diff --git a/M02_MasterTemplete/M02_MasterTemplete_Api_Fetch.ts b/M02_MasterTemplete/M02_MasterTemplete_Api_Fetch.ts
index d16f16a9e..455daa988 100644
--- a/M02_MasterTemplete/M02_MasterTemplete_Api_Fetch.ts
+++ b/M02_MasterTemplete/M02_MasterTemplete_Api_Fetch.ts
@@ -70,26 +70,39 @@ export const getActiveLayer = (): Layer => activeLayer;
 export const getActiveOwner = (): string | null => activeOwner;
 
 const enc = encodeURIComponent;
-/** 지금 층 길이면 `owner` 인자를 붙임 */
-const owned = (layer: Layer, path: string): string =>
-  layer === activeLayer && activeOwner && layer !== "system" && layer !== "project"
-    ? `${path}${path.includes("?") ? "&" : "?"}owner=${enc(activeOwner)}`
+/** 지금 층 길이면 `owner` 인자를 붙임 · `owner` 를 넘기면(134-3 · 사전조합 층) 그 주인만(null = 자기 층) */
+const owned = (layer: Layer, path: string, owner?: string | null): string => {
+  const who = owner === undefined ? (layer === activeLayer ? activeOwner : null) : owner;
+  return who && layer !== "system" && layer !== "project"
+    ? `${path}${path.includes("?") ? "&" : "?"}owner=${enc(who)}`
     : path;
+};
 const scoped = <T>(path: string, init: RequestInit = {}): Promise<T> =>
   call<T>(owned(activeLayer, `/layers/${activeLayer}${path}`), init);
 
 const q = (projectId: string | null): string => (projectId ? `?project_id=${enc(projectId)}` : "");
 const head = (layer: Layer): string => `/layers/${layer}/templates`;
-const item = (layer: Layer, kind: Kind, name: string, projectId: string | null): string =>
-  owned(layer, `${head(layer)}/${kind}/${enc(name)}${layer === "system" ? "" : q(projectId)}`);
+const item = (
+  layer: Layer,
+  kind: Kind,
+  name: string,
+  projectId: string | null,
+  owner?: string | null,
+): string =>
+  owned(
+    layer,
+    `${head(layer)}/${kind}/${enc(name)}${layer === "system" ? "" : q(projectId)}`,
+    owner,
+  );
 
 /** 층 길은 `{층, 양식: [...]}` · 옛 시스템 길은 배열 — 둘 다 목록으로 */
 export const listTemplates = async (
   layer: Layer,
   projectId: string | null,
+  owner?: string | null,
 ): Promise<TemplateInfo[]> => {
   const got = await call<TemplateInfo[] | { 양식: TemplateInfo[] }>(
-    owned(layer, `${head(layer)}${layer === "system" ? "" : q(projectId)}`),
+    owned(layer, `${head(layer)}${layer === "system" ? "" : q(projectId)}`, owner),
   );
   return Array.isArray(got) ? got : got.양식;
 };
@@ -99,7 +112,8 @@ export const readTemplate = (
   kind: Kind,
   name: string,
   projectId: string | null,
-): Promise<TemplateDoc> => call(item(layer, kind, name, projectId));
+  owner?: string | null,
+): Promise<TemplateDoc> => call(item(layer, kind, name, projectId, owner));
 
 export const saveTemplate = (
   layer: Layer,
@@ -108,8 +122,12 @@ export const saveTemplate = (
   projectId: string | null,
   판: string,
   문서: unknown,
+  owner?: string | null,
 ): Promise<TemplateInfo> =>
-  call(item(layer, kind, name, projectId), { method: "PUT", body: JSON.stringify({ 판, 문서 }) });
+  call(item(layer, kind, name, projectId, owner), {
+    method: "PUT",
+    body: JSON.stringify({ 판, 문서 }),
+  });
 
 /** 시스템 층만 지움 */
 export const deleteTemplate = (kind: Kind, name: string, 판: string): Promise<{ ok: boolean }> =>
@@ -121,8 +139,9 @@ export const deleteLayerTemplate = (
   kind: Kind,
   name: string,
   판: string,
+  owner?: string | null,
 ): Promise<{ ok: boolean }> =>
-  call(owned(layer, `/layers/${layer}/templates/${kind}/${enc(name)}?판=${enc(판)}`), {
+  call(owned(layer, `/layers/${layer}/templates/${kind}/${enc(name)}?판=${enc(판)}`, owner), {
     method: "DELETE",
   });
 
@@ -133,8 +152,9 @@ export const newLibrary = (
   layer: Layer,
   kind: "precombo",
   body: LibraryBody,
+  owner?: string | null,
 ): Promise<TemplateInfo> =>
-  call(owned(layer, `/layers/${layer}/library/${kind}`), {
+  call(owned(layer, `/layers/${layer}/library/${kind}`, owner), {
     method: "POST",
     body: JSON.stringify(body),
   });
diff --git a/M02_MasterTemplete/M02_MasterTemplete_Labor_Api.ts b/M02_MasterTemplete/M02_MasterTemplete_Labor_Api.ts
index a27945e4c..6f1fa2a76 100644
--- a/M02_MasterTemplete/M02_MasterTemplete_Labor_Api.ts
+++ b/M02_MasterTemplete/M02_MasterTemplete_Labor_Api.ts
@@ -218,9 +218,9 @@ export type {
   Money as LaborCost,
 } from "./M02_MasterTemplete_Labor_Calc";
 
-/** 지금 층이면 `owner` 를 붙인 층 길(`/layers/{층}/labor/{열}…`) */
-const laborAt = (layer: Layer, column: string, tail: string): string => {
-  const owner = layer === getActiveLayer() ? getActiveOwner() : null;
+/** 지금 층이면 `owner` 를 붙인 층 길(`/layers/{층}/labor/{열}…`) · `who` 를 넘기면 그 주인(134-3) */
+const laborAt = (layer: Layer, column: string, tail: string, who?: string | null): string => {
+  const owner = who !== undefined ? who : layer === getActiveLayer() ? getActiveOwner() : null;
   const q = owner && layer !== "system" && layer !== "project" ? `?owner=${enc(owner)}` : "";
   return `/layers/${layer}/labor/${enc(column)}${tail}${q}`;
 };
@@ -231,8 +231,9 @@ export const calcLabor = (
   column: string,
   doc: LaborDoc | null,
   수량?: Record<string, number>,
+  owner?: string | null,
 ): Promise<LaborCalc & { 알약: unknown[] }> =>
-  request(laborAt(layer, column, "/calc"), "POST", {
+  request(laborAt(layer, column, "/calc", owner), "POST", {
     ...(doc ? { doc } : {}),
     ...(수량 ? { 수량 } : {}),
   });
diff --git a/M02_MasterTemplete/M02_MasterTemplete_Labor_Detail.ts b/M02_MasterTemplete/M02_MasterTemplete_Labor_Detail.ts
index 946f1cb8c..878146694 100644
--- a/M02_MasterTemplete/M02_MasterTemplete_Labor_Detail.ts
+++ b/M02_MasterTemplete/M02_MasterTemplete_Labor_Detail.ts
@@ -86,6 +86,8 @@ export interface LaborDetailOptions {
   card?: boolean;
   /** 일위대가 사전조합 서고(50-3) — 사전조합 문서(`column` = 키) */
   mode?: "precombo";
+  /** 그 층 주인(134-3 · 사전조합 층 · null = 자기 층) — 없으면 페이지 층 것 */
+  owner?: string | null;
 }
 
 export interface LaborDetailHandle {
@@ -243,7 +245,13 @@ export function mountLaborDetail(
       draw();
       try {
         // 저장 안 한 칸 연결이 있으면 그 칸 값으로(없으면 서버가 저장된 면적산출을 읽음)
-        const got = await calcLabor(opt.layer, opt.column, cur, areaDirty ? given() : undefined);
+        const got = await calcLabor(
+          opt.layer,
+          opt.column,
+          cur,
+          areaDirty ? given() : undefined,
+          opt.owner,
+        );
         if (!alive || mine !== seq) return;
         calc = last = got;
         pills = new Map(
@@ -452,7 +460,12 @@ export function mountLaborDetail(
   /** 서고 탭(50-3 ④) — 참조 줄 더함(같은 참조 두 번 막음 · 위 층만은 서버도 막음) */
   const library = {
     layer: opt.layer,
-    owner: opt.layer === getActiveLayer() ? getActiveOwner() : null,
+    owner:
+      opt.owner !== undefined
+        ? opt.owner
+        : opt.layer === getActiveLayer()
+          ? getActiveOwner()
+          : null,
     pick: (ref: LaborRef, name: string) => {
       const id = lineId({ 참조: ref });
       if (cur.담은로직.some((r) => lineId(r) === id))
diff --git a/M02_MasterTemplete/M02_MasterTemplete_Labor_RefEdit.ts b/M02_MasterTemplete/M02_MasterTemplete_Labor_RefEdit.ts
index 422309fea..d8edd56ab 100644
--- a/M02_MasterTemplete/M02_MasterTemplete_Labor_RefEdit.ts
+++ b/M02_MasterTemplete/M02_MasterTemplete_Labor_RefEdit.ts
@@ -30,14 +30,14 @@ export async function openRefEdit(opt: RefEditOptions): Promise<void> {
   let doc: { 담은로직?: LaborRow[] };
   let 판: string;
   try {
-    const got = await readTemplate(layer, kind, opt.ref.키, null);
+    const got = await readTemplate(layer, kind, opt.ref.키, null, opt.ref.주인); // 134-3 — 참조 주인 그대로
     doc = got.문서 as typeof doc;
     판 = got.판 ?? "";
   } catch (error) {
     return fail(error, "Load_Failed");
   }
   const save = (body: unknown): Promise<unknown> =>
-    saveTemplate(layer, kind, opt.ref.키, null, 판, body).then(() =>
+    saveTemplate(layer, kind, opt.ref.키, null, 판, body, opt.ref.주인).then(() =>
       showToast(tc("Saved"), "success"),
     );
   const notice = opt.readOnly ? `${tc("Ref_Shared")} · ${tc("Ref_ReadOnly")}` : tc("Ref_Shared");
@@ -68,6 +68,7 @@ export async function openRefEdit(opt: RefEditOptions): Promise<void> {
         onChanged: (d) => (dirty = d && !opt.readOnly),
         goArea: null,
         mode: "precombo",
+        owner: opt.ref.주인,
       });
       const cancel = createButton({
         label: tc(opt.readOnly ? "In_Close" : "In_Cancel"),
diff --git a/M02_MasterTemplete/M02_MasterTemplete_Labor_Text.ts b/M02_MasterTemplete/M02_MasterTemplete_Labor_Text.ts
index 6ad1d8ed9..8088e75fb 100644
--- a/M02_MasterTemplete/M02_MasterTemplete_Labor_Text.ts
+++ b/M02_MasterTemplete/M02_MasterTemplete_Labor_Text.ts
@@ -141,6 +141,8 @@ const TEXT = {
   Lib_Name: ["이름", "Name"],
   // 서고 목록표(51-4)
   Lib_PrecomboAll: ["일위대가 사전조합", "Pre-combination"],
+  Lib_None: ["사전조합 없음", "No pre-combination"],
+  Lib_Unsorted: ["미분류", "Unsorted"],
   Lib_Create: ["생성", "Create"],
   Lib_Copy: ["복사", "Copy"],
   Lib_Delete: ["삭제", "Delete"],
diff --git a/M02_MasterTemplete/M02_MasterTemplete_Layer.ts b/M02_MasterTemplete/M02_MasterTemplete_Layer.ts
index 43a7b6b86..496792475 100644
--- a/M02_MasterTemplete/M02_MasterTemplete_Layer.ts
+++ b/M02_MasterTemplete/M02_MasterTemplete_Layer.ts
@@ -1,8 +1,8 @@
 /* =============================================================================
  * M02_MasterTemplete_Layer.ts
  * M02 한 화면의 뿌리 셋(마스터 · 회사 · 개인 · PLAN 27-1) — 진입 해시
- * `#/m02-master-template?open=구조물조합|옵션|도면&root=master|company|personal&owner=…&company=…`
- * (옛 `?layer=` 도 root 로 읽음) · 고칠 권한(`accessFor` — 서버 `M02_Layer_Access` 와 짝 · 27-1c) ·
+ * `#/m02-master-template?open=구조물조합|옵션|도면&root=master|company|personal&owner=…&company=…&pre=…`
+ * (옛 `?layer=` 도 root 로 읽음 · `pre` = 일위대가 사전조합 층 · 134-3) · 고칠 권한(`accessFor` — 서버 `M02_Layer_Access` 와 짝 · 27-1c) ·
  * 회사 없음 안내 · 회사용 읽기만일 때 [개인용으로 복사] 막대.
  * ========================================================================== */
 
@@ -25,9 +25,12 @@ export interface Entry {
   open: OpenTarget;
   /** 시스템 관리자가 보는 회사(PLAN 29 · 없으면 sessionStorage `aislo.adminCompany` · 자기 회사) */
   company: string | null;
+  /** 일위대가 사전조합 층(134-3 · 페이지 층과 따로) — 없으면 기본(`defaultRoot`) */
+  pre: Root | null;
 }
 
 const OPENS: OpenTarget[] = ["구조물조합", "옵션", "도면", "일위대가조합"];
+const ROOTS: Root[] = ["master", "company", "personal"];
 
 export const layerOfRoot = (root: Root): ManageLayer => (root === "master" ? "system" : root);
 
@@ -38,7 +41,8 @@ export function entryFromHash(): Entry {
   const root: Root = raw === "company" || raw === "personal" ? raw : "master";
   const open = OPENS.find((one) => one === query.get("open")) ?? "구조물조합";
   const owner = root === "master" ? null : query.get("owner") || null;
-  return { root, owner, open, company: query.get("company") || null };
+  const pre = ROOTS.find((one) => one === query.get("pre")) ?? null;
+  return { root, owner, open, company: query.get("company") || null, pre };
 }
 
 /** 진입 해시 인자 — `navigateTo(ROUTES.M02_MASTER_TEMPLATE, entryQuery(…))` */
@@ -47,8 +51,13 @@ export const entryQuery = (entry: Entry): Record<string, string> => ({
   root: entry.root,
   ...(entry.owner ? { owner: entry.owner } : {}),
   ...(entry.company ? { company: entry.company } : {}),
+  ...(entry.pre ? { pre: entry.pre } : {}),
 });
 
+/** 기본 층(134-4) — 내 개인 층이 있으면 개인 · 회사 없으면 마스터 */
+export const defaultRoot = (user: SessionUser | null): Root =>
+  ownOwner("personal", user) ? "personal" : "master";
+
 /** 볼 회사 — 시스템 관리자 = 해시 `company` · sessionStorage `aislo.adminCompany`(대시보드가 넣음) ·
  * 자기 회사 차례 · 그 밖 = 자기 회사 · 없으면 null */
 export function viewCompany(entry: Entry, user: SessionUser | null): string | null {
diff --git a/M02_MasterTemplete/M02_MasterTemplete_Library_List.ts b/M02_MasterTemplete/M02_MasterTemplete_Library_List.ts
index 6fa883238..fa4dd69c6 100644
--- a/M02_MasterTemplete/M02_MasterTemplete_Library_List.ts
+++ b/M02_MasterTemplete/M02_MasterTemplete_Library_List.ts
@@ -21,7 +21,6 @@ import "../M01_MasterData/M01_MasterData_UI_Style.css";
 import {
   deleteLayerTemplate,
   deleteTemplate,
-  getActiveOwner,
   listTemplates,
   newLibrary,
   readTemplate,
@@ -45,10 +44,14 @@ type Row = TemplateInfo & {
 
 export interface LibraryListOptions {
   layer: Layer;
+  /** 그 층 주인(134-3 · 사전조합 층 · null = 자기 층) */
+  owner: string | null;
   kind: PrecomboKind;
   canEdit: boolean;
   /** 줄 누름 · 생성 · 복사 뒤 — 그 문서 상세 */
   open: (key: string, label: string) => void;
+  /** 생성 · 복사 · 삭제 뒤 — 좌측 나무를 다시 그림 */
+  changed: () => void;
 }
 
 const SIZE = 30;
@@ -130,7 +133,9 @@ export function mountLibraryList(
 
   const load = async (): Promise<void> => {
     try {
-      rows = (await listTemplates(opt.layer, null)).filter((r) => r.종류 === opt.kind) as Row[];
+      rows = (await listTemplates(opt.layer, null, opt.owner)).filter(
+        (r) => r.종류 === opt.kind,
+      ) as Row[];
     } catch (error) {
       rows = [];
       showToast(L("M02_LoadFailed").replace("{value}", why(error)), "error");
@@ -171,10 +176,11 @@ export function mountLibraryList(
   /** 새로 — 서버가 그 층 다음 키로 씀 → 그 문서 상세 */
   const made = (key: string, label: string): void => {
     showToast(L("M02_Created"), "success");
+    opt.changed();
     opt.open(key, label);
   };
   const create = async (body: LibraryBody, label: string): Promise<void> =>
-    made((await newLibrary(opt.layer, opt.kind, body)).이름, label);
+    made((await newLibrary(opt.layer, opt.kind, body, opt.owner)).이름, label);
 
   /** 사전조합 = 이름 + 구분 · 상세구분 처음 값 = 로직 구분 목록 첫 줄(51-12 · 상세에서 바꿈) · 빈 묶음 */
   btnNew.addEventListener("click", () => {
@@ -196,14 +202,22 @@ export function mountLibraryList(
     const from = rows.find((r) => r.이름 === picked);
     if (!from) return;
     nameDialog(L("M02_CopyTitle"), `${from.제목 ?? from.이름} (2)`, async (name) => {
-      const got = await newLibrary(opt.layer, opt.kind, {
-        본뜬: { 층: opt.layer, 주인: getActiveOwner(), 키: from.이름 },
-      });
-      const doc = await readTemplate(opt.layer, opt.kind, got.이름, null);
-      await saveTemplate(opt.layer, opt.kind, got.이름, null, got.판, {
-        ...(doc.문서 as object),
-        이름: name,
-      });
+      const got = await newLibrary(
+        opt.layer,
+        opt.kind,
+        { 본뜬: { 층: opt.layer, 주인: opt.owner, 키: from.이름 } },
+        opt.owner,
+      );
+      const doc = await readTemplate(opt.layer, opt.kind, got.이름, null, opt.owner);
+      await saveTemplate(
+        opt.layer,
+        opt.kind,
+        got.이름,
+        null,
+        got.판,
+        { ...(doc.문서 as object), 이름: name },
+        opt.owner,
+      );
       made(got.이름, name);
     });
   });
@@ -216,8 +230,9 @@ export function mountLibraryList(
     if (!(await showConfirmDialog(L("M02_DeleteConfirm").replace("{value}", label)))) return;
     try {
       if (opt.layer === "system") await deleteTemplate(opt.kind, info.이름, info.판);
-      else await deleteLayerTemplate(opt.layer, opt.kind, info.이름, info.판);
+      else await deleteLayerTemplate(opt.layer, opt.kind, info.이름, info.판, opt.owner);
       showToast(L("M02_Deleted"), "success");
+      opt.changed();
       picked = null;
       await load();
     } catch (error) {
diff --git a/M02_MasterTemplete/M02_MasterTemplete_UI_Main.ts b/M02_MasterTemplete/M02_MasterTemplete_UI_Main.ts
index d98c88b00..31b05e1f4 100644
--- a/M02_MasterTemplete/M02_MasterTemplete_UI_Main.ts
+++ b/M02_MasterTemplete/M02_MasterTemplete_UI_Main.ts
@@ -46,6 +46,10 @@ export interface Selection {
   name: string;
   /** 화면 제목에 쓸 글 — 없으면 name 그대로(구조물 도면은 열 머리글) */
   label?: string;
+  /** 사전조합 층(134-3 · 페이지 층과 따로) — 서버 길에 붙일 주인(null = 자기 층) · 고칠 권한 ·
+   * 없으면 페이지 층 것 */
+  owner?: string | null;
+  canWrite?: boolean;
 }
 
 interface EditorHandle {
@@ -243,9 +247,11 @@ export function createMain(
   const empty = (text: string): void => {
     host.replaceChildren(el("p", { className: "m02-main__empty", text }));
   };
+  /** 고를 것마다 고칠 권한 — 사전조합 층은 고름에 실림(134-3) · 그 밖 페이지 층 */
+  const writable = (at: Selection): boolean => at.canWrite ?? canEdit(at.layer, isAdmin);
   const bar = (): void => {
     reload.hidden = !sel;
-    save.hidden = !sel || !canEdit(sel.layer, isAdmin);
+    save.hidden = !sel || !writable(sel);
     back.hidden = !sel || !(sel.kind in NUMBER_FIELD);
     nav.update(back.hidden ? null : sel); // 보임 조건 = 뒤로 단추와 같음
     const kind = sel && sel.kind in HELP_TITLE ? (sel.kind as keyof typeof HELP_TITLE) : null;
@@ -345,7 +351,7 @@ export function createMain(
   }
 
   async function mount(doc: unknown, at: Selection): Promise<void> {
-    const readOnly = !canEdit(at.layer, isAdmin);
+    const readOnly = !writable(at);
     host.replaceChildren();
     if (at.kind === "table") {
       const create = await findExport<(h: HTMLElement, d: unknown, o: object) => EditorHandle>(
@@ -424,7 +430,7 @@ export function createMain(
               void open({ ...at, kind: "area" });
               return true;
             },
-        ...(mode ? { mode } : {}),
+        ...(mode ? { mode, owner: at.owner ?? null } : {}),
       });
       // [저장] = 엑셀에서 고른 칸 연결(면적 문서) 먼저 · 그다음 일위대가(서버가 새 칸 값으로 계산값)
       editor = {
@@ -508,14 +514,16 @@ export function createMain(
       editor = mountLibraryList(host, slot, {
         layer: next.layer,
         kind: next.kind,
-        canEdit: canEdit(next.layer, isAdmin),
+        owner: next.owner ?? null,
+        canEdit: writable(next),
         open: (name, label) => void open({ ...next, name, label }),
+        changed: () => onSaved?.(),
       });
       return;
     }
     const stop = showLoading(host); // 0.3초 넘으면 상세 칸 안에 「불러오는 중」(PLAN 30-6)
     try {
-      const got = await readTemplate(next.layer, next.kind, next.name, next.projectId);
+      const got = await readTemplate(next.layer, next.kind, next.name, next.projectId, next.owner);
       if (mine !== seq) return;
       version = got.판 ?? "";
       loaded = got.문서;
@@ -563,7 +571,15 @@ export function createMain(
                 ...(edited as Record<string, unknown>),
               }) // + 저장 전 [보내기 취소] 연결(112-2)
             : edited;
-      const info = await saveTemplate(at.layer, at.kind, at.name, at.projectId, version, doc);
+      const info = await saveTemplate(
+        at.layer,
+        at.kind,
+        at.name,
+        at.projectId,
+        version,
+        doc,
+        at.owner,
+      );
       version = info.판;
       loaded = doc;
       dirty = false;
diff --git a/M02_MasterTemplete/M02_MasterTemplete_UI_Page.ts b/M02_MasterTemplete/M02_MasterTemplete_UI_Page.ts
index 7eebb2002..8547d25ff 100644
--- a/M02_MasterTemplete/M02_MasterTemplete_UI_Page.ts
+++ b/M02_MasterTemplete/M02_MasterTemplete_UI_Page.ts
@@ -19,6 +19,7 @@ import { fetchOwners, setActiveLayer } from "./M02_MasterTemplete_Api_Fetch";
 import {
   accessFor,
   buildReadOnlyBar,
+  defaultRoot,
   entryFromHash,
   entryQuery,
   layerOfRoot,
@@ -41,6 +42,7 @@ import {
 } from "./M02_MasterTemplete_TreePanel_Roots";
 import { canEdit, createMain, newItemButton, type Selection } from "./M02_MasterTemplete_UI_Main";
 import { buildSide } from "./M02_MasterTemplete_UI_Side";
+import { precomboList, type PrecomboScope } from "./M02_MasterTemplete_UI_Side_Precombo";
 import { buildTwoWay, pickedName } from "./M02_MasterTemplete_ItemPick";
 import "./M02_MasterTemplete_UI_Style.css";
 
@@ -173,6 +175,35 @@ export async function renderM02MasterTemplate(root: HTMLElement): Promise<Mounte
     kind: "table",
     name: STRUCTURE_TABLE,
   };
+  // 일위대가 사전조합 층(134-3) — 페이지 층(해시 root)과 따로 · 마스터 · 볼 회사 · 내 개인(사람 나무 없음) ·
+  // 못 가는 층(회사 없음) = 마스터 · 고른 층 = 주소 `pre`(페이지를 다시 세우지 않음 · replaceState)
+  const preScope = (want: Root): PrecomboScope => {
+    const at =
+      (want === "company" && !company) || (want === "personal" && !ownOwner("personal", user))
+        ? "master"
+        : want;
+    const to = layerOfRoot(at);
+    const who = at === "company" ? companyOwner(company, user) : null;
+    return { root: at, layer: to, owner: who, canWrite: accessFor(to, who, user).canWrite };
+  };
+  let pre = preScope(entry.pre ?? defaultRoot(user));
+  const setPre = (want: Root): void => {
+    pre = preScope(want);
+    entry.pre = pre.root;
+    const query = new URLSearchParams(entryQuery(entry));
+    history.replaceState(null, "", `#/${ROUTES.M02_MASTER_TEMPLATE}?${query}`);
+    void side.refreshPrecombo();
+  };
+  const preBar = (): HTMLElement =>
+    createLayerBar({
+      user,
+      active: { root: pre.root, owner: pre.owner },
+      company,
+      go: (next) => setPre(next),
+      // 켜진 단추 다시 누름 = 그 층 목록표(생성 · 복사 · 삭제)
+      reselect: () =>
+        void main.confirmLeave().then((ok) => ok && void main.open(precomboList(pre))),
+    });
   const side = buildSide({
     layer,
     isAdmin,
@@ -184,8 +215,7 @@ export async function renderM02MasterTemplate(root: HTMLElement): Promise<Mounte
       layerBar("구조물조합", tree.add, () => void main.openTable(layer)),
       peopleTree("구조물조합", tree.root),
     ],
-    // 일위대가 조합(50-3) — 같은 층 단추 · 누르면 그 층 화면에서 이 컨테이너를 펼침
-    precomboBar: [layerBar("일위대가조합", null, () => undefined)],
+    precombo: { scope: () => pre, bar: preBar },
   });
 
   const layout = el("div", { className: "ui-workflow-layout m02-master" });
diff --git a/M02_MasterTemplete/M02_MasterTemplete_UI_Side.ts b/M02_MasterTemplete/M02_MasterTemplete_UI_Side.ts
index 7ceefa0f5..f0e73ad40 100644
--- a/M02_MasterTemplete/M02_MasterTemplete_UI_Side.ts
+++ b/M02_MasterTemplete/M02_MasterTemplete_UI_Side.ts
@@ -1,7 +1,7 @@
 /* =============================================================================
  * M02_MasterTemplete_UI_Side.ts
- * 마스터 템플릿 좌측 패널 — 「구조물 조합」(층 단추 · 나무) · 「일위대가 조합」(층 단추 · 단가승격 · 사전조합 ·
- * `UI_Side_Precombo` · 50-3) · 「도면 양식」(새로 · 본떠 · 지우기).
+ * 마스터 템플릿 좌측 패널 — 「구조물 조합」(층 단추 · 나무) · 「일위대가 사전조합」(층 단추 따로 · 2단 폴더 나무 ·
+ * `UI_Side_Precombo` · 50-3 · 134-3) · 「도면 양식」(새로 · 본떠 · 지우기).
  * 서버 길은 계약 `6_계약.md`.
  * 구조물 도면 · 일위대가 · 면적산출 상세는 좌측 줄이 아니라 항목 카드 [수정]으로(PLAN 45-2).
  * 화면 이름 「구조물 조합」(PLAN 26-7a) — 파일 이름 · 양식 키 · API 길은 「구조물집계표」 그대로.
@@ -32,7 +32,11 @@ import { STRUCTURE_TABLE } from "./M02_MasterTemplete_Structure";
 import { buildOptionsSection } from "./StructOptions/M02_SO_Options";
 import { buildPracticeSection } from "./M02_MasterTemplete_Practice";
 import { canEdit, type Selection } from "./M02_MasterTemplete_UI_Main";
-import { buildPrecomboSection, PRECOMBO_TITLE } from "./M02_MasterTemplete_UI_Side_Precombo";
+import {
+  buildPrecomboSection,
+  PRECOMBO_TITLE,
+  type PrecomboOptions,
+} from "./M02_MasterTemplete_UI_Side_Precombo";
 
 const KINDS: { kind: Kind; label: () => string }[] = [
   { kind: "table", label: () => L("M02_KindTable") },
@@ -60,8 +64,8 @@ export interface SideOptions {
   showView: (label: string, node: HTMLElement) => (dirty: boolean) => void;
   /** 「구조물 조합」 줄 아래 — 층 단추 · 고른 층의 구조물 라이브러리 나무(PLAN 29-2 · 페이지가 만듦) */
   tree?: HTMLElement[];
-  /** 「일위대가 조합」 줄 아래 층 단추(50-3 · 페이지가 만듦) */
-  precomboBar?: HTMLElement[];
+  /** 「일위대가 사전조합」 층(134-3 · 페이지 층과 따로 · 층 단추는 페이지가 만듦) */
+  precombo: Pick<PrecomboOptions, "scope" | "bar">;
 }
 
 export interface SideHandle {
@@ -71,6 +75,8 @@ export interface SideHandle {
   paint: () => void;
   /** 진입 해시 `open`(PLAN 27-1d) — 그 컨테이너를 펼침(옵션은 열기까지) · 옵션 · 도면은 시스템 층에만 */
   reveal: (target: "옵션" | "도면" | "일위대가조합") => void;
+  /** 사전조합 층이 바뀜(134-3) — 그 컨테이너만 다시 그림 */
+  refreshPrecombo: () => Promise<void>;
 }
 
 /** 서버 이름 규칙과 같게 — 화면에서 먼저 막음 */
@@ -134,13 +140,12 @@ export function buildSide(opt: SideOptions): SideHandle {
   openOnExpand(summary, async () => {
     if (!isPicked("table", STRUCTURE_TABLE) && (await opt.confirmLeave())) opt.onOpen(null);
   });
-  // 일위대가 조합 서고(50-3) — 구조물 조합 바로 아래 · 층마다(마스터 · 회사 · 개인)
+  // 일위대가 사전조합 서고(50-3 · 134-3) — 구조물 조합 바로 아래 · 층은 페이지 층과 따로
   const precombo = buildPrecomboSection({
-    layer,
-    bar: opt.precomboBar ?? [],
+    ...opt.precombo,
     confirmLeave: opt.confirmLeave,
     onOpen: opt.onOpen,
-    openKind: () => (opt.getOpen()?.layer === layer ? (opt.getOpen()?.kind ?? null) : null),
+    getOpen: opt.getOpen,
   });
   const precomboSec = section(PRECOMBO_TITLE, precombo.body);
   // 구조물 옵션 정의 · 도면 양식은 시스템 층(마스터 템플릿)에만 · 정의 고쳐 씀은 시스템 관리자만 · 다른 역할은 읽기만(PLAN 48-2)
@@ -243,7 +248,7 @@ export function buildSide(opt: SideOptions): SideHandle {
     if (mine !== seq) return;
     paintList();
     paintButtons();
-    precombo.paint();
+    await precombo.refresh();
   }
 
   /* --- 시스템 층 새로 · 본떠 · 지우기(도면 양식만 — 구조물 도면은 집계표 열이 정함) --- */
@@ -331,5 +336,5 @@ export function buildSide(opt: SideOptions): SideHandle {
   };
 
   void refresh();
-  return { root, refresh, paint, reveal };
+  return { root, refresh, paint, reveal, refreshPrecombo: precombo.refresh };
 }
diff --git a/M02_MasterTemplete/M02_MasterTemplete_UI_Side_Precombo.ts b/M02_MasterTemplete/M02_MasterTemplete_UI_Side_Precombo.ts
index 20ac94507..67a77f931 100644
--- a/M02_MasterTemplete/M02_MasterTemplete_UI_Side_Precombo.ts
+++ b/M02_MasterTemplete/M02_MasterTemplete_UI_Side_Precombo.ts
@@ -1,64 +1,182 @@
 /* =============================================================================
  * M02_MasterTemplete_UI_Side_Precombo.ts
- * 좌측 「일위대가 조합」 컨테이너(50-3 ③ · 51-4) — 구조물 조합 아래 · 층 단추(페이지가 만듦) ·
- * 항목 둘 「단가산출 승격」(promote) · 「일위대가 사전조합」(precombo)만.
- * 항목 누름 = 상세 칸에 그 종류 목록표(`Library_List` · 생성 · 복사 · 삭제는 거기) ·
- * 표 줄 누름 = 편집 칸(UI_Main 종류 promote · precombo = 일위대가 상세 모드).
+ * 좌측 「일위대가 사전조합」 컨테이너(50-3 ③ · 51-4 · 134-3) — 구조물 조합 아래 · 층 단추(페이지가 만듦 ·
+ * 페이지 층과 따로 · 마스터 · 회사 · 내 개인) + 그 층 사전조합 나무(구분 › 상세구분 2단 폴더 · 빈 구분 = 미분류).
+ * 문서 누름 = 편집 칸(UI_Main 종류 precombo = 일위대가 상세 모드) · 켜진 층 단추 다시 누름 = 목록표
+ * (`Library_List` · 생성 · 복사 · 삭제는 거기) · 그 층 주인(`owner`) · 고칠 권한(`canWrite`)은 고름에 실어 보냄.
  * ========================================================================== */
 
 import { el } from "@ui/ui_template_elements";
-import type { Kind, Layer } from "./M02_MasterTemplete_Api_Fetch";
+import { createTreeRow, renderTree, type TreeNode } from "@ui/ui_template_tree";
+import { listTemplates, type Kind, type Layer } from "./M02_MasterTemplete_Api_Fetch";
+import type { Root } from "./M02_MasterTemplete_Layer";
 import { tc } from "./M02_MasterTemplete_Labor_Text";
 import type { Selection } from "./M02_MasterTemplete_UI_Main";
 
 export type PrecomboKind = Extract<Kind, "precombo">;
 
-const PARTS = [{ kind: "precombo", label: "Lib_PrecomboAll" }] as const;
-export const PRECOMBO_TITLE = "일위대가 조합";
+export const PRECOMBO_TITLE = "일위대가 사전조합";
 export const isPrecombo = (kind: Kind): kind is PrecomboKind => kind === "precombo";
 
-export interface PrecomboOptions {
+/** 사전조합 층(134-3) — 페이지 층과 따로 · `owner` null = 자기 층 */
+export interface PrecomboScope {
+  root: Root;
   layer: Layer;
-  /** 층 단추 줄(페이지가 만듦 · 누르면 그 층 화면 + 이 컨테이너 펼침) */
-  bar: HTMLElement[];
+  owner: string | null;
+  canWrite: boolean;
+}
+
+/** 그 층 목록표 고름(켜진 층 단추 다시 누름) */
+export const precomboList = (scope: PrecomboScope): Selection => ({
+  layer: scope.layer,
+  owner: scope.owner,
+  canWrite: scope.canWrite,
+  projectId: null,
+  kind: "precombo",
+  name: "",
+  label: tc("Lib_PrecomboAll"),
+});
+
+export interface PrecomboOptions {
+  scope: () => PrecomboScope;
+  /** 층 단추 줄(페이지가 만듦 · 그릴 때마다 새로 — 켜진 단추가 바뀜) */
+  bar: () => HTMLElement;
   confirmLeave: () => Promise<boolean>;
   onOpen: (sel: Selection | null) => void;
-  /** 이 층에서 지금 열린 종류(목록이든 문서든) — 항목 고름 표시 */
-  openKind: () => Kind | null;
+  getOpen: () => Selection | null;
 }
 
 export interface PrecomboHandle {
   body: HTMLElement;
+  /** 고름 표시만 */
   paint: () => void;
+  /** 층 단추 · 나무를 그 층 목록으로 다시 그림 */
+  refresh: () => Promise<void>;
+}
+
+interface Row {
+  이름: string;
+  종류: string;
+  제목?: string | null;
+  구분?: string | null;
+  상세구분?: string | null;
+}
+
+/** 줄 → 구분 › 상세구분 2단 나무(빈 구분 = 미분류 · 맨 뒤 · 빈 상세구분 = 구분 바로 아래) */
+export function groupRows(
+  rows: Row[],
+  unsorted: string,
+): { 구분: string; 상세: Map<string, Row[]> }[] {
+  const out = new Map<string, Map<string, Row[]>>();
+  for (const row of rows) {
+    const top = row.구분 || "";
+    const sub = row.구분 ? row.상세구분 || "" : "";
+    if (!out.has(top)) out.set(top, new Map());
+    const subs = out.get(top)!;
+    subs.set(sub, [...(subs.get(sub) ?? []), row]);
+  }
+  const order = (a: string, b: string): number =>
+    !a ? 1 : !b ? -1 : a.localeCompare(b, "ko-KR", { numeric: true });
+  return [...out.keys()].sort(order).map((top) => ({
+    구분: top || unsorted,
+    상세: new Map([...out.get(top)!].sort(([a], [b]) => order(a, b))),
+  }));
 }
 
 export function buildPrecomboSection(opt: PrecomboOptions): PrecomboHandle {
-  const items = PARTS.map((part) => {
-    const b = el("button", {
-      className: "m02-side__item ui-sidebar-row",
-      text: tc(part.label),
-      attrs: { type: "button", "data-precombo": part.kind },
+  const barHost = el("div");
+  const treeHost = el("div", { className: "ui-tree", attrs: { "data-precombo-tree": "" } });
+  const leaves = new Map<string, HTMLElement>();
+  const closed = new Set<string>(); // 접은 폴더 — 다시 그려도 그대로
+  let rows: Row[] = [];
+  let seq = 0;
+
+  const open = async (row: Row): Promise<void> => {
+    const at = opt.scope();
+    if (!(await opt.confirmLeave())) return;
+    opt.onOpen({
+      ...precomboList(at),
+      name: row.이름,
+      label: row.제목 ? `${row.이름} ${row.제목}` : row.이름,
     });
-    // 이름 "" = 목록표(UI_Main)
-    b.addEventListener("click", async () => {
-      if (!(await opt.confirmLeave())) return;
-      opt.onOpen({
-        layer: opt.layer,
-        projectId: null,
-        kind: part.kind,
-        name: "",
-        label: tc(part.label),
-      });
-    });
-    return b;
+  };
+  const leaf = (row: Row): TreeNode => ({
+    id: `doc:${row.이름}`,
+    label: row.제목 || row.이름,
+    tip: row.이름,
+    count: null,
+    run: () => void open(row),
   });
+  const folder = (id: string, label: string, children: TreeNode[]): TreeNode => ({
+    id,
+    label,
+    count: children.length,
+    folder: true,
+    open: !closed.has(id),
+    children,
+  });
+
+  const draw = (): void => {
+    leaves.clear();
+    if (!rows.length)
+      return void treeHost.replaceChildren(
+        el("p", { className: "m02-side__empty", text: tc("Lib_None") }),
+      );
+    const nodes = groupRows(rows, tc("Lib_Unsorted")).map((g) =>
+      folder(
+        `sub:${g.구분}`,
+        g.구분,
+        [...g.상세].flatMap(([sub, list]) =>
+          sub ? [folder(`sub:${g.구분}/${sub}`, sub, list.map(leaf))] : list.map(leaf),
+        ),
+      ),
+    );
+    treeHost.replaceChildren(
+      ...renderTree(nodes, (node, caret, depth, onClick) => {
+        const row = createTreeRow(node, caret, depth, () => {
+          onClick();
+          if (!node.children?.length) return;
+          if (row.querySelector(".ui-tree__caret")?.textContent === "▸") closed.add(node.id);
+          else closed.delete(node.id);
+        });
+        if (node.run) {
+          row.dataset.precomboKey = node.id.slice(4);
+          leaves.set(node.id.slice(4), row);
+        }
+        return row;
+      }),
+    );
+    paint();
+  };
+
+  const paint = (): void => {
+    const cur = opt.getOpen();
+    const at = opt.scope();
+    const mine =
+      cur && isPrecombo(cur.kind) && cur.layer === at.layer && (cur.owner ?? null) === at.owner;
+    for (const [key, row] of leaves) row.classList.toggle("is-active", !!mine && cur.name === key);
+  };
+
+  const refresh = async (): Promise<void> => {
+    const mine = ++seq;
+    const at = opt.scope();
+    barHost.replaceChildren(opt.bar());
+    treeHost.replaceChildren(el("p", { className: "m02-side__empty", text: tc("Loading") }));
+    let got: Row[] = [];
+    try {
+      got = (await listTemplates(at.layer, null, at.owner)).filter((r) => r.종류 === "precombo");
+    } catch {
+      got = []; // 못 받으면 빈 나무(목록표에서 까닭)
+    }
+    if (mine !== seq) return;
+    rows = got;
+    draw();
+  };
+
   const body = el("div", {
     className: "m02-side__items ui-sidebar-list",
-    children: [...opt.bar, ...items],
+    attrs: { "data-precombo": "" },
+    children: [barHost, treeHost],
   });
-  const paint = (): void => {
-    const on = opt.openKind();
-    items.forEach((b, i) => b.classList.toggle("is-active", PARTS[i].kind === on));
-  };
-  return { body, paint };
+  return { body, paint, refresh };
 }
diff --git a/resources/tester/helper_m02_precombo_scope.cjs b/resources/tester/helper_m02_precombo_scope.cjs
new file mode 100644
index 000000000..aa455bbe2
--- /dev/null
+++ b/resources/tester/helper_m02_precombo_scope.cjs
@@ -0,0 +1,52 @@
+/* M02 일위대가 사전조합 층(134-3) 헬퍼 — `M02_MasterTemplete_Api_Fetch.ts` 명시 owner 길 ·
+ * `M02_MasterTemplete_UI_Side_Precombo.ts` `groupRows`(구분 › 상세구분 2단) 를 트랜스파일해 Node 로 돌림 ·
+ * fetch 대역이 부른 주소를 모음 · stdin = {rows} · stdout = {urls, groups} JSON. */
+const fs = require("fs");
+const path = require("path");
+const ts = require(path.join(__dirname, "..", "..", "config", "node_modules", "typescript"));
+
+const ROOT = path.join(__dirname, "..", "..");
+const STUBS = { "@config/config_frontend": { API_BASE_URL: "/api" } };
+const stub = new Proxy({}, { get: (_t, k) => (k === "currentLanguageIndex" ? () => 0 : () => {}) });
+const cache = new Map();
+function loadTs(file) {
+  const full = path.resolve(file);
+  if (cache.has(full)) return cache.get(full);
+  const js = ts.transpileModule(fs.readFileSync(full, "utf8"), {
+    compilerOptions: { module: ts.ModuleKind.CommonJS, target: ts.ScriptTarget.ES2020 },
+  }).outputText;
+  const box = { exports: {} };
+  cache.set(full, box.exports);
+  const localRequire = (request) => {
+    if (STUBS[request]) return STUBS[request];
+    if (request.startsWith(".") && !request.endsWith(".css"))
+      return loadTs(`${path.resolve(path.dirname(full), request)}.ts`);
+    return stub;
+  };
+  new Function("exports", "module", "require", js)(box.exports, box, localRequire);
+  return box.exports;
+}
+
+const urls = [];
+global.fetch = async (url) => {
+  urls.push(url);
+  return { status: 200, ok: true, json: async () => ({ 양식: [] }) };
+};
+
+(async () => {
+  const input = JSON.parse(fs.readFileSync(0, "utf8"));
+  const api = loadTs(path.join(ROOT, "M02_MasterTemplete", "M02_MasterTemplete_Api_Fetch.ts"));
+  const side = loadTs(
+    path.join(ROOT, "M02_MasterTemplete", "M02_MasterTemplete_UI_Side_Precombo.ts"),
+  );
+  api.setActiveLayer("personal", "7/99"); // 페이지 = 남의 개인을 보는 중
+  await api.readTemplate("personal", "labor", "x1", null); // 페이지 층 = 그 사람
+  await api.readTemplate("personal", "precombo", "SC-000001", null, null); // 사전조합 = 내 개인
+  await api.listTemplates("company", null, "8"); // 사전조합 = 볼 회사
+  await api.saveTemplate("system", "precombo", "SC-000002", null, "v", {}, null);
+  const groups = side.groupRows(input.rows, "미분류").map((g) => ({
+    구분: g.구분,
+    상세: [...g.상세].map(([k, v]) => [k, v.map((r) => r.이름)]),
+  }));
+  process.stdout.write(JSON.stringify({ urls, groups }));
+})();
diff --git a/resources/tester/test_m02_card_shell.py b/resources/tester/test_m02_card_shell.py
index 86b732761..fbd950f94 100644
--- a/resources/tester/test_m02_card_shell.py
+++ b/resources/tester/test_m02_card_shell.py
@@ -161,7 +161,7 @@ def test_순서칸_2행_참조줄_옵션_수정():
     assert "readOnly: !edit || ref.층 !== opt.layer," in detail
     assert "closed: () => alive && recalc()," in detail
     ref = _text("M02_MasterTemplete_Labor_RefEdit.ts")
-    assert "saveTemplate(layer, kind, opt.ref.키, null, 판, body)" in ref
+    assert "saveTemplate(layer, kind, opt.ref.키, null, 판, body, opt.ref.주인)" in ref
     assert 'mode: "precombo",' in ref and "showConfirmDialog" in ref
     assert 'Labor_Edit: ["수정"' in _text("M02_MasterTemplete_Labor_Text.ts")
 
diff --git a/resources/tester/test_m02_labor_tree.py b/resources/tester/test_m02_labor_tree.py
index ff2f7bb97..c8b7aa5ce 100644
--- a/resources/tester/test_m02_labor_tree.py
+++ b/resources/tester/test_m02_labor_tree.py
@@ -57,9 +57,9 @@ def test_좌측_하위_컨테이너와_전체_항목_길_없음():
 
 def test_층_단추는_구조물_조합_한_벌():
     page = _text("M02_MasterTemplete_UI_Page.ts")
-    # 구조물 조합 줄 아래 하나 + 일위대가 조합 서고(50-3) 하나
-    assert page.count('layerBar("') == 2
-    assert 'layerBar("일위대가조합", null, () => undefined)' in page
+    # 구조물 조합 줄 아래 하나 · 일위대가 사전조합은 층 따로(134-3 · `preBar`)
+    assert page.count('layerBar("') == 1
+    assert "const preBar = (): HTMLElement =>" in page
     assert 'layerBar("구조물조합", tree.add, () => void main.openTable(layer)),' in page
 
 
diff --git a/resources/tester/test_m02_layer_screen.py b/resources/tester/test_m02_layer_screen.py
index a4e027391..a1f9b249c 100644
--- a/resources/tester/test_m02_layer_screen.py
+++ b/resources/tester/test_m02_layer_screen.py
@@ -201,7 +201,7 @@ def test_층_단추_셋_남의_회사_사람_나무():
     assert "...(opt.canEdit || canCopy ? { menu: () => menuFor(target, id) } : {})" in panel
     assert "const got = opt.canEdit && api.paste ? clipOf(clipKind) : null;" in panel
     api = _text(M02 / "M02_MasterTemplete_Api_Fetch.ts")
-    assert "owner=${enc(activeOwner)}" in api and "/owners" in api
+    assert "owner=${enc(who)}" in api and "/owners" in api  # 134-3 — 명시 owner 도 같은 자리
 
 
 def test_층_길_접두어와_고정_풀림():
@@ -215,7 +215,10 @@ def test_층_길_접두어와_고정_풀림():
     assert '"system"' not in _text(M02 / "M02_MasterTemplete_Structure.ts")
     # 열 조합 읽기(옛 Combo_Api · 39-4 D3 지움) 자리 = 열마다 일위대가 문서 — 층을 받아 부름
     labor = _text(M02 / "M02_MasterTemplete_Labor_Api.ts")
-    assert "const laborAt = (layer: Layer, column: string, tail: string): string =>" in labor
+    assert (
+        "const laborAt = (layer: Layer, column: string, tail: string, who?: string | null): string =>"
+        in labor
+    )
     side = _text(M02 / "M02_MasterTemplete_UI_Side.ts")
     assert "const layer = opt.layer;" in side
     assert 'layer === "system"' in side  # 도면 양식은 시스템 층에만
diff --git a/resources/tester/test_m02_precombo_scope.py b/resources/tester/test_m02_precombo_scope.py
new file mode 100644
index 000000000..11a893db8
--- /dev/null
+++ b/resources/tester/test_m02_precombo_scope.py
@@ -0,0 +1,87 @@
+"""일위대가 사전조합 층 따로(PLAN 134-3) — 페이지 층과 따로 · 명시 owner · 2단 폴더 나무.
+
+- 서버 길: 명시 owner 를 넘기면 그 주인만(null = 자기 층) — 남의 개인을 보는 중에도 사전조합 길에 안 섞임 ·
+  안 넘기면 지금처럼 페이지 층 주인(Node · fetch 대역)
+- 나무: 구분 › 상세구분 2단 · 빈 구분 = 미분류 맨 뒤 · 빈 상세구분 = 구분 바로 아래
+- 사전조합 층 단추 = 해시를 바꿔 페이지를 다시 세우지 않음(replaceState · 그 컨테이너만 다시 그림) ·
+  구조물 조합 층 단추는 그대로 해시 이동 · 주소 `pre` 에 남음 · 고름에 owner · canWrite
+"""
+
+import json
+import os
+import subprocess
+from pathlib import Path
+
+HERE = os.path.dirname(os.path.abspath(__file__))
+M02 = Path(HERE).parents[1] / "M02_MasterTemplete"
+
+
+def _text(name: str) -> str:
+    return (M02 / name).read_text(encoding="utf-8")
+
+
+def _run(rows):
+    proc = subprocess.run(
+        ["node", os.path.join(HERE, "helper_m02_precombo_scope.cjs")],
+        input=json.dumps({"rows": rows}, ensure_ascii=False),
+        capture_output=True,
+        text=True,
+        encoding="utf-8",
+        check=True,
+    )
+    return json.loads(proc.stdout)
+
+
+def test_명시_owner_길은_페이지_층_주인과_안_섞임():
+    urls = _run([])["urls"]
+    assert urls[0] == "/api/m02/layers/personal/templates/labor/x1?owner=7%2F99"
+    assert urls[1] == "/api/m02/layers/personal/templates/precombo/SC-000001"
+    assert urls[2] == "/api/m02/layers/company/templates?owner=8"
+    assert urls[3] == "/api/m02/layers/system/templates/precombo/SC-000002"
+
+
+def test_나무는_구분_상세구분_2단_미분류는_맨_뒤():
+    rows = [
+        {"이름": "SC-000003", "종류": "precombo", "구분": "C 사면안정", "상세구분": "옹벽"},
+        {"이름": "SC-000001", "종류": "precombo", "구분": "", "상세구분": "07장"},
+        {"이름": "SC-000002", "종류": "precombo", "구분": "A 횡단배수", "상세구분": ""},
+        {"이름": "SC-000004", "종류": "precombo", "구분": "C 사면안정", "상세구분": "돌쌓기"},
+        {"이름": "SC-000005", "종류": "precombo", "구분": "A 횡단배수", "상세구분": "공통"},
+    ]
+    groups = _run(rows)["groups"]
+    assert [g["구분"] for g in groups] == ["A 횡단배수", "C 사면안정", "미분류"]
+    assert groups[0]["상세"] == [["공통", ["SC-000005"]], ["", ["SC-000002"]]]
+    assert groups[1]["상세"] == [["돌쌓기", ["SC-000004"]], ["옹벽", ["SC-000003"]]]
+    assert groups[2]["상세"] == [["", ["SC-000001"]]]  # 구분 없으면 상세구분도 안 봄
+
+
+def test_사전조합_층_단추는_페이지를_다시_안_세움():
+    page = _text("M02_MasterTemplete_UI_Page.ts")
+    pre = page.split("const setPre = (want: Root): void => {")[1].split("};")[0]
+    assert "history.replaceState(" in pre and "side.refreshPrecombo()" in pre
+    assert "navigateTo" not in pre and "setActiveLayer" not in pre  # 페이지 층 · 해시 이동 없음
+    assert "entry.pre = pre.root;" in pre  # 구조물 조합 층 이동(go) 때도 주소에 남음
+    bar = page.split("const preBar = (): HTMLElement =>")[1].split("const side = buildSide(")[0]
+    assert "go: (next) => setPre(next)," in bar and "main.open(precomboList(pre))" in bar
+    # 구조물 조합 층 단추는 그대로 해시 이동 한 벌
+    assert page.count('layerBar("') == 1
+    assert 'layerBar("구조물조합", tree.add, () => void main.openTable(layer)),' in page
+    assert "precombo: { scope: () => pre, bar: preBar }," in page
+
+
+def test_고름에_owner_권한_서고_길에_명시_owner():
+    side = _text("M02_MasterTemplete_UI_Side_Precombo.ts")
+    assert 'export const PRECOMBO_TITLE = "일위대가 사전조합";' in side
+    assert "owner: scope.owner," in side and "canWrite: scope.canWrite," in side
+    assert "listTemplates(at.layer, null, at.owner)" in side
+    main = _text("M02_MasterTemplete_UI_Main.ts")
+    assert (
+        "const writable = (at: Selection): boolean => at.canWrite ?? canEdit(at.layer, isAdmin);"
+        in main
+    )
+    assert "next.owner,\n      );" in main and "at.owner,\n      );" in main
+    assert "owner: next.owner ?? null," in main and "mode, owner: at.owner ?? null" in main
+    lib = _text("M02_MasterTemplete_Library_List.ts")
+    assert "getActiveOwner" not in lib and lib.count("opt.owner") >= 6
+    detail = _text("M02_MasterTemplete_Labor_Detail.ts")
+    assert "opt.owner !== undefined" in detail