await tick(30);
+    const gradeRuns = globalThis.__aisloPipeline.runs.slice(-1)[0];
+    page.clearDrafts(P);
+    out.page = {
+      before,
+      cached: { rev: cached.rev, terrain: cached.terrain, nodes: cached.nodes.length },
+      sameRev,
+      adoptedDraft,
+      afterRevert,
+      disposed,
+      survived: survived && survived.nodes.length,
+      reopened,
+      grade: { sources: gradeRuns.sources, stages: Object.keys(gradeRuns.stages) },
+      clearedDraft: session.getItem(key),
+      remoteCalls,
+    };
+    pageMod.disposePagePipeline(P);
+  }
+  return out;
+}
+
+run()
+  .then((out) => {
+    process.stdout.write(JSON.stringify(out));
+    process.exit(0);
+  })
+  .catch((error) => {
+    process.stderr.write(String(error && error.stack ? error.stack : error));
+    process.exit(1);
+  });
diff --git a/resources/tester/test_346_1_pipeline_page.py b/resources/tester/test_346_1_pipeline_page.py
new file mode 100644
index 000000000..f100e72c2
--- /dev/null
+++ b/resources/tester/test_346_1_pipeline_page.py
@@ -0,0 +1,199 @@
+"""PLAN 346-1 — 계산 묶음을 B05 페이지 · 노선 편집에 붙임.
+
+· 실제 단계 한 번(route · follow · stations · ground · planline · profile · footprint) — 노선 한 점 옮김
+  뒤 종단까지 0.3 s 안 · 바뀐 구간 앞 첫 계획선 꼭짓점 · 측점 열쇠 그대로 · 계획고 한 점은 측점 · 지반 안 셈
+· 늦은 응답 버림(격자 없음 · 서버 길 지반이 늦는 사이 노선을 또 옮김)
+· 편집기 다리(사진첩 감싸기 · 열 때와 같으면 null · 초안 되살림)
+· 페이지 묶음 — 노선 초안 캐시 칸 · 종단도가 받음 · 떠났다 다시 열어도 초안 살아남음 · ▲▼ = grade
+짝: `helper_346_1_pipeline_page.cjs`(실제 TS 를 Node 로 돌림 · 서버 창구만 가짜).
+"""
+
+from __future__ import annotations
+
+import csv
+import json
+import subprocess
+import sys
+import tempfile
+from pathlib import Path
+
+import numpy as np
+import pytest
+
+HERE = Path(__file__).resolve().parent
+ROOT = HERE.parents[1]
+if str(ROOT) not in sys.path:
+    sys.path.insert(0, str(ROOT))
+
+from B05_Profile import B05_Profile_Engine_Sections_Core as core  # noqa: E402
+from B05_Profile.B05_Profile_Engine_Grade import resolve_grade_options  # noqa: E402
+from B05_Profile.B05_Profile_Engine_Grade_Profile import (  # noqa: E402
+    design_ground_following_profile,
+)
+from B05_Profile.B05_Profile_Structures_Schema import structure_type_map  # noqa: E402
+from common_util.common_util_route_polyline import build_planned_polyline  # noqa: E402
+from common_util.common_util_surface_sampler import DtmGridSampler, dtm_grid_bytes  # noqa: E402
+
+pytestmark = pytest.mark.skipif(
+    not (ROOT / "config" / "node_modules" / "typescript").is_dir(),
+    reason="프론트엔드 의존성 미설치",
+)
+
+PROJECT = ROOT / "storage/1/3/1bb0f876-983f-4ca5-9cc7-f59ee1f77e0a"
+REAL_GRID = PROJECT / "B04_PreProcess/models/dtm_classification_smooth.npz"
+REAL_NODES = PROJECT / "B05_Profile/route/planned_route_initial_nodes.csv"
+MIN_RADIUS_M = 12.0
+BUDGET_MS = 300.0
+
+
+def _types() -> list[dict]:
+    return [
+        {
+            "type_id": t.type_id,
+            "group": t.group,
+            "placement": t.placement,
+            "managed_by": t.managed_by,
+        }
+        for t in structure_type_map().values()
+    ]
+
+
+def _line(nodes: list[list[float]]) -> list[list[float]]:
+    built = build_planned_polyline(
+        [tuple(n) for n in nodes],
+        min_radius_m=MIN_RADIUS_M,
+        simplify=False,
+        curve_flags=[True] * len(nodes),
+        radii=[None] * len(nodes),
+    )
+    return [list(v) for v in built.vertices]
+
+
+def _fake(folder: Path) -> tuple[Path, list[list[float]]]:
+    """가짜 격자 — 칸 폭 고르지 않음 · 빈칸 띠."""
+    rng = np.random.default_rng(3461)
+    x = (np.cumsum(rng.uniform(0.95, 1.1, 260)) + 1000.0).astype(np.float32)
+    y = (np.cumsum(rng.uniform(0.95, 1.1, 160)) + 2000.0).astype(np.float32)
+    xx, yy = np.meshgrid(x.astype(np.float64), y.astype(np.float64))
+    z = 500 + 0.08 * (xx - 1000) + 0.3 * (yy - 2000) + 2 * np.sin(xx / 13.0)
+    mask = np.ones(z.shape, dtype=bool)
+    mask[60:70, 100:115] = False
+    npz = folder / "dtm_fake.npz"
+    np.savez(npz, x=x, y=y, z=z.astype(np.float32), valid_mask=mask)
+    return npz, [[1010.0, 2020.0], [1090.0, 2040.0], [1150.0, 2110.0], [1250.0, 2135.0]]
+
+
+def _real(_folder: Path) -> tuple[Path, list[list[float]]]:
+    if not (REAL_GRID.is_file() and REAL_NODES.is_file()):
+        pytest.skip("검증_sub8 없음")
+    with REAL_NODES.open(encoding="utf-8") as handle:
+        return REAL_GRID, [[float(r["x"]), float(r["y"])] for r in csv.DictReader(handle)]
+
+
+def _run(case) -> dict:
+    with tempfile.TemporaryDirectory() as folder:
+        npz, nodes = case(Path(folder))
+        line = _line(nodes)
+        longitudinal = core.generate_sections(
+            np.asarray(line, dtype=np.float64), DtmGridSampler.from_npz(npz)
+        )["longitudinal"]
+        options = resolve_grade_options("trunk", terrain_type="normal", paved=False, stored=None)
+        policy = design_ground_following_profile(longitudinal, options)[0]["policy"]
+        job = {
+            "nodes": nodes,
+            "line": line,
+            "minRadius": MIN_RADIUS_M,
+            "policy": policy,
+            "types": _types(),
+        }
+        path = Path(folder) / "job.json"
+        path.write_text(json.dumps(job), encoding="utf-8")
+        grid = Path(folder) / "grid.bin"
+        grid.write_bytes(dtm_grid_bytes(npz))
+        proc = subprocess.run(  # noqa: S603 — 고정 실행 파일
+            ["node", str(HERE / "helper_346_1_pipeline_page.cjs"), str(path), str(grid)],
+            capture_output=True,
+            text=True,
+            encoding="utf-8",
+            timeout=120,
+        )
+    assert proc.returncode == 0, proc.stderr
+    return json.loads(proc.stdout)
+
+
+@pytest.fixture(scope="module", params=[_fake, _real], ids=["가짜", "검증_sub8"])
+def r(request) -> dict:
+    return _run(request.param)
+
+
+def test_실제_단계_한_번_노선_옮김_종단까지_시간(r):
+    real = r["real"]
+    assert real["first"]["outcome"] == "done" and real["savedPlanline"] is True
+    run = real["routeRun"]
+    assert run["outcome"] == "done"
+    for stage in ("route", "follow", "stations", "ground", "planline", "profile"):
+        assert stage in run["stages"], stage
+    to_profile = sum(
+        run["stages"][s] for s in ("route", "follow", "stations", "ground", "planline", "profile")
+    )
+    assert to_profile < BUDGET_MS, run["stages"]
+    assert run["totalMs"] < BUDGET_MS
+    assert real["moved"]["profileStations"] > 2 and real["moved"]["footprint"] is True
+
+
+def test_바뀐_구간_앞은_그대로(r):
+    real = r["real"]
+    from_m = real["range"]["fromM"]
+    assert 0 < from_m and real["range"]["toM"] is None  # JSON 의 Infinity = null
+    saved = [p for p in real["savedBasePvi"] if p["chainage_m"] < from_m - 1e-6]
+    moved = [p for p in real["moved"]["basePvi"] if p["chainage_m"] < from_m - 1e-6]
+    assert saved and moved == saved
+    before = {k: c for k, c in real["beforeKeys"] if c < from_m - 20}
+    after = dict(real["moved"]["stations"])
+    assert before and all(after.get(k) == c for k, c in before.items())
+
+
+def test_계획고_한_점은_측점_지반을_안_셈(r):
+    real = r["real"]
+    g = real["gradeRun"]
+    assert g["outcome"] == "done"
+    assert {"route", "follow", "stations", "ground", "planline"} <= set(g["skipped"])
+    assert "profile" in g["stages"]
+    rng = real["gradeRange"]
+    assert rng["fromM"] < real["target"] < (rng["toM"] if rng["toM"] is not None else float("inf"))
+    assert abs(real["raised"] - 0.8) < 1e-6
+
+
+def test_늦은_응답_버림(r):
+    late = r["late"]
+    assert late["a"] == "dropped" and late["b"] == "done"
+    assert late["profileGen"] == ["profile@2"]
+    assert not [c for c in late["commits"] if c.startswith(("ground@1", "planline@1"))]
+
+
+def test_편집기_다리(r):
+    d = r["draftLink"]
+    assert d["told"] == [3, 2, None]  # 쌓기 · 되돌리기 · 열 때로(null) — 다시하기 없음은 안 알림
+    assert d["restored"] == [
+        [r["n"], True]
+    ]  # 저장 안 한 초안 = 새 걸음으로 되살림 · 없으면 안 부름
+    assert d["unwatched"] is True
+
+
+def test_페이지_묶음_노선_초안_캐시_칸(r):
+    p = r["page"]
+    assert p["before"] == {"saved": None, "pipe": True}
+    assert (
+        p["cached"]["rev"] == 1
+        and p["cached"]["terrain"] == "las"
+        and p["cached"]["nodes"] == r["n"]
+    )
+    assert p["sameRev"] == 1  # 같은 노선 = 판 번호 그대로
+    assert p["adoptedDraft"] and all(a["draft"] and not a["saved"] for a in p["adoptedDraft"])
+    assert p["afterRevert"]["session"] is None and p["afterRevert"]["last"]["draft"] is False
+    assert p["disposed"] is None
+    assert p["survived"] == r["n"]  # 떠났다 다시 열어도 초안 살아남음
+    assert p["reopened"] and p["reopened"][-1]["draft"] is True
+    assert p["grade"]["sources"] == ["grade"] and "stations" not in p["grade"]["stages"]
+    assert p["clearedDraft"] is None  # clearDrafts 가 함께 비움
+    assert p["remoteCalls"] == 0  # 격자 있으면 서버 길 안 탐
diff --git a/resources/tester/test_346_3_route_save.py b/resources/tester/test_346_3_route_save.py
index 3a0618cb5..55bf9a055 100644
--- a/resources/tester/test_346_3_route_save.py
+++ b/resources/tester/test_346_3_route_save.py
@@ -131,31 +131,36 @@ def _structure(sid, type_id, anchor, start=None, end=None):
 
 
 def test_측점_열쇠_규칙():
-    stations = [{"chainage_m": s} for s in (0.0, 20.0, 40.0, 50.0, 60.0, 77.0, 80.0, 95.5)]
-    pipes = [(3, PipePoint(chainage_m=50.0))]
+    """`common_util_station_key` 한 벌 — 관 · 구조물 id · id 없으면 at: · 같은 열쇠 둘째는 at:."""
+    stations = [{"chainage_m": s} for s in (0.0, 20.0, 33.3, 40.0, 50.0, 60.0, 77.0, 80.0, 95.5)]
+    with_id = PipePoint(chainage_m=50.0)
+    with_id.id = "p-7"  # sub3 이 넣는 관 id
+    no_id = PipePoint(chainage_m=33.3)
     structures = [_structure("w1", "retaining_wall", 77.0, 60.0, 80.0)]
-    keys = station_keys(stations, pipes, structures, 20.0)
+    keys = station_keys(stations, [with_id, no_id], structures, 20.0)
     assert keys == {
         "end:BP": 0.0,
         "grid:1": 20.0,
+        "at:33.30": 33.3,  # id 없는 관
         "grid:2": 40.0,
-        "pipe:3": 50.0,
-        "structure:w1:start": 60.0,
-        "structure:w1": 77.0,
-        "structure:w1:end": 80.0,
+        "pipe:p-7": 50.0,
+        "structure:w1": 60.0,  # 구간 시작 측점이 먼저 열쇠를 가짐
+        "at:77.00": 77.0,  # 같은 구조물 열쇠 둘째 — at:
+        "at:80.00": 80.0,
         "end:EP": 95.5,
     }
+    assert "pipe:0" not in keys and "pipe:1" not in keys  # 파일 차례 열쇠 없음
 
 
 def test_이월은_열쇠로_누가거리가_밀려도():
     old_keys = {
         "end:BP": 0.0,
         "grid:1": 20.0,
-        "pipe:0": 50.0,
+        "pipe:p-7": 50.0,
         "structure:w1": 77.0,
         "grid:5": 100.0,
     }
-    new_keys = {"end:BP": 0.0, "grid:1": 20.0, "pipe:0": 57.0, "structure:w1": 84.0}
+    new_keys = {"end:BP": 0.0, "grid:1": 20.0, "pipe:p-7": 57.0, "structure:w1": 84.0}
     designs = {
         0.0: {"ground_type": "soil"},
         20.0: {"ground_type": "rock", "berm": {"on": True}, "cut_area_m2": 9.0},