feat(M02): 도면 양식 작도 영역 칸 drawing_area — 박힌 _A1_INNER 대신 양식에서 읽음 (PLAN 10-3)

- 00_template_A1.json 에 drawing_area [42, 47, 812, 567]
- Engine_Template drawing_area(이름) · 칸이 없거나 어긋나면 A1 기본값 · usable_area · usable_bbox · frame_entities 가 씀
- 도각 저장은 고치기 전 양식의 작도 영역을 이어 받음
- 시험 test_m02_drawing_area.py

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PxvYb5ufV1kWdBvZbpDfu6

resources/master_template/drawing/00_template_A1.json

@@ -1,6 +1,7 @@
 {
   "format": 6,
   "source": "00_templete_A1.dxf (남의 프로젝트 자료 제거 · 플레이스홀더화)",
+  "drawing_area": [42, 47, 812, 567],
   "entities": [
     {
       "id": "4afa84ae-9c15-50ec-8a76-db87d04d6311",

resources/tester/test_m02_drawing_area.py

@@ -0,0 +1,65 @@
+"""M02 도면 양식 작도 영역 칸(`drawing_area`) — 양식이 정본 · 없으면 A1 기본값 (PLAN 10-3)."""
+
+import json
+
+from B07_DesignDetail import B07_DesignDetail_Engine_Template as engine
+
+
+def _company_template(tmp_path, document):
+    path = engine.company_template_path(tmp_path)
+    path.parent.mkdir(parents=True)
+    path.write_text(json.dumps(document), encoding="utf-8")
+    return path
+
+
+def test_system_a1_reads_drawing_area():
+    engine.use_company_templates(None)
+    assert engine.drawing_area() == (42.0, 47.0, 812.0, 567.0)
+    # 도각 배치는 옮기기 전 박힌 값과 같다 — 콘텐츠 중심 = 작도 영역 중심.
+    frame = engine.frame_entities("t", (0.0, 0.0, 100.0, 100.0), fit=False)
+    assert frame
+
+
+def test_missing_area_falls_back_to_a1(tmp_path):
+    _company_template(tmp_path, {"format": 6, "entities": [], "layers": []})
+    engine.use_company_templates(tmp_path)
+    try:
+        assert engine.drawing_area() == engine._A1_INNER
+    finally:
+        engine.use_company_templates(None)
+
+
+def test_template_area_moves_content(tmp_path):
+    line = {
+        "id": "a",
+        "type": "Line",
+        "shapeData": {"startPoint": {"x": 0, "y": 0}, "endPoint": {"x": 10, "y": 0}},
+    }
+    _company_template(
+        tmp_path,
+        {"format": 6, "drawing_area": [0, 0, 400, 200], "entities": [line], "layers": []},
+    )
+    engine.use_company_templates(tmp_path)
+    try:
+        assert engine.drawing_area() == (0.0, 0.0, 400.0, 200.0)
+        assert engine.usable_area() == (400 * 0.96, 200 * 0.96)
+        # 콘텐츠 중심(500, 500) 이 작도 영역 중심(200, 100) 에 온다 — 이동량 (300, 400).
+        placed = engine.frame_entities("t", (490.0, 490.0, 510.0, 510.0), fit=False)
+        assert placed[0]["shapeData"]["startPoint"] == {"x": 300.0, "y": 400.0}
+    finally:
+        engine.use_company_templates(None)
+
+
+def test_bad_area_falls_back(tmp_path):
+    _company_template(tmp_path, {"drawing_area": [10, 10, 5, 5], "entities": []})
+    engine.use_company_templates(tmp_path)
+    try:
+        assert engine.drawing_area() == engine._A1_INNER
+    finally:
+        engine.use_company_templates(None)
+
+
+def test_save_keeps_area(tmp_path):
+    # 편집본(CAD)에는 작도 영역 칸이 없다 — 저장이 시스템 양식 값을 이어 받는다.
+    path = engine.save_company_template(tmp_path, [])
+    assert json.loads(path.read_text(encoding="utf-8"))["drawing_area"] == [42, 47, 812, 567]