feat(561-2): D 예정노선 지형 격자 2 m · B 공용 1 m 그대로 (grid_m 인자)

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

D03_PlanAnalysis/D03_PlanAnalysis_Terrain.py

@@ -38,8 +38,8 @@ from B04_PreProcess.B04_PreProcess_Engine_SheetSurface import build_sheet_surfac
 from B04_PreProcess.B04_PreProcess_Engine_VWorld import download_vworld_satellite_map
 from common_util.common_util_json import atomic_write_json
 from config.config_system_terrain import (
+    PLAN_TERRAIN_GRID_M,
     SHEET_SURFACE_DEFAULT_METHOD,
-    SHEET_SURFACE_GRID_M,
     SHEET_SURFACE_MARGIN_M,
 )
 
@@ -148,7 +148,7 @@ def plan_extent(
         "covered": covers(have, box),
         "sheets": sheets,
         # DEM 칸 수 어림 — 받기 시간 · 메모리 가늠
-        "cells": int((box[2] - box[0]) * (box[3] - box[1]) / SHEET_SURFACE_GRID_M**2),
+        "cells": int((box[2] - box[0]) * (box[3] - box[1]) / PLAN_TERRAIN_GRID_M**2),
     }
 
 
@@ -270,6 +270,7 @@ def ensure_plan_terrain(
         outline,
         f"EPSG:{int(epsg)}",
         [SHEET_SURFACE_DEFAULT_METHOD],
+        PLAN_TERRAIN_GRID_M,
     )
     if not models:
         raise ValueError(