feat(B05): 숨긴 옵션은 필수 아님 — 저장 검증이 M02 옵션 보이기 표를 봄 · 시험 한 건

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01L6KXAabDTenEU7hrDQmCKY

resources/tester/test_m02_structure_options.py

@@ -27,6 +27,10 @@ URL = "/api/m02/structure-options"
 TYPES = "/api/projects/structure-types"
 
 
+def structure_type(type_id):
+    return next(t for t in load_structure_types() if t.type_id == type_id)
+
+
 @pytest.fixture
 def client(tmp_path: Path, monkeypatch) -> TestClient:
     monkeypatch.setattr(store, "FOLDER", tmp_path)
@@ -127,3 +131,38 @@ def test_좌측_줄은_구조물_집계_양식_아래_한_줄_같은_한_곳에
     )
     ui = (ROOT / "M02_MasterTemplete/M02_MasterTemplete_Options.ts").read_text("utf-8")
     assert 'o.phase === "detail"' in ui  # B06 전용 표시
+
+
+def test_숨긴_옵션은_필수_아님_저장이_안_막힘(client, tmp_path, monkeypatch) -> None:
+    """B05 필수(기본값 없음) 옵션 — 보이면 막고 숨기면 저장됨(다른 필수는 그대로)."""
+    from B05_Profile import B05_Profile_Structures_Repository as repo
+    from B05_Profile.B05_Profile_Structures_Schema import (
+        StructureInstance,
+        StructureOptionField,
+        StructureType,
+    )
+
+    def must(key):
+        return StructureOptionField(key=key, label=key, input="number", required=True, phase="b05")
+
+    fake = StructureType(
+        type_id="fake_hide",
+        group="Z",
+        name="가짜",
+        placement="point",
+        options=[must("a"), must("b")],
+    )
+    real = repo.structure_type_map()
+    monkeypatch.setattr(repo, "structure_type_map", lambda: {**real, "fake_hide": fake})
+    item = lambda opts: StructureInstance.model_validate(  # noqa: E731
+        {"type_id": "fake_hide", "placement": "point", "chainage_m": 10.0, "options": opts}
+    )
+    root = str(tmp_path / "project")
+    with pytest.raises(ValueError, match="필수"):
+        repo.save_structures(root, [item({})], base_revision=0)  # 보임 = 필수 그대로
+    (store.FOLDER / opt.FILE).write_text('{"fake_hide": {"a": false}}', encoding="utf-8")
+    with pytest.raises(ValueError, match="필수"):  # a 는 숨겨 통과 · b 는 여전히 필수
+        repo.save_structures(root, [item({})], base_revision=0)
+    assert (
+        repo.save_structures(root, [item({"b": 3})], base_revision=0) == 1
+    )  # 숨긴 a 는 빈 채 저장