diff --git a/M02_MasterTemplete/M02_Labor_Copy.py b/M02_MasterTemplete/M02_Labor_Copy.py
new file mode 100644
index 000000000..e5f805188
--- /dev/null
+++ b/M02_MasterTemplete/M02_Labor_Copy.py
@@ -0,0 +1,146 @@
+"""M02 일위대가 · 사전조합(SC) 로직 사본(PLAN 795-2 · 요구 655 · 656 · 요구서_655) — 서버 단독.
+
+SK 사본(`M02_Sangeun_Copy` · 795-1) 한 벌 — 문서 칸 `사본` 꼴 · 판 · 단가 · 할일 칸 `사본할일`
+(단가갱신 | 재생성) · [단가 갱신] = 자원 단가 줄만 · 자동 갱신 없음 · 지워진 M01 키 = 마지막 값.
+사본에 담는 것 = 담은로직 로직 줄 · 줄 덮개(`M02_Labor_Patch`) 더한줄(로직 · 요소 · 고정 이음) ·
+고정 줄 이음 · 사용자 자재(MT) 가 닿는 M01 닫힌 묶음(참조 줄 = 그 문서 제 사본).
+셈 = `M02_Labor_Doc.calc` 층 셈(whole 안 줌) 첫머리 `live` — M01 색인 위 사본 줄(`skc.Copy`) ·
+줄 덮개 = 사본 위 고친 칸(cid 열쇠 · [재생성] 뒤 다시 얹힘 · 못 얹은 칸 = 짝잃음) ·
+사전조합 1 단위 값(`Expand`) = 그 SC 사본(`combo`) ·
+프로젝트 층 · B09(단가 책 · 굳힌 참조사본) = 옛 길(795-4).
+사본 정함(`settle` · 셈 · 저장 첫머리) = 받은 사본 먼저(열 복사 · 층 복사 = 원본 사본 그대로 · 판은
+서버가 다시 셈) → 없으면 저장본(일위대가 = labor/<열> · SC = precombo/<키>) → [저장] 때 없으면 새로
+찍음 · 사본에 없는 새 줄만 지금 M01 에서 더함 · 사본 없는 옛 문서 = 셈은 옛 길.
+길(`M02_Labor_Router`) POST …/labor/{열 | SC 키}/copy/{price|regen} {doc, 수량?} →
+    {doc(사본할일), 전, 후, 바뀐자원 | 못얹은}(저장 없음).
+짝(CLAUDE.md 5장 ①) `M02_MasterTemplete_Labor_Calc.ts` = 서버 기준 값을 받아 수량 · 반영 · 합만 —
+사본은 기준 값에만 닿음(짝 안 고침 · 거울 시험 `test_795_2_sc_copy`).
+"""
+
+from __future__ import annotations
+
+import json
+import re
+from typing import Any
+
+from M02_MasterTemplete import M02_Sangeun_Copy as skc
+
+KEY, JOB, PRICE, REGEN = skc.KEY, skc.JOB, skc.PRICE, skc.REGEN
+_SC = re.compile(r"^SC-\d{6}$")
+
+
+def _project() -> bool:
+    from M02_MasterTemplete import M02_Labor_Ref as refs
+
+    return refs.here()[0] == "project"
+
+
+def stamp(doc: dict) -> dict | None:
+    """지금 M01 로 새 사본 — 닿을 것 없음(참조 줄 · 손 단가 고정 줄만) = None."""
+    lines = [x for x in doc.get("담은로직") or [] if isinstance(x, dict)]
+    keys = [str(x["로직"]) for x in lines if x.get("로직")]
+    links = [str(v) for x in lines for v in ((x.get("고정") or {}).get("이음") or {}).values() if v]
+    for x in lines:
+        more = skc.reach((x.get("패치") or {}).get("더한줄"))
+        keys, links = keys + more[0], links + more[1]
+    links += [
+        str(m["코드"]) for m in doc.get("자재") or [] if isinstance(m, dict) and m.get("코드")
+    ]
+    return skc.snap(list(dict.fromkeys(keys)), list(dict.fromkeys(links)))
+
+
+def _stored(doc: dict) -> dict | None:
+    from M02_MasterTemplete import M02_MasterTemplete_Store as store
+
+    key = str(doc.get("키") or doc.get("열") or "")
+    kind = "precombo" if _SC.match(key) else "labor"
+    try:
+        got = json.loads(store._path(kind, key).read_bytes())
+    except (OSError, ValueError, store.StoreError):
+        return None
+    return got[KEY] if skc.has(got) else None
+
+
+def settle(doc: Any, save: bool = False) -> Any:
+    """셈 · 저장 첫머리 — 서버가 정한 사본으로 갈음(할일 · 저장 때 찍음 · 새 줄 · 할일 칸 뗌)."""
+    if not isinstance(doc, dict) or _project():
+        return doc
+    job = doc.get(JOB)  # 모르는 할일 = 없음
+    out = {k: v for k, v in doc.items() if k not in (KEY, JOB)}
+    copy = skc.taken(doc.get(KEY)) or _stored(doc)
+    if job == REGEN or (copy is None and save):
+        copy = stamp(out)
+    elif job == PRICE and copy:
+        copy = skc.refresh(copy, skc.whole_())[0]
+    if save and copy:
+        copy = skc.grow(copy, stamp(out))
+    return {**out, KEY: copy} if copy else out
+
+
+def keep(raw: Any, out: dict) -> dict:
+    """정리한 문서에 사본 · 할일 칸을 실어 보냄(꼴 검사는 `settle` 몫)."""
+    if not isinstance(raw, dict):
+        return out
+    got = {k: raw[k] for k in (KEY, JOB) if raw.get(k) is not None}
+    return {**out, **got}
+
+
+def live(doc: dict) -> Any:
+    """층 셈 색인 — 사본 있는 문서 = M01 위 사본 줄 · 없거나 프로젝트 층 = 지금 M01."""
+    from M01_MasterData import M01_MasterData_Store as m01
+
+    whole = m01.loaded()[1]
+    return whole if _project() else skc.over(settle(doc), whole)
+
+
+def combo(expand: Any, doc: dict, trail: tuple[str, ...]) -> dict[str, Any]:
+    """사전조합 1 단위 값 — 그 SC 사본 색인으로(층 셈만 · 프로젝트 = 굳힌 단가 그대로)."""
+    from M02_MasterTemplete import M02_Labor_Ref as refs
+
+    was = expand.whole
+    if expand.read is refs.read_ref and skc.has(doc):
+        expand.whole = skc.over(doc, was)
+    try:
+        return expand._combo(doc, trail)
+    finally:
+        expand.whole = was
+
+
+def mark(ans: dict, doc: dict) -> dict:
+    """셈 답 덧칸 `사본` {시점, 단가시점, M01새판, 지운키, 단가새값} — 사본 없음 = 칸 없음."""
+    return skc.mark(ans, doc)
+
+
+# ── [단가 갱신] · [재생성] 미리 셈(저장 없음) ──────────────────────────
+def _money(ans: dict) -> dict:
+    return {k: ans.get(k) for k in ("기준합", "반영합")}
+
+
+def _lost(ans: dict) -> dict[str, dict]:
+    got = {}
+    for n, line in enumerate(ans.get("줄") or []):
+        for x in line.get("짝잃음") or []:
+            if isinstance(x, dict):
+                got[f"{n}|{x.get('cid')}"] = {**x, "줄": n}
+    return got
+
+
+def preview(doc: dict, job: str, given: dict | None = None) -> dict[str, Any]:
+    """{doc(할일 얹음), 전, 후, 바뀐자원 · 못얹은} — `doc` = 정리한 문서 · 재생성 ⊃ 단가갱신."""
+    from M02_MasterTemplete import M02_Labor_Doc as labor
+
+    new = REGEN if REGEN in (doc.get(JOB), job) else job
+    after_doc = {**doc, JOB: new}
+    before, after = labor.calc(doc, given), labor.calc(after_doc, given)
+    out: dict[str, Any] = {"doc": after_doc, "전": _money(before), "후": _money(after)}
+    if job == PRICE:
+        copy = skc.taken(doc.get(KEY)) or _stored(doc)
+        out["바뀐자원"] = skc.refresh(copy, skc.whole_())[1] if copy else []
+    else:
+        was = _lost(before)
+        out["못얹은"] = [
+            {"줄": x["줄"], "cid": x.get("cid"), "까닭": x.get("까닭") or "새 사본에 그 줄 없음"}
+            for c, x in _lost(after).items()
+            if c not in was
+        ]
+    return out
diff --git a/M02_MasterTemplete/M02_Labor_Doc.py b/M02_MasterTemplete/M02_Labor_Doc.py
index 0f98b6287..3a9a24006 100644
--- a/M02_MasterTemplete/M02_Labor_Doc.py
+++ b/M02_MasterTemplete/M02_Labor_Doc.py
@@ -42,7 +42,7 @@ from M01_MasterData import M01_MasterData_Store as m01
 from M01_MasterData import M01_MasterData_Store_Combo as combo_store
 from M02_MasterTemplete import M02_Labor_Fixed as fixed
 from M02_MasterTemplete import M02_Labor_Inputs as labor_inputs
-from M02_MasterTemplete import M02_Labor_Patch as patch
+from M02_MasterTemplete import M02_Labor_Copy as lc, M02_Labor_Patch as patch
 from M02_MasterTemplete import M02_Labor_Ref as refs
 from M02_MasterTemplete import M02_Labor_Spec as spec
 from M02_MasterTemplete import M02_MasterTemplete_Store as store
@@ -102,7 +102,7 @@ def clean(doc: Any) -> dict[str, Any]:
     모르는 입력 이름 · 빈 입력값은 버림 · 자재 이름 · 규격 · 단위는 M01 것."""
     if not isinstance(doc, dict):
         raise _bad("일위대가 문서가 묶음 아님")
-    whole = m01.loaded()[1]
+    whole = lc.live(doc)  # 로직 사본(795-2) — 지워진 M01 키도 사본 줄로
     lines, seen, here = [], set(), None
     for at, one in enumerate(doc.get("담은로직") or [], start=1):
         where = f"단가산출 기초 {at}째"
@@ -203,7 +203,7 @@ def clean(doc: Any) -> dict[str, Any]:
         cols = spec.clean(doc.get("규격"), {spec.line_key(x) for x in [*lines, *mats]})
     except spec.SpecError as e:
         raise _bad(str(e)) from e
-    return {**out, "규격": cols} if cols else out
+    return lc.keep(doc, {**out, "규격": cols} if cols else out)  # 사본 칸(795-2)
 
 
 def _alias(alias: Any, where: str) -> str | None:
@@ -501,7 +501,7 @@ def calc(
 
     프로젝트 사본 셈(142-1)도 이 한 벌 — `whole` = 사본 `단가.json`(`M02_Item_Prices.load_prices`) ·
     `read` = 참조 → 굳힌 `참조사본` · `pills` = 사본 `알약`(가져온 때 것). 없으면 지금 M01 · 층."""
-    whole, have = m01.loaded()[1] if whole is None else whole, _area_of(doc.get("열")) if given is None else given  # fmt: skip
+    whole, have = lc.live(doc) if whole is None else whole, _area_of(doc.get("열")) if given is None else given  # fmt: skip
     expand = refs.Expand(whole, read or refs.read_ref, have)  # 사전조합 안 줄 수량 = 알약 값(723-1)
     if pills is None:
         pills = combo_store.combo_pills({"담은로직": doc.get("담은로직") or []})["물량"]
@@ -665,7 +665,7 @@ def _json(value: Any) -> Any:
 def server(doc: Any) -> dict[str, Any]:
     """[저장] · 복사 때 서버 정본 — 정리 + 지금 면적 값으로 `계산값`(브라우저 값 버림) ·
     사용자 자재가 로직 자재 품목과 같으면 400(103-1 · 같은 품목 두 번 셈)."""
-    got = clean(doc)
+    got = lc.settle(clean(doc), True)  # 로직 사본(795-2) — 찍기 · 할일 · 새 줄
     out = calc(got)
     no_twice(got, out)
     return {**got, "계산값": {**out, **spec_sums(got, out)}}
diff --git a/M02_MasterTemplete/M02_Labor_Expand.py b/M02_MasterTemplete/M02_Labor_Expand.py
index 8a8b872f0..7be93b02a 100644
--- a/M02_MasterTemplete/M02_Labor_Expand.py
+++ b/M02_MasterTemplete/M02_Labor_Expand.py
@@ -13,6 +13,7 @@ from collections.abc import Callable
 from decimal import Decimal
 from typing import Any
 
+from M02_MasterTemplete import M02_Labor_Copy as lc
 from M02_MasterTemplete import M02_Labor_Fixed as fixed
 from M02_MasterTemplete import M02_Labor_Patch as patch
 from M02_MasterTemplete import M02_Labor_Ref as refs
@@ -68,8 +69,8 @@ class Expand:
                 self.memo[rid] = self._promote(doc)
             elif refs.kind_of(ref["키"]) == "sangeun":  # 단가산출(715-2) = 고친 줄 셈 1 단위
                 self.memo[rid] = calc.unit(doc, self.whole, self, (*trail, rid))
-            else:
-                self.memo[rid] = self._combo(doc, (*trail, rid))
+            else:  # 사전조합 = 그 SC 로직 사본(795-2)
+                self.memo[rid] = lc.combo(self, doc, (*trail, rid))
         return self.memo[rid]
 
     @staticmethod
diff --git a/M02_MasterTemplete/M02_Labor_Ref.py b/M02_MasterTemplete/M02_Labor_Ref.py
index 169bf4588..e6df8985c 100644
--- a/M02_MasterTemplete/M02_Labor_Ref.py
+++ b/M02_MasterTemplete/M02_Labor_Ref.py
@@ -214,7 +214,9 @@ def clean_doc(kind: str, doc: Any) -> dict[str, Any]:
     out["자재"] = _combo_mats(doc, out["담은로직"])
     out.update({k: str(doc.get(k) or "").strip() for k in ("구분", "상세구분")})
     out["본뜬"] = doc["본뜬"] if isinstance(doc.get("본뜬"), dict) else None
-    return out
+    from M02_MasterTemplete import M02_Labor_Copy as lc
+
+    return lc.settle(lc.keep(doc, out), True)  # 로직 사본(795-2)
 
 
 def is_rate(one: Any) -> bool:
diff --git a/M02_MasterTemplete/M02_Labor_Router.py b/M02_MasterTemplete/M02_Labor_Router.py
index 9513f0af8..5db9ebb66 100644
--- a/M02_MasterTemplete/M02_Labor_Router.py
+++ b/M02_MasterTemplete/M02_Labor_Router.py
@@ -18,6 +18,7 @@ from fastapi import APIRouter, Depends, HTTPException
 from pydantic import BaseModel
 
 from common_util.common_util_auth import verify_session
+from M02_MasterTemplete import M02_Labor_Copy as lc
 from M02_MasterTemplete import M02_Labor_Doc as labor
 from M02_MasterTemplete import M02_Labor_Ref as refs
 from M02_MasterTemplete import M02_Layer_Access as access
@@ -53,7 +54,34 @@ def _doc(column: str, sent: dict[str, Any] | None) -> dict[str, Any]:
 
 def _calc(column: str, body: CalcBody) -> dict[str, Any]:
     doc = _doc(column, body.doc)
-    return {**labor.calc(doc, body.수량), "알약": labor.pills(doc)}
+    got = lc.mark(labor.calc(doc, body.수량), lc.settle(doc))  # 사본 표지(795-2)
+    return {**got, "알약": labor.pills(doc)}
+
+
+_JOBS = {"price": lc.PRICE, "regen": lc.REGEN}
+
+
+@router.post("/layers/{layer}/labor/{column}/copy/{how}")
+def labor_copy(
+    layer: Layer,
+    column: str,
+    how: str,
+    body: CalcBody,
+    owner: str | None = None,
+    session: Session = Depends(verify_session),
+) -> dict:
+    """로직 사본(795-2) — price [단가 갱신] · regen [재생성] · 일위대가 열 · 사전조합 SC 키 ·
+    답 = 할일 얹은 doc(화면 캐시 · [저장] 때 서버가 적용) + 전 · 후 합 + 바뀐자원 | 못얹은."""
+    if how not in _JOBS:
+        raise HTTPException(status_code=404, detail="price · regen")
+    return _call(_root(session, layer, owner), _copy_job, column, body, _JOBS[how])
+
+
+def _copy_job(column: str, body: CalcBody, job: str) -> dict[str, Any]:
+    """미리 셈은 정리한 문서로 · 답 doc = 보낸 화면 문서 + 할일(SC · 일위대가 꼴 그대로)."""
+    got = lc.preview(_doc(column, body.doc), job, body.수량)
+    sent = body.doc if body.doc is not None else store.read("labor", column)["문서"]
+    return {**got, "doc": {**sent, lc.JOB: got["doc"][lc.JOB]}}
 
 
 def _pills(column: str) -> dict[str, Any]:
diff --git a/M02_MasterTemplete/M02_Library_Same.py b/M02_MasterTemplete/M02_Library_Same.py
index 006e20cc2..391039095 100644
--- a/M02_MasterTemplete/M02_Library_Same.py
+++ b/M02_MasterTemplete/M02_Library_Same.py
@@ -150,6 +150,7 @@ class Same:
             "담은로직": _sorted([self._line(x, trail, False) for x in doc.get("담은로직") or []]),
             "자재": _sorted(mats),
             "규격": norm(doc.get("규격")),
+            "사본": skc.same_part(doc),  # 로직 사본(795-2) — 지금 M01 과 다른 판만
         }
         return {k: v for k, v in body.items() if v not in EMPTY}
 
diff --git a/M02_MasterTemplete/M02_Sangeun_Copy.py b/M02_MasterTemplete/M02_Sangeun_Copy.py
index 068903f2b..0501892a5 100644
--- a/M02_MasterTemplete/M02_Sangeun_Copy.py
+++ b/M02_MasterTemplete/M02_Sangeun_Copy.py
@@ -40,7 +40,7 @@ RES = ("LB", "MT", "EQ", "MO", "FX")  # 자원 단가 = 단가 기준 시점 묶
 _MASTER = prices.mf.Master
 
 
-def _whole() -> Any:
+def whole_() -> Any:
     return prices.m01.loaded()[1]
 
 
@@ -142,17 +142,29 @@ def stamp(doc: dict) -> dict | None:
     base = doc.get("바탕") or {}
     if "참조" in base:
         return None
-    adds = doc.get("더한줄") or []
-    keys = [str(base["로직"])] if base.get("로직") else []
-    keys += [str(x["로직"]) for x in adds if x.get("종류") == "로직" and x.get("로직")]
-    links = [v for x in adds for v in ((x.get("고정") or {}).get("이음") or {}).values() if v]
+    keys, links = reach(doc.get("더한줄"))
+    keys = [str(base["로직"]), *keys] if base.get("로직") else keys
     extra = [row] if (row := imp.row_of(doc)) else []
+    return snap(keys, links, extra)
+
+
+def reach(adds: Any) -> tuple[list[str], list[str]]:
+    """더한줄이 닿는 (로직 키, 요소 키) — 로직 줄 · 인력 · 재료 · 기계 요소 · 고정 줄 이음."""
+    adds = [x for x in adds or [] if isinstance(x, dict)]
+    keys = [str(x["로직"]) for x in adds if x.get("종류") == "로직" and x.get("로직")]
+    links = [str(x["요소"]) for x in adds if x.get("종류") in sd.ADD_PART and x.get("요소")]
+    links += [str(v) for x in adds for v in ((x.get("고정") or {}).get("이음") or {}).values() if v]
+    return keys, links
+
+
+def snap(keys: list[str], links: list[str], extra: list[dict] | None = None) -> dict | None:
+    """키 · 요소 · 마스터 밖 줄이 닿는 M01 닫힌 묶음 → 사본(닿을 것 없음 = None)."""
     if not (keys or links or extra):
         return None
-    got = prices.collect(keys, [str(v) for v in links], extra)
+    got = prices.collect(keys, links, extra)
     lost = got.pop("_빠진", None)
     keys = [str(r.get("키")) for data in got.values() for r in data[prices.m01.items_key(data)]]
-    whole = _whole()  # 줄 = 셈 색인 것(파일 묶음과 같은 판)
+    whole = whole_()  # 줄 = 셈 색인 것(파일 묶음과 같은 판)
     rows = [whole.index[k[:2]][k] for k in keys if k in whole.index.get(k[:2], {})]
     out = _split(prices.to_json(rows))
     return out | ({"빠진": lost} if lost else {})
@@ -177,9 +189,8 @@ def refresh(copy: dict, whole: Any) -> tuple[dict, list[dict]]:
     return {**copy, "단가": rows, "단가판": _fp(rows), "단가시점": _now()}, changed
 
 
-def _grow(copy: dict, doc: dict) -> dict:
-    """저장 때 — 사본에 없는 키 줄만 지금 M01 에서 더함(있는 줄 = 사본 그대로)."""
-    fresh = stamp(doc)
+def grow(copy: dict, fresh: dict | None) -> dict:
+    """저장 때 — 사본에 없는 키 줄만 새 사본(`fresh` = 지금 M01)에서 더함(있는 줄 = 그대로)."""
     have = {str(r.get("키")) for r in [*copy["로직"], *(copy.get("단가") or [])]}
     new = [
         r
@@ -193,7 +204,7 @@ def _grow(copy: dict, doc: dict) -> dict:
     return {**copy, "로직": logic, "판": _fp(logic), "단가": cost, "단가판": _fp(cost)}
 
 
-def _taken(raw: Any) -> dict | None:
+def taken(raw: Any) -> dict | None:
     """받은 사본(층 복사 · 새로) — 줄 꼴만 보고 판은 서버가 다시 셈."""
     if not has({KEY: raw}):
         return None
@@ -223,13 +234,13 @@ def settle(doc: Any, save: bool = False) -> Any:
     out = {k: v for k, v in doc.items() if k not in (KEY, JOB)}
     if "참조" in (doc.get("바탕") or {}):
         return out
-    copy = _stored(doc.get("키")) or _taken(doc.get(KEY))
+    copy = _stored(doc.get("키")) or taken(doc.get(KEY))
     if job == REGEN or (copy is None and save):
         copy = stamp(out)
     elif job == PRICE and copy:
-        copy = refresh(copy, _whole())[0]
+        copy = refresh(copy, whole_())[0]
     if save and copy:
-        copy = _grow(copy, out)
+        copy = grow(copy, stamp(out))
     return {**out, KEY: copy} if copy else out
 
 
@@ -259,7 +270,7 @@ def mark(ans: dict, doc: dict) -> dict:
         return ans
     copy = doc[KEY]
     head = {"시점": copy.get("시점"), "단가시점": copy.get("단가시점")}
-    return {**ans, KEY: {**head, **state(copy, _whole())}}
+    return {**ans, KEY: {**head, **state(copy, whole_())}}
 
 
 def same_part(doc: Any) -> str | None:
@@ -267,7 +278,7 @@ def same_part(doc: Any) -> str | None:
     if not has(doc):
         return None
     copy = doc[KEY]
-    seen = state(copy, _whole())
+    seen = state(copy, whole_())
     fresh = not (seen["M01새판"] or seen["지운키"] or seen["단가새값"])
     return None if fresh else f"{copy.get('판')}:{copy.get('단가판')}"
 
@@ -296,8 +307,8 @@ def preview(doc: Any, job: str, given: dict | None = None) -> dict[str, Any]:
     after = calc.calc_doc(after_doc, given, False)
     out: dict[str, Any] = {"문서": after_doc, "전": _money(before), "후": _money(after)}
     if job == PRICE:
-        copy = _stored(doc.get("키")) or _taken(doc.get(KEY))
-        out["바뀐자원"] = refresh(copy, _whole())[1] if copy else []
+        copy = _stored(doc.get("키")) or taken(doc.get(KEY))
+        out["바뀐자원"] = refresh(copy, whole_())[1] if copy else []
     else:
         was = _lost(before)
         out["못얹은"] = [
diff --git a/resources/tester/test_795_2_sc_copy.py b/resources/tester/test_795_2_sc_copy.py
new file mode 100644
index 000000000..09c544ad4
--- /dev/null
+++ b/resources/tester/test_795_2_sc_copy.py
@@ -0,0 +1,186 @@
+# ruff: noqa: F811 — 임시 층 fixture(world)를 test_m02_labor_ref 에서 받아 씀
+"""795-2 일위대가 · 사전조합(SC) 로직 사본 — 임시 storage · M01 은 메모리 덮개(정본 안 고침).
+
+① 저장 때 사본 · M01 로직 바꿔도 일위대가 · SC 금액 그대로 · 배지 ② 노임 바꿔도 [단가 갱신] 전엔
+그대로 · 누르면 따라감 ③ [재생성] 뒤 줄 덮개 다시 얹힘 · 못 얹은 칸 알림 ④ 층 복사 · 열 복사 =
+사본 그대로 ⑤ TS 짝(Labor_Calc.ts settle) 같은 금액 ⑥ 사본 없는 옛 문서 = 옛 길.
+"""
+
+from __future__ import annotations
+
+import copy
+import json
+
+import pytest
+
+from M01_MasterData import M01_MasterData_Store as m01
+from M02_MasterTemplete import M02_Labor_Copy as lc
+from M02_MasterTemplete import M02_Labor_Doc as labor
+from M02_MasterTemplete import M02_Labor_Ref as refs
+from M02_MasterTemplete import M02_MasterTemplete_Store as store
+from M02_MasterTemplete import M02_Sangeun_Copy as skc
+from resources.tester.test_795_1_sk_copy import _changed, _fake, _live
+from resources.tester.test_m02_labor_calc_mirror import _same, _ts
+from resources.tester.test_m02_labor_ref import world  # noqa: F401 — 같은 임시 층
+
+PCT = "GC001109"  # 원/㎡ · 인력 둘(LB000036 · LB000002) + 「노무비 * 3 / 100」
+LB = "LB000036"
+COVER = {"덮개": {f"labor:{LB}#0": {"qty": 0.5}}}
+COL = "sub2임시"
+
+
+def _sc(folder, lines):
+    with store.at(folder):
+        body = {"이름": "sub2임시 조합", "단위": "㎡", "담은로직": lines}
+        return refs.create("precombo", body)["이름"]
+
+
+def _read(folder, kind, key):
+    with store.at(folder):
+        return store.read(kind, key)["문서"]
+
+
+def _write(folder, kind, key, doc):
+    with store.at(folder):
+        have = (
+            store.read(kind, key)["판"] if (store.root() / kind / f"{key}.json").is_file() else ""
+        )
+        store.write(kind, key, have, doc)
+
+
+def _labor(folder, lines):
+    _write(folder, "labor", COL, {"열": COL, "담은로직": lines, "자재": []})
+    return _read(folder, "labor", COL)
+
+
+def _calc(folder, key, doc=None):
+    """화면 셈 길(`Labor_Router._calc`) — 열 = 일위대가 열 · SC 키."""
+    with store.at(folder):
+        kind = "precombo" if key.startswith("SC-") else "labor"
+        got = labor.clean({**(doc or store.read(kind, key)["문서"]), "열": key})
+        return lc.mark(labor.calc(got, {}), lc.settle(got))
+
+
+def _unit(folder, key):
+    """SC 1 단위 값(쓰는 쪽 `Expand` · 안 줄 수량 1)."""
+    ref = {"층": "personal", "주인": "7/42", "키": key}
+    with store.at(folder):
+        lines = refs.read_ref(ref)["담은로직"]
+        given = {f"{refs.ref_id(ref)}#{i}": 1 for i in range(len(lines))}
+        return refs.Expand(m01.loaded()[1], given=given)(ref)["기준"]["계"]
+
+
+def _double(key):
+    row = copy.deepcopy(_live().get(key))
+    row["값"] = row["값"] * 2
+    return row
+
+
+def test_copy_stamped_logic_change_kept(world, monkeypatch):
+    """① 일위대가 · SC 저장 때 사본 · M01 로직 바꿔도 금액 그대로 · M01 새 판 배지."""
+    me = world["personal"]
+    sc = _sc(me, [{"로직": PCT, "수량": {"손": 1}}])
+    doc = _labor(me, [{"로직": PCT, "수량": {"손": 2}}])
+    for got in (doc, _read(me, "precombo", sc)):
+        assert PCT in {r["키"] for r in got["사본"]["로직"]}
+        assert LB in {r["키"] for r in got["사본"]["단가"]}
+    was = (_calc(me, COL)["반영합"]["계"], _calc(me, sc)["기준합"]["계"], _unit(me, sc))
+    assert _calc(me, COL)["사본"]["M01새판"] is False
+    _fake(monkeypatch, [_changed(_live().logic(PCT))])
+    assert labor.run_line(m01.loaded()[1], PCT, {})["기준"]["계"] != was[2]  # M01 셈은 바뀜
+    now = (_calc(me, COL)["반영합"]["계"], _calc(me, sc)["기준합"]["계"], _unit(me, sc))
+    assert now == was
+    assert _calc(me, COL)["사본"]["M01새판"] is True
+    assert labor.server(_read(me, "labor", COL))["계산값"]["반영합"]["계"] == was[0]  # 다시 저장
+
+
+def test_price_refresh_only_on_press(world, monkeypatch):
+    """② 노임 바꿈 → 그대로 · [단가 갱신] 미리 셈 = 새로 찍은 문서 값 · [저장] 때 적용."""
+    me = world["personal"]
+    sc = _sc(me, [{"로직": PCT, "수량": {"손": 1}}])
+    was = _calc(me, sc)["기준합"]["계"]
+    _fake(monkeypatch, [_double(LB)])
+    assert _calc(me, sc)["기준합"]["계"] == was and _unit(me, sc) == was
+    fresh = _calc(me, _sc(me, [{"로직": PCT, "수량": {"손": 1}}]))["기준합"]["계"]
+    assert fresh != was
+    with store.at(me):
+        got = lc.preview(labor.clean({**_read(me, "precombo", sc), "열": sc}), lc.PRICE)
+    assert got["전"]["기준합"]["계"] == was and got["후"]["기준합"]["계"] == fresh
+    assert [x["키"] for x in got["바뀐자원"]] == [LB]
+    _write(me, "precombo", sc, {**_read(me, "precombo", sc), lc.JOB: got["doc"][lc.JOB]})
+    saved = _read(me, "precombo", sc)
+    assert lc.JOB not in saved and _unit(me, sc) == fresh
+    assert _calc(me, sc)["사본"]["단가새값"] is False
+
+
+def test_regen_reapplies_line_cover(world, monkeypatch):
+    """③ [재생성] — 줄 덮개(cid) 새 사본에 다시 얹힘 · 없어진 줄 덮개 = 못얹은 · 배지 꺼짐."""
+    me = world["personal"]
+    two = {"덮개": {f"labor:{LB}#0": {"qty": 0.5}, "labor:LB000002#0": {"qty": 0.7}}}
+    _labor(me, [{"로직": PCT, "수량": {"손": 1}, "패치": two}])
+    row = copy.deepcopy(_live().logic(PCT))
+    row["호표"] = [x for n, x in enumerate(row["호표"]) if n != 1]  # 둘째 줄 없앤 새 판
+    _fake(monkeypatch, [row])
+    assert not _calc(me, COL)["줄"][0].get("짝잃음")  # 사본 = 옛 판 그대로
+    with store.at(me):
+        got = lc.preview(labor.clean(_read(me, "labor", COL)), lc.REGEN)
+    assert [x["cid"] for x in got["못얹은"]] == ["labor:LB000002#0"]
+    assert got["전"]["기준합"]["계"] != got["후"]["기준합"]["계"]
+    _write(me, "labor", COL, got["doc"])
+    doc = _read(me, "labor", COL)
+    assert doc["담은로직"][0]["패치"]["덮개"][f"labor:{LB}#0"] == {"qty": 0.5}
+    now = _calc(me, COL)
+    assert now["사본"]["M01새판"] is False and now["기준합"]["계"] == got["후"]["기준합"]["계"]
+
+
+def test_layer_and_column_copy_keep_copy(world, monkeypatch):
+    """④ 층 사이 복사(회사 → 개인) · 열 복사 = 원본 사본 그대로(지금 M01 로 다시 안 찍음)."""
+    co, me = world["company"], world["personal"]
+    src = _sc(co, [{"로직": PCT, "수량": {"손": 1}, "패치": COVER}])
+    first = _read(co, "precombo", src)["사본"]
+    old = _labor(me, [{"로직": PCT, "수량": {"손": 2}}])["사본"]  # 받는 열 = 옛 M01 사본
+    _fake(monkeypatch, [_double(LB), _changed(_live().logic(PCT))])
+    ref = {"층": "company", "주인": "7", "키": src}
+    with store.at(me):
+        got = refs.create(
+            "precombo", refs.carry(refs.origin_mark(refs.read_ref(ref), ref), ("company", "7"))
+        )
+    mine = _read(me, "precombo", got["이름"])["사본"]
+    assert (mine["판"], mine["단가판"]) == (first["판"], first["단가판"])
+    _write(me, "labor", "sub2임시2", {"열": "sub2임시2", "담은로직": [{"로직": PCT}], "자재": []})
+    other = _read(me, "labor", "sub2임시2")["사본"]  # 원본 열 = 바뀐 M01 사본
+    assert other["판"] != old["판"]
+    with store.at(me):  # 열 복사(copy_from) = 받은 사본 먼저
+        store.copy_from("labor", COL, "sub2임시2")
+    assert _read(me, "labor", COL)["사본"]["판"] == other["판"]
+
+
+def test_ts_mirror_same_amount(world, monkeypatch):
+    """⑤ 사본 셈 답 → TS 짝 settle 같은 답 · M01 바뀐 뒤에도 같은 금액."""
+    me = world["personal"]
+    doc = _labor(me, [{"로직": PCT, "수량": None}])
+    with store.at(me):
+        before = labor.calc(labor.clean(doc), {})
+    _fake(monkeypatch, [_double(LB), _changed(_live().logic(PCT))])
+    with store.at(me):
+        clean = labor.clean(_read(me, "labor", COL))
+        answer = labor.calc(clean, {})
+    assert answer["기준합"] == before["기준합"]
+    key = answer["줄"][0]["알약"]
+    for values in ({}, {key: 3}):
+        _same(labor.settle(answer, clean, values), _ts(answer, clean, values))
+
+
+def test_old_doc_without_copy_old_path(world, monkeypatch):
+    """⑥ 사본 없는 옛 일위대가 = 셈은 지금 M01(옛 길) · 다시 저장하면 그때 사본."""
+    me = world["personal"]
+    _labor(me, [{"로직": PCT, "수량": {"손": 1}}])
+    path = me / "labor" / f"{COL}.json"
+    raw = {k: v for k, v in json.loads(path.read_bytes()).items() if k != "사본"}
+    path.write_text(json.dumps(raw, ensure_ascii=False), encoding="utf-8")
+    assert "사본" not in _calc(me, COL)
+    _fake(monkeypatch, [_double(LB)])
+    moved = labor.run_line(m01.loaded()[1], PCT, {})["기준"]["계"]
+    assert _calc(me, COL)["기준합"]["계"] == pytest.approx(moved, abs=1)
+    with store.at(me):
+        assert skc.has(labor.server(raw))