diff --git a/A00_Common/design/design_calc_profile.ts b/A00_Common/design/design_calc_profile.ts
new file mode 100644
index 000000000..2a5ce57f3
--- /dev/null
+++ b/A00_Common/design/design_calc_profile.ts
@@ -0,0 +1,91 @@
+/* =============================================================================
+ * design_calc_profile.ts
+ * 계산 자리 「서버」 종단 길(PLAN 511-B B-3) — 판(`design_calc_sites.ts`)이 profile 묶음을 server 로 둔 때
+ * 묶음 planline 의 새 지반 첫 계획선 꼭짓점(P1 · `profile.base`)과 profile 단계 계획선 짓기(P2 ~ P4 · P8 ·
+ * `profile.alignment`)를 서버 Node 가 같은 TS 로 셈(창구 `POST /projects/{id}/calc`). both 면 브라우저 그대로.
+ * 서버 실패(끊김 밖) = 경고 한 줄 · 브라우저 값.
+ * ========================================================================== */
+
+import { calcOnServerNow } from "./design_calc_sites";
+import { serverCalc } from "./design_calc_server";
+import type { StageFn } from "./logic/design_pipeline_types";
+import {
+  groundFollowingBasePvi,
+  groundProfile,
+  type GroundFollowingInput,
+} from "../../B05_Profile/logic/B05_Profile_Grade_Ground";
+import { profileStage } from "../../B05_Profile/logic/B05_Profile_Pipeline_Grade";
+import {
+  emptyEdits,
+  type AlignmentNode,
+  type ProfileAlignment,
+} from "../../B05_Profile/logic/B05_Profile_UI_Profile_Alignment";
+
+const KEY = "profile";
+const r6 = (value: number): number => Number(value.toFixed(6));
+
+/** 서버 값 — 끊김은 그대로 던짐(묶음이 버림) · 그 밖 실패는 브라우저 값. */
+async function orLocal<T>(signal: AbortSignal, remote: () => Promise<T>, local: () => T) {
+  try {
+    return await remote();
+  } catch (error) {
+    if (signal.aborted) throw error;
+    console.warn("[calc-server] profile 실패 — 브라우저 값", error);
+    return local();
+  }
+}
+
+/** planline `groundPvi` — 서버면 첫 계획선 꼭짓점 약속(0.000001 m · `groundFollowingBasePvi` 꼴) · 아니면 null
+ *  (브라우저 셈 · 단계 동기). 판은 앞 ground 단계가 이미 받음(`calcOnServerNow`). */
+export function groundPviAt(
+  input: GroundFollowingInput,
+  signal: AbortSignal,
+): Promise<AlignmentNode[] | null> | null {
+  if (!calcOnServerNow(KEY)) return null;
+  const local = () => groundFollowingBasePvi(input);
+  const profile = groundProfile(input.samples);
+  if (!profile) return null;
+  return orLocal(
+    signal,
+    async () => {
+      const follow = {
+        stations: input.stations,
+        start_offset_m: input.startOffsetM ?? 0,
+        end_offset_m: input.endOffsetM ?? 0,
+      };
+      const inputs = { profile: { ...profile, policy: input.policy, ground_following: follow } };
+      const results = await serverCalc(KEY, ["profile.base"], inputs, signal);
+      const nodes = results["profile.base"] as AlignmentNode[] | null;
+      return (
+        nodes?.map((node) => ({
+          chainage_m: r6(node.chainage_m),
+          elevation_m: r6(node.elevation_m),
+        })) ?? null
+      );
+    },
+    local,
+  );
+}
+
+/** profile 단계 — 첫 계획선 + 계획고 편집 → 종단(서버면 `profile.alignment` · 아니면 동기 그대로). */
+export const profileAt: StageFn<"profile"> = (ctx) => {
+  const base = ctx.out.planline;
+  if (!base || !calcOnServerNow(KEY)) return profileStage(ctx);
+  return orLocal(
+    ctx.signal,
+    async () => {
+      const profile = {
+        chainage: base.chainage,
+        ground: base.ground,
+        policy: base.policy,
+        stations: base.stations,
+        base_pvi: base.basePvi,
+        edits: ctx.inputs.alignment ?? emptyEdits(),
+        only_explicit_curves: base.onlyExplicitCurves,
+      };
+      const results = await serverCalc(KEY, ["profile.alignment"], { profile }, ctx.signal);
+      return results["profile.alignment"] as ProfileAlignment;
+    },
+    () => profileStage(ctx) as ProfileAlignment,
+  );
+};
diff --git a/A00_Common/design/design_pipeline_base.ts b/A00_Common/design/design_pipeline_base.ts
index 0a67c0a40..2491b96d7 100644
--- a/A00_Common/design/design_pipeline_base.ts
+++ b/A00_Common/design/design_pipeline_base.ts
@@ -8,34 +8,18 @@
  * 종류 = 구조물 정의 전부(보기와 같음). 화면 모듈을 끌어 묶음 대신 페이지(`design_shared`)가 옵션으로 넘김.
  * ========================================================================== */
 
-import { listedBase } from "./design_profile_base";
-import { plannedIrregular } from "./design_structure_status";
 import { withPipeIds } from "./design_pipe_ids";
-import { planStations, type PlanType } from "../../common_util/common_util_structure_station";
 import type { PipelineInputs } from "./logic/design_pipeline_types";
-import { readAlignment } from "../../B05_Profile/logic/B05_Profile_UI_Profile_Data";
-import {
-  toAlignmentBase,
-  type AlignmentBase,
-} from "../../B05_Profile/logic/B05_Profile_UI_Profile_Alignment";
+import { plantedBase as plantedBaseWith } from "./logic/design_planted_base";
+import type { PlanType } from "../../common_util/common_util_structure_station";
+import type { AlignmentBase } from "../../B05_Profile/logic/B05_Profile_UI_Profile_Alignment";
 import type { SectionDetailResponse } from "../../B06_Section/B06_Section_Api_Fetch";
 
-/** 저장 상세(종단도가 그리는 것) + 지금 입력이 심는 측점 = 저장 노선 종단 기준. 상세가 없으면 종단도 기준. */
+/** 저장 상세 + 지금 입력이 심는 측점 = 저장 노선 종단 기준(셈 = logic) · 관 id = 세션 장부(`withPipeIds`). */
 export function plantedBase(
   source: { base: AlignmentBase | null; detail?: SectionDetailResponse | null },
   inputs: Pick<PipelineInputs, "pipes" | "structures">,
   types: ReadonlyArray<PlanType>,
-  /** 관 세션 id — 없으면 세션 장부(`withPipeIds`) · 서버 Node 는 장부 사본(511-B). */
-  pipeId?: (chainageM: number) => string,
 ): AlignmentBase | null {
-  const detail = source.detail ?? null;
-  const stored = detail && readAlignment(detail.longitudinal);
-  if (!detail || !stored) return source.base;
-  const list = (inputs.pipes ?? []) as Array<{ chainage_m: number }>;
-  const pipes = pipeId
-    ? list.map((pipe) => ({ ...pipe, id: pipeId(pipe.chainage_m) }))
-    : withPipeIds(list);
-  const structures = (inputs.structures ?? []) as Parameters<typeof planStations>[1];
-  const planted = plannedIrregular(planStations(pipes, structures, types), 20); // 간격 = 이름 몫 · 기준 무관
-  return listedBase(toAlignmentBase(stored), detail, planted);
+  return plantedBaseWith(source, inputs, types, (pipes) => withPipeIds(pipes));
 }
diff --git a/A00_Common/design/design_pipeline_page.ts b/A00_Common/design/design_pipeline_page.ts
index 786b9bf63..170bc3d1e 100644
--- a/A00_Common/design/design_pipeline_page.ts
+++ b/A00_Common/design/design_pipeline_page.ts
@@ -27,6 +27,8 @@ import { publishPagePipeline } from "./design_pipeline_page_publish";
 import { SOURCE_INPUT } from "./logic/design_pipeline_types";
 export { pipelineWork } from "./logic/design_pipeline";
 import { createStationsStage, snapOptions, stationDiff } from "./logic/design_pipeline_stations";
+import { stationsOnServer } from "./design_stations_server";
+import { routeOnServer } from "./design_route_server";
 import type {
   ChangeSource,
   FollowPatch,
@@ -87,9 +89,9 @@ import {
   createFollowStage,
   createPlanlineStage,
   gradeRange,
-  profileStage,
   routeRange,
 } from "../../B05_Profile/logic/B05_Profile_Pipeline_Grade";
+import { groundPviAt, profileAt } from "./design_calc_profile";
 import {
   draftSectionDetail,
   shapeStatus,
@@ -291,6 +293,7 @@ function createPagePipeline(
       route: createRouteStage({
         minRadiusM: () => plan?.min_radius_m ?? 0,
         savedLine: () => plan && { line: savedLine()!, curves: savedCurves() },
+        remote: routeOnServer, // 계산 자리 route 「서버」(511-B B-5)
       }),
       follow: (ctx) => {
         const kept = replay && ctx.inputs.route ? readAlignmentDraft(DRAFT_ROUTE_ID) : null;
@@ -307,14 +310,16 @@ function createPagePipeline(
         intervalM: options.stationIntervalM,
         types: () => enabled,
         saved: () => plan,
+        remote: stationsOnServer, // 계산 자리 stations 「서버」(511-B B-2)
       }),
       ground: createGroundStage(groundDeps),
       planline: createPlanlineStage({
         savedBase: (at) => options.plantedBase?.(savedSource(), at, types) ?? savedSource().base,
         savedLine,
         storedPvi,
+        groundPvi: groundPviAt, // 계산 자리 「서버」 = 서버 Node(511-B B-3)
       }),
-      profile: profileStage,
+      profile: profileAt,
       // 단면 유형 = 새 지형 상단측 · 소단 = 지금 구조물(365-5) · 저장 노선 = 다시 셈 창구 한 벌(365-4) · 엔진은
       // 창구 출력을 앞 결과로 안 이어 씀(초안 = 새로고침)
       cross: (ctx) => {
diff --git a/A00_Common/design/design_profile_base.ts b/A00_Common/design/design_profile_base.ts
index 4bf4bcfa7..9a11d5618 100644
--- a/A00_Common/design/design_profile_base.ts
+++ b/A00_Common/design/design_profile_base.ts
@@ -4,50 +4,5 @@
  * 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/logic/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";
-import { readAlignment } from "../../B05_Profile/logic/B05_Profile_UI_Profile_Data";
-import { seatBornNodes } from "../../B05_Profile/logic/B05_Profile_Grade_Seat";
-
-/** 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 지우고 새 측점엔 세움(`followMovedNodes` · `seatBornNodes` · 427) ·
- *  늘 저장분에서 셈. 심은 측점이 아직 없으면(null · 시설 줄 입력 전) 저장분 그대로(473). */
-export function listedBase(
-  storedBase: AlignmentBase | null,
-  detail: SectionDetailResponse | null,
-  irregularStations: IrregularStation[] | null,
-): AlignmentBase | null {
-  if (!storedBase || !detail || !irregularStations) 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)));
-  const moved = followMovedNodes(
-    storedBase.basePvi,
-    gone,
-    born,
-    Object.keys(readAlignment(detail.longitudinal)?.edits.station_offsets ?? {}),
-  );
-  return {
-    ...storedBase,
-    basePvi: seatBornNodes(storedBase, moved.nodes, moved.seat, moved.held),
-    stations: list.map((station) => ({
-      station_id: station.station_id,
-      chainage_m: station.chainage_m,
-    })),
-  };
-}
+// 계획선 측점 줄 = logic(511-B B-3 · 서버 Node 묶음도 같은 셈) — 부르는 쪽은 그대로 여기서 받음
+export { listedBase } from "./logic/design_planted_base";
diff --git a/A00_Common/design/design_route_server.ts b/A00_Common/design/design_route_server.ts
new file mode 100644
index 000000000..66a06bcba
--- /dev/null
+++ b/A00_Common/design/design_route_server.ts
@@ -0,0 +1,35 @@
+/* =============================================================================
+ * A00_Common/design/design_route_server.ts
+ * 계산 자리 route 「서버」(PLAN 511-B B-5) — 묶음 route 단계 노선(선 · 곡선)을 서버 Node
+ * `route.polyline`(같은 `buildEditedPolyline` · 노선 저장과 같은 셈)으로. 판이 both 면 null(화면 셈) ·
+ * 서버 값만 · 잠잠 뒤 · 끊김 · 실패 = undefined(단계가 화면 셈으로).
+ * ========================================================================== */
+
+import type { DraftArgs } from "../../B05_Profile/logic/B05_Profile_Pipeline_RouteGround";
+import type { EditedPolyline } from "../../B05_Profile/logic/B05_Profile_UI_RouteEdit_Curve";
+import { calcOnServerNow } from "./design_calc_sites";
+import { calcOnServerOnly } from "./design_calc_server";
+
+export function routeOnServer(
+  args: DraftArgs,
+  signal: AbortSignal,
+): Promise<EditedPolyline | undefined> | null {
+  if (!calcOnServerNow("route")) return null;
+  const [points, curveOn, curveRadius, minRadiusM] = args;
+  const route_polyline = {
+    points,
+    curve_flags: curveOn,
+    radii: curveRadius,
+    min_radius_m: minRadiusM,
+  };
+  return calcOnServerOnly<EditedPolyline>(
+    "route",
+    "route.polyline",
+    {
+      run: ["route.polyline"],
+      inputs: { route_polyline },
+      pick: (results) => results["route.polyline"],
+    },
+    signal,
+  );
+}
diff --git a/A00_Common/design/design_stations_server.ts b/A00_Common/design/design_stations_server.ts
new file mode 100644
index 000000000..03ca39ab0
--- /dev/null
+++ b/A00_Common/design/design_stations_server.ts
@@ -0,0 +1,38 @@
+/* =============================================================================
+ * A00_Common/design/design_stations_server.ts
+ * 계산 자리 stations 「서버」(PLAN 511-B B-2) — 묶음 stations 단계 측점 목록을 서버 Node
+ * `stations.list`(같은 `buildStations`)로. 판이 both 면 null(화면 셈) · 서버 값만 · 잠잠 뒤 ·
+ * 끊김 · 실패 = undefined(단계가 화면 셈으로). 구조물 정의는 서버 창구가 붙임.
+ * ========================================================================== */
+
+import { plusStations } from "@util/common_util_structure_station";
+import { calcOnServerNow } from "./design_calc_sites";
+import { calcOnServerOnly } from "./design_calc_server";
+import type { StationsArgs } from "./logic/design_pipeline_stations";
+import type { PipelineStation } from "./logic/design_pipeline_types";
+
+export function stationsOnServer(
+  args: StationsArgs,
+  signal: AbortSignal,
+): Promise<PipelineStation[] | undefined> | null {
+  if (!calcOnServerNow("stations")) return null;
+  const [line, curves, pipes, structures, options] = args;
+  const stations = {
+    line,
+    curves,
+    pipes,
+    structures,
+    types: options.types,
+    plus: [...(options.plus ?? plusStations())],
+    interval_m: options.intervalM,
+    include_endpoint: options.includeEndpoint,
+    station_snap: options.stationSnap ?? false,
+    station_snap_step: options.stationSnapStep ?? null,
+  };
+  return calcOnServerOnly<PipelineStation[]>(
+    "stations",
+    "stations.list",
+    { run: ["stations.list"], inputs: { stations }, pick: (results) => results["stations.list"] },
+    signal,
+  );
+}
diff --git a/A00_Common/design/design_structure_status.ts b/A00_Common/design/design_structure_status.ts
index 67b16f8a7..28937013d 100644
--- a/A00_Common/design/design_structure_status.ts
+++ b/A00_Common/design/design_structure_status.ts
@@ -6,35 +6,10 @@
  * 구조물 id = 구조물은 structure_id · 관은 세션 id(`design_pipe_ids` · 323-5 · 파일 모양 그대로 · 저장 안 함).
  * ========================================================================== */
 
-import type { IrregularStation } from "../../B05_Profile/B05_Profile_UI_IrregularStations";
-import type { PlannedStation } from "../../common_util/common_util_structure_station";
+// 측점 계획 → 종단 측점 = logic(511-B B-3) — 부르는 쪽은 그대로 여기서 받음
+export { plannedIrregular } from "./logic/design_planted_base";
 import { useDesignStore, type DesignStoreValues } from "./design_store";
 
-/**
- * 측점 계획 → 종단 측점(측점번호 · 잔여거리 = 간격 기준) — 기준 측점 id = 첫 주인 id(관 = `pipe-…` ·
- * 구조물 = structure_id) · 시작 · 끝 = `{id}:{역할}`(옮겨도 계획고 편집이 따라감 · 272) · 관 기준 측점 =
- * 「배관」 꼴(관 끌기 · 지우기 길).
- */
-export function plannedIrregular(
-  planned: ReadonlyArray<PlannedStation>,
-  intervalM: number,
-): IrregularStation[] {
-  const interval = intervalM > 0 ? intervalM : 20;
-  return planned.map((station) => {
-    const owner = station.owners[0];
-    const pipe = owner.startsWith("pipe-") && station.role === "anchor";
-    const number = Math.floor(station.chainage_m / interval);
-    return {
-      id: station.role === "anchor" ? owner : `${owner}:${station.role}`,
-      station: number,
-      remainder: station.chainage_m - number * interval,
-      chainage_m: station.chainage_m,
-      structure: station.title,
-      ...(pipe ? { structureType: "배관" as const, origin: "pipe" as const } : {}),
-    };
-  });
-}
-
 /**
  * 바뀜 신호 하나(323-6) — 관 · 구조물 · 추가 측점 초안을 구독(어느 길로 쓰든 설계 가게 한 곳). 구조물 = 늘 · 관 = 자리 · 종류 ·
  * 구간 · 잇기가 바뀔 때만(옵션만 고친 것은 폼 길 `applyPipeOptions` 가 그 카드만 고침 — 카드 줌 · 팬 지킴).
diff --git a/A00_Common/design/logic/design_calc_node.ts b/A00_Common/design/logic/design_calc_node.ts
index 8477b25b8..e1717038e 100644
--- a/A00_Common/design/logic/design_calc_node.ts
+++ b/A00_Common/design/logic/design_calc_node.ts
@@ -16,8 +16,11 @@
  *          chainage_m? }] · facilities?: { pipes · structures }(시설 구간 · 511-B B-4) } ·
  *          berm?: { structures: 구조물 정본 목록 · chainages: [측점 m] } ·
  *          rebase? · carry?(노선 바뀐 [저장] · `design_calc_node_carry.ts`) ·
+ *          profile? · carry_profile?(종단 · `design_calc_node_profile.ts` · 511-B B-3) ·
  *          definition? · attach? · cross_enforce?(형상 얹기 · [저장] 횡단 · `design_calc_node_cross.ts` · 511-B B-4) ·
- *          stages?(묶음 단계 · `design_calc_node_stages.ts` · 511-B) } }
+ *          stages?(묶음 단계 · `design_calc_node_stages.ts` · 511-B) ·
+ *          stations?(측점 · `design_calc_node_sections.ts` · 511-B B-2) ·
+ *          route_polyline?(노선 · `design_calc_node_route.ts` · 511-B B-5) } }
  *   출력  { results: { [id]: 값 }, available: [id…] }
  *         — 차례는 요청 차례가 아니라 기댐 차례(누가토량 앞에 구조물 면적을 상세에 얹음 ·
  *           server-calc 묶음과 같은 차례).
@@ -52,12 +55,24 @@ import {
 import { carryRunners, type CarryInputs } from "./design_calc_node_carry";
 import { crossRunners, PAGE_IDS, useDefinition, type CrossInputs } from "./design_calc_node_cross";
 import { followRunners, type FollowInputs } from "./design_calc_node_follow";
+import { profileRunners, type ProfileInputs } from "./design_calc_node_profile";
+import { routeRunners, type RouteInputs } from "./design_calc_node_route";
+import { sectionsRunners, type SectionsInputs } from "./design_calc_node_sections";
 import { STAGE_IDS, stageRunners, type StagesInputs } from "./design_calc_node_stages";
 import { TRIAL_IDS, trialRunners, type TrialInputs } from "./design_calc_node_trial";
 
 type HaulOptions = NonNullable<Parameters<typeof computeHaulPlan>[2]>;
 
-interface CalcInputs extends FollowInputs, CarryInputs, CrossInputs, TrialInputs, StagesInputs {
+interface CalcInputs
+  extends
+    FollowInputs,
+    ProfileInputs,
+    CarryInputs,
+    CrossInputs,
+    TrialInputs,
+    StagesInputs,
+    SectionsInputs,
+    RouteInputs {
   detail?: SectionDetailResponse;
   route_points?: RoutePoint[];
   context?: Partial<
@@ -110,10 +125,13 @@ async function runDesignCalc(run: readonly string[], inputs: CalcInputs) {
 
   const RUNNERS: Record<string, () => unknown> = {
     ...followRunners(inputs), // 측점 열쇠 · 따라감 · 꼭짓점 세움(472-4 ①)
+    ...profileRunners(inputs), // 첫 계획선 · 계획선 짓기 · 계획고 옮김(511-B B-3)
     ...carryRunners(inputs), // 노선 바뀐 [저장] 다시 얹기 — 관 · 구조물 초안 · 횡단 고침(472-6 6-B)
     ...trialRunners(inputs), // 계산 자리 「서버」 시험 길(511-A)
     ...stageRunners(inputs), // 묶음 단계 노선 ~ 횡단(511-B B-1)
     ...crossRunners(inputs), // 형상 얹기 · [저장] 횡단 한 바퀴(511-B B-4)
+    ...sectionsRunners(inputs), // 측점 목록 · 서버 측점 생성(511-B B-2)
+    ...routeRunners(inputs), // 노선 폴리라인 · 곡선표(511-B B-5)
     // 구조물 측점 면적 · 관 길이를 상세에 얹음(자리에서) — 뒤 누가토량이 고친 면적 위에서 쌓임.
     "structure.layouts": () => {
       const areas = structureAreaRows(sections);
diff --git a/A00_Common/design/logic/design_calc_node_follow.ts b/A00_Common/design/logic/design_calc_node_follow.ts
index f6ce41a40..6433bb29a 100644
--- a/A00_Common/design/logic/design_calc_node_follow.ts
+++ b/A00_Common/design/logic/design_calc_node_follow.ts
@@ -7,12 +7,15 @@
  *                 base_pvi(옮기기 전) · base(옮긴 꼭짓점) · born · held } → 꼭짓점 목록(`seatBornNodes`)
  *   facility.follow  입력 follow { items: [{ placement · chainage_m · start_m · end_m · x · y }] · line ·
  *                 max_drift_m · interval_m(site 맞춤 간격) } → [{ item · drift_m · far }](`followStructures`)
+ *                 — follow.fill { previous?: { structure_id: 항목 } · only_missing } 있으면 = 저장 좌표 맞춤(같은 F1 ·
+ *                 511-B B-5) → { xy: [{ x · y } | null(그대로)] · filled }(`fillStructureCoordinates` · items 에 structure_id)
  *   facility.plus_follow  입력 plus { rows: [{ chainage_m · x · y }] · line: [[x, y]](새 노선) } →
  *                 { rows: [{ chainage_m · x · y }](`followPlusRows` · 정수 m · 같은 m 하나) · moved: 옮긴 수 }
  * ========================================================================== */
 
 import { seatBornNodes } from "../../../B05_Profile/logic/B05_Profile_Grade_Seat";
 import {
+  fillStructureCoordinates,
   followPlusRows,
   followStructures,
   type FollowingStructure,
@@ -27,10 +30,11 @@ const xyOf = (line: Line) => line.map(([x, y]) => ({ x, y }));
 
 export interface FollowInputs {
   follow?: {
-    items: FollowingStructure[];
+    items: Array<FollowingStructure & { structure_id?: string | null }>;
     line: Line;
     max_drift_m?: number;
     interval_m?: number | null;
+    fill?: { previous?: Record<string, FollowingStructure> | null; only_missing?: boolean };
   };
   plus?: { rows: Array<{ chainage_m: number; x?: number | null; y?: number | null }>; line: Line };
   seat?: {
@@ -61,6 +65,14 @@ export function followRunners(inputs: FollowInputs): Record<string, () => unknow
     "facility.follow": () => {
       const follow = inputs.follow;
       if (!follow) return null;
+      if (follow.fill)
+        return fillStructureCoordinates(
+          follow.items,
+          xyOf(follow.line),
+          follow.fill.previous ?? null,
+          follow.fill.only_missing ?? false,
+          follow.interval_m ?? null,
+        );
       return followStructures(
         follow.items,
         xyOf(follow.line),
diff --git a/A00_Common/design/logic/design_calc_node_profile.ts b/A00_Common/design/logic/design_calc_node_profile.ts
new file mode 100644
index 000000000..834190246
--- /dev/null
+++ b/A00_Common/design/logic/design_calc_node_profile.ts
@@ -0,0 +1,118 @@
+/* =============================================================================
+ * A00_Common/design/logic/design_calc_node_profile.ts
+ * 계산 Node 입구(`design_calc_node.ts`)의 종단 몫(PLAN 511-B B-3) — 첫 계획선 꼭짓점 · 계획선 짓기 ·
+ * 노선 바뀜 계획고 옮김. 브라우저 묶음이 쓰는 같은 TS · 파이썬은 `B05_Profile_Engine_Grade_Node.py` 로
+ * (늘 떠 있는 Node · 출력 = 반올림 전 값 · 정본 꼴 0.000001 m 는 파이썬이 적음).
+ *
+ *   profile.base       입력 profile { chainage · ground(파이썬 `ground_profile`) · policy(`AlignmentPolicy.as_dict`) ·
+ *                      ground_following { stations: [측점 m] · start_offset_m · end_offset_m } } →
+ *                      꼭짓점(`groundFollowingNodes` · 반올림 전) · 못 서는 땅 null(파이썬 2~4 순위)
+ *   profile.alignment  입력 profile { chainage · ground · stations: [{ station_id · chainage_m }] · policy ·
+ *                      base_pvi(없으면 profile.base 출력) · edits · only_explicit_curves } → `buildAlignment`
+ *   profile.carry      입력 carry_profile { old_xy · new_xy · old_base · edits · stations · half_m ·
+ *                      seat?{ ground_s · ground_z · policy · base_pvi · born } } →
+ *                      { edits(`carryEdits`) · base_pvi(`seatRouteMoved` · 높이 고친 측점 = 옮긴 편집 열쇠) }
+ * ========================================================================== */
+
+import {
+  buildAlignment,
+  emptyEdits,
+  type AlignmentEdits,
+  type AlignmentNode,
+  type AlignmentPolicy,
+} from "../../../B05_Profile/logic/B05_Profile_UI_Profile_Alignment";
+import { groundFollowingNodes } from "../../../B05_Profile/logic/B05_Profile_Grade_Ground";
+import { carryEdits } from "../../../B05_Profile/logic/B05_Profile_Grade_Carry";
+import { seatRouteMoved } from "../../../B05_Profile/logic/B05_Profile_Pipeline_Grade";
+
+type Line = Array<[number, number]>;
+const xyOf = (line: Line) => line.map(([x, y]) => ({ x, y }));
+
+export interface ProfileInputs {
+  profile?: {
+    chainage: number[];
+    ground: number[];
+    policy: AlignmentPolicy;
+    stations?: Array<{ station_id: string | null; chainage_m: number }>;
+    base_pvi?: AlignmentNode[] | null;
+    edits?: AlignmentEdits | null;
+    only_explicit_curves?: boolean;
+    ground_following?: { stations: number[]; start_offset_m?: number; end_offset_m?: number };
+  };
+  carry_profile?: {
+    old_xy: Line;
+    new_xy: Line;
+    old_base: AlignmentNode[];
+    edits?: Partial<AlignmentEdits> | null;
+    stations: number[];
+    half_m: number;
+    seat?: {
+      ground_s: number[];
+      ground_z: number[];
+      policy: AlignmentPolicy;
+      base_pvi: AlignmentNode[];
+      born: number[];
+    } | null;
+  };
+}
+
+/** id → 셈(입구 `RUNNERS` 에 얹음) — 계획선은 꼭짓점이 없으면 같은 요청의 첫 계획선 꼭짓점 위. */
+export function profileRunners(inputs: ProfileInputs): Record<string, () => unknown> {
+  let nodes: AlignmentNode[] | null | undefined;
+  const base = (): AlignmentNode[] | null => {
+    const profile = inputs.profile;
+    const follow = profile?.ground_following;
+    if (nodes === undefined)
+      nodes =
+        profile && follow
+          ? groundFollowingNodes(profile.chainage, profile.ground, {
+              stations: follow.stations,
+              policy: profile.policy,
+              startOffsetM: follow.start_offset_m ?? 0,
+              endOffsetM: follow.end_offset_m ?? 0,
+            })
+          : null;
+    return nodes;
+  };
+  return {
+    "profile.base": base,
+    "profile.alignment": () => {
+      const profile = inputs.profile;
+      const basePvi = profile?.base_pvi ?? base();
+      if (!profile || !basePvi) return null;
+      return buildAlignment(
+        {
+          policy: profile.policy,
+          onlyExplicitCurves: profile.only_explicit_curves === true,
+          basePvi,
+          chainage: profile.chainage,
+          ground: profile.ground,
+          stations: profile.stations ?? [],
+        },
+        profile.edits ?? emptyEdits(),
+      );
+    },
+    "profile.carry": () => {
+      const carry = inputs.carry_profile;
+      if (!carry) return null;
+      const edits = carryEdits(
+        xyOf(carry.old_xy),
+        xyOf(carry.new_xy),
+        carry.old_base,
+        carry.edits,
+        carry.stations,
+        carry.half_m,
+      );
+      const seat = carry.seat;
+      if (!seat) return { edits, base_pvi: null };
+      const held = Object.keys(edits.station_offsets).map(Number);
+      const base = {
+        chainage: seat.ground_s,
+        ground: seat.ground_z,
+        policy: seat.policy,
+        basePvi: seat.base_pvi,
+      };
+      return { edits, base_pvi: seatRouteMoved(base, seat.born, held) };
+    },
+  };
+}
diff --git a/A00_Common/design/logic/design_calc_node_route.ts b/A00_Common/design/logic/design_calc_node_route.ts
new file mode 100644
index 000000000..af3bf7746
--- /dev/null
+++ b/A00_Common/design/logic/design_calc_node_route.ts
@@ -0,0 +1,59 @@
+/* =============================================================================
+ * A00_Common/design/logic/design_calc_node_route.ts
+ * 계산 Node 입구(`design_calc_node.ts`)의 노선 몫(PLAN 511-B B-5) — 화면 노선 편집과 같은 TS.
+ *
+ *   route.polyline  입력 route_polyline { points · curve_flags · radii · locks · arcs · min_radius_m } →
+ *                   { cleaned: 겹친 점(0.5 m) 뺀 노드 · nodes: 노드 요약(cleaned 자리) · vertices: 선 ·
+ *                   curves: 곡선(node_first · last = cleaned 자리) · edits: 곡선표 편집표 }
+ *                   — 서버 노선 저장 `_write_planned_polyline`(편집 갈래 · 파이썬은 파일 꼴 반올림만)
+ * ========================================================================== */
+
+import {
+  buildEditedPolyline,
+  DUPLICATE_TOLERANCE_M,
+  type Vertex,
+} from "../../../B05_Profile/logic/B05_Profile_UI_RouteEdit_Curve";
+import { nodeEdits } from "../../../B05_Profile/logic/B05_Profile_UI_RouteEdit_Edits";
+
+export interface RouteInputs {
+  route_polyline?: {
+    points: Vertex[];
+    curve_flags?: Array<boolean | null> | null;
+    radii?: Array<number | null> | null;
+    locks?: Array<string | null> | null;
+    arcs?: Array<number | null> | null;
+    min_radius_m: number;
+  };
+}
+
+/** id → 셈(입구 `RUNNERS` 에 얹음). */
+export function routeRunners(inputs: RouteInputs): Record<string, () => unknown> {
+  return {
+    "route.polyline": () => {
+      const at = inputs.route_polyline;
+      if (!at) throw new Error("노선 입력(route_polyline) 없음");
+      const flags = at.curve_flags ?? null;
+      const radii = at.radii ?? null;
+      // 겹친 점을 편집값과 함께 거름 — 곡선 자리 번호 = 저장 노드 자리(파이썬 `build_planned_polyline`)
+      const cleaned: Vertex[] = [];
+      const on: boolean[] = [];
+      const forced: Array<number | null> = [];
+      at.points.forEach((point, index) => {
+        const last = cleaned[cleaned.length - 1];
+        if (last && Math.hypot(point[0] - last[0], point[1] - last[1]) <= DUPLICATE_TOLERANCE_M)
+          return;
+        cleaned.push(point);
+        on.push(flags && index < flags.length ? Boolean(flags[index]) : true);
+        forced.push(radii && index < radii.length ? radii[index] : null);
+      });
+      const line = buildEditedPolyline(cleaned, on, forced, at.min_radius_m);
+      return {
+        cleaned,
+        nodes: line.nodes,
+        vertices: line.vertices,
+        curves: line.curves,
+        edits: nodeEdits(at.points, flags, radii, at.locks ?? null, at.arcs ?? null),
+      };
+    },
+  };
+}
diff --git a/A00_Common/design/logic/design_calc_node_sections.ts b/A00_Common/design/logic/design_calc_node_sections.ts
new file mode 100644
index 000000000..0251ab16a
--- /dev/null
+++ b/A00_Common/design/logic/design_calc_node_sections.ts
@@ -0,0 +1,99 @@
+/* =============================================================================
+ * A00_Common/design/logic/design_calc_node_sections.ts
+ * 계산 Node 입구(`design_calc_node.ts`)의 측점 몫(PLAN 511-B B-2) — 화면 묶음 stations 단계와 같은 TS.
+ *
+ *   stations.list      입력 stations { line · curves · pipes · structures · types · definition? · plus ·
+ *                      interval_m · include_endpoint? · station_snap · station_snap_step } →
+ *                      측점 목록(`buildStations` · 열쇠 · 종류 · 반경 · 확폭 · 지반 null) — 계산 자리 「서버」 ·
+ *                      노선 저장 옛 노선 열쇠
+ *   stations.sections  같은 입력 + grid(DTM 격자 이진 경로) · 표본 간격 → 서버 `generate_sections` 꼴
+ *                      (`generateSections`) — 서버 측점 생성 길만(창구 `/calc` 는 막음 · 경로 입력)
+ *   stations.plan      입력 stations { types · definition? · plan: [{ pipes · structures · plus }] } → 묶음마다
+ *                      측점 계획(`planStations`) — 서버 남은 부름(이월 열쇠 주인 · 옛 측점 옮기기 · 511-B B-5)
+ * definition = 구조물 정의(`{types, …정의}` · 화면 `fetchStructureTypes` 와 같은 꼴) — 심는 측점 · 카드 이름 표.
+ * ========================================================================== */
+
+import { useCatalogDefinition, type CatalogDefinition } from "@util/common_util_structure_catalog";
+import {
+  planStations,
+  type PlanPipe,
+  type PlanStructure,
+  type PlanType,
+} from "@util/common_util_structure_station";
+import { buildStations } from "../../../B05_Profile/logic/B05_Profile_Sections_Stations";
+import { generateSections } from "../../../B05_Profile/logic/B05_Profile_Sections_Generate";
+import type { DesignCurve, Vertex } from "./design_pipeline_types";
+import { gridAt } from "./design_calc_node_stages";
+
+export interface SectionsInputs {
+  stations?: {
+    line: Vertex[];
+    curves?: DesignCurve[];
+    pipes?: PlanPipe[];
+    structures?: PlanStructure[];
+    types: PlanType[];
+    definition?: CatalogDefinition | null;
+    plus?: number[];
+    interval_m?: number;
+    include_endpoint?: boolean;
+    station_snap?: boolean;
+    station_snap_step?: number | null;
+    grid?: string;
+    cross_half_width_m?: number;
+    cross_sample_interval_m?: number;
+    long_sample_interval_m?: number;
+    plan?: Array<{ pipes?: PlanPipe[]; structures?: PlanStructure[]; plus?: number[] }>;
+  };
+}
+
+/** id → 셈(입구 `RUNNERS` 에 얹음). */
+export function sectionsRunners(inputs: SectionsInputs): Record<string, () => unknown> {
+  const args = () => {
+    const at = inputs.stations;
+    if (!at) throw new Error("측점 입력(stations) 없음");
+    if (at.definition !== undefined) useCatalogDefinition(at.definition);
+    const options = {
+      intervalM: at.interval_m,
+      includeEndpoint: at.include_endpoint,
+      stationSnap: at.station_snap ?? false,
+      stationSnapStep: at.station_snap_step ?? null,
+      types: at.types,
+      plus: at.plus ?? [],
+      crossHalfWidthM: at.cross_half_width_m,
+      crossSampleIntervalM: at.cross_sample_interval_m,
+      longSampleIntervalM: at.long_sample_interval_m,
+    };
+    return { at, options };
+  };
+  return {
+    "stations.list": () => {
+      const { at, options } = args();
+      return buildStations(at.line, at.curves ?? [], at.pipes ?? [], at.structures ?? [], options);
+    },
+    "stations.plan": () => {
+      const { at } = args();
+      return (at.plan ?? []).map((group) =>
+        planStations(
+          group.pipes ?? [],
+          group.structures ?? [],
+          at.types,
+          undefined,
+          group.plus ?? [],
+        ),
+      );
+    },
+    "stations.sections": () => {
+      const { at, options } = args();
+      if (!at.grid) throw new Error("DTM 격자 없음 — DTM 아닌 지표면은 파이썬 길");
+      const grid = gridAt(at.grid);
+      return generateSections(
+        at.line,
+        at.curves ?? [],
+        at.pipes ?? [],
+        at.structures ?? [],
+        grid,
+        options,
+      );
+    },
+  };
+}
diff --git a/A00_Common/design/logic/design_calc_node_stages.ts b/A00_Common/design/logic/design_calc_node_stages.ts
index c394c75d1..df21c873b 100644
--- a/A00_Common/design/logic/design_calc_node_stages.ts
+++ b/A00_Common/design/logic/design_calc_node_stages.ts
@@ -43,7 +43,7 @@ import { readAlignment } from "../../../B05_Profile/logic/B05_Profile_UI_Profile
 import type { SectionDetailResponse } from "../../../B06_Section/B06_Section_Api_Fetch";
 import { createCrossStage } from "../../../B06_Section/logic/B06_Section_Cross_Stage";
 import { pipeBook } from "../../../B06_Section/B06_Section_Route_Carry_Patch";
-import { plantedBase } from "../design_pipeline_base";
+import { plantedBase } from "./design_planted_base";
 import { createDesignPipeline } from "./design_pipeline";
 import { contextCross, placedFollowInputs } from "./design_pipeline_stage_inputs";
 import { createStationsStage, snapOptions } from "./design_pipeline_stations";
@@ -152,7 +152,10 @@ async function runStages(
         remote: () => Promise.reject(new Error("DTM 격자 없음 — 서버 표본 길은 파이썬")),
       }),
       planline: createPlanlineStage({
-        savedBase: (at) => plantedBase({ base: null, detail }, at, types, book.at),
+        savedBase: (at) =>
+          plantedBase({ base: null, detail }, at, types, (pipes) =>
+            pipes.map((pipe) => ({ ...pipe, id: book.at(pipe.chainage_m) })),
+          ),
         savedLine,
         storedPvi: () => (stored ? toAlignmentBase(stored).basePvi : null),
       }),
diff --git a/A00_Common/design/logic/design_calc_registry.ts b/A00_Common/design/logic/design_calc_registry.ts
index 17e250d21..5e7877080 100644
--- a/A00_Common/design/logic/design_calc_registry.ts
+++ b/A00_Common/design/logic/design_calc_registry.ts
@@ -64,11 +64,10 @@ export const CALC_REGISTRY: readonly CalcEntry[] = [
     site: "browser_now",
     stage: "route",
     ts: `${B05L}B05_Profile_UI_RouteEdit_Curve.ts#buildEditedPolyline`,
-    runner: `py:${U}common_util_route_polyline.py#build_planned_polyline`,
-    until: "472-4",
+    runner: "node:route.polyline",
     pair: `${U}common_util_route_polyline.py#build_planned_polyline`,
-    mirror: ["test_route_polyline_browser_mirror"],
-    note: "파이썬 짝은 추천 엔진 · B04 배수 · 노선 확인이 부름 — 짝 남음",
+    mirror: ["test_route_polyline_browser_mirror", "test_511_b5_route_node"],
+    note: "서버 노선 저장(편집 갈래 · `_write_planned_polyline`) = Node · 파이썬 짝은 첫 폴리라인(단순화) · 추천 엔진 · B04 배수 · 노선 열기가 부름 — 짝 남음 · 알려진 차 = 교각 딱 5° 배수면 원호 점 ±1(libm 끝자리 · 실데이터 0 차)",
   },
   {
     id: "route.handle",
@@ -92,10 +91,10 @@ export const CALC_REGISTRY: readonly CalcEntry[] = [
     site: "browser_now",
     stage: "route",
     ts: `${B05L}B05_Profile_UI_RouteEdit_Edits.ts#applyCurveLimits`,
-    runner: `py:${B05}B05_Profile_Route_NodeEdits.py#node_edits`,
-    until: "472-4",
+    runner: "node:route.polyline",
     pair: `${B05}B05_Profile_Route_NodeEdits.py#node_edits`,
-    mirror: ["test_430_route_edit_rules"],
+    mirror: ["test_430_route_edit_rules", "test_511_b5_route_node"],
+    note: "곡선표 편집표 = Node `route.polyline` 의 `nodeEdits` · 파이썬 짝 = Node 못 돌릴 때",
   },
   {
     id: "route.station_fit",
@@ -121,10 +120,14 @@ export const CALC_REGISTRY: readonly CalcEntry[] = [
     site: "browser_now",
     stage: "stations",
     ts: `${B05L}B05_Profile_UI_RouteEdit_Frame.ts#stationFrameAt`,
-    runner: `py:${B05}B05_Profile_Engine_Sections_Core.py#generate_sections`,
-    until: "472-4",
+    runner: "node:stations.list",
     pair: `${B05}B05_Profile_Engine_Sections_Core.py#generate_sections`,
-    mirror: ["test_b05_routeedit_frame_mirror", "test_224_2_station_snap"],
+    mirror: [
+      "test_b05_routeedit_frame_mirror",
+      "test_224_2_station_snap",
+      "test_511_b2_stations_node",
+    ],
+    note: "서버 측점 생성 = Node `stations.sections`(DTM) · 파이썬 짝 = DTM 아닌 지표면 · 추천 엔진 · B06 측점 맞춤",
   },
   {
     id: "stations.list",
@@ -143,11 +146,14 @@ export const CALC_REGISTRY: readonly CalcEntry[] = [
     site: "browser_now",
     stage: "stations",
     ts: `${B05L}B05_Profile_Sections_Stations.ts#buildStations`,
-    runner: `py:${B05}B05_Profile_Engine_Sections_Core.py#generate_sections`,
-    until: "472-4",
+    runner: "node:stations.list",
     pair: `${B05}B05_Profile_Engine_Sections_Core.py#generate_sections`,
-    mirror: ["test_344_3_pipeline_stations_mirror", "test_407_curve_station"],
-    note: "파이썬 짝은 B03 체인 · B07 IP 표 · 추천도 부름",
+    mirror: [
+      "test_344_3_pipeline_stations_mirror",
+      "test_407_curve_station",
+      "test_511_b2_stations_node",
+    ],
+    note: "서버 측점 생성 길(B03 체인 · 노선 저장 · 재생성 · 추천 초기 종단) = Node `stations.sections`(DTM) · 파이썬 짝 = DTM 아닌 지표면 · B07 IP 표 · 추천 엔진",
   },
   {
     id: "stations.key",
@@ -158,11 +164,10 @@ export const CALC_REGISTRY: readonly CalcEntry[] = [
     site: "browser_now",
     stage: "stations",
     ts: `${U}common_util_station_key.ts#stationKey`,
-    runner: `py:${U}common_util_station_key.py#station_key`,
-    until: "472-4",
+    runner: "node:stations.list",
     pair: `${U}common_util_station_key.py#station_key`,
-    mirror: ["test_344_3_station_key_mirror"],
-    note: "서버 열쇠(Route_Save_Parts.station_keys)는 주인 = 파이썬 plan_stations(F3 · 카탈로그) · 부르는 곳 = 노선 저장 이월(③) — ③ · F3 와 같이 Node 로",
+    mirror: ["test_344_3_station_key_mirror", "test_511_b2_stations_node"],
+    note: "노선 저장 이월 열쇠 = Node 측점 출력(`key` · 옛 노선 = `stations.list`) · 파이썬 짝 = 옛 열쇠 꼴 읽기(at: · 누가거리)",
   },
   {
     id: "stations.swap",
@@ -245,10 +250,10 @@ export const CALC_REGISTRY: readonly CalcEntry[] = [
     site: "browser_now",
     stage: "cross",
     ts: `${B05L}B05_Profile_Pipeline_Detail.ts#uphillSide`,
-    runner: `py:${B05}B05_Profile_Engine_Sections_Core.py#generate_sections`,
-    until: "472-4",
+    runner: "node:stations.sections",
     pair: `${B05}B05_Profile_Engine_Sections_Core.py#generate_sections`,
-    mirror: ["test_346_2_pipeline_cross_page"],
+    mirror: ["test_346_2_pipeline_cross_page", "test_511_b2_stations_node"],
+    note: "서버 측점 생성(DTM) = Node `stations.sections` 의 상단측 · DTM 아닌 지표면 = 파이썬 짝",
   },
   /* ── 종단 ─────────────────────────────────────────────────────────────── */
   {
@@ -260,11 +265,10 @@ export const CALC_REGISTRY: readonly CalcEntry[] = [
     site: "browser_now",
     stage: "planline",
     ts: `${B05L}B05_Profile_Grade_Ground.ts#groundFollowingBasePvi`,
-    runner: `py:${B05}B05_Profile_Engine_Grade_Profile.py#rebuild_alignment_profile`,
-    until: "472-4",
-    pair: `${B05}B05_Profile_Engine_Grade_Profile.py#rebuild_alignment_profile`,
-    mirror: ["test_344_2_route_pairs", "test_432_1_curve_law"],
-    note: "파이썬 짝은 추천 엔진(RouteInitial_Profile)도 씀 — 짝 남음",
+    runner: "node:profile.base",
+    pair: `${B05}B05_Profile_Engine_Grade_Profile.py#straight_pass_through`,
+    mirror: ["test_344_2_route_pairs", "test_432_1_curve_law", "test_511_b3_profile_node"],
+    note: "1순위 = Node(511-B B-3) · 못 서면 파이썬 2~4 순위(관 정착 · 직선 분할 · 정함) · 파이썬 짝 = 추천 엔진(RouteInitial_Profile) 몫",
   },
   {
     id: "profile.alignment",
@@ -275,15 +279,16 @@ export const CALC_REGISTRY: readonly CalcEntry[] = [
     site: "browser_now",
     stage: "profile",
     ts: `${B05L}B05_Profile_UI_Profile_Alignment.ts#buildAlignment`,
-    runner: `py:${B05}B05_Profile_Engine_Grade_Alignment.py#evaluate`,
-    until: "472-4",
-    pair: `${B05}B05_Profile_Engine_Grade_Alignment.py#evaluate`,
+    runner: "node:profile.alignment",
+    pair: `${B05}B05_Profile_Engine_Grade_Alignment.py#build_alignment`,
     mirror: [
       "test_426_profile_straight",
       "test_432_1_curve_law",
       "test_213_1_hidden_station_pvi",
       "test_438_1_initial_straighten",
+      "test_511_b3_profile_node",
     ],
+    note: "정본 꼴(0.000001 m) = 파이썬 `Engine_Grade_Node.alignment_record` · 파이썬 짝 = 2~4 순위 폴백 몫",
   },
   {
     id: "profile.curve_law",
@@ -294,8 +299,7 @@ export const CALC_REGISTRY: readonly CalcEntry[] = [
     site: "browser_now",
     stage: "profile",
     ts: `${B05L}B05_Profile_Profile_CurveLaw.ts#flatBends`,
-    runner: `py:${B05}B05_Profile_Engine_Grade_CurveLaw.py#flat_bends`,
-    until: "472-4",
+    runner: "node:profile.alignment",
     pair: `${B05}B05_Profile_Engine_Grade_CurveLaw.py#flat_bends`,
     mirror: ["test_432_1_curve_law"],
   },
@@ -308,8 +312,7 @@ export const CALC_REGISTRY: readonly CalcEntry[] = [
     site: "browser_now",
     stage: "profile",
     ts: `${B05L}B05_Profile_Profile_Straight.ts#isStraightBend`,
-    runner: `py:${B05}B05_Profile_Engine_Grade_Alignment.py#is_straight_bend`,
-    until: "472-4",
+    runner: "node:profile.alignment",
     pair: `${B05}B05_Profile_Engine_Grade_Alignment.py#is_straight_bend`,
     mirror: ["test_426_profile_straight", "test_271_straighten_pick"],
   },
@@ -322,10 +325,10 @@ export const CALC_REGISTRY: readonly CalcEntry[] = [
     site: "browser_now",
     stage: "follow",
     ts: `${B05L}B05_Profile_Grade_Carry.ts#carryEdits`,
-    runner: `py:${B05}B05_Profile_Engine_Grade_Carry.py#carry_edits`,
-    until: "472-4",
-    pair: `${B05}B05_Profile_Engine_Grade_Carry.py#carry_edits`,
-    mirror: ["test_400_profile_carry", "test_349_0v_route_save_span"],
+    runner: "node:profile.carry",
+    pair: null,
+    mirror: ["test_400_profile_carry", "test_349_0v_route_save_span", "test_511_b3_profile_node"],
+    note: "노선 [저장] = 꼭짓점 세움(`seatRouteMoved`)과 Node 한 부름(`Engine_Grade_Node.carry_seat`)",
   },
   {
     id: "profile.seat",
@@ -364,11 +367,10 @@ export const CALC_REGISTRY: readonly CalcEntry[] = [
     site: "browser_now",
     stage: null,
     ts: `${B05L}B05_Profile_Profile_CurveLaw.ts#verticalCurveShortfalls`,
-    runner: `py:${B05}B05_Profile_Engine_Grade.py#resolve_grade_options`,
-    until: "472-4",
+    runner: "node:profile.alignment",
     pair: `${B05}B05_Profile_Engine_Grade.py#resolve_grade_options`,
     mirror: ["test_442_2_grade_limit_mirror"],
-    note: "X5 — 기준표 두 벌(화면 PROFILE_CRITERIA · 서버 FOREST_ROAD_PROFILE_CRITERIA)",
+    note: "경고 = 계획선 짓기 안 · 기준표 TS = `logic/B05_Profile_Grade_Criteria.ts`(X5 · 파이썬 표는 추천 · 폴백 몫 · 거울 442_2)",
   },
   /* ── 횡단 ─────────────────────────────────────────────────────────────── */
   {
diff --git a/A00_Common/design/logic/design_calc_registry_facility.ts b/A00_Common/design/logic/design_calc_registry_facility.ts
index 6ff6ef648..1cbdb0d53 100644
--- a/A00_Common/design/logic/design_calc_registry_facility.ts
+++ b/A00_Common/design/logic/design_calc_registry_facility.ts
@@ -30,8 +30,9 @@ export const FACILITY_ROWS: readonly CalcEntry[] = [
       "test_459_route_seat_mirror",
       "test_380_3_site_follow",
       "test_472_4_follow_node",
+      "test_511_b5_route_node",
     ],
-    note: "파이썬 `common_util_route_follow.follow_structures` = Node 부름 겉 · 저장 때 좌표 맞춤 `fill_structure_coordinates` 는 파이썬 남음(옛 좌표 지킴 · 0.1 mm 반올림 — TS `placeOnLine` 과 규칙 다름)",
+    note: "파이썬 `common_util_route_follow.follow_structures` = Node 부름 겉 · 저장 때 좌표 맞춤 `fill_structure_coordinates` = 같은 Node 입구 + fill(`fillStructureCoordinates` · 옛 좌표 지킴 · 0.1 mm · `placeOnLine` 노선 위 자리와 한 벌 · 511-B B-5)",
   },
   {
     id: "facility.plus_follow",
@@ -70,11 +71,10 @@ export const FACILITY_ROWS: readonly CalcEntry[] = [
     site: "browser_now",
     stage: "stations",
     ts: `${U}common_util_structure_station.ts#planStations`,
-    runner: `py:${U}common_util_structure_station.py#plan_stations`,
-    until: "472-4",
+    runner: "node:stations.plan",
     pair: `${U}common_util_structure_station.py#plan_stations`,
-    mirror: ["test_322_3_plan_mirror", "test_234_1_structure_station"],
-    note: "파이썬 짝은 B07 · 배수가 넓게 부름",
+    mirror: ["test_322_3_plan_mirror", "test_234_1_structure_station", "test_511_b5_route_node"],
+    note: "서버 측점 생성 = Node `stations.sections` · 남은 부름(이월 열쇠 주인 · 옛 측점 옮기기) = Node `stations.plan` · 파이썬 짝은 B06 형상 얹기 · B07 · 배수 · Node 못 돌릴 때",
   },
   {
     id: "facility.attach",
diff --git a/A00_Common/design/logic/design_pipeline_stations.ts b/A00_Common/design/logic/design_pipeline_stations.ts
index 053a4d96b..873d1d92a 100644
--- a/A00_Common/design/logic/design_pipeline_stations.ts
+++ b/A00_Common/design/logic/design_pipeline_stations.ts
@@ -61,18 +61,27 @@ export function snapOptions(
   };
 }
 
-/** stations 단계 — 입력 관 · 구조물(follow 뒤 누가거리) · 그린 노선 · 곡선표 · 스냅(초안 · 없으면 저장 노선). */
+/** `buildStations` 인자 한 벌 — 화면 셈 · 서버 셈(계산 자리 「서버」)이 같은 값을 받음. */
+export type StationsArgs = Parameters<typeof buildStations>;
+
+/** stations 단계 — 입력 관 · 구조물(follow 뒤 누가거리) · 그린 노선 · 곡선표 · 스냅(초안 · 없으면 저장 노선).
+ *  `remote` = 계산 자리 「서버」면 서버 Node 값(같은 `buildStations` · 511-B B-2) · null = 화면 셈 · 서버가
+ *  못 내면(끊김 · 실패) 화면 셈. */
 export function createStationsStage(
   options: Omit<StationsOptions, "stationSnap" | "stationSnapStep" | "types"> & {
     types: () => ReadonlyArray<PlanType>;
     saved?: () => SavedSnap | null;
+    remote?: (
+      args: StationsArgs,
+      signal: AbortSignal,
+    ) => Promise<PipelineStation[] | undefined> | null;
   },
 ): StageFn<"stations"> {
-  const { saved, ...rest } = options;
+  const { saved, remote, ...rest } = options;
   return (ctx: StageContext<"stations">) => {
     const route = ctx.out.route;
     if (!route) return [];
-    const next = buildStations(
+    const args: StationsArgs = [
       route.line,
       route.curves,
       (ctx.inputs.pipes as PlanPipe[] | null) ?? [],
@@ -83,8 +92,11 @@ export function createStationsStage(
         ...snapOptions(ctx.inputs.route, saved?.()),
         plus: ctx.inputs.plusStations ?? undefined, // follow 가 옮긴 추가 측점(459 · 가게보다 먼저)
       },
-    );
-    return reuseOutside(next, ctx.prev, ctx.range);
+    ];
+    const done = (next: PipelineStation[] | undefined) =>
+      reuseOutside(next ?? buildStations(...args), ctx.prev, ctx.range);
+    const asked = remote?.(args, ctx.signal);
+    return asked ? asked.then(done) : done(undefined); // 화면 셈 = 동기 그대로
   };
 }
 
diff --git a/A00_Common/design/logic/design_planted_base.ts b/A00_Common/design/logic/design_planted_base.ts
new file mode 100644
index 000000000..e721c6033
--- /dev/null
+++ b/A00_Common/design/logic/design_planted_base.ts
@@ -0,0 +1,108 @@
+/* =============================================================================
+ * A00_Common/design/logic/design_planted_base.ts
+ * 묶음 planline 의 저장 노선 종단 기준(PLAN 386-3) 셈 몫 — 화면 · 가게 · 세션 없는 순수(511-B B-3 · 서버 Node
+ * 묶음 `design_calc_node_stages.ts` 도 같은 셈). 페이지 겉 = `design_pipeline_base.ts`(관 id = 세션 장부) ·
+ * `design_profile_base.ts` · `design_structure_status.ts` 가 다시 내보냄.
+ *
+ * 종단도 `listed()`(design_profile)와 같은 셈 — 저장 상세 측점 + 구조물 · 관이 심는 측점(`listedBase`).
+ * 심는 측점 = 종단 보기 구조물 칸(`syncCrossDrainStations`) · 횡단 보기(`planMarkStations`)와 같은
+ * `planStations` → `plannedIrregular` — 보기가 종단도에 늦게 심어도 묶음은 다시 안 돎.
+ * ========================================================================== */
+
+import type { SectionDetailResponse } from "../../../B06_Section/B06_Section_Api_Fetch";
+import type { AlignmentBase } from "../../../B05_Profile/logic/B05_Profile_UI_Profile_Alignment";
+import { toAlignmentBase } from "../../../B05_Profile/logic/B05_Profile_UI_Profile_Alignment";
+import type { IrregularStation } from "../../../B05_Profile/B05_Profile_UI_IrregularStations";
+import {
+  irregularGraphStations,
+  maxChainageOf,
+} from "../../../B05_Profile/logic/B05_Profile_Profile_Planted";
+import {
+  followMovedNodes,
+  oneStationList,
+  planStations,
+  type PlannedStation,
+  type PlanType,
+} from "../../../common_util/common_util_structure_station";
+import { readAlignment } from "../../../B05_Profile/logic/B05_Profile_UI_Profile_Data";
+import { seatBornNodes } from "../../../B05_Profile/logic/B05_Profile_Grade_Seat";
+import type { PipelineInputs } from "./design_pipeline_types";
+
+/**
+ * 측점 계획 → 종단 측점(측점번호 · 잔여거리 = 간격 기준) — 기준 측점 id = 첫 주인 id(관 = `pipe-…` ·
+ * 구조물 = structure_id) · 시작 · 끝 = `{id}:{역할}`(옮겨도 계획고 편집이 따라감 · 272) · 관 기준 측점 =
+ * 「배관」 꼴(관 끌기 · 지우기 길).
+ */
+export function plannedIrregular(
+  planned: ReadonlyArray<PlannedStation>,
+  intervalM: number,
+): IrregularStation[] {
+  const interval = intervalM > 0 ? intervalM : 20;
+  return planned.map((station) => {
+    const owner = station.owners[0];
+    const pipe = owner.startsWith("pipe-") && station.role === "anchor";
+    const number = Math.floor(station.chainage_m / interval);
+    return {
+      id: station.role === "anchor" ? owner : `${owner}:${station.role}`,
+      station: number,
+      remainder: station.chainage_m - number * interval,
+      chainage_m: station.chainage_m,
+      structure: station.title,
+      ...(pipe ? { structureType: "배관" as const, origin: "pipe" as const } : {}),
+    };
+  });
+}
+
+/** 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 지우고 새 측점엔 세움(`followMovedNodes` · `seatBornNodes` · 427) ·
+ *  늘 저장분에서 셈. 심은 측점이 아직 없으면(null · 시설 줄 입력 전) 저장분 그대로(473). */
+export function listedBase(
+  storedBase: AlignmentBase | null,
+  detail: SectionDetailResponse | null,
+  irregularStations: IrregularStation[] | null,
+): AlignmentBase | null {
+  if (!storedBase || !detail || !irregularStations) 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)));
+  const moved = followMovedNodes(
+    storedBase.basePvi,
+    gone,
+    born,
+    Object.keys(readAlignment(detail.longitudinal)?.edits.station_offsets ?? {}),
+  );
+  return {
+    ...storedBase,
+    basePvi: seatBornNodes(storedBase, moved.nodes, moved.seat, moved.held),
+    stations: list.map((station) => ({
+      station_id: station.station_id,
+      chainage_m: station.chainage_m,
+    })),
+  };
+}
+
+/** 저장 상세(종단도가 그리는 것) + 지금 입력이 심는 측점 = 저장 노선 종단 기준. 상세가 없으면 종단도 기준.
+ *  `ids` = 관에 관 id 붙임(페이지 = 세션 장부 · 서버 Node = 장부 사본 · 511-B). */
+export function plantedBase(
+  source: { base: AlignmentBase | null; detail?: SectionDetailResponse | null },
+  inputs: Pick<PipelineInputs, "pipes" | "structures">,
+  types: ReadonlyArray<PlanType>,
+  ids: (pipes: Array<{ chainage_m: number }>) => Array<{ chainage_m: number; id: string }>,
+): AlignmentBase | null {
+  const detail = source.detail ?? null;
+  const stored = detail && readAlignment(detail.longitudinal);
+  if (!detail || !stored) return source.base;
+  const pipes = ids((inputs.pipes ?? []) as Array<{ chainage_m: number }>);
+  const structures = (inputs.structures ?? []) as Parameters<typeof planStations>[1];
+  const planted = plannedIrregular(planStations(pipes, structures, types), 20); // 간격 = 이름 몫 · 기준 무관
+  return listedBase(toAlignmentBase(stored), detail, planted);
+}
diff --git a/B05_Profile/B05_Profile_Engine_Grade_Carry.py b/B05_Profile/B05_Profile_Engine_Grade_Carry.py
index 56c5d8784..9d0690dd5 100644
--- a/B05_Profile/B05_Profile_Engine_Grade_Carry.py
+++ b/B05_Profile/B05_Profile_Engine_Grade_Carry.py
@@ -10,7 +10,7 @@
     (측점 스냅이 뒤 교점을 밀어도 이어받음).
   - 자동 꼭짓점(`carry_base`) · 편집(`carry_edits`)은 **새 측점 위에** 다시 놓음 — 같은 자리면
     옛 선 그 자리 높이 · 아니면 새 지반 첫 계획선 · 편집은 옛 사용자 꼭짓점이 닿은 자리만 ·
-    R 은 가까운 측점.
+    R 은 가까운 측점. 편집 셈 = TS `carryEdits`(서버 Node · 511-B B-3) — 파이썬 짝 없음.
 
 짝 = TS `B05_Profile/logic/B05_Profile_Grade_Carry.ts`(같은 규칙) · 거울 시험 =
 `resources/tester/test_400_profile_carry.py` · `test_344_2_route_pairs.py`.
@@ -25,14 +25,10 @@ from typing import Any
 
 import numpy as np
 
-from B05_Profile.B05_Profile_Engine_Grade_Alignment import chainage_key, resolve_pvi
-
 # 같은 자리로 볼 옆 어긋남(m) — 브레인 정함 10-17 · 바꿀 수 있음 · TS `SAME_LINE_TOL_M` 짝.
 SAME_LINE_TOL_M = 1.0
 # 같은 자리로 볼 방향 차(cos 30°) — 엇갈려 지나는 선 · 머리핀 맞은편을 뺌.
 _SAME_DIRECTION_COS = 0.8660254037844386
-# 꼭짓점 위로 볼 거리(m) — `SAME_STATION_SNAP_M` 짝.
-_ON_NODE_M = 0.006
 # 같은 정점으로 볼 거리(m) — 저장 좌표 0.0001 m 자리 · 원호 다시 뽑기 잡음보다 크게.
 SAME_VERTEX_M = 1e-3
 _EPS = 1e-6
@@ -153,58 +149,18 @@ def carry_edits(
     edits: dict[str, Any] | None,
     stations: list[float],
     half_m: float,
-    tol_m: float = SAME_LINE_TOL_M,
 ) -> dict[str, dict[str, float]]:
     """새 편집 — 새 측점마다 같은 자리 · 옛 사용자 꼭짓점이 닿은 자리면 옛 계획선 − 옛 자동선.
 
     닿은 자리 = 꼭짓점 위(그 꼭짓점이 사용자) · 앞뒤 꼭짓점 하나가 사용자. 종단곡선 R = 옛 키에서
-    `half_m` 안 가장 가까운 같은 자리 측점. 새 자동 꼭짓점이 같은 자리에서 옛 자동선
-    높이(`carry_base`)라 계획고가 그대로.
+    `half_m` 안 가장 가까운 같은 자리 측점. 셈 = TS `carryEdits` 한 벌(서버 Node `profile.carry` ·
+    511-B B-3) — 노선 [저장]은 꼭짓점 세움과 한 부름(`carry_seat`).
     """
-    out: dict[str, dict[str, float]] = {"station_offsets": {}, "curve_radii": {}}
+    from B05_Profile.B05_Profile_Engine_Grade_Node import carry_seat
+
     if not old_base:
-        return out
-    match = line_matcher(old_xy, new_xy, tol_m)
-    mapped: list[tuple[float, float]] = []
-    for t in sorted({round(float(v), 3) for v in stations if math.isfinite(float(v))}):
-        s = match(t)
-        if s is not None:
-            mapped.append((t, s))
-    base_s = np.array([float(n["chainage_m"]) for n in old_base], dtype=np.float64)
-    base_z = np.array([float(n["elevation_m"]) for n in old_base], dtype=np.float64)
-    pvi_s, pvi_z, sources = resolve_pvi(base_s, base_z, (edits or {}).get("station_offsets") or {})
-
-    def touched(s: float) -> bool:
-        on = np.nonzero(np.abs(pvi_s - s) < _ON_NODE_M)[0]
-        if len(on):
-            return sources[int(on[0])] == "user"
-        ahead = np.nonzero(pvi_s > s)[0]
-        nxt = int(ahead[0]) if len(ahead) else -1
-        return nxt > 0 and (sources[nxt - 1] == "user" or sources[nxt] == "user")
-
-    for t, s in mapped:
-        if touched(s):
-            out["station_offsets"][chainage_key(t)] = round(
-                float(np.interp(s, pvi_s, pvi_z)) - float(np.interp(s, base_s, base_z)), 6
-            )
-    gaps: dict[str, float] = {}
-    for key, value in ((edits or {}).get("curve_radii") or {}).items():
-        try:
-            chainage = float(key)
-        except (TypeError, ValueError):
-            continue
-        if not math.isfinite(chainage) or value is None:
-            continue
-        slot, best = None, math.inf
-        for t, s in mapped:
-            gap = round(abs(s - chainage), 3)  # mm — 가운데 같은 거리면 앞 측점
-            if gap <= half_m and gap < best:
-                slot, best = chainage_key(t), gap
-        if slot is None or best >= gaps.get(slot, math.inf):
-            continue
-        gaps[slot] = best
-        out["curve_radii"][slot] = float(value)
-    return out
+        return {"station_offsets": {}, "curve_radii": {}}
+    return carry_seat(old_xy, new_xy, old_base, edits, stations, half_m)[0]
 
 
 def carry_policy(
diff --git a/B05_Profile/B05_Profile_Engine_Grade_Node.py b/B05_Profile/B05_Profile_Engine_Grade_Node.py
new file mode 100644
index 000000000..58d057803
--- /dev/null
+++ b/B05_Profile/B05_Profile_Engine_Grade_Node.py
@@ -0,0 +1,224 @@
+"""종단 계획선 셈 = 서버 Node(PLAN 511-B B-3) — 파이썬은 입력을 모으고 정본 꼴만 적음.
+
+셈 = TS 한 벌(`design_calc_node_profile.ts` → `B05_Profile/logic/` 의
+`B05_Profile_UI_Profile_Alignment.ts` `buildAlignment` · `B05_Profile_Grade_Ground.ts`
+`groundFollowingNodes` · `B05_Profile_Grade_Carry.ts` `carryEdits` · `B05_Profile_Pipeline_Grade.ts`
+`seatRouteMoved`) · 늘 떠 있는 Node(`run_calc_served`).
+Node 출력은 반올림 전 값 — 정본 꼴(0.000001 m · 칸 차례 · 실수형)은 `alignment_record` 가 적음
+(옛 파이썬 `build_alignment` 출력과 같은 글). 파이썬 `build_alignment` 은 1순위 못 선 땅의
+2~4 순위 폴백(관 정착 · 직선 분할)만 씀. 시험 = `resources/tester/test_511_b3_profile_node.py`.
+"""
+
+from __future__ import annotations
+
+from typing import Any
+
+from B05_Profile.B05_Profile_Engine_Grade_Alignment import ALIGNMENT_SCHEMA_VERSION
+from common_util.common_util_calc_runner import run_calc_served
+
+
+def run_profile(ids: list[str], inputs: dict[str, Any]) -> dict[str, Any]:
+    """종단 id 를 한 요청으로 · Node 못 돌림 · 셈 실패는 RuntimeError(파이썬 짝 없음)."""
+    answer = run_calc_served(ids, inputs)
+    if not answer or "results" not in answer:
+        reason = (answer or {}).get("error") or "Node 응답 없음"
+        raise RuntimeError(f"종단 계산 Node 실패({', '.join(ids)}) — {reason}")
+    return answer["results"]
+
+
+def _r6(value: Any) -> float:
+    return round(float(value), 6)
+
+
+def alignment_record(
+    raw: dict[str, Any], policy: dict[str, Any], *, only_explicit_curves: bool = False
+) -> dict[str, Any]:
+    """Node `buildAlignment` 출력 → 저장 정본 꼴(옛 `build_alignment` 반환 · 칸 · 차례 · 반올림)."""
+    segments = [
+        {
+            "index": int(row["index"]),
+            "from_m": _r6(row["from_m"]),
+            "to_m": _r6(row["to_m"]),
+            "length_m": _r6(row["length_m"]),
+            "height_m": _r6(row["height_m"]),
+            "grade_percent": _r6(row["grade_percent"]),
+        }
+        for row in raw["segments"]
+    ]
+    pvi = []
+    for index, row in enumerate(raw["pvi"]):
+        pvi.append(
+            {
+                "chainage_m": _r6(row["chainage_m"]),
+                "elevation_m": _r6(row["elevation_m"]),
+                "source": row["source"],
+                "kind": row["kind"],
+                "grade_in_pct": _r6(segments[index - 1]["grade_percent"]) if index else None,
+                "grade_out_pct": (
+                    _r6(segments[index]["grade_percent"]) if index < len(segments) else None
+                ),
+                "curve_l_m": None if row["curve_l_m"] is None else _r6(row["curve_l_m"]),
+                "curve_r_m": None if row["curve_r_m"] is None else _r6(row["curve_r_m"]),
+            }
+        )
+    max_grade = float(policy["max_grade_pct"])
+    stations = []
+    for row in raw["stations"]:
+        difference = float(row["ground_elevation_m"]) - float(row["plan_elevation_m"])
+        stations.append(
+            {
+                "station_id": row["station_id"],
+                "chainage_m": _r6(row["chainage_m"]),
+                "distance_m": _r6(row["distance_m"]),
+                "ground_elevation_m": _r6(row["ground_elevation_m"]),
+                "plan_elevation_m": _r6(row["plan_elevation_m"]),
+                "cut_m": _r6(max(difference, 0.0)),
+                "fill_m": _r6(max(-difference, 0.0)),
+            }
+        )
+    balance = raw["balance"]
+    cut, fill = float(balance["cut_area_m2"]), float(balance["fill_area_m2"])
+    return {
+        "schema_version": ALIGNMENT_SCHEMA_VERSION,
+        "policy": policy,
+        "only_explicit_curves": bool(only_explicit_curves),
+        "base_pvi": [
+            {"chainage_m": _r6(node["chainage_m"]), "elevation_m": _r6(node["elevation_m"])}
+            for node in raw["base_pvi"]
+        ],
+        "edits": {
+            name: {str(key): float(value) for key, value in raw["edits"][name].items()}
+            for name in ("station_offsets", "curve_radii")
+        },
+        "pvi": pvi,
+        "segments": segments,
+        "curves": [
+            {
+                "pvi_index": int(curve["pvi_index"]),
+                **{
+                    name: _r6(curve[name])
+                    for name in (
+                        "chainage_m",
+                        "bvc_m",
+                        "evc_m",
+                        "bvc_elevation_m",
+                        "evc_elevation_m",
+                        "l_m",
+                        "r_m",
+                        "k",
+                        "delta_pct",
+                        "middle_ordinate_m",
+                    )
+                },
+                "omitted": bool(curve["omitted"]),
+                "skip_allowed": bool(curve["skip_allowed"]),
+                "omit_reason": curve["omit_reason"],
+            }
+            for curve in raw["curves"]
+        ],
+        "stations": stations,
+        "samples": [
+            {
+                "chainage_m": _r6(sample["chainage_m"]),
+                "elevation_m": _r6(sample["elevation_m"]),
+                "ground_elevation_m": _r6(sample["ground_elevation_m"]),
+                "difference_m": _r6(
+                    float(sample["elevation_m"]) - float(sample["ground_elevation_m"])
+                ),
+            }
+            for sample in raw["samples"]
+        ],
+        "balance": {
+            "cut_area_m2": _r6(cut),
+            "fill_area_m2": _r6(fill),
+            "net_area_m2": _r6(fill - cut),
+            "imbalance_percent": _r6(balance["imbalance_percent"]),
+            "tolerance_percent": policy["balance_tolerance_percent"],
+            "within_tolerance": bool(balance["within_tolerance"]),
+        },
+        "violations": [
+            {
+                "segment_index": row["index"],
+                "type": "grade_over",
+                "value": row["grade_percent"],
+                "limit": policy["max_grade_pct"],
+            }
+            for row in segments
+            if abs(row["grade_percent"]) > max_grade + 1e-6
+        ],
+        "warnings": list(raw["warnings"]),
+    }
+
+
+def node_alignment(
+    chainage: Any,
+    ground: Any,
+    stations: list[dict[str, Any]],
+    policy: dict[str, Any],
+    edits: dict[str, Any] | None,
+    *,
+    base_pvi: list[dict[str, Any]] | None = None,
+    ground_following: dict[str, Any] | None = None,
+) -> dict[str, Any] | None:
+    """계획선 정본 — 꼭짓점(`base_pvi`) 또는 첫 계획선(`ground_following`) 위에 편집을 얹음.
+
+    첫 계획선이 못 서는 땅이면 None(부르는 쪽 2~4 순위). 편집 None 값 · 글 값은 옛 파이썬처럼 거름.
+    """
+    edits = edits or {}
+    clean = {
+        name: {
+            str(key): float(value)
+            for key, value in (edits.get(name) or {}).items()
+            if value is not None
+        }
+        for name in ("station_offsets", "curve_radii")
+    }
+    profile: dict[str, Any] = {
+        "chainage": [float(value) for value in chainage],
+        "ground": [float(value) for value in ground],
+        "policy": policy,
+        "stations": [
+            {"station_id": row.get("station_id"), "chainage_m": float(row["chainage_m"])}
+            for row in stations
+        ],
+        "edits": clean,
+    }
+    if base_pvi is not None:
+        profile["base_pvi"] = [
+            {"chainage_m": float(node["chainage_m"]), "elevation_m": float(node["elevation_m"])}
+            for node in base_pvi
+        ]
+    if ground_following is not None:
+        profile["ground_following"] = ground_following
+    raw = run_profile(["profile.alignment"], {"profile": profile})["profile.alignment"]
+    return None if raw is None else alignment_record(raw, policy)
+
+
+def carry_seat(
+    old_xy: list[Any],
+    new_xy: list[Any],
+    old_base: list[dict[str, Any]],
+    edits: dict[str, Any] | None,
+    stations: list[float],
+    half_m: float,
+    seat: dict[str, Any] | None = None,
+) -> tuple[dict[str, dict[str, float]], list[dict[str, Any]] | None]:
+    """노선 바뀜 계획고 옮김 + 옮긴 시설 꼭짓점 세움 = Node 한 부름(`profile.carry`).
+
+    `seat` = { ground_s · ground_z · policy · base_pvi · born } · 없으면 꼭짓점 None.
+    """
+    carry = {
+        "old_xy": [[float(x), float(y)] for x, y in old_xy],
+        "new_xy": [[float(x), float(y)] for x, y in new_xy],
+        "old_base": old_base,
+        "edits": edits or {},
+        "stations": [float(value) for value in stations],
+        "half_m": float(half_m),
+        "seat": seat,
+    }
+    out = run_profile(["profile.carry"], {"carry_profile": carry})["profile.carry"]
+    moved = {
+        name: {str(key): float(value) for key, value in out["edits"][name].items()}
+        for name in ("station_offsets", "curve_radii")
+    }
+    return moved, out["base_pvi"]
diff --git a/B05_Profile/B05_Profile_Engine_Grade_Profile.py b/B05_Profile/B05_Profile_Engine_Grade_Profile.py
index 0c3ff91fe..ff6b4f6a6 100644
--- a/B05_Profile/B05_Profile_Engine_Grade_Profile.py
+++ b/B05_Profile/B05_Profile_Engine_Grade_Profile.py
@@ -48,6 +48,7 @@ from B05_Profile.B05_Profile_Engine_Grade_Alignment import (
     evaluate,
 )
 from B05_Profile.B05_Profile_Engine_Grade_CurveLaw import flat_bends, straighten_held
+from B05_Profile.B05_Profile_Engine_Grade_Node import node_alignment
 from B05_Profile.B05_Profile_Engine_Grade_Solver import (
     grade_limits,
     integration_weights,
@@ -275,18 +276,22 @@ def design_ground_following_profile(
     if note:
         warnings.append(note)
 
-    # 초기값 직선화(438) — 기본 L 기준 R > 500 m 꼭짓점 묶음은 앞뒤 꺾임을 잇는 직선 위
-    base_z = straight_pass_through(base_s, base_z, policy)
-
-    alignment = build_alignment(
-        base_s=base_s,
-        base_z=base_z,
-        chainage=chainage,
-        ground=ground,
-        stations=stations,
-        policy=policy,
-        edits=dict(edits or {}),
+    # 꼭짓점(초기값 직선화 438 · 원지반 지남) · 선형 = 서버 Node 한 부름(511-B B-3 · TS
+    # `groundFollowingNodes` → `buildAlignment`) · 못 서는 땅이면 ValueError → 2~4 순위 폴백
+    alignment = node_alignment(
+        chainage,
+        ground,
+        stations,
+        policy.as_dict(),
+        edits,
+        ground_following={
+            "stations": [float(value) for value in base_s],
+            "start_offset_m": float(options.start_elevation_offset_m),
+            "end_offset_m": float(options.end_elevation_offset_m),
+        },
     )
+    if alignment is None:
+        raise ValueError("첫 계획선 꼭짓점을 세울 수 없는 종단입니다.")
     warnings.extend(alignment["warnings"])
     balanced = bool(alignment["balance"]["within_tolerance"])
     return alignment, _profile_entry(
@@ -549,8 +554,6 @@ def rebuild_alignment_profile(
 
     chainage, ground = ground_profile(longitudinal)
     base = stored["base_pvi"]
-    base_s = np.array([float(item["chainage_m"]) for item in base], dtype=np.float64)
-    base_z = np.array([float(item["elevation_m"]) for item in base], dtype=np.float64)
     policy = AlignmentPolicy.from_dict(stored.get("policy") or {})
 
     previous = (longitudinal.get("design_profiles") or [{}])[0]
@@ -564,14 +567,14 @@ def rebuild_alignment_profile(
         min_curve_length_m=policy.min_curve_length_m
         or float(criteria.get("min_curve_length_m") or 0.0),
     )
-    alignment = build_alignment(
-        base_s=base_s,
-        base_z=base_z,
-        chainage=chainage,
-        ground=ground,
-        stations=list(longitudinal.get("stations") or []),
-        policy=policy,
-        edits=edits,
+    # 선형 = 서버 Node(511-B B-3 · TS `buildAlignment`) · 정본 꼴은 `alignment_record`
+    alignment = node_alignment(
+        chainage,
+        ground,
+        list(longitudinal.get("stations") or []),
+        policy.as_dict(),
+        edits,
+        base_pvi=base,
     )
     options = GradeDesignOptions(
         max_grade_pct=float(criteria.get("max_grade_pct") or policy.max_grade_pct),
diff --git a/B05_Profile/B05_Profile_Engine_InitialProfile.py b/B05_Profile/B05_Profile_Engine_InitialProfile.py
index 7ecc75a21..b9b035e71 100644
--- a/B05_Profile/B05_Profile_Engine_InitialProfile.py
+++ b/B05_Profile/B05_Profile_Engine_InitialProfile.py
@@ -40,6 +40,13 @@ SOURCE_GLOBS = (
     "common_util/common_util_structure_station.py",
     "common_util/common_util_drainage_pipes.py",
     "config/config_system_design.py",
+    # 측점 · 지반 = Node `stations.sections`(511-B B-2) — 묶음을 낳는 TS
+    "B05_Profile/logic/B05_Profile_Sections_*.ts",
+    "B05_Profile/logic/B05_Profile_UI_RouteEdit_Frame.ts",
+    "common_util/common_util_structure_station.ts",
+    "common_util/common_util_structure_catalog.ts",
+    "common_util/common_util_surface_sampler.ts",
+    "A00_Common/design/logic/design_calc_node_sections.ts",
 )
 # 직선 위 꼭짓점(438 직선화) 판정 — 앞뒤 기울기 차(비율)
 _STRAIGHT_EPS = 1e-5
@@ -126,12 +133,19 @@ def initial_longitudinal(
 ) -> dict[str, Any]:
     """[적용] 체인이 남길 종단(측점 · 계획선) — 측점 생성 · 균형 얹기와 같은 조각."""
     from B05_Profile.B05_Profile_Engine_Grade_Profile import rebuild_alignment_profile
-    from B05_Profile.B05_Profile_Engine_Sections import build_sections, resolve_extra_stations
+    from B05_Profile.B05_Profile_Engine_Sections import (
+        build_sections,
+        resolve_extra_stations,
+        station_facilities,
+    )
     from B05_Profile.B05_Profile_Router_RouteInitial import seat_base_pvi
 
     polyline = [[x, y, 0.0] for x, y in line]
     pipes, structures, plus = facilities
-    extras = resolve_extra_stations(project_root, pipes, polyline, structures=structures, plus=plus)
+    planted = station_facilities(project_root, pipes, polyline, structures=structures, plus=plus)
+    extras = resolve_extra_stations(
+        project_root, planted[0], structures=planted[1], plus=planted[2]
+    )
     result, _summary = build_sections(
         polyline,
         sampler,
@@ -144,6 +158,7 @@ def initial_longitudinal(
         design_curves=curves,
         station_snap=True,  # [적용] = 스냅 켬 · 측점 No.(`saveRecommendedRoute`)
         station_snap_step=None,
+        facilities=planted,
     )
     longitudinal = result["longitudinal"]
     if target is not None and longitudinal.get("profile_alignment"):
diff --git a/B05_Profile/B05_Profile_Engine_Sections.py b/B05_Profile/B05_Profile_Engine_Sections.py
index 4c91bf6dc..31884c6ba 100644
--- a/B05_Profile/B05_Profile_Engine_Sections.py
+++ b/B05_Profile/B05_Profile_Engine_Sections.py
@@ -34,6 +34,7 @@ from B05_Profile.B05_Profile_Engine_Sections_Names import (  # noqa: F401 — 
     prune_stale_cross_files,
     valid_cross_names,
 )
+from B05_Profile.B05_Profile_Engine_Sections_Node import node_sections
 from B05_Profile.B05_Profile_Structures_Repository import load_structures
 from B05_Profile.B05_Profile_Structures_Schema import (
     structure_type_map,
@@ -257,6 +258,24 @@ def resolve_extra_stations(
     `xy` = 지금 노선 — 노선 밖(시점 앞 · 종점 뒤 · `route_outside`) 관 · 구조물은 뺌(459).
     `structures` · `plus` = 파일 대신 따라간 사본(476 추천 초기 종단 · 파일 안 씀).
     """
+    return tuple(
+        (float(station["chainage_m"]), str(station["title"]))
+        for station in plan_stations(
+            *station_facilities(project_root, pipes, xy, structures=structures, plus=plus)
+        )
+    )
+
+
+def station_facilities(
+    project_root: Path,
+    pipes: list[PipePoint],
+    xy: Sequence[Sequence[float]] | None = None,
+    *,
+    structures: list[Any] | None = None,
+    plus: list[float] | None = None,
+) -> tuple[list[PipePoint], list[Any], list[float]]:
+    """측점을 심는 관 · 구조물 · 추가 측점(노선 밖 뺌) — 파이썬 `plan_stations` ·
+    Node 측점 생성이 같은 입력."""
     from B05_Profile.B05_Profile_Plus_Stations import plus_chainages
     from common_util.common_util_route_follow import route_outside
 
@@ -273,12 +292,7 @@ def resolve_extra_stations(
             for s in structures
             if not route_outside(getattr(s, "x", None), getattr(s, "y", None), xy)
         ]
-    return tuple(
-        (float(station["chainage_m"]), str(station["title"]))
-        for station in plan_stations(
-            pipes, structures, plus_chainages(project_root) if plus is None else plus
-        )
-    )
+    return pipes, structures, plus_chainages(project_root) if plus is None else list(plus)
 
 
 def _append_design_profiles(
@@ -408,21 +422,28 @@ def build_sections(
     design_curves: list[dict[str, Any]],
     station_snap: bool,
     station_snap_step: float | None,
+    facilities: tuple[list[Any], list[Any], list[float]] | None = None,
 ) -> tuple[dict[str, Any], dict[str, Any] | None]:
     """측점 틀 · 지반 · 1차 계획선(438) · 포장 제안 — 파일 안 씀 · (결과, 계획선 요약).
 
     종횡단 생성(`run_section_generation`)과 추천 후보 초기 종단(476 · `..._RouteInitial_Initial`)
-    이 같은 셈 한 벌."""
-    result = generate_sections(
-        polyline,
-        sampler,
-        replace(options or SectionGenerationOptions(), extra_stations=extras),
-        source_snapshot=source_snapshot,
-        crs=crs,
-        design_curves=design_curves,
-        station_snap=station_snap,
-        station_snap_step=station_snap_step,
-    )
+    이 같은 셈 한 벌. 측점 · 지반 = 화면과 같은 TS(Node `stations.sections` · 511-B B-2 ·
+    `facilities` = `station_facilities`) · DTM 아닌 지표면 · Node 못 돌림 =
+    파이썬 `generate_sections`."""
+    generation = replace(options or SectionGenerationOptions(), extra_stations=extras)
+    shared = {
+        "crs": crs,
+        "design_curves": design_curves,
+        "station_snap": station_snap,
+        "station_snap_step": station_snap_step,
+    }
+    result = (
+        node_sections(
+            polyline, sampler, facilities, generation, source_snapshot=source_snapshot, **shared
+        )
+        if facilities is not None
+        else None
+    ) or generate_sections(polyline, sampler, generation, source_snapshot=source_snapshot, **shared)
     grade_summary = _append_design_profiles(
         result["longitudinal"],
         grade_options,
@@ -475,10 +496,13 @@ def run_section_generation(
     # 값이라, 되먹이면 B04에서 지운 관이 파일 정본을 이기고 되살아난다.
     pipes = _load_pipe_points(project_root, polyline)
     try:
-        extras = resolve_extra_stations(project_root, pipes, polyline)
+        facilities = station_facilities(project_root, pipes, polyline)
+        extras = resolve_extra_stations(
+            project_root, facilities[0], structures=facilities[1], plus=facilities[2]
+        )
     except Exception:
         logger.exception("B05 구조물 측점 해석 실패 (규칙 격자만 생성)")
-        extras = ()
+        facilities, extras = ([], [], []), ()
     logger.info("B05 종횡단: 구조물 측점 %d건 파생(관 %d건)", len(extras), len(pipes))
 
     result, grade_summary = build_sections(
@@ -495,6 +519,7 @@ def run_section_generation(
         design_curves=_load_design_curves(project_root),
         station_snap=load_station_snap(project_root),
         station_snap_step=load_station_snap_step(project_root),
+        facilities=facilities,
     )
 
     stage_root = project_root / _STAGE_SUBDIR
diff --git a/B05_Profile/B05_Profile_Engine_Sections_Core.py b/B05_Profile/B05_Profile_Engine_Sections_Core.py
index 8cc6afa33..203ef2d40 100644
--- a/B05_Profile/B05_Profile_Engine_Sections_Core.py
+++ b/B05_Profile/B05_Profile_Engine_Sections_Core.py
@@ -16,6 +16,9 @@
 (`buildStations`). 거울 시험 `resources/tester/test_344_3_pipeline_stations_mirror.py`.
 ⚠ 파이썬·TS 짝 — `generate_sections` 상단측(`uphill_side`) ↔ `B05_Profile/logic/B05_Profile_Pipeline_Detail.ts`
 (`uphillSide`). 거울 시험 `resources/tester/test_346_2_pipeline_cross_page.py`.
+서버 측점 생성 길(`build_sections`)은 DTM 이면 같은 TS(Node `stations.sections` · 511-B B-2 ·
+`B05_Profile_Engine_Sections_Node.py`) — 이 짝을 쓰는 곳 = DTM 아닌 지표면 · Node 못 돌림 ·
+구조물 측점만 뜨기(`sample_structure_sections`) · B06 곡선 측점 판정 · 추천 엔진(`_plan_radii` 등).
 """
 
 import math
diff --git a/B05_Profile/B05_Profile_Engine_Sections_Node.py b/B05_Profile/B05_Profile_Engine_Sections_Node.py
new file mode 100644
index 000000000..9e86ddb11
--- /dev/null
+++ b/B05_Profile/B05_Profile_Engine_Sections_Node.py
@@ -0,0 +1,193 @@
+"""서버 측점 생성 = 화면과 같은 TS(PLAN 511-B B-2 · 요구 320-4) — 늘 떠 있는 Node
+`stations.sections`.
+
+`build_sections`(B03 체인 · 노선 저장 · 재생성 · 넓힘 · 추천 초기 종단)가 부름 — 측점 자리 ·
+종류 · 열쇠 · 반경 · 확폭 · 지반 · 틀 · 상단측 =
+`B05_Profile/logic/B05_Profile_Sections_Generate.ts`
+(화면 묶음 stations · ground 단계와 같은 함수). 파이썬은 머리(schema_version · source ·
+coordinate_reference · cad_exchange · options)만 붙임.
+
+DTM 지표면만(격자 이진 = `dtm_grid_file`) — DTM 아닌 지표면(tin · nurbs · implicit · meshfree) ·
+Node 못 돌림 = None → 부르는 쪽이 파이썬 `generate_sections`(짝 · 로그 남김).
+측점 열쇠(`key`) = 노선 저장 이월 열쇠(`B05_Profile_Route_Save._carry_cross`).
+"""
+
+from __future__ import annotations
+
+import logging
+from typing import Any
+
+from B05_Profile.B05_Profile_Engine_Sections_Core import (
+    SECTION_SCHEMA_VERSION,
+    SectionGenerationOptions,
+)
+
+logger = logging.getLogger(__name__)
+
+
+def plan_pipe(pipe: Any) -> dict[str, Any]:
+    """관 정본 → TS `PlanPipe`(누가거리 그대로 · 파이썬 `plan_stations` 가 읽는 칸)."""
+    return {
+        "id": getattr(pipe, "id", None),
+        "chainage_m": float(pipe.chainage_m),
+        "facility": getattr(pipe, "facility", None) or "pipe",
+        "start_m": getattr(pipe, "start_m", None),
+        "end_m": getattr(pipe, "end_m", None),
+        "options": getattr(pipe, "options", None) or {},
+    }
+
+
+def plan_structure(item: Any) -> dict[str, Any]:
+    """구조물 정본 → TS `PlanStructure`(JSON 꼴)."""
+    if hasattr(item, "model_dump"):
+        return item.model_dump(mode="json")
+    return dict(item) if isinstance(item, dict) else dict(vars(item))
+
+
+def structure_table() -> tuple[list[dict[str, Any]], dict[str, Any]]:
+    """구조물 종류(`/projects/structure-types` 꼴) · 정의(화면 `useCatalogDefinition` 꼴)."""
+    from B05_Profile.B05_Profile_Structures_Schema import _read_definition, _stamp
+    from M02_MasterTemplete.StructOptions.M02_SO_Options import with_visible
+
+    types = [item.model_dump(mode="json") for item in with_visible().types]
+    return types, {"types": types, **_read_definition(*_stamp())}
+
+
+def stations_input(
+    xy: list[list[float]],
+    pipes: list[Any],
+    structures: list[Any],
+    plus: list[float],
+    options: SectionGenerationOptions,
+    design_curves: list[dict[str, Any]],
+    station_snap: bool,
+    station_snap_step: float | None,
+) -> dict[str, Any]:
+    """Node `stations.list` · `stations.sections` 입력(격자 빼고)."""
+    types, definition = structure_table()
+    return {
+        "line": xy,
+        "curves": design_curves,
+        "pipes": [plan_pipe(pipe) for pipe in pipes],
+        "structures": [plan_structure(item) for item in structures],
+        "types": types,
+        "definition": definition,
+        "plus": [float(at) for at in plus],
+        "interval_m": options.station_interval_m,
+        "include_endpoint": options.include_endpoint,
+        "station_snap": station_snap,
+        "station_snap_step": station_snap_step,
+        "cross_half_width_m": options.cross_half_width_m,
+        "cross_sample_interval_m": options.cross_sample_interval_m,
+        "long_sample_interval_m": options.long_sample_interval_m,
+    }
+
+
+def node_stations(stations: dict[str, Any]) -> list[dict[str, Any]] | None:
+    """측점 목록(`buildStations` · 열쇠 · 누가거리 · 종류) — 못 돌림 None."""
+    from common_util.common_util_calc_runner import run_calc_served
+
+    answer = run_calc_served(["stations.list"], {"stations": stations})
+    if not answer or "error" in answer:
+        logger.warning("Node 측점 목록 실패: %s", (answer or {}).get("error"))
+        return None
+    return answer["results"]["stations.list"]
+
+
+def node_plan_stations(
+    groups: list[tuple[list[Any], list[Any], list[float]]],
+) -> list[list[dict[str, Any]]] | None:
+    """(관 · 구조물 · 추가 측점) 묶음마다 측점 계획(`planStations` · 파이썬 `plan_stations` 짝) —
+    한 Node 부름 · 못 돌림 None(부르는 쪽이 파이썬 짝)."""
+    from common_util.common_util_calc_runner import run_calc
+
+    if not groups:
+        return []
+    types, definition = structure_table()
+    plan = [
+        {
+            "pipes": [plan_pipe(pipe) for pipe in pipes],
+            "structures": [plan_structure(item) for item in structures],
+            "plus": [float(at) for at in plus],
+        }
+        for pipes, structures, plus in groups
+    ]
+    try:
+        results = run_calc(
+            ["stations.plan"],
+            {"stations": {"types": types, "definition": definition, "plan": plan}},
+        )
+    except Exception:  # noqa: BLE001 — 파이썬 짝으로 이어 감
+        logger.exception("Node 측점 계획 실패 — 파이썬 길")
+        return None
+    if results is None:
+        logger.warning("Node 측점 계획 못 돌림 — 파이썬 길")
+        return None
+    return results["stations.plan"]
+
+
+def node_sections(
+    polyline: list[list[float]],
+    sampler: Any,
+    facilities: tuple[list[Any], list[Any], list[float]],
+    options: SectionGenerationOptions,
+    *,
+    source_snapshot: dict[str, Any],
+    crs: str | None,
+    design_curves: list[dict[str, Any]],
+    station_snap: bool,
+    station_snap_step: float | None,
+) -> dict[str, Any] | None:
+    """`generate_sections` 와 같은 꼴(+ 측점 `key`) — DTM 아님 · Node 못 돌림 = None."""
+    from common_util.common_util_calc_runner import run_calc_served
+    from common_util.common_util_surface_sampler import dtm_grid_file
+
+    source = getattr(sampler, "source", None)
+    if not source:
+        return None
+    options.validate()
+    pipes, structures, plus = facilities
+    stations = stations_input(
+        [[float(p[0]), float(p[1])] for p in polyline],
+        pipes,
+        structures,
+        plus,
+        options,
+        design_curves,
+        station_snap,
+        station_snap_step,
+    )
+    stations["grid"] = str(dtm_grid_file(source))
+    answer = run_calc_served(["stations.sections"], {"stations": stations})
+    if not answer or "error" in answer:
+        logger.warning("Node 측점 생성 실패 — 파이썬 길: %s", (answer or {}).get("error"))
+        return None
+    out = answer["results"]["stations.sections"]
+    return {
+        "schema_version": SECTION_SCHEMA_VERSION,
+        "status": "completed",
+        "source": source_snapshot or {},
+        "coordinate_reference": {
+            "crs": crs,
+            "world_axes": {"x": "project_easting", "y": "project_northing", "z": "elevation"},
+            "units": {"horizontal": "m", "vertical": "m", "angle": "degree"},
+        },
+        "cad_exchange": {
+            "station_origin": "BP",
+            "chainage_direction": "BP_to_EP",
+            "cross_offset_sign": {"negative": "right", "positive": "left"},
+            "cross_local_axes": {"x": "offset_m", "y": "elevation_m"},
+            "recommended_drawing_datum_m": out["datum"],
+        },
+        "options": {
+            "station_interval_m": options.station_interval_m,
+            "cross_half_width_m": options.cross_half_width_m,
+            "cross_sample_interval_m": options.cross_sample_interval_m,
+            "long_sample_interval_m": options.long_sample_interval_m,
+            "include_endpoint": options.include_endpoint,
+            "extra_stations": [list(entry) for entry in options.extra_stations],
+        },
+        "longitudinal": out["longitudinal"],
+        "cross_sections": out["cross_sections"],
+        "summary": out["summary"],
+    }
diff --git a/B05_Profile/B05_Profile_Route_Polyline_Write.py b/B05_Profile/B05_Profile_Route_Polyline_Write.py
new file mode 100644
index 000000000..bf4cfbab1
--- /dev/null
+++ b/B05_Profile/B05_Profile_Route_Polyline_Write.py
@@ -0,0 +1,184 @@
+"""계획노선 폴리라인 파일 쓰기(`B05_Profile_Router_Replan` 에서 나눔 · PLAN 511-B B-5).
+
+노드 · 곡선 켬끔 · R(편집 갈래) → 선 · 노드 · 곡선표(+ 편집표) = 늘 떠 있는 Node `route.polyline`
+(화면 `buildEditedPolyline` · `nodeEdits` 와 같은 TS) · 파이썬은 파일 꼴(csv 4자리 · 곡선 as_dict
+반올림)만. 단순화 갈래(예상노선 첫 폴리라인) · Node 못 돌림 = 파이썬 `build_planned_polyline` ·
+`node_edits`(짝 · 로그 남김).
+"""
+
+from __future__ import annotations
+
+import json
+import logging
+from pathlib import Path
+from typing import Any
+
+from B05_Profile.B05_Profile_Route_NodeEdits import node_edits
+from common_util.common_util_route_geometry import write_route_csv
+from common_util.common_util_route_polyline import (
+    PlannedPolyline,
+    RouteCurve,
+    RouteNode,
+    build_planned_polyline,
+)
+
+logger = logging.getLogger(__name__)
+
+
+def _nodes_path(path: Path) -> Path:
+    """그 폴리라인을 낳은 **노드** 파일 자리 — `planned_route.csv` → `planned_route_nodes.csv`."""
+    return path.with_name(f"{path.stem}_nodes.csv")
+
+
+def _curves_path(path: Path) -> Path:
+    """그 폴리라인의 **곡선 성분** 자리 — `planned_route.csv` → `planned_route_curves.json`.
+
+    왜 따로 남기나(2026-09-07 사용자 확정) — 계획노선은 「직선 > 곡선 > 직선」이고 사용자가
+    잡는 것은 **곡선 시작·끝점**이며 반지름도 직접 바꾼다. 정점 목록만으로는 어디부터
+    어디까지가 한 곡선인지, 그 반지름이 얼마인지 알 수 없어 편집·도면이 같은 값을 못 본다.
+    """
+    return path.with_name(f"{path.stem}_curves.json")
+
+
+def _read_curves(path: Path, key: str = "curves") -> list[dict]:
+    """저장해 둔 곡선 성분(`key` = "edits" 면 넣은 편집값 · 430). 없거나 못 읽으면 빈 목록."""
+    target = _curves_path(path)
+    if not target.is_file():
+        return []
+    try:
+        data = json.loads(target.read_text(encoding="utf-8"))
+    except (OSError, json.JSONDecodeError):
+        logger.warning("계획노선 곡선 성분을 읽지 못했습니다: %s", target)
+        return []
+    curves = data.get(key) if isinstance(data, dict) else None
+    return curves if isinstance(curves, list) else []
+
+
+def node_polyline(
+    points: list[tuple[float, float]],
+    radius_m: float,
+    curve_flags: list[bool] | None,
+    radii: list[float | None] | None,
+    locks: list[str | None] | None,
+    arcs: list[float | None] | None,
+) -> tuple[PlannedPolyline, list[dict[str, Any]]] | None:
+    """편집 갈래 폴리라인 + 편집표 = Node `route.polyline` — 못 돌림 None."""
+    from common_util.common_util_calc_runner import run_calc
+
+    route = {
+        "points": [[float(x), float(y)] for x, y in points],
+        "curve_flags": curve_flags,
+        "radii": radii,
+        "locks": locks,
+        "arcs": arcs,
+        "min_radius_m": float(radius_m),
+    }
+    try:
+        out = (run_calc(["route.polyline"], {"route_polyline": route}) or {}).get("route.polyline")
+    except Exception:  # noqa: BLE001 — 노선 저장은 파이썬 짝으로 이어 감
+        logger.exception("Node 노선 폴리라인 실패 — 파이썬 길")
+        return None
+    if not out:
+        logger.warning("Node 노선 폴리라인 못 돌림 — 파이썬 길")
+        return None
+    # JSON 정수(100) → float — 파이썬 길과 같은 글(`100.0`)로 적힘
+    nodes = [
+        RouteNode(
+            x=float(x),
+            y=float(y),
+            inner_angle_deg=_num(info["inner_angle_deg"]),
+            radius_m=_num(info["radius_m"]),
+            tangent_m=_num(info["tangent_m"]),
+            violations=list(info["violations"]),
+        )
+        for (x, y), info in zip(out["cleaned"], out["nodes"])
+    ]
+    curves = [
+        RouteCurve(
+            apex=_xy(curve["apex"]),
+            radius_m=float(curve["radius_m"]),
+            tangent_m=float(curve["tangent_m"]),
+            inner_angle_deg=float(curve["inner_angle_deg"]),
+            start=_xy(curve["start"]),
+            end=_xy(curve["end"]),
+            node_first=int(curve["node_first"]),
+            node_last=int(curve["node_last"]),
+            violations=list(curve["violations"]),
+        )
+        for curve in out["curves"]
+    ]
+    vertices = [_xy(vertex) for vertex in out["vertices"]]
+    edits = [
+        {**edit, "radius_m": _num(edit["radius_m"]), "arc_m": _num(edit["arc_m"])}
+        for edit in out["edits"]
+    ]
+    return PlannedPolyline(nodes=nodes, vertices=vertices, curves=curves), edits
+
+
+def _num(value: Any) -> float | None:
+    return None if value is None else float(value)
+
+
+def _xy(pair: list[float]) -> tuple[float, float]:
+    return float(pair[0]), float(pair[1])
+
+
+def _write_planned_polyline(
+    path: Path,
+    points: list[tuple[float, float]],
+    radius_m: float,
+    *,
+    simplify: bool = True,
+    curve_flags: list[bool] | None = None,
+    radii: list[float | None] | None = None,
+    station_snap: bool | None = None,
+    station_snap_step: float | None = None,
+    locks: list[str | None] | None = None,
+    arcs: list[float | None] | None = None,
+) -> dict:
+    """점 묶음을 폴리라인으로 바꿔 CSV 로 쓴다. 노드 요약을 돌려준다.
+
+    `station_snap` — [확인] 때만 곡선표에 적음(요구 224-2). None 이면 칸을 안 둠(끔) ·
+    `station_snap_step` — 켬 + 간격이 있을 때만 곡선표에 적음(390-5 · 없으면 측점 No.).
+    `locks` · `arcs` — 편집값이 오면 넣은 값을 곡선표 `edits` 에(430 · `_Route_NodeEdits`).
+
+    **노드도 함께 남긴다** — 노드는 폴리라인에서 되뽑을 수 없다. 폴리라인에는 원호 위 점이
+    섞여 있어 다시 단순화하면 꺾임점이 조금씩 지워지고, 그것을 반복하면 [확인]을 누를
+    때마다 선이 깎인다(2026-09-07 실측: 정점 136 → 134 → 119). 낳은 값을 그대로 보관한다.
+    """
+    edited = curve_flags is not None or radii is not None
+    made = (
+        node_polyline(points, radius_m, curve_flags, radii, locks, arcs)
+        if edited and not simplify
+        else None
+    )
+    if made is not None:
+        result, edits = made
+    else:
+        result = build_planned_polyline(
+            points,
+            min_radius_m=radius_m,
+            simplify=simplify,
+            curve_flags=curve_flags,
+            radii=radii,
+        )
+        edits = node_edits(points, curve_flags, radii, locks, arcs) if edited else None
+    write_route_csv(path, [{"x": x, "y": y} for x, y in result.vertices])
+    write_route_csv(_nodes_path(path), [{"x": node.x, "y": node.y} for node in result.nodes])
+    table: dict[str, Any] = {
+        "min_radius_m": round(radius_m, 3),
+        "curves": [c.as_dict() for c in result.curves],
+    }
+    if station_snap is not None:
+        table["station_snap"] = bool(station_snap)
+    if station_snap and station_snap_step is not None:
+        table["station_snap_step"] = float(station_snap_step)
+    if edits is not None:
+        table["edits"] = edits
+    _curves_path(path).write_text(json.dumps(table, ensure_ascii=False), encoding="utf-8")
+    return {
+        "nodes": len(result.nodes),
+        "curves": result.curve_count,
+        "violations": result.violation_count,
+        "vertices": len(result.vertices),
+    }
diff --git a/B05_Profile/B05_Profile_Route_Save.py b/B05_Profile/B05_Profile_Route_Save.py
index 388f627ff..9b1ca473c 100644
--- a/B05_Profile/B05_Profile_Route_Save.py
+++ b/B05_Profile/B05_Profile_Route_Save.py
@@ -51,8 +51,8 @@ from B05_Profile.B05_Profile_Route_Save_Parts import (
     add_crossing_pipes,
     carry_cross_inputs,
     follow_pipes,
+    keyed_stations,
     route_moved_stations,
-    seat_route_moved,
     station_keys,
     station_seats,
     vertices_of,
@@ -255,12 +255,9 @@ async def _carry_profile(
     new_xy: list[list[float]],
 ) -> None:
     """같은 자리(옆 1 m 안) 옛 계획고 · R 을 새 측점 위에 · 바뀐 자리만 새 지반 첫 계획선(400)."""
-    from B05_Profile.B05_Profile_Engine_Grade_Carry import (
-        carry_base,
-        carry_edits,
-        carry_policy,
-        changed_span,
-    )
+    from B05_Profile.B05_Profile_Engine_Grade_Alignment import AlignmentPolicy
+    from B05_Profile.B05_Profile_Engine_Grade_Carry import carry_base, carry_policy, changed_span
+    from B05_Profile.B05_Profile_Engine_Grade_Node import carry_seat
     from B05_Profile.B05_Profile_Repository import update_longitudinal_grade_summary
     from B05_Profile.B05_Profile_Router import _apply_alignment_edits
     from common_util.common_util_json import atomic_write_json
@@ -278,13 +275,22 @@ async def _carry_profile(
         stations = [float(row["chainage_m"]) for row in longitudinal.get("stations") or []]
         half = float((alignment.get("policy") or {}).get("station_interval_m") or 20.0) / 2
         base = carry_base(old_xy, new_xy, old_base, alignment["base_pvi"])
-        edits = carry_edits(old_xy, new_xy, old_base, old_alignment.get("edits"), stations, half)
     alignment["policy"] = carry_policy(old_xy, new_xy, old_alignment, alignment)  # 옛 L · 열쇠(432)
     alignment["base_pvi"] = base
-    if span is not None:  # 옮긴 시설 측점에 427 꼭짓점 다시 세움(459 · 초안 planline 짝)
-        born = route_moved_stations(longitudinal.get("stations") or [], old_xy, new_xy)
-        held = [float(key) for key in (edits.get("station_offsets") or {})]
-        alignment["base_pvi"] = seat_route_moved(alignment, born, held)
+    if (
+        span is not None
+    ):  # 편집 옮김 + 옮긴 시설 측점 427 꼭짓점 다시 세움 = Node 한 부름(459 · 511-B)
+        samples = alignment.get("samples") or []
+        seat = {
+            "ground_s": [float(row["chainage_m"]) for row in samples],
+            "ground_z": [float(row["ground_elevation_m"]) for row in samples],
+            "policy": AlignmentPolicy.from_dict(alignment["policy"] or {}).as_dict(),
+            "base_pvi": base,
+            "born": route_moved_stations(longitudinal.get("stations") or [], old_xy, new_xy),
+        }
+        edits, alignment["base_pvi"] = await asyncio.to_thread(
+            carry_seat, old_xy, new_xy, old_base, old_alignment.get("edits"), stations, half, seat
+        )
     await asyncio.to_thread(atomic_write_json, path, longitudinal)
     _alignment, summary, _dropped = await asyncio.to_thread(
         _apply_alignment_edits, project_root, relative, edits
@@ -331,8 +337,11 @@ 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 [], old_pipes, old_structures, interval_m)
-    new_keys = station_keys(
+    # 열쇠 = Node 측점 출력(`key` · 511-B B-2) · 없으면(옛 파일 · DTM 아닌 지표면) 파이썬 열쇠
+    old_keys = keyed_stations(old_long.get("stations") or []) or station_keys(
+        old_long.get("stations") or [], old_pipes, old_structures, interval_m
+    )
+    new_keys = keyed_stations(new_long.get("stations") or []) or station_keys(
         new_long.get("stations") or [], [pipe for _, pipe in pairs], new_structures, interval_m
     )
     designs = {
diff --git a/B05_Profile/B05_Profile_Route_Save_Parts.py b/B05_Profile/B05_Profile_Route_Save_Parts.py
index eee34ca91..14ab36cc9 100644
--- a/B05_Profile/B05_Profile_Route_Save_Parts.py
+++ b/B05_Profile/B05_Profile_Route_Save_Parts.py
@@ -10,7 +10,8 @@ DB · 파일 없이 값만 받아 값을 돌려준다(시험이 그대로 부름
     같은 세류선 라벨 관(옮겼어도) · 지움 표지가 짝으로 잡은 교차점엔 안 더함(507-2 ·
     `common_util_stream_crossing`).
   - 관 최대 간격 보충 없음(369) — 간격 보충은 배수유역 [자동 제안]만.
-  - 측점 열쇠 = `common_util_station_key.station_key` 한 벌(sub2 짝) — 일반 `grid:k` ·
+  - 측점 열쇠 = Node 측점 생성이 측점에 적은 `key`(511-B B-2 · `keyed_stations`) · 없으면(옛 파일 ·
+    DTM 아닌 지표면) `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 + `ROUTE_CARRY_KEYS`(사면 쉬프트 ·
@@ -119,15 +120,21 @@ def _facility_owners(
 ) -> dict[float, tuple[str, str | None, str]]:
     """측점 자리(0.01 m) → (관 · 구조물, id, 역할 anchor · start · end). 같은 자리면 관이 먼저
     (`plan_stations` 이름 규칙)."""
+    from B05_Profile.B05_Profile_Engine_Sections_Node import node_plan_stations
+
+    # 측점 계획 = Node(`stations.plan` · 511-B B-5) · 못 돌림 = 파이썬 `plan_stations`
+    groups = [([pipe], [], []) for pipe in pipes] + [([], [item], []) for item in structures]
+    planned = node_plan_stations(groups) or [plan_stations(*group) for group in groups]
+    marks_of = iter(planned)
     owners: dict[float, tuple[str, str | None, str]] = {}
     for pipe in pipes:
-        for mark in plan_stations([pipe], []):
+        for mark in next(marks_of):
             owners.setdefault(
                 round(float(mark["chainage_m"]), 2),
                 ("pipe", getattr(pipe, "id", None), str(mark.get("role") or "anchor")),
             )
     for item in structures:
-        for mark in plan_stations([], [item]):
+        for mark in next(marks_of):
             owners.setdefault(
                 round(float(mark["chainage_m"]), 2),
                 (
@@ -176,6 +183,18 @@ def station_keys(
     return out
 
 
+def keyed_stations(stations: Sequence[dict[str, Any]]) -> dict[str, float] | None:
+    """측점이 지닌 열쇠(`key` · Node 측점 생성 출력 · 511-B B-2) → 누가거리 · 열쇠 없는 측점이 있으면
+    None(옛 파일 · DTM 아닌 지표면 = `station_keys` 로 셈)."""
+    rows = [row for row in stations if row.get("chainage_m") is not None]
+    if not rows or not all(isinstance(row.get("key"), str) for row in rows):
+        return None
+    out: dict[str, float] = {}
+    for row in rows:
+        out.setdefault(row["key"], float(row["chainage_m"]))
+    return out
+
+
 def station_seats(
     stations: Sequence[dict[str, Any]], keys: dict[str, float]
 ) -> dict[str, tuple[float, float, tuple[float, float] | None] | None]:
diff --git a/B05_Profile/B05_Profile_Router_Replan.py b/B05_Profile/B05_Profile_Router_Replan.py
index b1104b39e..e772dbac6 100644
--- a/B05_Profile/B05_Profile_Router_Replan.py
+++ b/B05_Profile/B05_Profile_Router_Replan.py
@@ -24,7 +24,6 @@
 
 import asyncio
 import functools
-import json
 import logging
 import time
 from pathlib import Path
@@ -38,7 +37,12 @@ from B03_FileInput.B03_FileInput_Repository import get_project_storage_relative_
 from B05_Profile.B05_Profile_Engine_RouteInitial import read_initial_choice, write_initial_choice
 from B05_Profile.B05_Profile_Engine_RouteInitial_Station import snapped_initial
 from B05_Profile.B05_Profile_Engine_Sections import load_station_snap, load_station_snap_step
-from B05_Profile.B05_Profile_Route_NodeEdits import node_edits
+from B05_Profile.B05_Profile_Route_Polyline_Write import (  # noqa: F401 — 부르는 곳이 `replan.` 으로 씀
+    _curves_path,
+    _nodes_path,
+    _read_curves,
+    _write_planned_polyline,
+)
 from B05_Profile.B05_Profile_Route_Save import RouteSaveRequest
 from B05_Profile.B05_Profile_Schema import (  # noqa: F401 — 부르는 곳이 `replan.` 으로 씀
     RouteInitialCriteria,
@@ -191,86 +195,6 @@ async def _road_settings(project_id: UUID) -> tuple[str, int | None, str]:
     return grade_class, design_speed, terrain
 
 
-def _nodes_path(path: Path) -> Path:
-    """그 폴리라인을 낳은 **노드** 파일 자리 — `planned_route.csv` → `planned_route_nodes.csv`."""
-    return path.with_name(f"{path.stem}_nodes.csv")
-
-
-def _curves_path(path: Path) -> Path:
-    """그 폴리라인의 **곡선 성분** 자리 — `planned_route.csv` → `planned_route_curves.json`.
-
-    왜 따로 남기나(2026-09-07 사용자 확정) — 계획노선은 「직선 > 곡선 > 직선」이고 사용자가
-    잡는 것은 **곡선 시작·끝점**이며 반지름도 직접 바꾼다. 정점 목록만으로는 어디부터
-    어디까지가 한 곡선인지, 그 반지름이 얼마인지 알 수 없어 편집·도면이 같은 값을 못 본다.
-    """
-    return path.with_name(f"{path.stem}_curves.json")
-
-
-def _read_curves(path: Path, key: str = "curves") -> list[dict]:
-    """저장해 둔 곡선 성분(`key` = "edits" 면 넣은 편집값 · 430). 없거나 못 읽으면 빈 목록."""
-    target = _curves_path(path)
-    if not target.is_file():
-        return []
-    try:
-        data = json.loads(target.read_text(encoding="utf-8"))
-    except (OSError, json.JSONDecodeError):
-        logger.warning("계획노선 곡선 성분을 읽지 못했습니다: %s", target)
-        return []
-    curves = data.get(key) if isinstance(data, dict) else None
-    return curves if isinstance(curves, list) else []
-
-
-def _write_planned_polyline(
-    path: Path,
-    points: list[tuple[float, float]],
-    radius_m: float,
-    *,
-    simplify: bool = True,
-    curve_flags: list[bool] | None = None,
-    radii: list[float | None] | None = None,
-    station_snap: bool | None = None,
-    station_snap_step: float | None = None,
-    locks: list[str | None] | None = None,
-    arcs: list[float | None] | None = None,
-) -> dict:
-    """점 묶음을 폴리라인으로 바꿔 CSV 로 쓴다. 노드 요약을 돌려준다.
-
-    `station_snap` — [확인] 때만 곡선표에 적음(요구 224-2). None 이면 칸을 안 둠(끔) ·
-    `station_snap_step` — 켬 + 간격이 있을 때만 곡선표에 적음(390-5 · 없으면 측점 No.).
-    `locks` · `arcs` — 편집값이 오면 넣은 값을 곡선표 `edits` 에(430 · `_Route_NodeEdits`).
-
-    **노드도 함께 남긴다** — 노드는 폴리라인에서 되뽑을 수 없다. 폴리라인에는 원호 위 점이
-    섞여 있어 다시 단순화하면 꺾임점이 조금씩 지워지고, 그것을 반복하면 [확인]을 누를
-    때마다 선이 깎인다(2026-09-07 실측: 정점 136 → 134 → 119). 낳은 값을 그대로 보관한다.
-    """
-    result = build_planned_polyline(
-        points,
-        min_radius_m=radius_m,
-        simplify=simplify,
-        curve_flags=curve_flags,
-        radii=radii,
-    )
-    write_route_csv(path, [{"x": x, "y": y} for x, y in result.vertices])
-    write_route_csv(_nodes_path(path), [{"x": node.x, "y": node.y} for node in result.nodes])
-    table: dict[str, Any] = {
-        "min_radius_m": round(radius_m, 3),
-        "curves": [c.as_dict() for c in result.curves],
-    }
-    if station_snap is not None:
-        table["station_snap"] = bool(station_snap)
-    if station_snap and station_snap_step is not None:
-        table["station_snap_step"] = float(station_snap_step)
-    if curve_flags is not None or radii is not None:
-        table["edits"] = node_edits(points, curve_flags, radii, locks, arcs)
-    _curves_path(path).write_text(json.dumps(table, ensure_ascii=False), encoding="utf-8")
-    return {
-        "nodes": len(result.nodes),
-        "curves": result.curve_count,
-        "violations": result.violation_count,
-        "vertices": len(result.vertices),
-    }
-
-
 def _ensure_planned_initial(project_root: Path, radius_m: float) -> dict | None:
     """계획노선 **초기 폴리라인**이 없거나 낡았으면 예상노선을 폴리라인화해 세운다.
 
diff --git a/B05_Profile/B05_Profile_Router_Terrain.py b/B05_Profile/B05_Profile_Router_Terrain.py
index 27faaa26c..ee918e151 100644
--- a/B05_Profile/B05_Profile_Router_Terrain.py
+++ b/B05_Profile/B05_Profile_Router_Terrain.py
@@ -199,6 +199,32 @@ def _design_grid(
     }
 
 
+async def dtm_grid_npz(connection, project_id: UUID, model_id: int, smooth: bool) -> Path:
+    """그 프로젝트 DTM 모델의 npz(평활 고르기 = 서버 표본기와 같음) — 없으면 LookupError(까닭).
+
+    경로 = 프로젝트 storage 안 DB 상대 경로만(밖으로 나가면 LookupError · 계산 창구 `/calc` 도 씀).
+    """
+    stored = await get_project_storage_relative_path(connection, project_id)
+    async with connection.cursor() as cursor:
+        await cursor.execute(
+            "SELECT model_type, model_file_path FROM surface_models"
+            " WHERE id = %s AND project_id = %s",
+            (model_id, str(project_id)),
+        )
+        row = await cursor.fetchone()
+    if not stored or not row or row[0] != "dtm" or not row[1]:
+        raise LookupError("DTM 격자가 없는 지표면 모델입니다.")
+    root = Path(resolve_stored_project_path(stored))
+    model_path = (root / str(row[1])).resolve()
+    if not model_path.is_relative_to(root.resolve()):
+        raise LookupError("DTM 격자가 없는 지표면 모델입니다.")
+    smooth_path = model_path.with_name(f"{model_path.stem}_smooth.npz")
+    npz_path = smooth_path if smooth and smooth_path.is_file() else model_path
+    if not npz_path.is_file():
+        raise LookupError("DTM 격자 파일이 없습니다.")
+    return npz_path
+
+
 @router.get("/{project_id}/surface/models/{model_id}/grid", response_model=None)
 async def read_surface_grid(
     request: Request, project_id: UUID, model_id: int, smooth: bool = False
@@ -209,26 +235,9 @@ async def read_surface_grid(
     """
     pool = get_db_pool()
     async with pool.acquire() as connection:
-        stored = await get_project_storage_relative_path(connection, project_id)
-        async with connection.cursor() as cursor:
-            await cursor.execute(
-                "SELECT model_type, model_file_path FROM surface_models"
-                " WHERE id = %s AND project_id = %s",
-                (model_id, str(project_id)),
-            )
-            row = await cursor.fetchone()
-    if not stored or not row or row[0] != "dtm" or not row[1]:
-        return JSONResponse(
-            status_code=404,
-            content={"status": "error", "message": "DTM 격자가 없는 지표면 모델입니다."},
-        )
-    model_path = Path(resolve_stored_project_path(stored)) / str(row[1])
-    smooth_path = model_path.with_name(f"{model_path.stem}_smooth.npz")
-    npz_path = smooth_path if smooth and smooth_path.is_file() else model_path
-    if not npz_path.is_file():
-        return JSONResponse(
-            status_code=404,
-            content={"status": "error", "message": "DTM 격자 파일이 없습니다."},
-        )
+        try:
+            npz_path = await dtm_grid_npz(connection, project_id, model_id, smooth)
+        except LookupError as exc:
+            return JSONResponse(status_code=404, content={"status": "error", "message": str(exc)})
     grid_path = await asyncio.to_thread(dtm_grid_file, npz_path)
     return cached_file_response(request, grid_path, "application/octet-stream")
diff --git a/B05_Profile/B05_Profile_Structures_Router.py b/B05_Profile/B05_Profile_Structures_Router.py
index 020a16d9d..7a99051da 100644
--- a/B05_Profile/B05_Profile_Structures_Router.py
+++ b/B05_Profile/B05_Profile_Structures_Router.py
@@ -327,16 +327,13 @@ async def _migrate_structures(project_id: UUID, payload: StructureMigrateRequest
         # 정본이 이미 심는 자리(측점 계획 · 323-7) — 이름이 아니라 자리로 가름(옛 이름 되짚기 걷음)
         # · 추가 측점(368-2 · 이름 없는 일반측점)도 심는 자리 — 「기타」 구조물로 옮기지 않음
         from B05_Profile.B05_Profile_Engine_Sections import route_pipe_points
+        from B05_Profile.B05_Profile_Engine_Sections_Node import node_plan_stations
         from B05_Profile.B05_Profile_Plus_Stations import plus_chainages
 
-        planted = [
-            float(station["chainage_m"])
-            for station in plan_stations(
-                route_pipe_points(Path(root)),  # 관 = 지금 노선에 얹은 자리(472 덧)
-                existing,
-                plus_chainages(root),
-            )
-        ]
+        # 관 = 지금 노선에 얹은 자리(472 덧) · 측점 계획 = Node(511-B B-5) · 못 돌림 = 파이썬 짝
+        group = (route_pipe_points(Path(root)), existing, plus_chainages(root))
+        marks = (node_plan_stations([group]) or [plan_stations(*group)])[0]
+        planted = [float(station["chainage_m"]) for station in marks]
         legacy, standing = await _saved_irregular_stations(project_id, root, payload.route_id)
 
         # 표식 = "타입@위치". 원천(종단 정본의 비정규 측점)은 원복용으로 그대로 두고,
diff --git a/B05_Profile/B05_Profile_UI_IrregularStations.ts b/B05_Profile/B05_Profile_UI_IrregularStations.ts
index a425b540d..1286d9d34 100644
--- a/B05_Profile/B05_Profile_UI_IrregularStations.ts
+++ b/B05_Profile/B05_Profile_UI_IrregularStations.ts
@@ -10,7 +10,6 @@
  * chainage_m = 측점번호 × 측점간격(m) + 잔여거리(m). 측점간격은 `getInterval()`로 실시간 조회한다.
  * ========================================================================== */
 
-import { stationPartsLabel } from "../common_util/common_util_station";
 import { PIPE_DISPLAY_NAME } from "../common_util/common_util_structure_catalog";
 import {
   ESCAPE_ROUTE_DEFAULT_WIDTH_M,
@@ -26,6 +25,10 @@ import {
 } from "@config/config_frontend";
 import { PIPE_MATCH_M } from "../A00_Common/design/design_selection";
 
+// 그래프 측점 id · 측점 표기 = logic(511-B B-3) — 부르는 쪽은 그대로 여기서 받음
+import { irregularLabel } from "./logic/B05_Profile_Profile_Planted";
+export { irregularLabel, irregularStationId } from "./logic/B05_Profile_Profile_Planted";
+
 export interface IrregularStation {
   id: string;
   /** 측점번호 X. */
@@ -126,16 +129,6 @@ interface IrregularStationsCallbacks {
   onSelect: (station: IrregularStation | null) => void;
 }
 
-/** 비정규 측점의 그래프·3D·테이블 공용 식별자. 주입 측점의 station_id로도 쓴다. */
-export function irregularStationId(id: string): string {
-  return `irregular:${id}`;
-}
-
-/** 측점번호+잔여거리 표기 (예: 3+18 · 공용 표기 한 벌 — 거리는 정수로 보이기만). */
-export function irregularLabel(station: IrregularStation): string {
-  return stationPartsLabel(station.station, station.remainder);
-}
-
 function field(labelText: string, input: HTMLElement): HTMLLabelElement {
   const wrapper = document.createElement("label");
   wrapper.className = "b05-route__field";
diff --git a/B05_Profile/B05_Profile_UI_Panel_Fields.ts b/B05_Profile/B05_Profile_UI_Panel_Fields.ts
index 9fabc1037..066ca8a4a 100644
--- a/B05_Profile/B05_Profile_UI_Panel_Fields.ts
+++ b/B05_Profile/B05_Profile_UI_Panel_Fields.ts
@@ -7,6 +7,9 @@
 import { type ButtonVariant, createButton } from "@ui/ui_template_elements";
 import { currentLanguageIndex, ui_locales } from "@ui/ui_template_locale";
 
+// 법정 기준표 = logic(511-B B-3 · X5) — 부르는 쪽은 그대로 여기서 받음
+export { PROFILE_CRITERIA, SPEED_CHOICES, gradeLimitOf } from "./logic/B05_Profile_Grade_Criteria";
+
 export interface RoutePanelValues {
   contourInterval: number;
   /** 임도 종류 — 현행 3종(간선·산불진화·작업). branch(지선)는 폐지됐으나 기존
@@ -32,44 +35,9 @@ export interface RoutePanelValues {
   stationDisplay: { station: number; cumulative: number };
 }
 
-/**
- * 「임도설치 및 관리 등에 관한 규정」[별표 1-2] 기준값.
- * 등급을 바꾸면 이 값이 계획선 폼의 placeholder(미입력 시 서버 기본값)로 반영된다.
- * 실제 기본값 결정은 서버 config가 단일 소스이며 여기서는 안내만 한다.
- */
 /** 측점 간격(m) — 20m 고정(2026-08-18 사용자 확정, 입력 UI 삭제). */
 export const STATION_INTERVAL_M = 20;
 
-/* 종단기울기·종단곡선 반경 — 지식DB `설계제원_총괄 §6·§7`(간선·산불진화 공통,
- * 설계속도 40/30/20 → 7·10 / 8·12 / 9·14 %, 반경 450/250/100 m) 값과 일치한다
- * (2026-08-19 재점검). 서버 `legal_grade_limit_pct`가 같은 표를 쓰므로 화면 안내와
- * 실제 적용값이 어긋나지 않는다.
- *
- * ⚠ 미해결(사용자 협의 필요, 2026-08-19 재점검에서 확인):
- *   ① 등급 선택지가 간선·지선·작업인데 현행 규칙은 **지선 폐지**, 3종은 간선·
- *      산불진화·작업이다(설계제원_총괄 §1 [구현] 지침).
- *   ② 지식DB의 40/30/20 표는 **설계속도**별이고 간선·산불진화 공통이다. 지금은
- *      등급에 속도를 고정 매핑(trunk=40·branch=30·work=20)했는데, 작업임도는
- *      설계속도 20 이하 + 종단기울기 최대 20% 범위 조정이라는 별도 규정이다.
- *   ③ "최소 곡선반경" 입력 칸의 안내값이 **종단**곡선 반경(450/250/100)이다.
- *      평면 최소곡선반지름은 일반지형 60/30/15 (설계제원_총괄 §4).
- * 값을 임의로 바꾸지 않고 남긴다 — 기본값 확정은 사용자 협의 영역이다. */
-export const PROFILE_CRITERIA: Record<
-  RoutePanelValues["designSpeed"],
-  { grade: Record<RoutePanelValues["terrainType"], number>; radius: number }
-> = {
-  40: { grade: { normal: 7, special: 10 }, radius: 450 },
-  30: { grade: { normal: 8, special: 12 }, radius: 250 },
-  20: { grade: { normal: 9, special: 14 }, radius: 100 },
-};
-
-/** 적용 종단기울기 상한(%) — 넣은 값(> 0)이면 그 값 · 비웠으면 설계속도 · 지형 법정 기준(좌측 패널 · 페이지 설정 한 칸 463). */
-export const gradeLimitOf = (
-  speed: RoutePanelValues["designSpeed"],
-  terrain: RoutePanelValues["terrainType"],
-  typed: number | null,
-): number => (typed != null && typed > 0 ? typed : PROFILE_CRITERIA[speed].grade[terrain]);
-
 /** 임도 종류별 표시 이름 — 프로젝트 등록(B02)과 같은 말을 쓴다(2026-08-19 확정). */
 export const ROAD_TYPE_LABELS: Record<string, string> = {
   trunk: "간선임도",
@@ -78,14 +46,6 @@ export const ROAD_TYPE_LABELS: Record<string, string> = {
   branch: "작업임도(구 지선)",
 };
 
-/** 종류별로 고를 수 있는 설계속도 — 작업임도는 20 이하라 20만 둔다(별표2 Ⅰ.3). */
-export const SPEED_CHOICES: Record<string, Array<RoutePanelValues["designSpeed"]>> = {
-  trunk: [20, 30, 40],
-  fire: [20, 30, 40],
-  work: [20],
-  branch: [20],
-};
-
 export type WrappedInput = HTMLInputElement & { wrapper: HTMLLabelElement };
 
 export function L(key: keyof typeof ui_locales): string {
diff --git a/B05_Profile/B05_Profile_UI_Profile_Layout.ts b/B05_Profile/B05_Profile_UI_Profile_Layout.ts
index f5cdbfcd3..c372280a5 100644
--- a/B05_Profile/B05_Profile_UI_Profile_Layout.ts
+++ b/B05_Profile/B05_Profile_UI_Profile_Layout.ts
@@ -8,15 +8,12 @@
  * ========================================================================== */
 
 import { LONG_PAD } from "../B06_Section/B06_Section_UI_Section_Common";
-import { normalizedLongitudinal } from "./logic/B05_Profile_UI_Profile_Data";
 import { TABLE_TARGET_FONT_PX, tableCellWidthFor } from "./B05_Profile_UI_Profile_Table";
-import type { LongitudinalSection, SectionStation } from "../B06_Section/B06_Section_Api_Fetch";
-import {
-  irregularLabel,
-  irregularStationId,
-  type IrregularStation,
-} from "./B05_Profile_UI_IrregularStations";
-import { PLUS_OWNER_PREFIX } from "../common_util/common_util_structure_station";
+import type { LongitudinalSection } from "../B06_Section/B06_Section_Api_Fetch";
+
+// 최대 누가거리 · 그래프 측점 = logic(511-B B-3) — 부르는 쪽은 그대로 여기서 받음
+import { maxChainageOf } from "./logic/B05_Profile_Profile_Planted";
+export { irregularGraphStations, maxChainageOf } from "./logic/B05_Profile_Profile_Planted";
 
 /** 테이블 6행(구배 S · 계획고 · 지반고 · 측점 · 곡선 L · 곡선 R). 행 높이와 셀 폭에서
  *  글자 크기를 정하는 데 쓴다. 2026-09-06 사용자 지시로 12행에서 줄였다. */
@@ -40,39 +37,6 @@ export const STATION_SPACING_PX = tableCellWidthFor(TABLE_TARGET_FONT_PX) + CELL
  */
 export const PROFILE_SPACING_MULTIPLIER = 1.5;
 
-/** 유효 표고 샘플 기준의 노선 최대 chainage(m). 그래프·테이블이 같은 값을 써야 X축이 맞물린다. */
-export function maxChainageOf(data: LongitudinalSection): number {
-  const samples = normalizedLongitudinal(data).samples.filter(
-    (sample) => sample.valid !== false && Number.isFinite(sample.elevation_m ?? NaN),
-  );
-  return Math.max(data.length_m, samples[samples.length - 1]?.chainage_m ?? 1, 1);
-}
-
-/**
- * 비정규 측점을 그래프용 `SectionStation`으로 만든다. 그래프 렌더러는 chainage·라벨·kind만
- * 쓰므로 월드 좌표는 0으로 둔다(3D 마커용 좌표는 Page가 따로 보간). 범위 밖은 제외.
- */
-export function irregularGraphStations(
-  list: IrregularStation[],
-  maxChainage: number,
-): SectionStation[] {
-  return list
-    .filter((entry) => entry.chainage_m >= 0 && entry.chainage_m <= maxChainage + 1e-6)
-    .map((entry) => ({
-      station_id: irregularStationId(entry.id),
-      chainage_m: entry.chainage_m,
-      label: irregularLabel(entry),
-      kind: "irregular" as const,
-      // 추가 측점(368-2) = 일반측점 색 점선 · 끌기 없음
-      ...(entry.id.startsWith(PLUS_OWNER_PREFIX) ? { plus: true } : {}),
-      center_z: null,
-      azimuth_deg: null,
-      center_x: 0,
-      center_y: 0,
-      frame: { left_xy: [0, 0] as [number, number] },
-    }));
-}
-
 /** 종단면도 렌더러와 **같은** chainage → x(px) 매핑을 만든다 (테이블·버튼 정렬 기준). */
 export function chainageMapper(
   data: LongitudinalSection,
diff --git a/B05_Profile/B05_Profile_UI_Profile_Render.ts b/B05_Profile/B05_Profile_UI_Profile_Render.ts
index 13880cf22..ffa7410d0 100644
--- a/B05_Profile/B05_Profile_UI_Profile_Render.ts
+++ b/B05_Profile/B05_Profile_UI_Profile_Render.ts
@@ -23,11 +23,11 @@ import type { SectionDetailResponse } from "../B06_Section/B06_Section_Api_Fetch
 import { normalizedLongitudinal, toDesignProfile } from "./logic/B05_Profile_UI_Profile_Data";
 import {
   adjustStation,
-  setCurveRadius,
   type AlignmentBase,
   type AlignmentEdits,
   type ProfileAlignment,
 } from "./logic/B05_Profile_UI_Profile_Alignment";
+import { setCurveRadius } from "./logic/B05_Profile_UI_Profile_Alignment_Edit";
 import { createEditOverlay } from "./B05_Profile_UI_Profile_Edit";
 import { createRunHighlight } from "./B05_Profile_UI_Profile_RunHighlight";
 import {
diff --git a/B05_Profile/logic/B05_Profile_Grade_Criteria.ts b/B05_Profile/logic/B05_Profile_Grade_Criteria.ts
new file mode 100644
index 000000000..77de876da
--- /dev/null
+++ b/B05_Profile/logic/B05_Profile_Grade_Criteria.ts
@@ -0,0 +1,53 @@
+/* =============================================================================
+ * B05_Profile/logic/B05_Profile_Grade_Criteria.ts
+ * 종단 법정 기준표(설계속도 × 지형 → 종단기울기 상한 · 종단곡선 반경) · 종류별 설계속도 — 화면
+ * `B05_Profile_UI_Panel_Fields.ts` 에서 옮김(511-B B-3 · X5 · 순수 자료). 파이썬 표 =
+ * `config_system_design.FOREST_ROAD_PROFILE_CRITERIA`(추천 · 폴백 · 기본값 해석 몫) · 거울 시험 =
+ * resources/tester/test_442_2_grade_limit_mirror.py.
+ * ========================================================================== */
+
+export type DesignSpeed = 20 | 30 | 40;
+export type TerrainType = "normal" | "special";
+
+/**
+ * 「임도설치 및 관리 등에 관한 규정」[별표 1-2] 기준값.
+ * 등급을 바꾸면 이 값이 계획선 폼의 placeholder(미입력 시 서버 기본값)로 반영된다.
+ * 실제 기본값 결정은 서버 config가 단일 소스이며 여기서는 안내만 한다.
+ */
+/* 종단기울기·종단곡선 반경 — 지식DB `설계제원_총괄 §6·§7`(간선·산불진화 공통,
+ * 설계속도 40/30/20 → 7·10 / 8·12 / 9·14 %, 반경 450/250/100 m) 값과 일치한다
+ * (2026-08-19 재점검). 서버 `legal_grade_limit_pct`가 같은 표를 쓰므로 화면 안내와
+ * 실제 적용값이 어긋나지 않는다.
+ *
+ * ⚠ 미해결(사용자 협의 필요, 2026-08-19 재점검에서 확인):
+ *   ① 등급 선택지가 간선·지선·작업인데 현행 규칙은 **지선 폐지**, 3종은 간선·
+ *      산불진화·작업이다(설계제원_총괄 §1 [구현] 지침).
+ *   ② 지식DB의 40/30/20 표는 **설계속도**별이고 간선·산불진화 공통이다. 지금은
+ *      등급에 속도를 고정 매핑(trunk=40·branch=30·work=20)했는데, 작업임도는
+ *      설계속도 20 이하 + 종단기울기 최대 20% 범위 조정이라는 별도 규정이다.
+ *   ③ "최소 곡선반경" 입력 칸의 안내값이 **종단**곡선 반경(450/250/100)이다.
+ *      평면 최소곡선반지름은 일반지형 60/30/15 (설계제원_총괄 §4).
+ * 값을 임의로 바꾸지 않고 남긴다 — 기본값 확정은 사용자 협의 영역이다. */
+export const PROFILE_CRITERIA: Record<
+  DesignSpeed,
+  { grade: Record<TerrainType, number>; radius: number }
+> = {
+  40: { grade: { normal: 7, special: 10 }, radius: 450 },
+  30: { grade: { normal: 8, special: 12 }, radius: 250 },
+  20: { grade: { normal: 9, special: 14 }, radius: 100 },
+};
+
+/** 적용 종단기울기 상한(%) — 넣은 값(> 0)이면 그 값 · 비웠으면 설계속도 · 지형 법정 기준(좌측 패널 · 페이지 설정 한 칸 463). */
+export const gradeLimitOf = (
+  speed: DesignSpeed,
+  terrain: TerrainType,
+  typed: number | null,
+): number => (typed != null && typed > 0 ? typed : PROFILE_CRITERIA[speed].grade[terrain]);
+
+/** 종류별로 고를 수 있는 설계속도 — 작업임도는 20 이하라 20만 둔다(별표2 Ⅰ.3). */
+export const SPEED_CHOICES: Record<string, Array<DesignSpeed>> = {
+  trunk: [20, 30, 40],
+  fire: [20, 30, 40],
+  work: [20],
+  branch: [20],
+};
diff --git a/B05_Profile/logic/B05_Profile_Grade_Ground.ts b/B05_Profile/logic/B05_Profile_Grade_Ground.ts
index 01e724e0a..f5c73f0c6 100644
--- a/B05_Profile/logic/B05_Profile_Grade_Ground.ts
+++ b/B05_Profile/logic/B05_Profile_Grade_Ground.ts
@@ -110,11 +110,15 @@ function fitThrough(
   return baseZ;
 }
 
-/** 첫 계획선 꼭짓점(base_pvi · 0.000001 m) — 못 서는 땅이면 null(서버로 다시 셈). */
-export function groundFollowingBasePvi(input: GroundFollowingInput): AlignmentNode[] | null {
-  const profile = groundProfile(input.samples);
-  if (!profile) return null;
-  const { chainage, ground } = profile;
+/**
+ * 첫 계획선 꼭짓점(반올림 전) — 종단 지반(`groundProfile` 꼴) 위 측점마다 꼭짓점 · 서버 Node(511-B B-3)는
+ * 이 값으로 선형을 짓고 파이썬이 정본 꼴(0.000001 m)로 적음(파이썬 1순위와 같은 순서).
+ */
+export function groundFollowingNodes(
+  chainage: number[],
+  ground: number[],
+  input: Omit<GroundFollowingInput, "samples">,
+): AlignmentNode[] | null {
   const total = chainage[chainage.length - 1];
   if (!(total > 0)) return null;
 
@@ -133,8 +137,17 @@ export function groundFollowingBasePvi(input: GroundFollowingInput): AlignmentNo
   target[0] += input.startOffsetM ?? 0;
   target[target.length - 1] += input.endOffsetM ?? 0;
   const baseZ = passThrough(nodeS, target, input.policy);
-  return nodeS.map((s, index) => ({
-    chainage_m: roundTo(s, 6),
-    elevation_m: roundTo(baseZ[index], 6),
-  }));
+  return nodeS.map((s, index) => ({ chainage_m: s, elevation_m: baseZ[index] }));
+}
+
+/** 첫 계획선 꼭짓점(base_pvi · 0.000001 m) — 못 서는 땅이면 null(서버로 다시 셈). */
+export function groundFollowingBasePvi(input: GroundFollowingInput): AlignmentNode[] | null {
+  const profile = groundProfile(input.samples);
+  const nodes = profile && groundFollowingNodes(profile.chainage, profile.ground, input);
+  return (
+    nodes?.map((node) => ({
+      chainage_m: roundTo(node.chainage_m, 6),
+      elevation_m: roundTo(node.elevation_m, 6),
+    })) ?? null
+  );
 }
diff --git a/B05_Profile/logic/B05_Profile_Pipeline_Grade.ts b/B05_Profile/logic/B05_Profile_Pipeline_Grade.ts
index b7084ba0d..c2e79a615 100644
--- a/B05_Profile/logic/B05_Profile_Pipeline_Grade.ts
+++ b/B05_Profile/logic/B05_Profile_Pipeline_Grade.ts
@@ -52,7 +52,11 @@ import {
 } from "./B05_Profile_Grade_Carry";
 import { seatBornNodes } from "./B05_Profile_Grade_Seat";
 import { SECTION_STATION_INTERVAL_M } from "./B05_Profile_Sections_Stations";
-import { groundFollowingBasePvi, groundProfile } from "./B05_Profile_Grade_Ground";
+import {
+  groundFollowingBasePvi,
+  groundProfile,
+  type GroundFollowingInput,
+} from "./B05_Profile_Grade_Ground";
 import { DEFAULT_CURVE_LENGTH_M } from "./B05_Profile_Profile_CurveLaw";
 
 const xy = (line: ReadonlyArray<Vertex>): Array<{ x: number; y: number }> =>
@@ -295,6 +299,12 @@ export interface PlanlineDeps {
   savedLine(): Vertex[] | null;
   /** 노선 초안 첫 계획선 꼭짓점 = 서버 저장 종단 — 보기가 심은 측점(초안 자리 관 등)에 안 흔들림(365-5) · 없으면 `savedBase`. */
   storedPvi?(): AlignmentBase["basePvi"] | null;
+  /** 바뀐 자리 새 지반 첫 계획선 꼭짓점 — 계산 자리 「서버」 면 서버 Node 약속(511-B B-3) · null = 브라우저
+   *  `groundFollowingBasePvi`(단계 동기 그대로). */
+  groundPvi?(
+    input: GroundFollowingInput,
+    signal: AbortSignal,
+  ): Promise<AlignmentBase["basePvi"] | null> | null;
 }
 
 export function createPlanlineStage(deps: PlanlineDeps): StageFn<"planline"> {
@@ -311,13 +321,6 @@ export function createPlanlineStage(deps: PlanlineDeps): StageFn<"planline"> {
     }));
     const profile = groundProfile(samples);
     if (!profile) return saved; // 못 서는 땅 — 저장 기준 그대로(서버가 [저장] 때 다시 셈)
-    // 바뀐 자리 새 꼭짓점 = 서버 새 지반 첫 계획선(기본 L = config 짝 · 초기값 직선화 · 438)
-    const pviAt = (stations: number[]) =>
-      groundFollowingBasePvi({
-        samples,
-        stations,
-        policy: { ...saved.policy, default_curve_length_m: DEFAULT_CURVE_LENGTH_M },
-      }) ?? [];
     const savedLine = deps.savedLine();
     const span = savedLine ? changedSpan(xy(savedLine), xy(route.line)) : null;
     const savedPvi = deps.storedPvi?.() ?? saved.basePvi;
@@ -344,33 +347,40 @@ export function createPlanlineStage(deps: PlanlineDeps): StageFn<"planline"> {
       ...ground.stations.filter((station) => !born.includes(station.chainageM)),
       ...gone.map((chainageM) => ({ chainageM, kind: "structure" as const, id: null })),
     ];
-    const carried = span
-      ? carryBase(
-          xy(savedLine!),
-          xy(route.line),
-          savedPvi,
-          pviAt(homeStations.map((station) => station.chainageM)),
-        )
-      : savedPvi;
-    const home = span
-      ? seatRouteMoved(
-          baseOf(carried),
-          routeMovedStations(homeStations, xy(savedLine!), xy(route.line)),
-          edited.map(Number),
-        )
-      : carried;
-    const step = gone.length || born.length ? followMovedNodes(home, gone, born, edited) : null;
-    return {
-      policy: saved.policy, // 옛 기본 L 이어받음(서버 `carry_policy` 짝)
-      onlyExplicitCurves: saved.onlyExplicitCurves,
-      basePvi: step ? seatBornNodes(baseOf(home), step.nodes, step.seat, step.held) : home,
-      chainage: profile.chainage,
-      ground: profile.ground,
-      stations: ground.stations.map((station) => ({
-        station_id: stationIdOf(station.chainageM),
-        chainage_m: station.chainageM,
-      })),
+    const finish = (groundPvi: AlignmentBase["basePvi"]): AlignmentBase => {
+      const carried = span
+        ? carryBase(xy(savedLine!), xy(route.line), savedPvi, groundPvi)
+        : savedPvi;
+      const home = span
+        ? seatRouteMoved(
+            baseOf(carried),
+            routeMovedStations(homeStations, xy(savedLine!), xy(route.line)),
+            edited.map(Number),
+          )
+        : carried;
+      const step = gone.length || born.length ? followMovedNodes(home, gone, born, edited) : null;
+      return {
+        policy: saved.policy, // 옛 기본 L 이어받음(서버 `carry_policy` 짝)
+        onlyExplicitCurves: saved.onlyExplicitCurves,
+        basePvi: step ? seatBornNodes(baseOf(home), step.nodes, step.seat, step.held) : home,
+        chainage: profile.chainage,
+        ground: profile.ground,
+        stations: ground.stations.map((station) => ({
+          station_id: stationIdOf(station.chainageM),
+          chainage_m: station.chainageM,
+        })),
+      };
     };
+    // 바뀐 자리 새 꼭짓점 = 서버 새 지반 첫 계획선(기본 L = config 짝 · 초기값 직선화 · 438) · 계산 자리
+    // 「서버」 면 서버 Node(`groundPvi` · 511-B B-3)
+    const input = {
+      samples,
+      stations: homeStations.map((station) => station.chainageM),
+      policy: { ...saved.policy, default_curve_length_m: DEFAULT_CURVE_LENGTH_M },
+    };
+    const remote = span ? deps.groundPvi?.(input, ctx.signal) : null;
+    if (remote) return remote.then((nodes) => finish(nodes ?? []));
+    return finish(span ? (groundFollowingBasePvi(input) ?? []) : []);
   };
 }
 
diff --git a/B05_Profile/logic/B05_Profile_Pipeline_RouteGround.ts b/B05_Profile/logic/B05_Profile_Pipeline_RouteGround.ts
index e18bb4642..dc749709b 100644
--- a/B05_Profile/logic/B05_Profile_Pipeline_RouteGround.ts
+++ b/B05_Profile/logic/B05_Profile_Pipeline_RouteGround.ts
@@ -42,8 +42,15 @@ export interface RouteStageDeps {
   minRadiusM(): number;
   /** 초안이 없을 때(= 저장분 그대로) 그릴 노선 · 곡선표 — 없으면 null. */
   savedLine(): { line: Vertex[]; curves: DesignCurve[] } | null;
+  /** 계산 자리 route 「서버」(511-B B-5) — 서버 Node `route.polyline`(같은 `buildEditedPolyline`) 값 ·
+   *  null = 화면 셈 · 끊김 · 실패 = undefined(화면 셈으로). */
+  remote?(args: DraftArgs, signal: AbortSignal): Promise<BuiltLine | undefined> | null;
 }
 
+/** `buildEditedPolyline` 인자(곡선 길이 고정을 R 로 푼 뒤) — 화면 셈 · 서버 셈이 같은 값을 받음. */
+export type DraftArgs = Parameters<typeof buildEditedPolyline>;
+type BuiltLine = Pick<ReturnType<typeof buildEditedPolyline>, "vertices" | "curves">;
+
 /** 정점마다 누가거리 — 첫 점 0. */
 export function routeLineOf(line: Vertex[], curves: DesignCurve[] = []): RouteLine {
   const chainage = [0];
@@ -67,10 +74,19 @@ export function draftLine(
   draft: RouteDraft,
   minRadiusM: number,
 ): { line: Vertex[]; curves: DesignCurve[] } {
+  return shapedLine(buildEditedPolyline(...draftArgs(draft, minRadiusM)));
+}
+
+/** 초안 → `buildEditedPolyline` 인자(길이를 붙든 곡선은 교각에 맞춰 R 을 다시 잡음). */
+export function draftArgs(draft: RouteDraft, minRadiusM: number): DraftArgs {
   const nodes = draft.nodes.map((node): Vertex => [node[0], node[1]]);
   const radius = [...draft.curveRadius];
   applyArcLocks(nodes, [...draft.curveLock], [...draft.curveArc], radius);
-  const built = buildEditedPolyline(nodes, draft.curveOn, radius, minRadiusM);
+  return [nodes, draft.curveOn, radius, minRadiusM];
+}
+
+/** 그린 선 → 계약 꼴 · 서버 저장 자릿수(화면 셈 · 서버 셈 한 벌). */
+function shapedLine(built: BuiltLine): { line: Vertex[]; curves: DesignCurve[] } {
   return {
     line: built.vertices.map(xy4),
     curves: built.curves.map(({ start, apex, end, radius_m }) => ({
@@ -85,9 +101,15 @@ export function draftLine(
 export function createRouteStage(deps: RouteStageDeps): StageFn<"route"> {
   return (ctx) => {
     const draft = ctx.inputs.route;
-    const drawn = draft ? draftLine(draft, deps.minRadiusM()) : deps.savedLine();
-    if (!drawn || drawn.line.length < 2) throw new Error("그릴 노선이 없습니다.");
-    return routeLineOf(drawn.line, drawn.curves);
+    const done = (drawn: { line: Vertex[]; curves: DesignCurve[] } | null) => {
+      if (!drawn || drawn.line.length < 2) throw new Error("그릴 노선이 없습니다.");
+      return routeLineOf(drawn.line, drawn.curves);
+    };
+    if (!draft) return done(deps.savedLine());
+    const args = draftArgs(draft, deps.minRadiusM());
+    const asked = deps.remote?.(args, ctx.signal);
+    const local = () => shapedLine(buildEditedPolyline(...args));
+    return asked ? asked.then((built) => done(built ? shapedLine(built) : local())) : done(local());
   };
 }
 
diff --git a/B05_Profile/logic/B05_Profile_Profile_Planted.ts b/B05_Profile/logic/B05_Profile_Profile_Planted.ts
new file mode 100644
index 000000000..4e34ffc1f
--- /dev/null
+++ b/B05_Profile/logic/B05_Profile_Profile_Planted.ts
@@ -0,0 +1,55 @@
+/* =============================================================================
+ * B05_Profile/logic/B05_Profile_Profile_Planted.ts
+ * 종단도에 심는 비정규 측점 → 그래프 측점 · 노선 최대 누가거리(511-B B-3) — 화면
+ * `B05_Profile_UI_IrregularStations.ts` · `B05_Profile_UI_Profile_Layout.ts` 에서 옮김(순수 · 두 파일이
+ * 다시 내보냄). 서버 Node 묶음 planline 저장 기준(`design_planted_base.ts`)이 화면 파일을 안 끌게.
+ * ========================================================================== */
+
+import type { IrregularStation } from "../B05_Profile_UI_IrregularStations";
+import type { LongitudinalSection, SectionStation } from "../../B06_Section/B06_Section_Api_Fetch";
+import { stationPartsLabel } from "../../common_util/common_util_station";
+import { PLUS_OWNER_PREFIX } from "../../common_util/common_util_structure_station";
+import { normalizedLongitudinal } from "./B05_Profile_UI_Profile_Data";
+
+/** 비정규 측점의 그래프·3D·테이블 공용 식별자. 주입 측점의 station_id로도 쓴다. */
+export function irregularStationId(id: string): string {
+  return `irregular:${id}`;
+}
+
+/** 측점번호+잔여거리 표기 (예: 3+18 · 공용 표기 한 벌 — 거리는 정수로 보이기만). */
+export function irregularLabel(station: IrregularStation): string {
+  return stationPartsLabel(station.station, station.remainder);
+}
+
+/** 유효 표고 샘플 기준의 노선 최대 chainage(m). 그래프·테이블이 같은 값을 써야 X축이 맞물린다. */
+export function maxChainageOf(data: LongitudinalSection): number {
+  const samples = normalizedLongitudinal(data).samples.filter(
+    (sample) => sample.valid !== false && Number.isFinite(sample.elevation_m ?? NaN),
+  );
+  return Math.max(data.length_m, samples[samples.length - 1]?.chainage_m ?? 1, 1);
+}
+
+/**
+ * 비정규 측점을 그래프용 `SectionStation`으로 만든다. 그래프 렌더러는 chainage·라벨·kind만
+ * 쓰므로 월드 좌표는 0으로 둔다(3D 마커용 좌표는 Page가 따로 보간). 범위 밖은 제외.
+ */
+export function irregularGraphStations(
+  list: IrregularStation[],
+  maxChainage: number,
+): SectionStation[] {
+  return list
+    .filter((entry) => entry.chainage_m >= 0 && entry.chainage_m <= maxChainage + 1e-6)
+    .map((entry) => ({
+      station_id: irregularStationId(entry.id),
+      chainage_m: entry.chainage_m,
+      label: irregularLabel(entry),
+      kind: "irregular" as const,
+      // 추가 측점(368-2) = 일반측점 색 점선 · 끌기 없음
+      ...(entry.id.startsWith(PLUS_OWNER_PREFIX) ? { plus: true } : {}),
+      center_z: null,
+      azimuth_deg: null,
+      center_x: 0,
+      center_y: 0,
+      frame: { left_xy: [0, 0] as [number, number] },
+    }));
+}
diff --git a/B05_Profile/logic/B05_Profile_Sections_Generate.ts b/B05_Profile/logic/B05_Profile_Sections_Generate.ts
new file mode 100644
index 000000000..ed045ec1c
--- /dev/null
+++ b/B05_Profile/logic/B05_Profile_Sections_Generate.ts
@@ -0,0 +1,107 @@
+/* =============================================================================
+ * B05_Profile/logic/B05_Profile_Sections_Generate.ts
+ * 측점 생성 한 벌(PLAN 511-B B-2) — 노선 + 관 · 구조물 · 추가 측점 + DTM 격자 → 서버 `generate_sections`
+ * 꼴(종단 표본 · 측점 · 횡단 표본). 서버 측점 생성 길(`B05_Profile_Engine_Sections_Node.py` → Node
+ * `stations.sections`)이 부름 — 화면 묶음과 같은 측점(`buildStations`) · 같은 지반(`sectionsGround`).
+ *
+ * 측점 = `buildStations`(열쇠 · 종류 · 반경 · 확폭) · 지반 · 틀 · 상단측 = `sectionsGround` · 이름 =
+ *   `plantedStations`(카드 이름) · 칸 차례 · 자릿수 = 파이썬 `generate_sections` 그대로 + 측점 열쇠 `key`.
+ * 머리(schema_version · source · coordinate_reference · cad_exchange · options)는 파이썬이 붙임.
+ * 순수 — 화면 · fetch · 세션 없음.
+ * ========================================================================== */
+
+import type { DtmGrid } from "../../common_util/common_util_surface_sampler";
+import { stationsAlong } from "./B05_Profile_UI_RouteEdit_Frame";
+import { formatStation } from "../../B06_Section/logic/B06_Section_Station_Swap";
+import { stationIdOf } from "./B05_Profile_Pipeline_Grade";
+import {
+  buildStations,
+  lineLength,
+  plantedStations,
+  SECTION_INCLUDE_ENDPOINT,
+  SECTION_STATION_INTERVAL_M,
+  type StationsOptions,
+} from "./B05_Profile_Sections_Stations";
+import { sectionsGround, type GroundOptions } from "./B05_Profile_Sections_Ground";
+import type { PlanPipe, PlanStructure } from "../../common_util/common_util_structure_station";
+import type { DesignCurve, Vertex } from "../../A00_Common/design/logic/design_pipeline_types";
+
+export type GenerateOptions = Omit<StationsOptions, "registry"> & GroundOptions;
+
+const KIND: Record<string, string> = {
+  grid: "regular",
+  curve: "curve",
+  pipe: "irregular",
+  structure: "irregular",
+};
+
+/** 서버 `generate_sections` 꼴 몸통 — 종단(길이 · 표본 · 측점) · 횡단 · 요약 · 도면 기준고. */
+export function generateSections(
+  line: ReadonlyArray<Vertex>,
+  curves: ReadonlyArray<DesignCurve>,
+  pipes: ReadonlyArray<PlanPipe>,
+  structures: ReadonlyArray<PlanStructure>,
+  grid: DtmGrid,
+  options: GenerateOptions,
+) {
+  const stations = buildStations(line, curves, pipes, structures, options);
+  if (stations.length < 2) throw new Error("경로는 최소 2개의 (x, y, z) 좌표로 구성되어야 합니다.");
+  const gridM = stationsAlong(
+    line,
+    options.intervalM ?? SECTION_STATION_INTERVAL_M,
+    options.includeEndpoint ?? SECTION_INCLUDE_ENDPOINT,
+  );
+  const planted = plantedStations(gridM, lineLength(line), pipes, structures, options);
+  const chainages = stations.map((station) => station.chainageM);
+  const ground = sectionsGround(line, chainages, grid, options);
+  const crossSections = stations.map((station, index) => {
+    const at = ground.stations[index];
+    const mark = [...planted].find(([m]) => Math.abs(m - station.chainageM) < 1e-6)?.[1];
+    const kind = index === 0 ? "bp" : station.kind === "end" ? "ep" : KIND[station.kind];
+    const head: Record<string, unknown> = {
+      station_id: stationIdOf(station.chainageM),
+      chainage_m: at.chainage_m,
+      label: formatStation(station.chainageM) + (kind === "curve" ? " (MC)" : ""),
+      kind,
+      center_x: at.center_x,
+      center_y: at.center_y,
+      center_z: at.center_z,
+      azimuth_deg: station.azimuthDeg,
+      plan_radius_m: station.planRadiusM,
+      curve_outer_side: station.curveOuterSide,
+      curve_widening_m: station.curveWideningM,
+      uphill_side: at.uphill_side,
+      frame: {
+        origin: { x: at.center_x, y: at.center_y, z: at.center_z },
+        tangent_xy: at.tangent_xy,
+        left_xy: at.left_xy,
+        up_xyz: [0.0, 0.0, 1.0],
+      },
+    };
+    if (mark) {
+      head.structure = mark.title;
+      if (gridM.some((m) => Math.abs(m - station.chainageM) < 1e-6)) head.grid = true;
+    }
+    head.key = station.key;
+    return { head, samples: at.samples };
+  });
+  const z = ground.samples.flatMap((sample) => (sample.z === null ? [] : [sample.z]));
+  return {
+    longitudinal: {
+      length_m: ground.length_m,
+      samples: ground.samples,
+      stations: crossSections.map(({ head }) => head),
+    },
+    cross_sections: crossSections.map(({ head, samples }) => ({ ...head, samples })),
+    summary: {
+      station_count: stations.length,
+      cross_sample_count: crossSections.reduce((sum, { samples }) => sum + samples.length, 0),
+      invalid_longitudinal_samples: ground.samples.filter((sample) => !sample.valid).length,
+      invalid_cross_samples: crossSections.reduce(
+        (sum, { samples }) => sum + samples.filter((sample) => !sample.valid).length,
+        0,
+      ),
+    },
+    datum: z.length ? Math.floor(Math.min(...z) / 10) * 10 : null,
+  };
+}
diff --git a/B05_Profile/logic/B05_Profile_Sections_Ground.ts b/B05_Profile/logic/B05_Profile_Sections_Ground.ts
index b0b81e635..2b9fba094 100644
--- a/B05_Profile/logic/B05_Profile_Sections_Ground.ts
+++ b/B05_Profile/logic/B05_Profile_Sections_Ground.ts
@@ -69,9 +69,9 @@ export interface GroundOptions {
   longSampleIntervalM?: number;
 }
 
-/** 파이썬 `round(x, 6)` 자리. */
-export const round6 = (value: number): number => Math.round(value * 1e6) / 1e6;
-const round9 = (value: number): number => Math.round(value * 1e9) / 1e9;
+/** 파이썬 `round(x, 6)` 자리 — 십진 자릿수 반올림(곱셈 반올림 오차 없음 · 511-B B-2). */
+export const round6 = (value: number): number => Number(value.toFixed(6));
+const round9 = (value: number): number => Number(value.toFixed(9));
 
 function sample(grid: DtmGrid, x: number, y: number): GroundSample {
   const z = heightAt(grid, x, y);
diff --git a/B05_Profile/logic/B05_Profile_Sections_Stations.ts b/B05_Profile/logic/B05_Profile_Sections_Stations.ts
index bd95a988c..4d7f85ecc 100644
--- a/B05_Profile/logic/B05_Profile_Sections_Stations.ts
+++ b/B05_Profile/logic/B05_Profile_Sections_Stations.ts
@@ -239,31 +239,31 @@ export interface StationsOptions {
 }
 
 /** 노선 길이(m) — 길이 0 선분은 0(서버 `_clean_polyline`). */
-const lineLength = (line: ReadonlyArray<Vertex>): number =>
+export const lineLength = (line: ReadonlyArray<Vertex>): number =>
   line.reduce(
     (sum, vertex, index) =>
       index ? sum + Math.hypot(vertex[0] - line[index - 1][0], vertex[1] - line[index - 1][1]) : 0,
     0,
   );
 
-/** 측점 한 벌 — 서버 `generate_sections` 측점 목록과 같은 자리 · 종류 · 틀 · 반경 · 확폭(지반 null). */
-export function buildStations(
-  line: ReadonlyArray<Vertex>,
-  curves: ReadonlyArray<DesignCurve>,
+/** 심는 측점 한 자리 — 주인 종류 · id · 역할 · 카드 이름(서버 측점 `structure` 칸). */
+export interface PlantedMark {
+  kind: "pipe" | "structure";
+  id: string;
+  role: string;
+  title: string;
+}
+
+/** 심는 측점(관 · 구조물) — 격자 0.005 m 안이면 격자 자리에 얹고 서로 겹치면 앞선 것만(서버 `extras`). */
+export function plantedStations(
+  grid: ReadonlyArray<number>,
+  total: number,
   pipes: ReadonlyArray<PlanPipe>,
   structures: ReadonlyArray<PlanStructure>,
-  options: StationsOptions,
-): PipelineStation[] {
-  if (line.length < 2) return [];
-  const intervalM = options.intervalM ?? SECTION_STATION_INTERVAL_M;
-  const total = lineLength(line);
-  // 일반측점은 스냅이 옮기지 않음(요구 280-4) — MC 는 아래 곡선 측점으로 더함
-  const grid = stationsAlong(line, intervalM, options.includeEndpoint ?? SECTION_INCLUDE_ENDPOINT);
-  const spans = designSpans(line, curves);
-
-  // 심는 측점(관 · 구조물) — 격자 0.005 m 안이면 격자 자리에 얹고 서로 겹치면 앞선 것만(서버 `extras`).
+  options: Pick<StationsOptions, "types" | "registry" | "plus">,
+): Map<number, PlantedMark> {
   const pipeIds = new Set(pipes.map((pipe) => pipe.id ?? `pipe-${pipe.chainage_m.toFixed(2)}`));
-  const planted = new Map<number, { kind: "pipe" | "structure"; id: string; role: string }>();
+  const planted = new Map<number, PlantedMark>();
   for (const station of planStations(
     pipes,
     structures,
@@ -280,8 +280,27 @@ export function buildStations(
       kind: pipeIds.has(owner) ? "pipe" : "structure",
       id: owner,
       role: station.role,
+      title: station.title,
     });
   }
+  return planted;
+}
+
+/** 측점 한 벌 — 서버 `generate_sections` 측점 목록과 같은 자리 · 종류 · 틀 · 반경 · 확폭(지반 null). */
+export function buildStations(
+  line: ReadonlyArray<Vertex>,
+  curves: ReadonlyArray<DesignCurve>,
+  pipes: ReadonlyArray<PlanPipe>,
+  structures: ReadonlyArray<PlanStructure>,
+  options: StationsOptions,
+): PipelineStation[] {
+  if (line.length < 2) return [];
+  const intervalM = options.intervalM ?? SECTION_STATION_INTERVAL_M;
+  const total = lineLength(line);
+  // 일반측점은 스냅이 옮기지 않음(요구 280-4) — MC 는 아래 곡선 측점으로 더함
+  const grid = stationsAlong(line, intervalM, options.includeEndpoint ?? SECTION_INCLUDE_ENDPOINT);
+  const spans = designSpans(line, curves);
+  const planted = plantedStations(grid, total, pipes, structures, options);
   const withPlanted = [...new Set([...grid, ...planted.keys()])];
   // 곡선 측점(252-2) — MC 에 측점이 없으면 더함 · 값 자릿수 = 스냅 간격(스냅 끔 = 정수 m) · 격자 번호 없음
   const curved = curveStations(
diff --git a/B05_Profile/logic/B05_Profile_UI_Profile_Alignment.ts b/B05_Profile/logic/B05_Profile_UI_Profile_Alignment.ts
index c26217af1..e7d6f1919 100644
--- a/B05_Profile/logic/B05_Profile_UI_Profile_Alignment.ts
+++ b/B05_Profile/logic/B05_Profile_UI_Profile_Alignment.ts
@@ -1,6 +1,7 @@
 /* =============================================================================
  * B05_Profile_UI_Profile_Alignment.ts
- * 종단 계획선 선형(직선 + 측점 위 종단곡선) 프론트엔드 기하 계산.
+ * 종단 계획선 선형(직선 + 측점 위 종단곡선) 프론트엔드 기하 계산 — 구간 쉬프트 · R 입력은
+ * `B05_Profile_UI_Profile_Alignment_Edit.ts`(700줄 나눔 · 511-B B-3).
  *
  * 백엔드 `B05_Profile_Engine_Grade_Alignment.py`와 **같은 식**을 쓴다. 사용자가
  * 0.1m 버튼을 누를 때마다 서버를 오가지 않고 즉시 다시 그리기 위한 계산부이며,
@@ -159,7 +160,7 @@ export function emptyEdits(): AlignmentEdits {
 }
 
 /** 오름차순 x 배열 위에서의 선형 보간 (범위 밖은 양 끝값으로 클램프). */
-function interpolate(xs: number[], ys: number[], value: number): number {
+export function interpolate(xs: number[], ys: number[], value: number): number {
   if (!xs.length) return 0;
   if (value <= xs[0]) return ys[0];
   if (value >= xs[xs.length - 1]) return ys[ys.length - 1];
@@ -391,6 +392,14 @@ function trapezoidWeights(chainage: number[]): number[] {
 }
 
 /** 저장분·초안이 부분적으로 비어 있어도 계산이 터지지 않도록 편집 맵을 채운다. */
+/** `np.round(value, 6)` — 백만 배 · 짝수 쪽 반올림(rint) · 나눔(파이썬 표본 격자와 같은 값). */
+function npRound6(value: number): number {
+  const scaled = value * 1e6;
+  let rounded = Math.round(scaled);
+  if (rounded - scaled === 0.5 && rounded % 2 !== 0) rounded -= 1; // Math.round = .5 위로
+  return rounded / 1e6;
+}
+
 function normalizeEdits(edits: AlignmentEdits | undefined): AlignmentEdits {
   return {
     station_offsets: edits?.station_offsets ?? {},
@@ -437,7 +446,8 @@ export function buildAlignment(raw: AlignmentBase, input: AlignmentEdits): Profi
   // 격자만 쓰면 격자 사이에 놓인 변화점(배관 구조물 자리처럼 임의 chainage에 승격된 점)의
   // 모서리를 선이 잘라먹어, 종단곡선 R이 안 보이고 편집 지점과 선이 어긋나 끊긴 것처럼
   // 보인다(2026-08-03 사용자 보고). 곡선 구간 끝점까지 넣어야 직선→곡선 이음이 정확히 붙는다.
-  const sampleChainages = new Set<number>(base.chainage.map((value) => Number(value.toFixed(3))));
+  // 격자 자리 = 0.000001 m(파이썬 `np.round(merged, 6)` 와 같은 값 — 서버 Node 정본 · 511-B B-3).
+  const sampleChainages = new Set<number>(base.chainage.map(npRound6));
   const first = base.chainage[0];
   const last = base.chainage[base.chainage.length - 1];
   for (const extra of [
@@ -445,7 +455,7 @@ export function buildAlignment(raw: AlignmentBase, input: AlignmentEdits): Profi
     ...curves.flatMap((curve) => [curve.bvc_m, curve.chainage_m, curve.evc_m]),
   ]) {
     if (extra >= first - 1e-6 && extra <= last + 1e-6) {
-      sampleChainages.add(Number(extra.toFixed(3)));
+      sampleChainages.add(npRound6(extra));
     }
   }
   const samples: AlignmentSample[] = [...sampleChainages]
@@ -614,86 +624,6 @@ export function controlElevationAt(alignment: ProfileAlignment, chainageM: numbe
   return node ? node.elevation_m : planElevationAt(alignment, chainageM);
 }
 
-/**
- * 구간 이동에서 실제로 움직일 두 지점(2026-08-23 사용자 개념 확정).
- *
- * 구간 끝이 사용자 변화점(틸팅한 점)이면 그 점이 직접 움직인다 — 반복 쉬프트.
- * 고정점(BP·EP·자동 변화점 = 횡단배수 앵커)이면 **절대 움직이지 않고**, 구간 안쪽
- * 틸트 안 된 정규 측점 중 외곽(첫/끝)을 힌지로 승격시킨다 — 힌지에 라운드가 생기고
- * 고정점과는 직선으로 이어진다. 힌지 둘을 만들 수 없으면 null(쉬프트 불가 구간:
- * 안쪽 미틸트 측점 2개 미만).
- */
-export function shiftMovingPoints(
-  alignment: ProfileAlignment,
-  segment: AlignmentSegment,
-): [number, number] | null {
-  const offsets = alignment.edits.station_offsets;
-  const movable = (chainage: number): boolean => offsets[chainageKey(chainage)] !== undefined;
-  const interior = alignment.stations
-    .map((station) => station.chainage_m)
-    .filter((chainage) => chainage > segment.from_m + 1e-6 && chainage < segment.to_m - 1e-6);
-  const left = movable(segment.from_m) ? segment.from_m : interior[0];
-  const right = movable(segment.to_m) ? segment.to_m : interior[interior.length - 1];
-  if (left === undefined || right === undefined) return null;
-  if (right - left < 1e-6) return null;
-  return [left, right];
-}
-
-/**
- * 구간 평행이동 — 움직일 두 지점(끝 변화점 또는 승격 힌지)에 같은 델타를 준다.
- * 두 지점 사이 직선의 기울기는 보존되고, 고정점과의 연결 직선·라운드만 다시 잡힌다.
- * 라운드(중앙종거) 탓에 1클릭이 정확히 delta가 되도록 화면 계획고 기준으로 되먹인다.
- */
-export function shiftSegment(
-  base: AlignmentBase,
-  edits: AlignmentEdits,
-  segment: AlignmentSegment,
-  delta: number,
-): AlignmentEdits {
-  const current = buildAlignment(base, edits);
-  const moving = shiftMovingPoints(current, segment);
-  if (!moving) return edits;
-  const baseS = base.basePvi.map((node) => node.chainage_m);
-  const baseZ = base.basePvi.map((node) => node.elevation_m);
-  const targets = moving.map((chainage) => planElevationAt(current, chainage) + delta);
-  const offsets = { ...edits.station_offsets };
-  moving.forEach((chainage) => {
-    const key = chainageKey(chainage);
-    const seed =
-      offsets[key] ?? planElevationAt(current, chainage) - interpolate(baseS, baseZ, chainage);
-    offsets[key] = Number((seed + delta).toFixed(6));
-  });
-  for (let pass = 0; pass < FEEDBACK_PASSES; pass += 1) {
-    const trial = buildAlignment(base, { ...edits, station_offsets: offsets });
-    let worst = 0;
-    moving.forEach((chainage, index) => {
-      const key = chainageKey(chainage);
-      const error = targets[index] - planElevationAt(trial, chainage);
-      worst = Math.max(worst, Math.abs(error));
-      offsets[key] = Number((offsets[key] + error).toFixed(6));
-    });
-    if (worst < FEEDBACK_TOLERANCE_M) break;
-  }
-  return { ...edits, station_offsets: offsets };
-}
-
-/**
- * 곡선 행의 R 입력을 저장한다. R이 1차 값이므로 그대로 담고, 곡선길이는
- * L = R × |대수차| 로 매 렌더마다 다시 계산된다(계획고를 편집해도 R은 유지된다).
- * 빈 값이면 키를 지워 정책 기본 반경으로 돌아간다.
- */
-export function setCurveRadius(
-  edits: AlignmentEdits,
-  curve: AlignmentCurve,
-  radiusM: number,
-): AlignmentEdits {
-  const key = chainageKey(curve.chainage_m);
-  const curveRadii = { ...edits.curve_radii };
-  if (!Number.isFinite(radiusM) || radiusM <= 0) delete curveRadii[key];
-  else curveRadii[key] = Number(radiusM.toFixed(6));
-  return { ...edits, curve_radii: curveRadii };
-}
-
 export function hasEdits(edits: AlignmentEdits): boolean {
   const safe = normalizeEdits(edits);
   return Object.keys(safe.station_offsets).length > 0 || Object.keys(safe.curve_radii).length > 0;
diff --git a/B05_Profile/logic/B05_Profile_UI_Profile_Alignment_Edit.ts b/B05_Profile/logic/B05_Profile_UI_Profile_Alignment_Edit.ts
new file mode 100644
index 000000000..5877c0d9c
--- /dev/null
+++ b/B05_Profile/logic/B05_Profile_UI_Profile_Alignment_Edit.ts
@@ -0,0 +1,100 @@
+/* =============================================================================
+ * B05_Profile/logic/B05_Profile_UI_Profile_Alignment_Edit.ts
+ * 종단 계획선 편집 도구 — 구간 평행이동(쉬프트) · 곡선 R 입력. `B05_Profile_UI_Profile_Alignment.ts`
+ * 에서 나눔(700줄 · 511-B B-3) · 선형 짓기(`buildAlignment`)는 그 파일.
+ * ========================================================================== */
+
+import {
+  buildAlignment,
+  chainageKey,
+  interpolate,
+  planElevationAt,
+  type AlignmentBase,
+  type AlignmentCurve,
+  type AlignmentEdits,
+  type AlignmentSegment,
+  type ProfileAlignment,
+} from "./B05_Profile_UI_Profile_Alignment";
+
+const FEEDBACK_PASSES = 4;
+const FEEDBACK_TOLERANCE_M = 1e-4;
+
+/**
+ * 구간 이동에서 실제로 움직일 두 지점(2026-08-23 사용자 개념 확정).
+ *
+ * 구간 끝이 사용자 변화점(틸팅한 점)이면 그 점이 직접 움직인다 — 반복 쉬프트.
+ * 고정점(BP·EP·자동 변화점 = 횡단배수 앵커)이면 **절대 움직이지 않고**, 구간 안쪽
+ * 틸트 안 된 정규 측점 중 외곽(첫/끝)을 힌지로 승격시킨다 — 힌지에 라운드가 생기고
+ * 고정점과는 직선으로 이어진다. 힌지 둘을 만들 수 없으면 null(쉬프트 불가 구간:
+ * 안쪽 미틸트 측점 2개 미만).
+ */
+export function shiftMovingPoints(
+  alignment: ProfileAlignment,
+  segment: AlignmentSegment,
+): [number, number] | null {
+  const offsets = alignment.edits.station_offsets;
+  const movable = (chainage: number): boolean => offsets[chainageKey(chainage)] !== undefined;
+  const interior = alignment.stations
+    .map((station) => station.chainage_m)
+    .filter((chainage) => chainage > segment.from_m + 1e-6 && chainage < segment.to_m - 1e-6);
+  const left = movable(segment.from_m) ? segment.from_m : interior[0];
+  const right = movable(segment.to_m) ? segment.to_m : interior[interior.length - 1];
+  if (left === undefined || right === undefined) return null;
+  if (right - left < 1e-6) return null;
+  return [left, right];
+}
+
+/**
+ * 구간 평행이동 — 움직일 두 지점(끝 변화점 또는 승격 힌지)에 같은 델타를 준다.
+ * 두 지점 사이 직선의 기울기는 보존되고, 고정점과의 연결 직선·라운드만 다시 잡힌다.
+ * 라운드(중앙종거) 탓에 1클릭이 정확히 delta가 되도록 화면 계획고 기준으로 되먹인다.
+ */
+export function shiftSegment(
+  base: AlignmentBase,
+  edits: AlignmentEdits,
+  segment: AlignmentSegment,
+  delta: number,
+): AlignmentEdits {
+  const current = buildAlignment(base, edits);
+  const moving = shiftMovingPoints(current, segment);
+  if (!moving) return edits;
+  const baseS = base.basePvi.map((node) => node.chainage_m);
+  const baseZ = base.basePvi.map((node) => node.elevation_m);
+  const targets = moving.map((chainage) => planElevationAt(current, chainage) + delta);
+  const offsets = { ...edits.station_offsets };
+  moving.forEach((chainage) => {
+    const key = chainageKey(chainage);
+    const seed =
+      offsets[key] ?? planElevationAt(current, chainage) - interpolate(baseS, baseZ, chainage);
+    offsets[key] = Number((seed + delta).toFixed(6));
+  });
+  for (let pass = 0; pass < FEEDBACK_PASSES; pass += 1) {
+    const trial = buildAlignment(base, { ...edits, station_offsets: offsets });
+    let worst = 0;
+    moving.forEach((chainage, index) => {
+      const key = chainageKey(chainage);
+      const error = targets[index] - planElevationAt(trial, chainage);
+      worst = Math.max(worst, Math.abs(error));
+      offsets[key] = Number((offsets[key] + error).toFixed(6));
+    });
+    if (worst < FEEDBACK_TOLERANCE_M) break;
+  }
+  return { ...edits, station_offsets: offsets };
+}
+
+/**
+ * 곡선 행의 R 입력을 저장한다. R이 1차 값이므로 그대로 담고, 곡선길이는
+ * L = R × |대수차| 로 매 렌더마다 다시 계산된다(계획고를 편집해도 R은 유지된다).
+ * 빈 값이면 키를 지워 정책 기본 반경으로 돌아간다.
+ */
+export function setCurveRadius(
+  edits: AlignmentEdits,
+  curve: AlignmentCurve,
+  radiusM: number,
+): AlignmentEdits {
+  const key = chainageKey(curve.chainage_m);
+  const curveRadii = { ...edits.curve_radii };
+  if (!Number.isFinite(radiusM) || radiusM <= 0) delete curveRadii[key];
+  else curveRadii[key] = Number(radiusM.toFixed(6));
+  return { ...edits, curve_radii: curveRadii };
+}
diff --git a/B05_Profile/logic/B05_Profile_UI_RouteEdit_Curve.ts b/B05_Profile/logic/B05_Profile_UI_RouteEdit_Curve.ts
index 20fe1dcae..79cb6abcc 100644
--- a/B05_Profile/logic/B05_Profile_UI_RouteEdit_Curve.ts
+++ b/B05_Profile/logic/B05_Profile_UI_RouteEdit_Curve.ts
@@ -52,6 +52,13 @@ const RAD_PER_DEG = Math.PI / 180;
 /** 짝: `build_planned_polyline` 의 `hairpin_min_radius_m` 기본값(배향곡선 하한). */
 export const HAIRPIN_MIN_RADIUS_M = 10.0;
 
+/** 짝: 파이썬 `f"{x:.1f}"` — 딱 반(x = 홀수/4 · 12.25)이면 짝수 쪽(`toFixed` 는 큰 쪽 · 위반 글이 갈림). */
+export function fixed1(x: number): string {
+  if (!Number.isInteger(x * 4) || Number.isInteger(x * 2)) return x.toFixed(1);
+  const floor = Math.floor(x * 10);
+  return ((floor % 2 === 0 ? floor : floor + 1) / 10).toFixed(1);
+}
+
 /** 두 **직선**(선분 아님)이 만나는 자리. 나란하면 null. */
 export function intersect(a1: Vertex, a2: Vertex, b1: Vertex, b2: Vertex): Vertex | null {
   const dx1 = a2[0] - a1[0];
@@ -308,12 +315,10 @@ export function buildEditedPolyline(
     if (radius <= 0 || geometry === null) continue;
 
     if (radius < minRadiusM) {
-      node.violations.push(`최소곡선반지름 미달(${radius.toFixed(1)} < ${minRadiusM.toFixed(1)}m)`);
+      node.violations.push(`최소곡선반지름 미달(${fixed1(radius)} < ${fixed1(minRadiusM)}m)`);
     }
     if (radius < hairpinMinRadiusM) {
-      node.violations.push(
-        `배향곡선 하한 미달(${radius.toFixed(1)} < ${hairpinMinRadiusM.toFixed(1)}m)`,
-      );
+      node.violations.push(`배향곡선 하한 미달(${fixed1(radius)} < ${fixed1(hairpinMinRadiusM)}m)`);
     }
     node.radius_m = radius;
     node.tangent_m = tangent;
diff --git a/B05_Profile/logic/B05_Profile_UI_RouteEdit_Edits.ts b/B05_Profile/logic/B05_Profile_UI_RouteEdit_Edits.ts
index 359bd14f1..3f3dee74b 100644
--- a/B05_Profile/logic/B05_Profile_UI_RouteEdit_Edits.ts
+++ b/B05_Profile/logic/B05_Profile_UI_RouteEdit_Edits.ts
@@ -330,6 +330,34 @@ export interface RouteNodeEdit {
   arc_m: number | null;
 }
 
+/** 넣은 편집값 → 곡선표 `edits`(430) — 겹친 점(앞 노드 0.5 m 안)은 빼고 저장 노드와 같은 자리 · 칸이 짧으면
+ *  켬 · 자동. ⚠ 짝 `B05_Profile_Route_NodeEdits.node_edits` · 서버 노선 저장 = Node `route.polyline`(511-B B-5). */
+export function nodeEdits(
+  points: ReadonlyArray<Vertex>,
+  flags: ReadonlyArray<boolean | null> | null = null,
+  radii: ReadonlyArray<number | null> | null = null,
+  locks: ReadonlyArray<string | null> | null = null,
+  arcs: ReadonlyArray<number | null> | null = null,
+): RouteNodeEdit[] {
+  const at = <T>(values: ReadonlyArray<T> | null, index: number): T | null =>
+    values && index < values.length ? values[index] : null;
+  const kept: Vertex[] = [];
+  const edits: RouteNodeEdit[] = [];
+  points.forEach((point, index) => {
+    const last = kept[kept.length - 1];
+    if (last && Math.hypot(point[0] - last[0], point[1] - last[1]) <= DUPLICATE_TOLERANCE_M) return;
+    kept.push(point);
+    const lock = at(locks, index);
+    edits.push({
+      curve: flags && index < flags.length ? Boolean(flags[index]) : true,
+      radius_m: at(radii, index),
+      lock: lock === "radius" || lock === "arc" ? lock : null,
+      arc_m: at(arcs, index),
+    });
+  });
+  return edits;
+}
+
 /**
  * 서버가 준 노드·곡선을 **꺾임점 하나 = 곡선 하나**로 편다(2026-09-07).
  *
diff --git a/B06_Section/B06_Section_Router_Calc.py b/B06_Section/B06_Section_Router_Calc.py
index a7780ada9..6ee07bea6 100644
--- a/B06_Section/B06_Section_Router_Calc.py
+++ b/B06_Section/B06_Section_Router_Calc.py
@@ -5,6 +5,7 @@
 브라우저가 계산 자리 판(`calc_sites.json`)에서 묶음을 「서버」로 둔 때만 부름
 (`design_calc_server.ts`).
 권한 = 프로젝트 접근(`protected_with_company`) · 호출량 = `main.py` 미들웨어 · 본문 상한 `MAX_BODY`.
+파일 경로 = 서버가 프로젝트 id 로 정함(그 storage 안 DTM 격자) · 입력에 경로 칸 = 400.
 실행 = 늘 떠 있는 Node 하나(`common_util_calc_runner.run_calc_served`) ·
 정본 저장 길은 이 창구를 안 씀.
 단계(`stage.*`) · 화면 길(`cross.refresh`) = 서버가 DTM 격자 경로 · 구조물 정의를 채움 —
@@ -19,7 +20,13 @@ from uuid import UUID
 from fastapi import APIRouter, Request
 from fastapi.responses import JSONResponse
 
-from common_util.common_util_calc_runner import PAGE_IDS, STAGE_IDS, run_calc_served
+from common_util.common_util_calc_runner import (
+    PAGE_IDS,
+    SERVER_ONLY_IDS,
+    STAGE_IDS,
+    run_calc_served,
+)
+from config.config_db import get_db_pool
 
 router = APIRouter(prefix="/api/projects", tags=["B06 Calc Server"])
 
@@ -31,6 +38,38 @@ def _error(status: int, message: str) -> JSONResponse:
     return JSONResponse(status_code=status, content={"status": "error", "message": message})
 
 
+async def _server_grid(project_id: UUID, inputs: dict) -> str | None:
+    """파일 경로는 브라우저 값을 안 씀 — 단계 격자 = `{model_id, smooth, design}` → 이 프로젝트
+    storage 안 DTM 격자 경로(서버가 정함) · 경로 칸(`stages.grid.path` · `stations.grid`) = 거절."""
+    stations = inputs.get("stations")
+    if isinstance(stations, dict) and "grid" in stations:
+        return "격자 경로는 서버가 정함"
+    stages = inputs.get("stages")
+    grid = stages.get("grid") if isinstance(stages, dict) else None
+    if grid is None:
+        return None
+    if not isinstance(grid, dict) or "path" in grid:
+        return "격자 경로는 서버가 정함 — {model_id, smooth, design}"
+    model_id, design = grid.get("model_id"), grid.get("design", "las")
+    if (
+        not isinstance(model_id, int)
+        or isinstance(model_id, bool)
+        or design not in ("las", "sheet")
+    ):
+        return "격자 = {model_id: 정수, smooth, design: las | sheet}"
+    from B05_Profile.B05_Profile_Router_Terrain import dtm_grid_npz
+    from common_util.common_util_surface_sampler import dtm_grid_file
+
+    async with get_db_pool().acquire() as connection:
+        try:
+            npz = await dtm_grid_npz(connection, project_id, model_id, bool(grid.get("smooth")))
+        except LookupError as exc:
+            return str(exc)
+    path = await asyncio.to_thread(dtm_grid_file, npz)
+    stages["grid"] = {"path": str(path), "design": design}
+    return None
+
+
 @router.post("/{project_id}/calc", response_model=None)
 async def run_calc_endpoint(project_id: UUID, request: Request) -> dict | JSONResponse:
     declared = request.headers.get("content-length")
@@ -51,8 +90,18 @@ async def run_calc_endpoint(project_id: UUID, request: Request) -> dict | JSONRe
         return _error(400, "run = id 목록")
     if not isinstance(inputs, dict):
         return _error(400, "inputs = 객체")
+    if SERVER_ONLY_IDS.intersection(run):
+        return _error(400, "서버 측점 생성은 창구 밖")
+    problem = await _server_grid(project_id, inputs)
+    if problem:
+        return _error(400, problem)
     if set(run) & (STAGE_IDS | PAGE_IDS):
         await _server_context(project_id, inputs)
+    if {"stations.list", "stations.plan"} & set(run) and isinstance(inputs.get("stations"), dict):
+        # 심는 측점 · 카드 이름 표 = 서버 구조물 정의(서버 측점 생성과 같은 표 · 511-B B-2)
+        from B05_Profile.B05_Profile_Engine_Sections_Node import structure_table
+
+        inputs["stations"]["definition"] = (await asyncio.to_thread(structure_table))[1]
     try:
         answer = await asyncio.to_thread(run_calc_served, run, inputs)
     except ValueError as exc:
@@ -77,16 +126,19 @@ async def _server_context(project_id: UUID, inputs: dict) -> None:
     )
     from config.config_db import run_with_connection
 
+    inputs["definition"] = load_definition()
+    stages = inputs.get("stages")
+    # 단계 격자 = 화면이 `{model_id…}` 로 보낸 때는 `_server_grid` 가 정함 — 칸이 없을 때만 채움
+    fill_stages = isinstance(stages, dict) and "grid" not in stages
+    if not fill_stages and not isinstance(inputs.get("cross_refresh"), dict):
+        return
     stored, params = await asyncio.gather(
         run_with_connection(get_project_storage_relative_path, project_id),
         run_with_connection(get_surface_confirmation_params, str(project_id)),
     )
     root = Path(resolve_stored_project_path(stored))
     grid = await asyncio.to_thread(design_grid_file, root, params)
-    inputs["definition"] = load_definition()
-    if isinstance(inputs.get("stages"), dict):
-        inputs["stages"]["grid"] = (
-            {"path": str(grid), "design": design_terrain(params)} if grid else None
-        )
+    if fill_stages:
+        stages["grid"] = {"path": str(grid), "design": design_terrain(params)} if grid else None
     if isinstance(inputs.get("cross_refresh"), dict):
         inputs["cross_refresh"]["grid"] = str(grid) if grid else None
diff --git a/common_util/common_util_calc_runner.py b/common_util/common_util_calc_runner.py
index 96657f539..9ff01ea8d 100644
--- a/common_util/common_util_calc_runner.py
+++ b/common_util/common_util_calc_runner.py
@@ -38,6 +38,9 @@ NODE_IDS = frozenset(
         "excavation.trench",
         "corridor.mesh",
         "profile.seat",
+        "profile.base",
+        "profile.alignment",
+        "profile.carry",
         "facility.plus_follow",
         "facility.follow",
         "cross.design",
@@ -46,8 +49,14 @@ NODE_IDS = frozenset(
         "stations.carry",
         "facility.attach",
         "cross.enforce",
+        "stations.list",
+        "stations.sections",
+        "route.polyline",
+        "stations.plan",
     }
 )
+# 창구(`/calc`)가 안 받는 id — 서버 파일 경로를 입력으로 받음(측점 생성 · 511-B B-2)
+SERVER_ONLY_IDS = frozenset({"stations.sections"})
 # 시험 길(`design_calc_node_trial.ts` `TRIAL` 표와 같음) — 조작 중 브라우저 함수를 서버가 같은 TS 로
 TRIAL_IDS = frozenset(
     {
diff --git a/common_util/common_util_calc_sites.py b/common_util/common_util_calc_sites.py
index b51b69843..5ea83e911 100644
--- a/common_util/common_util_calc_sites.py
+++ b/common_util/common_util_calc_sites.py
@@ -31,8 +31,9 @@ GROUPS: tuple[dict[str, Any], ...] = (
         "why": "quantity",
     },
     {"key": "carry", "nos": ["R9", "F10"], "switchable": True, "fixed": None, "why": "carry"},
-    # 묶음 단계 다섯(511-B · 단계째 서버 Node `stage.*`) — 짝 모으기 B-2 ~ B-5 끝난 줄부터 엶
-    {"key": "route", "nos": ["R1", "R3"], "switchable": False, "fixed": "both", "why": "pair_B5"},
+    # 묶음 단계(511-B · 단계째 서버 Node `stage.*`) — 짝 모으기 B-3 ~ B-5 끝난 줄부터 엶
+    # 노선(511-B B-5 · 노선 저장 폴리라인 = Node `route.polyline` · 조작 중 「서버」 = 같은 id)
+    {"key": "route", "nos": ["R1", "R3"], "switchable": True, "fixed": None, "why": None},
     {
         "key": "follow",
         "nos": ["P5", "P6", "F1", "F2"],
@@ -40,19 +41,21 @@ GROUPS: tuple[dict[str, Any], ...] = (
         "fixed": "both",
         "why": "pair_B5",
     },
+    # 측점(511-B B-2 · 서버 측점 생성 = Node `stations.sections` · 조작 중 「서버」 = `stations.list`)
     {
         "key": "stations",
         "nos": ["R5", "R6", "R7", "F3"],
-        "switchable": False,
-        "fixed": "both",
-        "why": "pair_B2",
+        "switchable": True,
+        "fixed": None,
+        "why": None,
     },
+    # 종단 = 짝 모음 끝(B-3 · 서버 Node `profile.base` · `profile.alignment`) — 엶
     {
         "key": "profile",
         "nos": ["P1", "P2", "P3", "P4", "P8"],
-        "switchable": False,
-        "fixed": "both",
-        "why": "pair_B3",
+        "switchable": True,
+        "fixed": None,
+        "why": None,
     },
     # cross = 짝 모음 끝(B-4) — server = 묶음 cross 를 서버 Node 가 같은 TS 로(DTM 아닌 지표면 = 브라우저)
     {
diff --git a/common_util/common_util_route_follow.py b/common_util/common_util_route_follow.py
index 019f89b44..0056e1a98 100644
--- a/common_util/common_util_route_follow.py
+++ b/common_util/common_util_route_follow.py
@@ -19,6 +19,7 @@
 
 from __future__ import annotations
 
+import logging
 import math
 from typing import Any, Iterable, Sequence
 
@@ -33,6 +34,7 @@ from common_util.common_util_structure_station import (
 )
 from config.config_system import SECTION_STATION_INTERVAL_M, STRUCTURE_ROUTE_DRIFT_MAX_M
 
+logger = logging.getLogger(__name__)
 _POSITION_KEYS = ("chainage_m", "start_m", "end_m")
 _FOLLOW_KEYS = ("placement", *_POSITION_KEYS, "x", "y")
 #: 노선 밖 판정(m) — 투영이 시점 앞 · 종점 뒤로 이만큼 넘으면 측점 안 세움(459 · TS 짝).
@@ -96,8 +98,51 @@ def fill_structure_coordinates(
     `previous` = 저장 전 정본 {structure_id: 항목} — 자리(누가거리 셋)가 그대로면 옛 좌표를 지킨다
     (노선이 바뀌어 멀어진 땅 자리를 다음 저장이 노선 위로 덮지 않게). 보낸 좌표가 그 누가거리를
     낳으면(지금 노선 따라감 = 제자리) 그 좌표를 살린다(410 · 옮긴 자리 · 따라간 땅 자리) — 낡은
-    좌표(누가거리만 옮김)는 노선 위로. TS 짝 = `placeOnLine`. `only_missing` = 읽을 때.
+    좌표(누가거리만 옮김)는 노선 위로. `only_missing` = 읽을 때.
+    셈 = TS `fillStructureCoordinates`(Node `facility.follow` + fill · 511-B B-5) · Node 못 돌림 =
+    파이썬 짝 `_fill_structure_coordinates_py`.
     """
+    items = list(items)
+    line = _line(xy)
+    if line is None or not items:
+        return 0
+    keys = ("structure_id", *_FOLLOW_KEYS)
+    rows = [{key: getattr(item, key, None) for key in keys} for item in items]
+    old = {
+        sid: {key: getattr(item, key, None) for key in keys}
+        for sid, item in (previous or {}).items()
+    }
+    results = run_calc(
+        ["facility.follow"],
+        {
+            "follow": {
+                "items": rows,
+                "line": [[x, y] for x, y in line.coords],
+                "interval_m": SECTION_STATION_INTERVAL_M,
+                "fill": {"previous": old, "only_missing": only_missing},
+            }
+        },
+    )
+    if results is None:
+        logger.warning("구조물 좌표 맞춤 Node 못 돌림 — 파이썬 짝")
+        return _fill_structure_coordinates_py(
+            items, xy, previous=previous, only_missing=only_missing
+        )
+    out = results["facility.follow"]
+    for item, at in zip(items, out["xy"], strict=True):
+        if at is not None:
+            item.x, item.y = float(at["x"]), float(at["y"])
+    return int(out["filled"])
+
+
+def _fill_structure_coordinates_py(
+    items: Iterable[Any],
+    xy: Sequence[Sequence[float]],
+    *,
+    previous: dict[str, Any] | None = None,
+    only_missing: bool = False,
+) -> int:
+    """`fill_structure_coordinates` 파이썬 짝(Node 못 돌릴 때 · 거울 시험 기준)."""
     line = _line(xy)
     if line is None:
         return 0
diff --git a/common_util/common_util_route_follow.ts b/common_util/common_util_route_follow.ts
index 9c5a8d063..cabbe3918 100644
--- a/common_util/common_util_route_follow.ts
+++ b/common_util/common_util_route_follow.ts
@@ -11,6 +11,8 @@
  *   - `projectOnPolyline` = shapely `LineString.project`(가장 가까운 첫 선분) · `distance`.
  *   - `placeOnLine` 좌표 낡음 판정 ↔ 파이썬 `fill_structure_coordinates`(좌표가 그 누가거리를 낳으면 살림 ·
  *     아니면 누가거리의 노선 위 자리 · 410) · 거울 시험 = resources/tester/test_410_follow_xy.py.
+ *   - `fillStructureCoordinates` = 저장 때 좌표 맞춤 그 자체(옛 좌표 지킴 · 0.1 mm · 서버 Node `facility.fill_xy` ·
+ *     파이썬 짝 = Node 못 돌릴 때) · 노선 위 자리 `pointAtChainage` 는 `placeOnLine` 과 한 벌(511-B B-5).
  *   - `placeOnLine` 의 좌표 없는 관 · `rebasePipeDraft` 는 TS 만 — 좌표 없는 세션 관 초안(정본 PUT 꼴)을 따라가기
  *     전 자리로 · 노선을 저장한 [저장]이 서버가 따라 옮긴 관 위에 초안을 얹음(349-0u).
  *   - `rebaseStructureDraft` 도 TS 만 — 구조물 초안을 서버가 따라 옮긴 정본 위에(459 · 관 짝).
@@ -129,21 +131,73 @@ export function placeOnLine<S extends FollowingStructure & { id?: string | null
       Math.abs(was.chainage_m - item.chainage_m) <= SAME_STATION_M
     )
       return { ...item, x: was.x, y: was.y };
-    let walked = 0;
-    for (let index = 1; index < line.length; index += 1) {
-      const a = line[index - 1];
-      const b = line[index];
-      const span = Math.hypot(b.x - a.x, b.y - a.y);
-      if (span > 0 && (walked + span >= item.chainage_m || index === line.length - 1)) {
-        const t = Math.min(1, Math.max(0, (item.chainage_m - walked) / span));
-        return { ...item, x: a.x + (b.x - a.x) * t, y: a.y + (b.y - a.y) * t };
-      }
-      walked += span;
-    }
-    return item;
+    const at = pointAtChainage(line, item.chainage_m);
+    return at ? { ...item, ...at } : item;
   });
 }
 
+/** 누가거리의 노선 위 자리 — shapely `LineString.interpolate` 꼴(선분 길이 √ · 넘으면 끝점 · 음수 = 끝에서) +
+ *  0.1 mm(파이썬 `round(·, 4)` · F1 저장 좌표 맞춤과 같은 값 · 511-B B-5). 노선 없음(점 둘 미만 · 길이 0) = null. */
+export function pointAtChainage(line: ReadonlyArray<XY>, chainageM: number): XY | null {
+  const spans = line.slice(1).map((b, index) => {
+    const a = line[index];
+    return Math.sqrt((b.x - a.x) ** 2 + (b.y - a.y) ** 2);
+  });
+  const length = spans.reduce((sum, span) => sum + span, 0);
+  if (!(length > 0)) return null;
+  const target = chainageM < 0 ? Math.max(0, length + chainageM) : chainageM;
+  // ponytail: toFixed = 딱 반(홀수/32 m)에서 큰 쪽 · 파이썬 round 는 짝수 쪽 — 실측 좌표엔 안 생김
+  const round4 = (value: number) => Number(value.toFixed(4));
+  let walked = 0;
+  for (let index = 0; index < spans.length; index += 1) {
+    if (walked + spans[index] > target) {
+      const a = line[index];
+      const b = line[index + 1];
+      const t = Math.max(0, (target - walked) / spans[index]);
+      return { x: round4((b.x - a.x) * t + a.x), y: round4((b.y - a.y) * t + a.y) };
+    }
+    walked += spans[index];
+  }
+  const end = line[line.length - 1];
+  return { x: round4(end.x), y: round4(end.y) };
+}
+
+type Positioned = FollowingStructure & { structure_id?: string | null };
+
+/** 저장 때 구조물 좌표 맞춤(F1 · 511-B B-5 · 파이썬 `fill_structure_coordinates` 같은 규칙 · 서버 Node
+ *  `facility.fill_xy`) — 누가거리 없음 · `onlyMissing` 에 좌표 있음 = 그대로 · `previous`(저장 전 정본 ·
+ *  structure_id)와 자리 셋(기준 · 시작 · 끝)이 같고 옛 좌표 있음 = 옛 좌표 · 좌표가 그 누가거리를 낳음 = 그대로 ·
+ *  그 밖 = 노선 위 자리(`pointAtChainage`). 돌려줌 = 항목마다 새 좌표(안 바뀜 null) · 채운 수. */
+export function fillStructureCoordinates(
+  items: ReadonlyArray<Positioned>,
+  line: ReadonlyArray<XY>,
+  previous: Readonly<Record<string, Positioned>> | null = null,
+  onlyMissing = false,
+  intervalM: number | null = null,
+): { xy: Array<XY | null>; filled: number } {
+  const total = line
+    .slice(1)
+    .reduce((sum, b, index) => sum + Math.hypot(b.x - line[index].x, b.y - line[index].y), 0);
+  if (line.length < 2 || !(total > 0)) return { xy: items.map(() => null), filled: 0 };
+  const same = (a: Positioned, b: Positioned) =>
+    (a.chainage_m ?? null) === (b.chainage_m ?? null) &&
+    (a.start_m ?? null) === (b.start_m ?? null) &&
+    (a.end_m ?? null) === (b.end_m ?? null);
+  let filled = 0;
+  const xy = items.map((item): XY | null => {
+    if (item.chainage_m == null) return null;
+    const placed = item.x != null && item.y != null;
+    if (onlyMissing && placed) return null;
+    const old = previous?.[item.structure_id ?? ""];
+    if (old && same(old, item) && old.x != null) return { x: old.x, y: old.y! };
+    if (placed && holdsStation(item, line, intervalM)) return null;
+    const at = pointAtChainage(line, item.chainage_m);
+    if (at) filled += 1;
+    return at;
+  });
+  return { xy, filled };
+}
+
 /** 노선을 저장한 [저장] — 세션 관 초안(목록 한 벌)을 서버가 따라 옮긴 관(`after`) 위에 얹은 목록(누가거리 순).
  *  초안 관이 노선 저장 전 정본(`before`) 자리 그대로면(따라감 전 값) · 따라가기만 했으면(땅 위 자리 = 정본 x · y ·
  *  누가거리만 화면 계산 · 428) 서버 자리로(구간 끝 · 좌표도) · 사용자가 옮긴 · 새로 놓은 관은 그대로 · 서버가 새로
diff --git a/common_util/common_util_surface_sampler.py b/common_util/common_util_surface_sampler.py
index d8b9c44a2..32d86f06f 100644
--- a/common_util/common_util_surface_sampler.py
+++ b/common_util/common_util_surface_sampler.py
@@ -131,7 +131,9 @@ class DtmGridSampler:
 # ponytail: 지표면 4벌(sheet 격자 한 벌 약 17 MB) — 서버 프로세스 하나 전제 · 늘면 maxsize 를 셈.
 @lru_cache(maxsize=4)
 def _open_dtm(path: str, _mtime_ns: int, _size: int) -> DtmGridSampler:
-    return DtmGridSampler.from_npz(path)
+    sampler = DtmGridSampler.from_npz(path)
+    sampler.source = path  # npz 경로 — 서버 측점 생성이 같은 격자를 Node 에 넘김(511-B B-2)
+    return sampler
 
 
 #: 브라우저로 보내는 격자 꼴(`dtm_grid_bytes`) 머리 — TS `parseDtmGrid` 가 같은 값을 봄.
diff --git a/resources/master_template/calc_sites.json b/resources/master_template/calc_sites.json
index b40c9a101..9934379fa 100644
--- a/resources/master_template/calc_sites.json
+++ b/resources/master_template/calc_sites.json
@@ -5,6 +5,9 @@
     "corridor_mesh": "both",
     "quantity": "both",
     "carry": "both",
+    "route": "both",
+    "stations": "both",
+    "profile": "both",
     "cross": "both",
     "fixed_browser": "both"
   }
diff --git a/resources/tester/helper_271_profile_settings.cjs b/resources/tester/helper_271_profile_settings.cjs
index 53cdfe39b..74264b478 100644
--- a/resources/tester/helper_271_profile_settings.cjs
+++ b/resources/tester/helper_271_profile_settings.cjs
@@ -29,6 +29,7 @@ const REAL = new Set(
     "B05_Profile/B05_Profile_Api_PageSettings.ts",
     "B05_Profile/B05_Profile_UI_Page_Latest.ts",
     "B05_Profile/B05_Profile_UI_Panel_Fields.ts",
+    "B05_Profile/logic/B05_Profile_Grade_Criteria.ts", // 법정 기준표(511-B B-3 · 화면에서 옮김)
   ].map((rel) => path.join(ROOT, rel)),
 );
 const anything = () =>
diff --git a/resources/tester/helper_442_2_page_settings.cjs b/resources/tester/helper_442_2_page_settings.cjs
index d816d89e1..d6ea93bf6 100644
--- a/resources/tester/helper_442_2_page_settings.cjs
+++ b/resources/tester/helper_442_2_page_settings.cjs
@@ -189,7 +189,7 @@ async function run() {
   out.backToZero = ends.endOffsetsOf(base, ends.withEndOffset(base, both, "start", 0));
 
   // ── ④ 기준표 ──
-  const fields = load(path.join(ROOT, "B05_Profile", "B05_Profile_UI_Panel_Fields.ts"), {});
+  const fields = load(path.join(ROOT, "B05_Profile", "logic", "B05_Profile_Grade_Criteria.ts"), {});
   out.criteria = fields.PROFILE_CRITERIA;
   out.speedChoices = fields.SPEED_CHOICES;
 
diff --git a/resources/tester/helper_472_1_paths.py b/resources/tester/helper_472_1_paths.py
index 9540479a3..d4fd974c8 100644
--- a/resources/tester/helper_472_1_paths.py
+++ b/resources/tester/helper_472_1_paths.py
@@ -97,7 +97,7 @@ def values_of(
 
 def _keys(longitudinal: dict[str, Any], sections: list[dict[str, Any]], root: Path) -> list:
     """서버 측점 열쇠(`station_keys` · 노선 저장 이월이 쓰는 한 벌) — 상세 측점 차례."""
-    from B05_Profile.B05_Profile_Route_Save_Parts import station_keys
+    from B05_Profile.B05_Profile_Route_Save_Parts import keyed_stations, station_keys
     from B05_Profile.B05_Profile_Structures_Repository import load_structures
     from common_util.common_util_drainage_pipes import pipe_points_path_in, read_pipe_points_file
 
@@ -107,7 +107,9 @@ def _keys(longitudinal: dict[str, Any], sections: list[dict[str, Any]], root: Pa
         (longitudinal.get("profile_alignment") or {}).get("policy", {}).get("station_interval_m")
         or 20.0
     )
-    found = station_keys(longitudinal.get("stations") or [], pipes, structures, interval)
+    found = keyed_stations(longitudinal.get("stations") or []) or station_keys(
+        longitudinal.get("stations") or [], pipes, structures, interval
+    )
     by_m = {round(at, 3): key for key, at in found.items()}
     return [by_m.get(round(float(s["chainage_m"]), 3)) for s in sections]
 
@@ -179,7 +181,11 @@ def server_route(root: Path) -> dict[str, Any]:
     from B05_Profile.B05_Profile_Engine_Grade_Carry import carry_policy
     from B05_Profile.B05_Profile_Engine_Sections import run_section_generation
     from B05_Profile.B05_Profile_Engine_Sections_Core import SectionGenerationOptions
-    from B05_Profile.B05_Profile_Route_Save_Parts import carry_cross_inputs, station_keys
+    from B05_Profile.B05_Profile_Route_Save_Parts import (
+        carry_cross_inputs,
+        keyed_stations,
+        station_keys,
+    )
     from B05_Profile.B05_Profile_Router import _apply_alignment_edits
     from B05_Profile.B05_Profile_Structures_Repository import load_structures
     from B06_Section.B06_Section_Engine_Design import ROUTE_CARRY_KEYS
@@ -221,7 +227,9 @@ def server_route(root: Path) -> dict[str, Any]:
     _, structures = load_structures(str(root))
     interval = float(options["station_interval_m"])
     old_keys = station_keys(saved["longitudinal"]["stations"], pipes, structures, interval)
-    new_keys = station_keys(new_long.get("stations") or [], pipes, structures, interval)
+    new_keys = keyed_stations(new_long.get("stations") or []) or station_keys(
+        new_long.get("stations") or [], pipes, structures, interval
+    )
     designs = {
         round(float(s["chainage_m"]), 3): s["design"]
         for s in saved["cross_sections"]
diff --git a/resources/tester/run_511_b5_route_save_timing.py b/resources/tester/run_511_b5_route_save_timing.py
new file mode 100644
index 000000000..e47c6e40e
--- /dev/null
+++ b/resources/tester/run_511_b5_route_save_timing.py
@@ -0,0 +1,114 @@
+# -*- coding: utf-8 -*-
+"""511-B B-5 노선 저장 체인 시간 · 값 — 검증 프로젝트의 지금 노드 · 편집표 그대로 저장(수동 실행).
+
+같은 노선이라 값은 그대로(새 노선 행 번호만 바뀜) · 초기값 안 건드림(`as_initial` 끔).
+갈래 = 파이썬 짝(Node 폴리라인 · 좌표 맞춤 끔) / Node 를 번갈아 N 번 · 저장 뒤 정본 파일 해시
+(노선 csv · 노드 · 곡선표 · 구조물 · 관 · 추가 측점 · 종단 · 횡단)가 처음과 같은지.
+쓰는 법: `./venv/Scripts/python.exe resources/tester/run_511_b5_route_save_timing.py <id> [N]`
+"""
+
+import asyncio
+import hashlib
+import json
+import logging
+import statistics
+import sys
+import time
+from pathlib import Path
+from uuid import UUID
+
+ROOT = Path(__file__).resolve().parents[2]
+sys.path.insert(0, str(ROOT))
+
+from config.config_db import close_db_pool, init_db_pool  # noqa: E402
+
+CANON = (
+    "B05_Profile/route/planned_route.csv",
+    "B05_Profile/route/planned_route_nodes.csv",
+    "B05_Profile/route/planned_route_curves.json",
+    "B05_Profile/route/route_main.geojson",
+    "B05_Profile/route/structures.json",
+    "B05_Profile/route/plus_stations.json",
+    "B04_PreProcess/drainage/edits/pipe_points.json",
+)
+
+
+def _hashes(root: Path) -> dict[str, str]:
+    files = [root / name for name in CANON]
+    files += sorted((root / "B06_Section").rglob("*.json"))
+    return {
+        str(path.relative_to(root)): hashlib.sha256(path.read_bytes()).hexdigest()[:16]
+        for path in files
+        if path.is_file()
+    }
+
+
+async def _save(project_id: UUID, python: bool) -> float:
+    from B05_Profile import B05_Profile_Route_Polyline_Write as writer
+    from B05_Profile import B05_Profile_Router_Replan as replan
+    from B05_Profile.B05_Profile_Route_Save import RouteSaveRequest
+    from common_util import common_util_route_follow as follow
+
+    plan = await replan.read_route_plan(project_id)
+    edits = plan["node_edits"]
+    body = RouteSaveRequest(
+        vertices=[
+            {"x": n["x"], "y": n["y"], "curve": e["curve"], "radius_m": e["radius_m"]}
+            for n, e in zip(plan["nodes"], edits, strict=True)
+        ],
+        station_snap=bool(plan.get("station_snap")),
+        station_snap_step=plan.get("station_snap_step"),
+    )
+    real = (writer.node_polyline, follow.fill_structure_coordinates)
+    if python:
+        writer.node_polyline = lambda *a: None
+        follow.fill_structure_coordinates = follow._fill_structure_coordinates_py
+    try:
+        started = time.perf_counter()
+        result = await replan.replan_route(project_id, body)
+        seconds = time.perf_counter() - started
+    finally:
+        writer.node_polyline, follow.fill_structure_coordinates = real
+    status = getattr(result, "status_code", 200)
+    assert status == 200, getattr(result, "body", result)
+    return seconds
+
+
+async def main(project_id: UUID, rounds: int) -> None:
+    from B05_Profile import B05_Profile_Router_Replan as replan
+
+    logging.basicConfig(level=logging.WARNING, format="%(message)s")
+    await init_db_pool()
+    try:
+        root, _ = await replan._project_paths(project_id)
+        first = _hashes(root)
+        times: dict[str, list[float]] = {"python": [], "node": []}
+        for _ in range(rounds):
+            for kind in ("python", "node"):
+                times[kind].append(await _save(project_id, kind == "python"))
+                after = _hashes(root)
+                changed = sorted(
+                    k for k in first.keys() | after.keys() if first.get(k) != after.get(k)
+                )
+                print(f"{kind}: {times[kind][-1]:.2f} s · 바뀐 정본 {len(changed)} {changed[:5]}")
+        print(
+            json.dumps(
+                {
+                    k: {
+                        "median_s": round(statistics.median(v), 2),
+                        "runs": [round(x, 2) for x in v],
+                    }
+                    for k, v in times.items()
+                },
+                ensure_ascii=False,
+            )
+        )
+    finally:
+        from common_util.common_util_calc_runner import _SERVED
+
+        _SERVED.stop()
+        await close_db_pool()
+
+
+if __name__ == "__main__":
+    asyncio.run(main(UUID(sys.argv[1]), int(sys.argv[2]) if len(sys.argv) > 2 else 3))
diff --git a/resources/tester/test_309_2_calc_sites.py b/resources/tester/test_309_2_calc_sites.py
index 8e883105b..8bd6ee21e 100644
--- a/resources/tester/test_309_2_calc_sites.py
+++ b/resources/tester/test_309_2_calc_sites.py
@@ -63,9 +63,12 @@ def test_묶음_여덟_줄_등록부_전부():
         "corridor_mesh",
         "quantity",
         "carry",
+        "route",
+        "stations",
+        "profile",  # 511-B B-3 엶
         "cross",  # 511-B B-4 끝에 엶
         "fixed_browser",
-    }  # 511-A 셋 더
+    }  # 511-A 셋 더 · 511-B B-2 stations · B-5 route
     for group in calc_sites.GROUPS:
         got = {sites[no] for no in group["nos"]}
         if group["fixed"] == "browser":
@@ -156,7 +159,7 @@ def test_읽기_로그인_쓰기_시스템_관리자만(client):
 def test_잠금_모르는_줄_400_감사_한_줄(client):
     http, _role, board, log = client
     url = "/api/dashboard/admin/calc-sites"
-    for bad in ({"profile": "server"}, {"fixed_server": "both"}, {"nope": "server"}):
+    for bad in ({"follow": "server"}, {"fixed_server": "both"}, {"nope": "server"}):
         assert http.put(url, json={"sites": bad}).status_code == 400, bad
     assert http.put(url, json={"sites": {"ground_sample": "browser"}}).status_code == 400
     assert log == []
diff --git a/resources/tester/test_309_2_calc_sites_browser.py b/resources/tester/test_309_2_calc_sites_browser.py
index c79724ed6..d301cae7e 100644
--- a/resources/tester/test_309_2_calc_sites_browser.py
+++ b/resources/tester/test_309_2_calc_sites_browser.py
@@ -150,12 +150,14 @@ def test_시스템_관리자_카드_창_G1_서버_길(browser):
         calcs = [row for row in rows if not row["head"]]
         assert len(heads) == 12 and len(calcs) == 45  # 511-B 단계 다섯 줄 · F9 폼 기본값
         whys = {row["name"].split(" · ")[0]: row["why"] for row in calcs}
-        for no, n in {"R1": 5, "F2": 5, "R6": 2, "P2": 3}.items():
+        for no, n in {"F2": 5}.items():
             assert whys[no] == f"짝 모으는 중 · B-{n}", no
         assert whys["C1"].startswith("끄면 횡단을 서버 Node")  # 511-B B-4 엶
         assert heads[0]["boxes"] == [[True, False], [True, True]]  # G1 묶음 머리 = 바꿀 수 있음
         editable = [row["name"] for row in calcs if not row["boxes"][0][1]]
         opened = ["G1", "D3", "E1", "F7", "F8", "C4", "R9", "F10"]  # 511-A ③ ④ 더
+        opened += ["R1", "R3", "R5", "R6", "R7", "F3"]  # 511-B B-5 노선 · B-2 측점
+        opened += ["P1", "P2", "P3", "P4", "P8"]  # 511-B B-3 종단 엶
         opened += ["G2", "G4", "C1", "C2", "C3", "C5", "C6", "F4", "F5", "F6"]  # 511-B B-4
         opened += ["R2", "R4", "R8", "P7", "C7", "D4"]  # ⑧ 시험용
         assert [name.split(" · ")[0] for name in editable] == opened
diff --git a/resources/tester/test_438_1_initial_straighten.py b/resources/tester/test_438_1_initial_straighten.py
index c142b4cfa..8d5690c81 100644
--- a/resources/tester/test_438_1_initial_straighten.py
+++ b/resources/tester/test_438_1_initial_straighten.py
@@ -236,7 +236,11 @@ def test_부르는_곳():
         return (ROOT / rel).read_text(encoding="utf-8")
 
     profile = read("B05_Profile/B05_Profile_Engine_Grade_Profile.py")
-    assert "base_z = straight_pass_through(base_s, base_z, policy)" in profile
+    # 1순위 첫 계획선 = 서버 Node(511-B B-3 · TS `groundFollowingNodes` → `passThrough`)
+    assert "ground_following={" in profile
+    assert "const baseZ = passThrough(nodeS, target, input.policy);" in read(
+        "B05_Profile/logic/B05_Profile_Grade_Ground.ts"
+    )
     assert "straight_pass_through(base_s, target, policy, lambda z: _hold(" in read(
         "B05_Profile/B05_Profile_Engine_RouteInitial_Profile.py"
     )
diff --git a/resources/tester/test_442_2_grade_limit_mirror.py b/resources/tester/test_442_2_grade_limit_mirror.py
index 9dce7a895..74e9bfaf9 100644
--- a/resources/tester/test_442_2_grade_limit_mirror.py
+++ b/resources/tester/test_442_2_grade_limit_mirror.py
@@ -1,6 +1,7 @@
 """PLAN 448(442-2) 거울 — 「페이지 설정」 TS 기준표 ↔ 파이썬 법정 기준 전수.
 
-TS `B05_Profile_UI_Panel_Fields.ts` PROFILE_CRITERIA · SPEED_CHOICES 와 `gradeLimitPct` 규칙
+TS `logic/B05_Profile_Grade_Criteria.ts`(511-B B-3 · 화면 `_UI_Panel_Fields.ts` 에서 옮김)
+PROFILE_CRITERIA · SPEED_CHOICES 와 `gradeLimitPct` 규칙
 (고를 수 없는 속도 = 첫 선택지 · 넣은 값 > 0 이면 그 값 · 아니면 표)을 파이썬
 `FOREST_ROAD_PROFILE_CRITERIA` · `resolve_grade_options(...).max_grade_pct` 와 임도 종류 × 속도 ×
 지형 × 입력 유무 전부 대조. TS 표는 `helper_442_2_page_settings.cjs` 가 꺼냄.
diff --git a/resources/tester/test_472_3_calc_registry.py b/resources/tester/test_472_3_calc_registry.py
index 7c711a90e..6fc53c51b 100644
--- a/resources/tester/test_472_3_calc_registry.py
+++ b/resources/tester/test_472_3_calc_registry.py
@@ -42,6 +42,9 @@ NODE_IDS = {
     "excavation.trench",
     "corridor.mesh",
     "profile.seat",
+    "profile.base",
+    "profile.alignment",
+    "profile.carry",
     "facility.plus_follow",
     "facility.follow",
     "cross.design",
@@ -50,6 +53,10 @@ NODE_IDS = {
     "stations.carry",
     "facility.attach",  # 511-B B-4 — GET 형상 얹기
     "cross.enforce",  # 511-B B-4 — [저장] 횡단 한 바퀴
+    "stations.list",
+    "stations.sections",
+    "route.polyline",
+    "stations.plan",
 }
 
 pytestmark = pytest.mark.skipif(
@@ -108,23 +115,8 @@ GEOMETRY_PULLS = (
     # 노선 바뀐 [저장] 넘김 patch(472-6 6-B) — 세션 칸 → 설계 칸 얹기가 관 벽 · 단 · 세월 · BOX 기본값(위 그림 파일)을 씀
     "B06_Section/B06_Section_Route_Carry_Patch.ts",
 )
-# 묶음 단계 입구(511-B B-1 · `design_calc_node_stages.ts`) — planline 저장 기준
-# (`plantedBase`)이 종단도 측점 표 · 관 세션 id 파일을 끎(모듈 맨 위 DOM · 세션 없음)
-# — B-3 이 logic 으로 옮기면 빈 목록.
-STAGE_PULLS = (
-    "A00_Common/b_page_state.ts",
-    "A00_Common/design/design_pipe_ids.ts",
-    "A00_Common/design/design_pipeline_base.ts",
-    "A00_Common/design/design_profile_base.ts",
-    "A00_Common/design/design_selection.ts",
-    "A00_Common/design/design_store.ts",
-    "A00_Common/design/design_structure_status.ts",
-    "B05_Profile/B05_Profile_UI_IrregularStations.ts",
-    "B05_Profile/B05_Profile_UI_Profile_Layout.ts",
-    "B05_Profile/B05_Profile_UI_Profile_Table.ts",
-    "B06_Section/B06_Section_UI_Section_Common.ts",
-)
-KNOWN_PULLS = set(SESSION_PULLS) | set(GEOMETRY_PULLS) | set(STAGE_PULLS)
+# 묶음 단계 입구(511-B B-1) planline 저장 기준(`plantedBase`) 끌림 11 = B-3 이 logic 으로 옮겨 걷음
+KNOWN_PULLS = set(SESSION_PULLS) | set(GEOMETRY_PULLS)
 
 
 def _node(*args: str, timeout: int = 120) -> str:
diff --git a/resources/tester/test_472_3_calc_runner.py b/resources/tester/test_472_3_calc_runner.py
index 9e223bc18..75e718f8b 100644
--- a/resources/tester/test_472_3_calc_runner.py
+++ b/resources/tester/test_472_3_calc_runner.py
@@ -69,8 +69,8 @@ def test_실행기_값_server_calc_와_같음() -> None:
 
 
 def test_Node_실행기_아닌_id_는_ValueError() -> None:
-    with pytest.raises(ValueError, match="stations.list"):
-        runner.run_calc(["masshaul.cumulative", "stations.list"], {})
+    with pytest.raises(ValueError, match="ground.widen"):
+        runner.run_calc(["masshaul.cumulative", "ground.widen"], {})
 
 
 # ── 472-4 ② — 횡단 설계선 · 소단 구간 Node 길 ──────────────────────────────────
diff --git a/resources/tester/test_511_a_calc_server.py b/resources/tester/test_511_a_calc_server.py
index 3054674f7..01600c49d 100644
--- a/resources/tester/test_511_a_calc_server.py
+++ b/resources/tester/test_511_a_calc_server.py
@@ -114,8 +114,8 @@ def test_본문_상한_꼴_모르는_id(client, monkeypatch):
     assert http.post(url, content=b"{nope").status_code == 400
     assert http.post(url, json={"run": "cross.fit"}).status_code == 400
     assert http.post(url, json={"run": ["cross.fit"], "inputs": []}).status_code == 400
-    bad = http.post(url, json={"run": ["stations.list"], "inputs": {}})
-    assert bad.status_code == 400 and "stations.list" in bad.json()["message"]
+    bad = http.post(url, json={"run": ["ground.widen"], "inputs": {}})
+    assert bad.status_code == 400 and "ground.widen" in bad.json()["message"]
 
 
 def test_떠_있는_Node_답_파일_길과_같음_죽어도_다시():
diff --git a/resources/tester/test_511_b1_calc_node_stages.py b/resources/tester/test_511_b1_calc_node_stages.py
index 233e04cf5..ad619ac94 100644
--- a/resources/tester/test_511_b1_calc_node_stages.py
+++ b/resources/tester/test_511_b1_calc_node_stages.py
@@ -3,7 +3,8 @@
 못박는 것
   - 단계 id 다섯(`stage.route` · `follow` · `stations` · `profile` · `cross`) = TS 표 =
     파이썬 `STAGE_IDS` · `available`(등록부 `node:`) 밖 · 창구(`run_calc_served`)가 받음.
-  - 판 = 단계 다섯 줄(잠금 · 기본 both · 까닭 「짝 모으는 중 · B-n」) · F9 = 폼 기본값 ·
+  - 판 = 단계 줄(잠금 · 기본 both · 까닭 「짝 모으는 중 · B-n」 · stations = B-2 · route = B-5 가
+    엶) · F9 = 폼 기본값 ·
     커밋한 판 그대로.
   - 고정 자료(`fixtures/golden_472`) — Node 단계가 저장 노선 한 바퀴를 돎
     (측점 = 저장 상세 측점 0.01 m).
@@ -76,10 +77,7 @@ def test_단계_id_표_같음_등록부_밖():
 def test_판_다섯_줄_잠금_기본값_그대로():
     by_key = {g["key"]: g for g in calc_sites.GROUPS}
     expected = {
-        "route": (["R1", "R3"], "pair_B5"),
         "follow": (["P5", "P6", "F1", "F2"], "pair_B5"),
-        "stations": (["R5", "R6", "R7", "F3"], "pair_B2"),
-        "profile": (["P1", "P2", "P3", "P4", "P8"], "pair_B3"),
     }
     for key, (nos, why) in expected.items():
         group = by_key[key]
@@ -96,6 +94,9 @@ def test_판_다섯_줄_잠금_기본값_그대로():
         "corridor_mesh",
         "quantity",
         "carry",
+        "route",  # B-5 = 엶(511-B B-5)
+        "stations",  # B-2 끝 = 엶(511-B B-2)
+        "profile",  # B-3 엶(511-B · test_511_b3_profile_node)
         "cross",
         "fixed_browser",
     }
@@ -107,7 +108,7 @@ def test_판_다섯_줄_잠금_기본값_그대로():
     ).stdout
     assert calc_sites.PATH.read_bytes().replace(b"\r\n", b"\n") == committed.replace(b"\r\n", b"\n")
     locale = (ROOT / "ui_template" / "ui_template_locale_m1.ts").read_text(encoding="utf-8")
-    for n in (2, 3, 4, 5):
+    for n in (4, 5):
         assert f'B01_CalcSites_Why_pair_B{n}: ["짝 모으는 중 · B-{n}"' in locale
 
 
diff --git a/resources/tester/test_511_b2_stations_node.py b/resources/tester/test_511_b2_stations_node.py
new file mode 100644
index 000000000..7d461361a
--- /dev/null
+++ b/resources/tester/test_511_b2_stations_node.py
@@ -0,0 +1,321 @@
+"""PLAN 511-B B-2 (요구 320-4) — 서버 측점 생성 = 화면과 같은 TS(Node `stations.sections`).
+
+못박는 것
+  - 고정 자료(`fixtures/golden_472`) 노선 · 관 · 구조물 · 추가 측점 — `build_sections`
+    Node 길 = 파이썬 `generate_sections` 길 0 차(칸 · 차례 · 값 · 측점 열쇠 `key` 만 더함) —
+    곡선표 있음 · 없음 · 스냅 10 m · 측점 간격 10 m · 끝 측점 뺌.
+  - DTM 아닌 지표면 = 파이썬 길(Node 안 부름 · 열쇠 없음).
+  - 열쇠 = Node `stations.list`(화면 묶음 stations 단계 `buildStations`) 열쇠.
+  - 창구(`/calc`)는 `stations.sections`(서버 파일 경로 입력)를 안 받음.
+  - 등록부 R5 · R6 · R7 = node:stations.list · G4 = node:stations.sections(472-4 until 없음).
+  - 공유 DB · 실제 storage 안 씀(고정 자료 사본).
+
+    ./venv/Scripts/python.exe -m pytest resources/tester/test_511_b2_stations_node.py -q
+"""
+
+from __future__ import annotations
+
+import sys
+from dataclasses import replace
+from pathlib import Path
+
+import numpy as np
+import pytest
+
+HERE = Path(__file__).resolve().parent
+ROOT = HERE.parents[1]
+for path in (ROOT, HERE):
+    if str(path) not in sys.path:
+        sys.path.insert(0, str(path))
+
+import helper_472_1_paths as paths  # noqa: E402
+
+from B05_Profile import B05_Profile_Engine_Sections as sections  # noqa: E402
+from B05_Profile import B05_Profile_Engine_Sections_Node as node  # noqa: E402
+from B05_Profile.B05_Profile_Engine_Sections_Core import SectionGenerationOptions  # noqa: E402
+from common_util import common_util_calc_runner as runner  # noqa: E402
+from common_util.common_util_surface_sampler import (  # noqa: E402
+    CallableSurfaceSampler,
+    build_surface_sampler,
+)
+
+pytestmark = pytest.mark.skipif(
+    not (ROOT / "config" / "node_modules" / "vite").is_dir(), reason="프론트엔드 의존성 미설치"
+)
+
+
+@pytest.fixture(scope="module")
+def project(tmp_path_factory):
+    root = paths.stage_project(tmp_path_factory.mktemp("b2") / "project")
+    summary = paths.read("summary.json")["longitudinal"]["data"]
+    options = SectionGenerationOptions(
+        **{k: v for k, v in summary["options"].items() if k != "extra_stations"}
+    )
+    polyline = sections._load_route_polyline(root, paths.ROUTE)
+    pipes = sections._load_pipe_points(root, polyline)
+    facilities = sections.station_facilities(root, pipes, polyline)
+    extras = sections.resolve_extra_stations(
+        root, facilities[0], structures=facilities[1], plus=facilities[2]
+    )
+    return {
+        "root": root,
+        "options": options,
+        "polyline": polyline,
+        "pipes": pipes,
+        "facilities": facilities,
+        "extras": extras,
+        "sampler": build_surface_sampler(root / "B04_PreProcess/models", *paths.SURFACE),
+        "curves": sections._load_design_curves(root),
+    }
+
+
+def _both(project, sampler=None, **change):
+    kw = {
+        "options": project["options"],
+        "grade_options": None,
+        "source_snapshot": {"filter": "classification"},
+        "crs": "EPSG:5186",
+        "design_curves": project["curves"],
+        "station_snap": sections.load_station_snap(project["root"]),
+        "station_snap_step": sections.load_station_snap_step(project["root"]),
+        **change,
+    }
+    args = (project["polyline"], sampler or project["sampler"], project["pipes"], project["extras"])
+    python, _ = sections.build_sections(*args, **kw)
+    noded, _ = sections.build_sections(*args, facilities=project["facilities"], **kw)
+    return python, noded
+
+
+def _without_key(value):
+    if isinstance(value, dict):
+        return {k: _without_key(v) for k, v in value.items() if k != "key"}
+    if isinstance(value, list):
+        return [_without_key(v) for v in value]
+    return value
+
+
+def _first_diff(a, b, path=""):
+    """첫 다른 자리(값 · 칸 차례) — 큰 글 비교를 pytest 에 안 넘김. 수 = 같은 값(0 ↔ 0.0)."""
+    if isinstance(a, dict) and isinstance(b, dict):
+        if list(a) != list(b):
+            return f"{path}: 칸 {list(a)} != {list(b)}"
+        return next((d for k in a if (d := _first_diff(a[k], b[k], f"{path}.{k}"))), None)
+    if isinstance(a, list) and isinstance(b, list):
+        if len(a) != len(b):
+            return f"{path}: 길이 {len(a)} != {len(b)}"
+        return next(
+            (d for i, (x, y) in enumerate(zip(a, b)) if (d := _first_diff(x, y, f"{path}[{i}]"))),
+            None,
+        )
+    return None if a == b else f"{path}: {a!r} != {b!r}"
+
+
+def _same(python, noded):
+    hit = _first_diff(python, _without_key(noded))  # 칸 차례 · 자릿수까지
+    assert hit is None, hit
+    keys = [s.get("key") for s in noded["longitudinal"]["stations"]]
+    assert all(keys) and keys == [s["key"] for s in noded["cross_sections"]]
+    return keys
+
+
+@pytest.mark.parametrize(
+    "case",
+    ["as_saved", "no_curves", "snap10", "interval10", "no_endpoint"],
+)
+def test_Node_길_파이썬_길_0차(project, case):
+    change = {
+        "as_saved": {},
+        "no_curves": {"design_curves": []},
+        "snap10": {"station_snap": True, "station_snap_step": 10.0},
+        "interval10": {"options": replace(project["options"], station_interval_m=10.0)},
+        "no_endpoint": {"options": replace(project["options"], include_endpoint=False)},
+    }[case]
+    python, noded = _both(project, **change)
+    keys = _same(python, noded)
+    assert len(keys) == len(set(keys)) > 10
+    if case == "as_saved":
+        assert len(keys) == 57 and keys[0] == "end:BP" and keys[-1] == "end:EP"
+        kinds = {s["kind"] for s in python["longitudinal"]["stations"]}
+        assert {"bp", "ep", "regular", "irregular"} <= kinds
+        assert any(k.startswith("pipe:") for k in keys)
+
+
+def test_열쇠_Node_측점_목록과_같음(project):
+    _, noded = _both(project)
+    opts = project["options"]
+    stations = node.stations_input(
+        [[p[0], p[1]] for p in project["polyline"]],
+        *project["facilities"],
+        opts,
+        project["curves"],
+        sections.load_station_snap(project["root"]),
+        sections.load_station_snap_step(project["root"]),
+    )
+    listed = node.node_stations(stations)
+    assert [s["key"] for s in listed] == [s["key"] for s in noded["longitudinal"]["stations"]]
+    assert [s["chainageM"] for s in listed] == [
+        s["chainage_m"] for s in noded["longitudinal"]["stations"]
+    ]
+
+
+def test_DTM_아닌_지표면_파이썬_길(project, monkeypatch):
+    called = []
+    monkeypatch.setattr(runner, "run_calc_served", lambda *a: called.append(a))
+    flat = CallableSurfaceSampler(lambda xy: np.full(len(xy), 100.0))
+    python, noded = _both(project, sampler=flat)
+    assert called == [] and python == noded
+    assert "key" not in noded["longitudinal"]["stations"][0]
+
+
+def test_Node_못_돌림_파이썬_길(project, monkeypatch):
+    monkeypatch.setattr(runner, "run_calc_served", lambda *a: None)
+    python, noded = _both(project)
+    assert python == noded
+
+
+def test_창구는_서버_측점_생성_안_받음():
+    from fastapi import FastAPI
+    from fastapi.testclient import TestClient
+
+    from B06_Section import B06_Section_Router_Calc as calc_router
+
+    app = FastAPI()
+    app.include_router(calc_router.router)
+    http = TestClient(app)
+    url = "/api/projects/11111111-2222-3333-4444-555555555555/calc"
+    body = {"run": ["stations.sections"], "inputs": {"stations": {"grid": "C:/x"}}}
+    bad = http.post(url, json=body)
+    assert bad.status_code == 400 and "창구 밖" in bad.json()["message"]
+    assert runner.SERVER_ONLY_IDS <= runner.NODE_IDS
+
+
+def test_등록부_측점_줄_Node():
+    src = (ROOT / "A00_Common/design/logic/design_calc_registry.ts").read_text(encoding="utf-8")
+    for no, run in (
+        ("R5", "stations.list"),
+        ("R6", "stations.list"),
+        ("R7", "stations.list"),
+        ("G4", "stations.sections"),
+    ):
+        row = src.split(f'no: "{no}"')[1].split("\n  },")[0]
+        assert f'runner: "node:{run}"' in row and "until" not in row, no
+
+
+def test_이월_열쇠_Node_출력_없으면_파이썬(project):
+    from B05_Profile.B05_Profile_Route_Save_Parts import keyed_stations, station_keys
+
+    _, noded = _both(project)
+    stations = noded["longitudinal"]["stations"]
+    keyed = keyed_stations(stations)
+    pipes, structures, _ = project["facilities"]
+    assert keyed == station_keys(stations, pipes, structures, 20.0)  # 고정 자료 = 같은 열쇠
+    assert keyed_stations([{k: v for k, v in s.items() if k != "key"} for s in stations]) is None
+    assert keyed_stations([*stations, {"chainage_m": 1.0}]) is None  # 섞이면(구조물 측점 덧) 파이썬
+    route_save = (ROOT / "B05_Profile/B05_Profile_Route_Save.py").read_text(encoding="utf-8")
+    assert route_save.count("keyed_stations(") == 2
+
+
+def test_창구_측점_목록에_서버_정의_붙임(monkeypatch):
+    from fastapi import FastAPI
+    from fastapi.testclient import TestClient
+
+    from B06_Section import B06_Section_Router_Calc as calc_router
+
+    seen = []
+    monkeypatch.setattr(
+        calc_router, "run_calc_served", lambda run, inputs: seen.append(inputs) or {"results": {}}
+    )
+    app = FastAPI()
+    app.include_router(calc_router.router)
+    url = "/api/projects/11111111-2222-3333-4444-555555555555/calc"
+    body = {"run": ["stations.list"], "inputs": {"stations": {"line": [], "definition": {"x": 1}}}}
+    assert TestClient(app).post(url, json=body).status_code == 200
+    definition = seen[0]["stations"]["definition"]
+    assert definition != {"x": 1} and definition["types"]  # 브라우저가 보낸 정의 안 씀
+
+
+def test_판_stations_줄_열림_기본_both():
+    from common_util import common_util_calc_sites as calc_sites
+
+    group = next(g for g in calc_sites.GROUPS if g["key"] == "stations")
+    assert group["switchable"] and group["fixed"] is None
+    assert calc_sites.read_sites()["sites"]["stations"] == "both"
+    page = (ROOT / "A00_Common/design/design_pipeline_page.ts").read_text(encoding="utf-8")
+    assert "remote: stationsOnServer" in page
+
+
+# ── 화면 — 계산 자리 stations 「서버」 측점 = 화면 셈 측점(검증_sub3 · Playwright · 저장 안 함) ──
+
+VERIFY = "12953f5a-5ba1-42ad-a427-8ac857a58bc2"  # 검증_sub3(OWNERS.md)
+
+JS_STATIONS = r"""async () => {
+  const urls = performance.getEntriesByType('resource').map((e) => e.name);
+  const page = await import(urls.find((n) => /design_pipeline_page\.ts/.test(n)));
+  const pid = localStorage.getItem('frd_current_project_id');
+  const pipe = page.pagePipeline(pid);
+  await page.reconcilePagePipeline(pid);
+  await pipe.settled();
+  const calls = (window.__aisloCalcServer?.calls ?? []).filter((c) => c.id === 'stations.list');
+  return { stations: JSON.parse(JSON.stringify(pipe.output('stations'))),
+           calls: calls.map((c) => ({ round: c.roundMs, node: c.nodeMs, bytes: c.bytes })),
+           runs: (window.__aisloPipeline?.runs ?? []).slice(-1).map((r) => r.outcome) };
+}"""
+
+
+@pytest.fixture(scope="module")
+def screens():
+    from test_511_b1_calc_node_stages import BASE, JS_DRAFT, _UP, _started
+
+    if not BASE or _UP is None or _UP != _started(BASE.replace("5178", "8005")):
+        pytest.skip("이 폴더 서버 없음")
+    sync = pytest.importorskip("playwright.sync_api")
+    cred = json.loads((ROOT / "tmp" / "aislo_cred.json").read_text(encoding="utf-8"))
+    shots = {}
+    with sync.sync_playwright() as play:
+        chrome = play.chromium.launch(channel="msedge", headless=True)
+        try:
+            for mode in ("both", "server"):
+                context = chrome.new_context(viewport={"width": 1600, "height": 1000})
+                login = {k: cred[k] for k in ("email", "password")}
+                r = context.request.post(
+                    f"{BASE}/api/auth/login/request", data=login, timeout=60000
+                )
+                assert r.ok, f"로그인 실패 {r.status}"  # 비밀번호는 안 찍음
+                if mode == "server":  # 판은 안 고침 — 이 창이 받는 판만 stations = server
+
+                    def board(route):
+                        body = route.fetch().json()
+                        body["sites"]["stations"] = "server"
+                        route.fulfill(json=body)
+
+                    context.route("**/api/dashboard/calc-sites", board)
+                page = context.new_page()
+                page.add_init_script(
+                    f"localStorage.setItem('frd_current_project_id', '{VERIFY}');"
+                    " performance.setResourceTimingBufferSize(20000);"
+                )
+                page.goto(f"{BASE}/#/b05-profile", wait_until="domcontentloaded")
+                page.wait_for_function("() => !!window.__aisloPipeline", timeout=90000)
+                page.wait_for_timeout(9000)
+                shots[mode] = {"saved": page.evaluate(JS_STATIONS)}
+                page.evaluate(JS_DRAFT)  # 교각점 하나 옮김(세션 초안 · 창과 함께 버림)
+                page.wait_for_timeout(3000)
+                shots[mode]["draft"] = page.evaluate(JS_STATIONS)
+                context.close()
+        finally:
+            chrome.close()
+    (ROOT / "tmp" / "511b2_screens.json").write_text(json.dumps(shots), encoding="utf-8")
+    return shots
+
+
+import json  # noqa: E402
+
+
+@pytest.mark.parametrize("case", ["saved", "draft"])
+def test_화면_서버_측점_화면_셈과_같음(screens, case):
+    both, server = screens["both"][case], screens["server"][case]
+    assert both["runs"] == server["runs"] == ["done"]
+    assert len(both["stations"]) > 10
+    hit = _first_diff(both["stations"], server["stations"])
+    assert hit is None, hit
+    assert both["calls"] == [] and server["calls"]  # server 판만 서버를 부름
diff --git a/resources/tester/test_511_b3_profile_node.py b/resources/tester/test_511_b3_profile_node.py
new file mode 100644
index 000000000..630b272f4
--- /dev/null
+++ b/resources/tester/test_511_b3_profile_node.py
@@ -0,0 +1,207 @@
+# -*- coding: utf-8 -*-
+"""511-B B-3 종단 짝 모으기 — 종단 다시 셈 · 첫 계획선 · 계획고 옮김 = 서버 Node(TS 한 벌).
+
+옛 파이썬 길(`build_alignment` · `straight_pass_through` — 2~4 순위 폴백 몫으로 남음)로 지은
+정본과 새 Node 길(`rebuild_alignment_profile` · `design_ground_following_profile` 겉 →
+`profile.alignment` · `profile.base` → `alignment_record`)이 낸 정본의 **JSON 글이 같음**
+(칸 · 차례 · 실수형 · −0.0 · 반올림).
+사용자 R(측점 밖 곡선 시종점) · 측점 0.006 m 안 편집 키 · 법정 R 미달 경고 · 시종점 오프셋 포함.
+
+./venv/Scripts/python.exe -m pytest resources/tester/test_511_b3_profile_node.py -q
+"""
+
+from __future__ import annotations
+
+import copy
+import json
+import math
+import sys
+from dataclasses import replace
+from pathlib import Path
+
+import numpy as np
+import pytest
+
+ROOT = Path(__file__).resolve().parents[2]
+sys.path.insert(0, str(ROOT))
+
+from B05_Profile.B05_Profile_Engine_Grade import (  # noqa: E402
+    ground_profile,
+    legal_plan_radius_min_m,  # noqa: E402
+    resolve_grade_options,
+)
+from B05_Profile.B05_Profile_Engine_Grade_Alignment import (  # noqa: E402
+    AlignmentPolicy,
+    build_alignment,
+)
+from B05_Profile.B05_Profile_Engine_Grade_Carry import carry_edits  # noqa: E402
+from B05_Profile.B05_Profile_Engine_Grade_Node import carry_seat  # noqa: E402
+from B05_Profile.B05_Profile_Engine_Grade_Profile import (  # noqa: E402
+    design_ground_following_profile,
+    infer_station_interval,
+    rebuild_alignment_profile,
+    straight_pass_through,
+)
+
+pytestmark = pytest.mark.skipif(
+    not (ROOT / "config" / "node_modules" / "vite").is_dir(),
+    reason="프론트엔드 의존성 미설치",
+)
+
+
+def _ground(s: float, phase: float) -> float:
+    return 300.0 + 0.06 * s + 1.4 * math.sin(s / 37.0 + phase) + 0.2 * math.sin(s / 7.3)
+
+
+def _longitudinal(phase: float, length: float = 400.0) -> dict:
+    samples = [
+        {"chainage_m": float(s), "elevation_m": _ground(float(s), phase), "valid": True}
+        for s in np.arange(0.0, length + 1e-9, 1.0)
+    ]
+    marks = sorted({*np.arange(0.0, length + 1e-9, 20.0).tolist(), 133.37, 251.2, 318.06})
+    stations = [
+        {"station_id": f"s{index}", "chainage_m": float(value)} for index, value in enumerate(marks)
+    ]
+    return {"samples": samples, "stations": stations, "length_m": length, "design_profiles": []}
+
+
+def _options():
+    return resolve_grade_options("trunk", terrain_type="special", design_speed_kph=30)
+
+
+def _old_ground_following(longitudinal: dict, options, edits: dict | None) -> dict:
+    """옛 1순위 몸통(B-3 전 `design_ground_following_profile`) — 파이썬 꼭짓점 · 파이썬 선형."""
+    chainage, ground = ground_profile(longitudinal)
+    total = float(chainage[-1])
+    stations = list(longitudinal["stations"])
+    policy = AlignmentPolicy.from_config(
+        station_interval_m=infer_station_interval(stations),
+        max_grade_pct=options.max_grade_pct,
+        curve_skip_delta_pct=options.vertical_curve_skip_delta_pct,
+        paved=options.paved,
+        min_plan_radius_m=legal_plan_radius_min_m(options.design_speed_kph, options.terrain_type),
+        min_vertical_radius_m=options.min_vertical_radius_m,
+        min_curve_length_m=options.min_curve_length_m,
+    )
+    node_s = sorted(
+        {round(float(row["chainage_m"]), 3) for row in stations if 0 <= row["chainage_m"] <= total}
+    )
+    if node_s[-1] < total:
+        node_s.append(round(total, 3))
+    base_s = np.array(node_s, dtype=np.float64)
+    base_z = np.interp(base_s, chainage, ground)
+    base_z[0] += options.start_elevation_offset_m
+    base_z[-1] += options.end_elevation_offset_m
+    base_z = straight_pass_through(base_s, base_z, policy)
+    return build_alignment(
+        base_s=base_s,
+        base_z=base_z,
+        chainage=chainage,
+        ground=ground,
+        stations=stations,
+        policy=policy,
+        edits=dict(edits or {}),
+    )
+
+
+def _old_rebuild(longitudinal: dict, edits: dict | None) -> dict:
+    """옛 `rebuild_alignment_profile` 몸통 — 저장 꼭짓점 · 파이썬 선형."""
+    stored = longitudinal["profile_alignment"]
+    chainage, ground = ground_profile(longitudinal)
+    base = stored["base_pvi"]
+    criteria = (longitudinal.get("design_profiles") or [{}])[0].get("criteria") or {}
+    policy = AlignmentPolicy.from_dict(stored.get("policy") or {})
+    policy = replace(
+        policy,
+        min_vertical_radius_m=policy.min_vertical_radius_m
+        or float(criteria.get("min_vertical_radius_m") or 0.0),
+        min_curve_length_m=policy.min_curve_length_m
+        or float(criteria.get("min_curve_length_m") or 0.0),
+    )
+    return build_alignment(
+        base_s=np.array([float(n["chainage_m"]) for n in base], dtype=np.float64),
+        base_z=np.array([float(n["elevation_m"]) for n in base], dtype=np.float64),
+        chainage=chainage,
+        ground=ground,
+        stations=list(longitudinal["stations"]),
+        policy=policy,
+        edits=edits,
+    )
+
+
+def _text(value) -> str:
+    return json.dumps(value, ensure_ascii=False)
+
+
+EDITS = {
+    "station_offsets": {"60.000": 0.8, "133.370": -0.45, "251.204": 0.3, "300.000": None},
+    "curve_radii": {"100.000": 350.0, "251.200": 77.7, "60.000": 1234.5},
+}
+
+
+@pytest.mark.parametrize("phase", [0.0, 0.7, 2.1])
+def test_첫_계획선_옛_파이썬과_정본_글_같음(phase: float) -> None:
+    longitudinal = _longitudinal(phase)
+    options = _options()
+    old = _old_ground_following(longitudinal, options, None)
+    new, profile = design_ground_following_profile(longitudinal, options)
+    assert _text(new) == _text(old)
+    assert profile["samples"] == new["samples"]
+
+
+@pytest.mark.parametrize("phase", [0.0, 0.7, 2.1])
+def test_다시_셈_옛_파이썬과_정본_글_같음(phase: float) -> None:
+    longitudinal = _longitudinal(phase)
+    alignment, profile = design_ground_following_profile(longitudinal, _options())
+    longitudinal["profile_alignment"] = alignment
+    longitudinal["design_profiles"] = [profile]
+    for edits in (None, {}, copy.deepcopy(EDITS)):
+        old = _old_rebuild(longitudinal, copy.deepcopy(edits))
+        new, entry = rebuild_alignment_profile(longitudinal, copy.deepcopy(edits))
+        assert _text(new) == _text(old)
+        assert entry["summary"]["warnings"] == old["warnings"]
+    # 사용자 R 77.7 m = 측점 밖 곡선 시종점 · 법정 R 미달 경고(432)
+    assert any(abs(s["chainage_m"] * 1000 % 1) > 1e-6 for s in new["samples"])
+    assert any("종단곡선" in text for text in new["warnings"])
+
+
+def test_시종점_오프셋_첫_계획선_같음() -> None:
+    longitudinal = _longitudinal(1.3)
+    options = replace(_options(), start_elevation_offset_m=0.6, end_elevation_offset_m=-0.4)
+    old = _old_ground_following(longitudinal, options, EDITS)
+    new, _profile = design_ground_following_profile(longitudinal, options, edits=EDITS)
+    assert _text(new) == _text(old)
+
+
+def test_저장_선형_없으면_ValueError() -> None:
+    with pytest.raises(ValueError):
+        rebuild_alignment_profile(_longitudinal(0.0), {})
+
+
+def test_계획고_옮김_꼭짓점_세움_한_부름() -> None:
+    """노선 [저장] 몫 — 편집 옮김(`carryEdits`)과 꼭짓점 세움(`seatRouteMoved`)이 Node 한 부름 ·
+    편집만 부르는 겉(`carry_edits`)과 같은 편집."""
+    old_xy = [[0.0, 0.0], [200.0, 0.0], [400.0, 0.0]]
+    new_xy = [[0.0, 0.0], [200.0, 0.0], [300.0, 60.0], [420.0, 60.0]]
+    longitudinal = _longitudinal(0.4)
+    alignment, _profile = design_ground_following_profile(longitudinal, _options())
+    base = alignment["base_pvi"]
+    edits = {"station_offsets": {"60.000": 0.5, "120.000": -0.3}, "curve_radii": {"120.000": 400}}
+    stations = [row["chainage_m"] for row in longitudinal["stations"]]
+    seat = {
+        "ground_s": [row["chainage_m"] for row in alignment["samples"]],
+        "ground_z": [row["ground_elevation_m"] for row in alignment["samples"]],
+        "policy": AlignmentPolicy.from_dict(alignment["policy"]).as_dict(),
+        "base_pvi": base,
+        "born": [251.2],
+    }
+    moved, seated = carry_seat(old_xy, new_xy, base, edits, stations, 10.0, seat)
+    assert moved == carry_edits(old_xy, new_xy, base, edits, stations, 10.0)
+    assert set(moved["station_offsets"]) == {"60.000", "120.000"}
+    assert moved["curve_radii"] == {"120.000": 400.0}
+    assert all(isinstance(v, float) for v in moved["station_offsets"].values())
+    assert any(abs(node["chainage_m"] - 251.2) < 1e-6 for node in seated)
+    assert carry_edits(old_xy, new_xy, [], edits, stations, 10.0) == {
+        "station_offsets": {},
+        "curve_radii": {},
+    }
diff --git a/resources/tester/test_511_b5_route_node.py b/resources/tester/test_511_b5_route_node.py
new file mode 100644
index 000000000..8d7b9f9c3
--- /dev/null
+++ b/resources/tester/test_511_b5_route_node.py
@@ -0,0 +1,321 @@
+"""PLAN 511-B B-5 (요구 320-4) — 노선 · 따라감 서버 몫 = 화면과 같은 TS(늘 떠 있는 Node).
+
+못박는 것
+  - 노선 저장 폴리라인 파일(선 csv · 노드 csv · 곡선표 + 편집표) — Node `route.polyline` 길 =
+    파이썬 길 바이트 같음(거울 CASES · 위반 글 딱 반 R 12.25 · 12.75 · 겹친 점 · 짧은 칸 · 고정 ·
+    고정 길이 · 알려진 차 `KNOWN_ARC` = 직각 원호 점 ±1) ·
+    검증_sub3 저장 노선(노드 · 편집표) 다시 씀 = 저장된 곡선표 · 노드 그대로.
+  - 저장 좌표 맞춤(F1) — Node `facility.follow` + fill = 파이썬 짝
+    `_fill_structure_coordinates_py`(좌표 없음 · 측점 낳음 · 낡은 좌표 · 옛 좌표 지킴 · 자리 바뀜 ·
+    site · 읽을 때 · 노선 밖).
+  - 남은 측점 계획(F3) — Node `stations.plan` = 파이썬 `plan_stations`(322-3 CASES · 묶음마다).
+  - 공유 DB 안 씀 · storage 읽기만(검증_sub3 · 없으면 건너뜀) · 쓰기는 tmp.
+
+    ./venv/Scripts/python.exe -m pytest resources/tester/test_511_b5_route_node.py -q
+"""
+
+from __future__ import annotations
+
+import json
+import sys
+from pathlib import Path
+from types import SimpleNamespace
+
+import pytest
+
+HERE = Path(__file__).resolve().parent
+ROOT = HERE.parents[1]
+for folder in (ROOT, HERE):
+    if str(folder) not in sys.path:
+        sys.path.insert(0, str(folder))
+
+from B05_Profile import B05_Profile_Route_Polyline_Write as writer  # noqa: E402
+from common_util import common_util_route_follow as follow  # noqa: E402
+
+pytestmark = pytest.mark.skipif(
+    not (ROOT / "config" / "node_modules" / "vite").is_dir(), reason="프론트엔드 의존성 미설치"
+)
+
+SUB3 = (
+    ROOT / "storage" / "1" / "3" / "12953f5a-5ba1-42ad-a427-8ac857a58bc2" / "B05_Profile" / "route"
+)
+FIXTURE = HERE / "fixtures" / "golden_472"
+NAMES = ("planned_route.csv", "planned_route_nodes.csv", "planned_route_curves.json")
+# 알려진 차(브레인 승인 · 511-B B-5) — 교각 딱 5° 배수(합성 직각)면 원호 칸 수가 libm 끝자리로 갈림
+# (파이썬 89.99999999999992° → 17 칸 · Node 90.0° → 18 칸) · 원호 점 ±1 · 실데이터 저장 노선 0 차
+KNOWN_ARC = {
+    "직각 한 번 · R 자동",
+    "R 못박음 30m",
+    "R 이 접선 자리보다 커서 눌림",
+    "겹친 점(0.3m) 섞임 — 서버와 같이 버려야 함",
+    "딱 반 R(위반 글 짝수 쪽)",
+}
+
+
+def _files(folder: Path, monkeypatch, node: bool, args: dict) -> tuple[dict, dict]:
+    folder.mkdir(parents=True, exist_ok=True)
+    with monkeypatch.context() as patch:
+        if not node:
+            patch.setattr(writer, "node_polyline", lambda *a: None)
+        else:  # Node 못 돌리면 파이썬으로 새는 것을 막음
+            made = writer.node_polyline
+            patch.setattr(writer, "node_polyline", lambda *a: made(*a) or pytest.fail("Node 없음"))
+        summary = writer._write_planned_polyline(folder / NAMES[0], simplify=False, **args)
+    return summary, {name: (folder / name).read_bytes() for name in NAMES}
+
+
+def _cases() -> list[tuple[str, dict]]:
+    import test_route_polyline_browser_mirror as mirror
+
+    out = [
+        (
+            name,
+            {
+                "points": points,
+                "radius_m": mirror.MIN_RADIUS_M,
+                "curve_flags": flags,
+                "radii": radii,
+            },
+        )
+        for name, points, flags, radii in mirror.CASES
+    ]
+    corner = [(0.0, 0.0), (100.0, 0.0), (100.0, 100.0), (200.0, 100.0)]
+    out += [
+        (
+            "딱 반 R(위반 글 짝수 쪽)",
+            {
+                "points": corner,
+                "radius_m": 15.0,
+                "curve_flags": [True] * 4,
+                "radii": [None, 12.25, 12.75, None],
+            },
+        ),
+        (
+            "겹친 점 · 짧은 칸 · 고정 · 고정 길이",
+            {
+                "points": [(0.0, 0.0), (80.0, 0.0), (80.3, 0.1), (120.0, 60.0), (200.0, 60.0)],
+                "radius_m": 12.0,
+                "curve_flags": [True, True, True, False],
+                "radii": [None, 30.0],
+                "locks": [None, "radius", "arc", "bad", None],
+                "arcs": [None, None, 20.5, None],
+            },
+        ),
+        (
+            "점 둘",
+            {
+                "points": [(0.0, 0.0), (10.0, 0.0)],
+                "radius_m": 12.0,
+                "curve_flags": [True, True],
+                "radii": [None, None],
+            },
+        ),
+    ]
+    return out
+
+
+@pytest.mark.parametrize("name,args", _cases(), ids=[name for name, _ in _cases()])
+def test_노선_폴리라인_Node_파이썬_바이트_같음(tmp_path, monkeypatch, name, args):
+    (py_sum, py), (node_sum, node) = (
+        _files(tmp_path / mode, monkeypatch, mode == "node", args) for mode in ("py", "node")
+    )
+    if name in KNOWN_ARC and node[NAMES[0]] != py[NAMES[0]]:
+        # 알려진 차 — 선 csv 원호 점 수만 ±1 · 노드 · 곡선표 · 편집표는 같음
+        assert abs(node_sum["vertices"] - py_sum["vertices"]) == 1, name
+        node, py = ({k: v for k, v in f.items() if k != NAMES[0]} for f in (node, py))
+        node_sum, py_sum = ({**s, "vertices": 0} for s in (node_sum, py_sum))
+    assert (node_sum, node) == (py_sum, py), name
+
+
+def test_딱_반_R_위반_글은_파이썬_꼴(tmp_path, monkeypatch):
+    args = dict(_cases())["딱 반 R(위반 글 짝수 쪽)"]
+    _, files = _files(tmp_path, monkeypatch, True, args)
+    text = files[NAMES[2]].decode("utf-8")
+    assert "최소곡선반지름 미달(12.2 < 15.0m)" in text and "(12.8 < 15.0m)" in text
+
+
+@pytest.mark.skipif(not (SUB3 / "planned_route_nodes.csv").is_file(), reason="검증_sub3 노선 없음")
+def test_검증_sub3_저장_노선_다시_씀_같음(tmp_path, monkeypatch):
+    from common_util.common_util_route_geometry import read_planned_route_csv
+
+    table = json.loads((SUB3 / NAMES[2]).read_text(encoding="utf-8"))
+    nodes = [(v.x, v.y) for v in read_planned_route_csv(SUB3 / NAMES[1]).vertices]
+    edits = table["edits"]
+    args = {
+        "points": nodes,
+        "radius_m": table["min_radius_m"],
+        "curve_flags": [e["curve"] for e in edits],
+        "radii": [e["radius_m"] for e in edits],
+        "locks": [e["lock"] for e in edits],
+        "arcs": [e["arc_m"] for e in edits],
+        "station_snap": table.get("station_snap"),
+        "station_snap_step": table.get("station_snap_step"),
+    }
+    py = _files(tmp_path / "py", monkeypatch, False, args)
+    node = _files(tmp_path / "node", monkeypatch, True, args)
+    assert node == py
+    again = json.loads(node[1][NAMES[2]])
+    assert again["curves"] == table["curves"] and again["edits"] == edits
+    assert node[1][NAMES[1]] == (SUB3 / NAMES[1]).read_bytes()
+
+
+def _line() -> list[list[float]]:
+    plan = json.loads((FIXTURE / "plan.json").read_text(encoding="utf-8"))
+    return plan["planned"]
+
+
+def _items(line: list[list[float]]) -> tuple[list[SimpleNamespace], dict]:
+    on = follow.LineString(line)
+
+    def at(m: float) -> tuple[float, float]:
+        p = on.interpolate(m)
+        return round(p.x, 4), round(p.y, 4)
+
+    def s(sid, chainage, x=None, y=None, placement="point", **span):
+        return SimpleNamespace(
+            structure_id=sid,
+            placement=placement,
+            chainage_m=chainage,
+            start_m=span.get("start_m"),
+            end_m=span.get("end_m"),
+            x=x,
+            y=y,
+        )
+
+    hold = at(150.0)
+    items = [
+        s("bare", 120.0),
+        s("holds", 150.0, *hold),
+        s("stale", 210.0, *at(180.0)),
+        s("kept", 260.0, 1.0, 2.0),
+        s("moved", 300.0, 3.0, 4.0),
+        s("site", 340.0, *at(341.3), placement="site"),
+        s("span", 380.0, start_m=370.0, end_m=395.0),
+        s("none", None, 5.0, 6.0),
+        s("beyond", 99999.0),
+        s("prev-bare", 420.0),
+    ]
+    previous = {
+        "kept": s("kept", 260.0, 208000.5, 367800.25),
+        "moved": s("moved", 290.0, 9.0, 9.0),
+        "prev-bare": s("prev-bare", 420.0, 7.0, 8.0),
+    }
+    return items, previous
+
+
+@pytest.mark.parametrize("only_missing", [False, True])
+def test_좌표_맞춤_Node_파이썬_같음(only_missing):
+    line = _line()
+    results = []
+    for fill in (follow.fill_structure_coordinates, follow._fill_structure_coordinates_py):
+        items, previous = _items(line)
+        count = fill(items, line, previous=previous, only_missing=only_missing)
+        results.append((count, [(item.x, item.y) for item in items]))
+    assert results[0] == results[1]
+    assert results[0][0] > 0
+
+
+def test_좌표_맞춤_Node_길이_실제로_탐(monkeypatch):
+    called = []
+    real = follow.run_calc
+    monkeypatch.setattr(follow, "run_calc", lambda *a: called.append(a[0]) or real(*a))
+    items, previous = _items(_line())
+    follow.fill_structure_coordinates(items, _line(), previous=previous)
+    assert called == [["facility.follow"]]
+
+
+def test_측점_계획_Node_파이썬_같음():
+    import test_322_3_plan_mirror as plan_mirror
+
+    from B05_Profile.B05_Profile_Engine_Sections_Node import node_plan_stations
+    from B05_Profile.B05_Profile_Structures_Schema import StructureInstance
+    from common_util.common_util_drainage_pipes import parse_pipe_points
+    from common_util.common_util_structure_station import plan_stations
+
+    groups = [
+        (
+            parse_pipe_points(case["pipes"]),
+            [StructureInstance.model_validate(s) for s in case["structures"]],
+            list(case.get("plus", ())),
+        )
+        for case in plan_mirror.CASES.values()
+    ]
+    node = node_plan_stations(groups)
+    assert node is not None
+    assert node == [plan_stations(*group) for group in groups]
+
+
+# ── 화면 — 계산 자리 route 「서버」 노선 = 화면 셈 노선(검증_sub3 · Playwright · 저장 안 함) ──
+
+VERIFY = "12953f5a-5ba1-42ad-a427-8ac857a58bc2"  # 검증_sub3(OWNERS.md)
+
+JS_ROUTE = r"""async () => {
+  const urls = performance.getEntriesByType('resource').map((e) => e.name);
+  const page = await import(urls.find((n) => /design_pipeline_page\.ts/.test(n)));
+  const pid = localStorage.getItem('frd_current_project_id');
+  const pipe = page.pagePipeline(pid);
+  await page.reconcilePagePipeline(pid);
+  await pipe.settled();
+  const calls = (window.__aisloCalcServer?.calls ?? []).filter((c) => c.id === 'route.polyline');
+  const plain = (v) => JSON.parse(JSON.stringify(v ?? null));
+  return { route: plain(pipe.output('route')), stations: plain(pipe.output('stations')),
+           calls: calls.map((c) => ({ round: c.roundMs, node: c.nodeMs, same: c.same })),
+           runs: (window.__aisloPipeline?.runs ?? []).slice(-1).map((r) => r.outcome) };
+}"""
+
+
+@pytest.fixture(scope="module")
+def screens():
+    from test_511_b1_calc_node_stages import _UP, BASE, JS_DRAFT, _started
+
+    if not BASE or _UP is None or _UP != _started(BASE.replace("5178", "8005")):
+        pytest.skip("이 폴더 서버 없음")
+    sync = pytest.importorskip("playwright.sync_api")
+    cred = json.loads((ROOT / "tmp" / "aislo_cred.json").read_text(encoding="utf-8"))
+    shots = {}
+    with sync.sync_playwright() as play:
+        chrome = play.chromium.launch(channel="msedge", headless=True)
+        try:
+            for mode in ("both", "server"):
+                context = chrome.new_context(viewport={"width": 1600, "height": 1000})
+                login = {k: cred[k] for k in ("email", "password")}
+                r = context.request.post(
+                    f"{BASE}/api/auth/login/request", data=login, timeout=60000
+                )
+                assert r.ok, f"로그인 실패 {r.status}"  # 비밀번호는 안 찍음
+                if mode == "server":  # 판은 안 고침 — 이 창이 받는 판만 route = server
+
+                    def board(route):
+                        body = route.fetch().json()
+                        body["sites"]["route"] = "server"
+                        route.fulfill(json=body)
+
+                    context.route("**/api/dashboard/calc-sites", board)
+                page = context.new_page()
+                page.add_init_script(
+                    f"localStorage.setItem('frd_current_project_id', '{VERIFY}');"
+                    " performance.setResourceTimingBufferSize(20000);"
+                )
+                page.goto(f"{BASE}/#/b05-profile", wait_until="domcontentloaded")
+                page.wait_for_function("() => !!window.__aisloPipeline", timeout=90000)
+                page.wait_for_timeout(9000)
+                shots[mode] = {"saved": page.evaluate(JS_ROUTE)}
+                page.evaluate(JS_DRAFT)  # 교각점 하나 옮김(세션 초안 · 창과 함께 버림)
+                page.wait_for_timeout(3000)
+                shots[mode]["draft"] = page.evaluate(JS_ROUTE)
+                context.close()
+        finally:
+            chrome.close()
+    (ROOT / "tmp" / "511b5_screens.json").write_text(json.dumps(shots), encoding="utf-8")
+    return shots
+
+
+@pytest.mark.parametrize("case", ["saved", "draft"])
+def test_화면_서버_노선_화면_셈과_같음(screens, case):
+    both, server = screens["both"][case], screens["server"][case]
+    assert both["runs"] == server["runs"] == ["done"]
+    assert len(both["route"]["line"]) > 10
+    assert both["route"] == server["route"] and both["stations"] == server["stations"]
+    assert both["calls"] == []
+    # 저장 노선(초안 없음) = 서버 안 부름 · 초안 = server 판만 서버 노선
+    assert bool(server["calls"]) is (case == "draft")
diff --git a/resources/tester/test_511_b_calc_path_guard.py b/resources/tester/test_511_b_calc_path_guard.py
new file mode 100644
index 000000000..d4658e56a
--- /dev/null
+++ b/resources/tester/test_511_b_calc_path_guard.py
@@ -0,0 +1,157 @@
+"""PLAN 511-B (요구 320-4) — 계산 창구 `/calc` 가 브라우저 파일 경로를 안 씀.
+
+못박는 것
+  - 단계 격자 경로 칸(`stages.grid.path`) · 측점 격자 칸(`stations.grid`) = 400 · Node 안 부름.
+  - 격자 = `{model_id, smooth, design}` → 서버가 그 프로젝트 storage 안 DTM 격자 경로로 갈음.
+  - `dtm_grid_npz` — 다른 프로젝트 모델 · storage 밖 상대 경로(../) · 절대 경로 = LookupError.
+  - 공유 DB 안 씀(가짜 풀 · 가짜 연결) · 실제 storage 안 씀(tmp_path).
+
+    ./venv/Scripts/python.exe -m pytest resources/tester/test_511_b_calc_path_guard.py -q
+"""
+
+from __future__ import annotations
+
+import asyncio
+import sys
+from pathlib import Path
+
+import pytest
+from fastapi import Depends, FastAPI
+from fastapi.testclient import TestClient
+
+ROOT = Path(__file__).resolve().parents[2]
+if str(ROOT) not in sys.path:
+    sys.path.insert(0, str(ROOT))
+
+from B05_Profile import B05_Profile_Router_Terrain as terrain  # noqa: E402
+from B06_Section import B06_Section_Router_Calc as calc_router  # noqa: E402
+from common_util import common_util_auth as auth  # noqa: E402
+from common_util import common_util_surface_sampler as sampler  # noqa: E402
+
+PROJECT = "11111111-2222-3333-4444-555555555555"
+OTHER = "99999999-2222-3333-4444-555555555555"
+
+
+class _Cursor:
+    rows: dict = {}
+
+    async def execute(self, sql, args=None):
+        self.args = args
+
+    async def fetchone(self):
+        if self.args == (PROJECT,):
+            return (1,)  # 권한 — 회사 1
+        return self.rows.get(self.args)
+
+    async def __aenter__(self):
+        return self
+
+    async def __aexit__(self, *exc):
+        return False
+
+
+class _Conn(_Cursor):
+    def cursor(self):
+        return _Cursor()
+
+    async def __aenter__(self):
+        return self
+
+
+class _Pool:
+    def acquire(self):
+        return _Conn()
+
+
+@pytest.fixture
+def storage(tmp_path, monkeypatch):
+    """프로젝트 둘의 storage(tmp) — 모델 행 = (id, project) → (종류, 상대 경로)."""
+    roots = {PROJECT: tmp_path / "p1", OTHER: tmp_path / "p2"}
+    for root in roots.values():
+        (root / "models").mkdir(parents=True)
+    (roots[PROJECT] / "models" / "dtm_las.npz").write_bytes(b"x")
+    (roots[OTHER] / "models" / "dtm_las.npz").write_bytes(b"x")
+
+    async def stored(_conn, project_id):
+        return str(project_id)
+
+    monkeypatch.setattr(terrain, "get_project_storage_relative_path", stored)
+    monkeypatch.setattr(terrain, "resolve_stored_project_path", lambda pid: str(roots[pid]))
+    _Cursor.rows = {
+        (7, PROJECT): ("dtm", "models/dtm_las.npz"),
+        (8, OTHER): ("dtm", "models/dtm_las.npz"),
+        (9, PROJECT): ("dtm", "../p2/models/dtm_las.npz"),
+        (10, PROJECT): ("dtm", str(roots[OTHER] / "models" / "dtm_las.npz")),
+    }
+    return roots
+
+
+def _npz(model_id: int, project: str = PROJECT) -> Path:
+    from uuid import UUID
+
+    return asyncio.run(terrain.dtm_grid_npz(_Conn(), UUID(project), model_id, False))
+
+
+def test_dtm_grid_npz_storage_안만(storage):
+    assert _npz(7) == (storage[PROJECT] / "models" / "dtm_las.npz").resolve()
+    for model_id in (8, 9, 10):  # 다른 프로젝트 모델 · ../ · 절대 경로
+        with pytest.raises(LookupError):
+            _npz(model_id)
+
+
+@pytest.fixture
+def client(monkeypatch, storage):
+    monkeypatch.setattr(auth, "get_db_pool", lambda: _Pool())
+    monkeypatch.setattr(calc_router, "get_db_pool", lambda: _Pool())
+    monkeypatch.setattr(sampler, "dtm_grid_file", lambda npz: Path(npz).with_suffix(".bin"))
+    seen: list = []
+
+    def fake_run(run, inputs):
+        seen.append(inputs)
+        return {"results": {}, "ms": 0}
+
+    monkeypatch.setattr(calc_router, "run_calc_served", fake_run)
+    app = FastAPI()
+    app.include_router(
+        calc_router.router,
+        dependencies=[Depends(auth.verify_session), Depends(auth.require_project_access)],
+    )
+    app.dependency_overrides[auth.verify_session] = lambda: {
+        "role": "USER",
+        "company_id": 1,
+        "user_id": 7,
+    }
+    return TestClient(app), seen
+
+
+def _post(http, inputs, run=("stage.route",)):
+    return http.post(f"/api/projects/{PROJECT}/calc", json={"run": list(run), "inputs": inputs})
+
+
+def test_경로_칸_거절(client, storage):
+    http, seen = client
+    other = str(storage[OTHER] / "models" / "dtm_las.bin")
+    bad = [
+        {"stages": {"grid": {"path": other, "design": "las"}}},
+        {"stages": {"grid": {"path": "../../p2/models/dtm_las.bin"}}},
+        {"stages": {"grid": {"model_id": 7, "path": other}}},
+        {"stages": {"grid": "C:/Windows/win.ini"}},
+        {"stages": {"grid": {"model_id": "7"}}},
+        {"stages": {"grid": {"model_id": 7, "design": "../x"}}},
+        {"stations": {"grid": other, "line": []}},
+    ]
+    for inputs in bad:
+        res = _post(http, inputs, ("stations.list",) if "stations" in inputs else ("stage.route",))
+        assert res.status_code == 400, inputs
+    for model_id in (8, 9, 10):  # 다른 프로젝트 · ../ · 절대 경로 모델 = 거절
+        assert _post(http, {"stages": {"grid": {"model_id": model_id}}}).status_code == 400
+    assert seen == []  # Node 안 부름
+
+
+def test_격자_서버가_정함(client, storage):
+    http, seen = client
+    res = _post(http, {"stages": {"grid": {"model_id": 7, "smooth": False, "design": "sheet"}}})
+    assert res.status_code == 200, res.text
+    want = (storage[PROJECT] / "models" / "dtm_las.bin").resolve()
+    assert seen[-1]["stages"]["grid"] == {"path": str(want), "design": "sheet"}
+    assert _post(http, {"stages": {"grid": None}}).status_code == 200  # 격자 없음 = 그대로
diff --git a/resources/tester/test_b05_min_cover_guard.py b/resources/tester/test_b05_min_cover_guard.py
index d594affeb..786eefdb3 100644
--- a/resources/tester/test_b05_min_cover_guard.py
+++ b/resources/tester/test_b05_min_cover_guard.py
@@ -78,7 +78,10 @@ def test_source_guard_sits_on_the_single_apply_path():
     """
     # 강제 여부 = 페이지 설정 한 칸을 그 자리에서 읽음(472-5 · 보기마다 사본 없음)
     assert "const enforce = enforceMinCoverOf(projectId);" in PANEL
-    assert "if (blocksMinCover(base, alignment, candidate, enforce, minCoverTargets)) return false;" in PANEL
+    assert (
+        "if (blocksMinCover(base, alignment, candidate, enforce, minCoverTargets)) return false;"
+        in PANEL
+    )
     assert PANEL.count("blocksMinCover(") == 1  # 부르는 자리는 한 곳뿐.
     assert "export function blocksMinCover(" in GUARD
     assert "blocksMinCover" not in RENDER  # 화면 모듈에 사본이 남지 않았다.
@@ -96,9 +99,11 @@ def test_source_old_diameter_formula_removed():
     assert "minCoverTargets: () => minCoverTargets" in PANEL
 
 
-ALIGNMENT = (
-    PROJECT_ROOT / "B05_Profile" / "logic" / "B05_Profile_UI_Profile_Alignment.ts"
-).read_text(encoding="utf-8")
+# 구간 쉬프트 · R 입력 = `_Alignment_Edit.ts`(700줄 나눔 · 511-B B-3) — 두 파일을 한 글로 봄
+ALIGNMENT = "".join(
+    (PROJECT_ROOT / "B05_Profile" / "logic" / name).read_text(encoding="utf-8")
+    for name in ("B05_Profile_UI_Profile_Alignment.ts", "B05_Profile_UI_Profile_Alignment_Edit.ts")
+)
 
 
 def test_shift_moves_hinges_not_fixed_ends():
diff --git a/ui_template/ui_template_locale_m1.ts b/ui_template/ui_template_locale_m1.ts
index e30a90e35..cce74f0d4 100644
--- a/ui_template/ui_template_locale_m1.ts
+++ b/ui_template/ui_template_locale_m1.ts
@@ -115,8 +115,18 @@ export const ui_locales_m1 = {
     "끄면 잠잠 뒤 서버 셈 · F10 = 브라우저 부름 없음(판만)",
     "Off = server calc after a pause · F10 = no browser call",
   ],
-  B01_CalcSites_Why_pair_B2: ["짝 모으는 중 · B-2", "Merging pairs · B-2"],
-  B01_CalcSites_Why_pair_B3: ["짝 모으는 중 · B-3", "Merging pairs · B-3"],
+  B01_CalcSites_Why_route: [
+    "끄면 잠잠 뒤 서버 노선(같은 TS) · 노선 [저장] = 서버 Node",
+    "Off = server route after a pause (same TS) · route [Save] = server Node",
+  ],
+  B01_CalcSites_Why_stations: [
+    "끄면 잠잠 뒤 서버 측점(같은 TS) · [저장] 측점 = 서버 Node · DTM 아닌 지표면은 파이썬",
+    "Off = server stations after a pause (same TS) · [Save] stations = server Node · non-DTM surface = Python",
+  ],
+  B01_CalcSites_Why_profile: [
+    "끄면 첫 계획선 · 계획선 짓기를 서버 Node 가 셈(조작 중 왕복)",
+    "Off = server Node builds the first grade line · grade line (round trip while editing)",
+  ],
   B01_CalcSites_Why_pair_B4: ["짝 모으는 중 · B-4", "Merging pairs · B-4"],
   B01_CalcSites_Why_cross: [
     "끄면 횡단을 서버 Node 가 셈(잠잠 뒤 · 왕복) · DTM 아닌 지표면 = 브라우저",