fix(472-2 덧 횡단 차례): 횡단 파일 = 측점(누가거리) 차례로 읽음 — 이름 차례면 cross_01080.16m 이 cross_01080m 앞

- cross_files_in_order 한 벌(Engine_Sections) — B06 상세 GET(_read_section_detail) · B07 측점 파일(_cross_files) 둘 다 이것으로
- B07 측점 도면 장 나눔의 이름 차례 sorted 걷음
- 시험 test_472_2_cross_order(옛 코드 빨강 셋 → 초록)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

B05_Profile/B05_Profile_Engine_Sections.py

@@ -163,6 +163,18 @@ def valid_cross_names(cross_dir: Path, stations: list[Any]) -> set[str]:
     }
 
 
+def cross_files_in_order(cross_dir: Path, stations: list[Any]) -> list[Path]:
+    """잔재를 걸러 읽을 cross_*.json — **측점 차례**(이름 차례면 `01080.16` 이 `01080` 앞)."""
+    valid = valid_cross_names(cross_dir, stations)
+
+    def chainage(path: Path) -> tuple[float, str]:
+        match = re.fullmatch(rf"cross_{CROSS_KEY_PATTERN}m", path.stem)
+        return (float(match.group(1)) if match else float("inf"), path.name)
+
+    files = [path for path in cross_dir.glob("cross_*.json") if not valid or path.name in valid]
+    return sorted(files, key=chainage)
+
+
 def prune_stale_cross_files(cross_dir: Path, stations: list[Any]) -> set[str]:
     """stations에 없는 잔재 cross_*.json을 삭제하고 유효 파일명 집합을 반환한다.
 

B06_Section/B06_Section_Router.py

@@ -16,9 +16,9 @@ from fastapi.responses import JSONResponse, Response
 from B03_FileInput.B03_FileInput_Repository import get_project_storage_relative_path
 from B05_Profile.B05_Profile_Engine_Grade_Profile import rebuild_alignment_profile
 from B05_Profile.B05_Profile_Engine_Sections import (
+    cross_files_in_order,
     relabel_pipe_stations,
     run_section_generation,
-    valid_cross_names,
 )
 from B05_Profile.B05_Profile_Engine_Sections_Core import SectionGenerationOptions
 from B06_Section.B06_Section_Engine_Attach import attach_saved_shapes
@@ -248,12 +248,10 @@ def _read_section_detail(project_root: Path, longitudinal_file_path: str) -> dic
 
     longitudinal = json.loads(longitudinal_path.read_text(encoding="utf-8"))
     stations = longitudinal.get("stations") if isinstance(longitudinal, dict) else None
-    # 조회는 지우지 않음 — 잔재는 걸러 읽기만(지우기는 측점을 쓰는 쪽 몫)
-    valid_names = valid_cross_names(cross_dir, stations if isinstance(stations, list) else [])
+    # 조회는 지우지 않음 — 잔재는 걸러 읽기만(지우기는 측점을 쓰는 쪽 몫) · 측점 차례(472-2)
     cross_sections = [
         json.loads(path.read_text(encoding="utf-8"))
-        for path in sorted(cross_dir.glob("cross_*.json"))
-        if not valid_names or path.name in valid_names
+        for path in cross_files_in_order(cross_dir, stations if isinstance(stations, list) else [])
     ]
     if not isinstance(longitudinal, dict) or not all(
         isinstance(section, dict) for section in cross_sections

B07_DesignDetail/B07_DesignDetail_Router_Support.py

@@ -286,7 +286,7 @@ def _cross_sheet_plan(project_root: Path, longitudinal_path: Path) -> list[dict[
     """
     longitudinal = _read_json(longitudinal_path)
     chainages: list[int | float] = []
-    for path in sorted(_cross_files(longitudinal_path, longitudinal)):
+    for path in _cross_files(longitudinal_path, longitudinal):
         match = _CROSS_ID.fullmatch(path.stem)
         if not match:
             continue

B07_DesignDetail/B07_DesignDetail_Router_Support_Io.py

@@ -9,7 +9,7 @@ import re
 from pathlib import Path
 from typing import Any
 
-from B05_Profile.B05_Profile_Engine_Sections import cross_station, valid_cross_names
+from B05_Profile.B05_Profile_Engine_Sections import cross_files_in_order, cross_station
 
 logger = logging.getLogger(__name__)
 
@@ -39,12 +39,8 @@ def _cross_files(longitudinal_path: Path, longitudinal: dict[str, Any]) -> list[
     if not cross_dir.is_dir():
         raise FileNotFoundError("B06 횡단면 파일을 찾을 수 없습니다.")
     stations = longitudinal.get("stations")
-    # 읽기는 지우지 않음 — 잔재는 걸러 읽기만(지우기는 측점을 쓰는 쪽 몫 · R26)
-    valid_names = valid_cross_names(cross_dir, stations if isinstance(stations, list) else [])
-    files = sorted(cross_dir.glob("cross_*.json"))
-    if valid_names:
-        files = [path for path in files if path.name in valid_names]
-    return files
+    # 읽기는 지우지 않음 — 잔재는 걸러 읽기만(지우기는 측점을 쓰는 쪽 몫 · R26) · 측점 차례(472-2)
+    return cross_files_in_order(cross_dir, stations if isinstance(stations, list) else [])
 
 
 def _station_map(longitudinal: dict[str, Any]) -> dict[int | float, dict[str, Any]]:

resources/tester/test_472_2_cross_order.py

@@ -0,0 +1,64 @@
+# -*- coding: utf-8 -*-
+"""472-2 덧 — 횡단 파일을 측점(누가거리) 차례로 읽는지.
+
+이름 차례면 `cross_01080.16m` 이 `cross_01080m` 앞(「.」 < 「m」) → GET 상세의 측점 차례가
+어긋나 화면 차례 짝(detailCross)이 갈리고, B07 측점 도면 장 나눔도 차례가 뒤집힘.
+"""
+
+from __future__ import annotations
+
+import json
+import sys
+from pathlib import Path
+
+ROOT = Path(__file__).resolve().parents[2]
+if str(ROOT) not in sys.path:
+    sys.path.insert(0, str(ROOT))
+
+from B06_Section.B06_Section_Router import _read_section_detail  # noqa: E402
+from B07_DesignDetail.B07_DesignDetail_Router_Support_Io import _cross_files  # noqa: E402
+
+CHAINAGES = [1060.0, 1080.0, 1080.16, 1100.0, 999.5]
+NAMES = {
+    1060.0: "cross_01060m.json",
+    1080.0: "cross_01080m.json",
+    1080.16: "cross_01080.16m.json",
+    1100.0: "cross_01100m.json",
+    999.5: "cross_00999.50m.json",
+}
+
+
+def _stage(tmp_path: Path) -> Path:
+    stage = tmp_path / "B05_Profile"
+    (stage / "cross_sections").mkdir(parents=True)
+    (stage / "longitudinal").mkdir()
+    longitudinal = stage / "longitudinal" / "longitudinal.json"
+    longitudinal.write_text(
+        json.dumps({"stations": [{"chainage_m": m} for m in CHAINAGES]}), encoding="utf-8"
+    )
+    for chainage, name in NAMES.items():
+        (stage / "cross_sections" / name).write_text(
+            json.dumps({"chainage_m": chainage, "samples": []}), encoding="utf-8"
+        )
+    return longitudinal
+
+
+def test_상세_GET_은_측점_차례(tmp_path: Path) -> None:
+    longitudinal = _stage(tmp_path)
+    detail = _read_section_detail(tmp_path, str(longitudinal.relative_to(tmp_path)))
+    got = [section["chainage_m"] for section in detail["cross_sections"]]
+    assert got == sorted(CHAINAGES)
+
+
+def test_B07_측점_파일도_측점_차례(tmp_path: Path) -> None:
+    longitudinal = _stage(tmp_path)
+    files = _cross_files(longitudinal, json.loads(longitudinal.read_text(encoding="utf-8")))
+    assert [path.name for path in files] == [NAMES[m] for m in sorted(CHAINAGES)]
+
+
+def test_B07_장_나눔도_측점_차례() -> None:
+    """장 나눔 쪽이 이름으로 다시 줄 세우지 않음(`sorted(_cross_files(…))` = 이름 차례)."""
+    source = (ROOT / "B07_DesignDetail" / "B07_DesignDetail_Router_Support.py").read_text(
+        encoding="utf-8"
+    )
+    assert "sorted(_cross_files(" not in source