fix(530-2): D 분석 지점 0.1 mm 반올림 — 노선 끝점 = 지점 · 연도 경계 정확히 맞물림 · 복도 300 m 실측 근거 주석

- 엔진 출력 자리수(4)로 지점을 맞춰 넣음 · 저장본 지점 대조 1 mm
- 실측(검증_sub3 근처 두 구간): 복도 100 · 200 · 300 m 못 지킨 곳 5 · 8 · 1

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

resources/tester/test_530_2_plan_analyze.py

@@ -12,8 +12,8 @@ from D03_PlanAnalysis import D03_PlanAnalysis_Analyze as analyze
 
 CRITERIA = {"max_grade": 0.14, "min_radius_m": 12.0, "design_speed": 20}
 SEGMENTS = [
-    {"year": 2026, "start": (60.0, 200.0), "end": (560.0, 230.0)},
-    {"year": 2027, "start": (560.0, 230.0), "end": (1040.0, 160.0)},
+    {"year": 2026, "start": (60.0, 200.0), "end": (560.123456789, 230.987654321)},
+    {"year": 2027, "start": (560.123456789, 230.987654321), "end": (1040.0, 160.0)},
 ]
 
 
@@ -54,8 +54,8 @@ def test_boundary_chainage_and_line(run) -> None:
         for route in result["routes"].values():
             assert "error" not in route
             # 시종점 그대로 — 연도 경계가 정확히 맞물림
-            assert route["planned"][0] == list(seg["start"])
-            assert route["planned"][-1] == list(seg["end"])
+            assert route["planned"][0] == result["start"] == pytest.approx(seg["start"], abs=1e-4)
+            assert route["planned"][-1] == result["end"] == pytest.approx(seg["end"], abs=1e-4)
     assert results[0]["routes"]["gradeline"]["planned"][-1] == results[1]["start"]
 
     rows = analyze.chain(results, {2026: "earthwork", 2027: None}, 1234.5)
@@ -70,7 +70,7 @@ def test_boundary_chainage_and_line(run) -> None:
     first = results[0]["routes"]["earthwork"]["planned"]
     second = results[1]["routes"]["gradeline"]["planned"]
     assert len(line) == len(first) + len(second) - 1  # 경계점 한 번만(꺾인 채)
-    assert line[len(first) - 1] == list(SEGMENTS[0]["end"])
+    assert line[len(first) - 1] == results[0]["end"] == results[1]["start"]
 
 
 def test_same_input_reads_store(run, monkeypatch) -> None: