feat(B07): 평면도 축척 여덟 · 실거리 상수 축척화 · 막힌 글 먼 자리(141-2)

- 축척 = 1/500 · 600 · 1,000 · 1,200(기본) · 2,500 · 3,000 · 5,000 · 6,000(지식DB 근거)
- 비탈 눈금 간격 · 대피소 띄움 · 필지 버퍼 · 틈 = 1/1,200 실거리 × 축척 비(종이 거리 같게 · 1/6,000 눈금 10 m)
- 글 후보가 다 막히면 기호에서 2 · 3 배 먼 자리 + 지시선 — 검증_sub8 1/6,000 겹친 쌍 55 → 4
- 시험 test_119 · test_141 늘림

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01STqEqztUthVFBmEP18wBSz

B07_DesignDetail/B07_DesignDetail_Router_Support_Plan.py

@@ -42,6 +42,7 @@ from B07_DesignDetail.B07_DesignDetail_Engine_Cad_PlanKinds import (
     slope_end,
     slope_pieces,
 )
+from B07_DesignDetail.B07_DesignDetail_Engine_Cad_PlanSlope import tick_step_m
 from B07_DesignDetail.B07_DesignDetail_Router_Support_Basin import (
     _chunk_route,
     _hillshade_for_box,
@@ -77,7 +78,7 @@ _NAME_MAX = 40
 WATERSHED_LAYOUT = "watershed"
 _LAYOUTS = ("plan", WATERSHED_LAYOUT)
 _REFUGE_TYPES = {"refuge": "대피소", "spoil_bank": "사토장"}
-_REFUGE_OFFSET_M = 8.0  # 대피소 · 사토장 라벨을 중심선에서 띄우는 거리(좌측)
+_REFUGE_OFFSET_M = 8.0  # 대피소 · 사토장 기호를 중심선에서 띄우는 거리(좌측 · 1/1,200 실거리)
 
 
 def plan_title(name: str) -> str:
@@ -391,9 +392,16 @@ def slope_records(
 
 
 def _refuge_items(
-    project_root: Path, route: list[tuple[float, float, float]], start_m: float, end_m: float
+    project_root: Path,
+    route: list[tuple[float, float, float]],
+    start_m: float,
+    end_m: float,
+    scale: int = DRAWING_SCALE_PLAN,
 ) -> dict[str, Any]:
-    """대피소 · 사토장 = 구조물 정본의 그 종류 + 사용자가 정한 자리. 한 자리에 둘 다 가능."""
+    """대피소 · 사토장 = 구조물 정본의 그 종류 + 사용자가 정한 자리. 한 자리에 둘 다 가능.
+
+    띄움은 종이 거리가 같게 축척 따라(141-2)."""
+    offset = _REFUGE_OFFSET_M * scale / DRAWING_SCALE_PLAN
     spots: dict[float, set[str]] = {}
     _revision, structures = load_structures(str(project_root))
     for structure in structures:
@@ -420,8 +428,8 @@ def _refuge_items(
             {
                 "chainage_m": chainage,
                 "label": " · ".join(name for name in ("대피소", "사토장") if name in labels),
-                "x": x + nx * _REFUGE_OFFSET_M,
-                "y": y + ny * _REFUGE_OFFSET_M,
+                "x": x + nx * offset,
+                "y": y + ny * offset,
             }
         )
     return {"items": items}
@@ -464,7 +472,7 @@ def build_pieces(
             pieces["fill_outline"],
             pieces["cut_outline"],
             pieces["slope_ticks"],
-        ) = slope_pieces(route, records, start_m, end_m)
+        ) = slope_pieces(route, records, start_m, end_m, tick_step_m(scale))
     if {"ip", "radius"} & set(wanted):
         pieces["ip"], pieces["radius"] = curve_pieces(_load_design_curves(project_root), route, box)
     if "station" in wanted:
@@ -502,7 +510,7 @@ def build_pieces(
             items.append({"label": label, "x": x, "y": y, "nx": nx, "ny": ny})
         pieces["endpoints"] = {"items": items}
     if "refuge" in wanted:
-        pieces["refuge"] = _refuge_items(project_root, route, start_m, end_m)
+        pieces["refuge"] = _refuge_items(project_root, route, start_m, end_m, scale)
     if "drainage" in wanted:
         min_x, min_y, max_x, max_y = box
         pieces["drainage"] = {