修改问题

tests/unit/test_project_detail_api_handler.py

@@ -94,3 +94,41 @@ async def test_project_detail_create_failure_preserves_push_id_and_biz_id() -> N
     assert result.metadata["biz_id"] == "project-1"
     assert result.metadata["project_id"] == "project-1"
     assert result.metadata["key"] == "production"
+
+
+def test_project_detail_load_conflict_raises_on_same_project_key_different_data_id() -> None:
+    collection = DataCollection("remote")
+
+    project = _ProjectNode(
+        node_id="project-node-1",
+        data_id="project-1",
+        data={"id": "project-1"},
+    )
+    collection._nodes[project.node_id] = project
+
+    existing_detail = ProjectDetailSyncNode(
+        node_id="detail-node-1",
+        data_id="detail-old",
+        data={
+            "id": "detail-old",
+            "project_id": "project-1",
+            "key": "actual_construction",
+            "value": [{"date": "2026-01-01", "capacity": 1.0}],
+        },
+        context={"project_id": "project-1"},
+    )
+    collection._nodes[existing_detail.node_id] = existing_detail
+    collection._data_id_to_node_id[existing_detail.data_id] = existing_detail.node_id
+
+    handler = ProjectDetailApiHandler()
+    handler.set_collection(collection)
+
+    with pytest.raises(RuntimeError, match="project_detail_data load conflict"):
+        handler._create_node(
+            {
+                "id": "detail-new",
+                "project_id": "project-1",
+                "key": "actual_construction",
+                "value": [{"date": "2026-01-02", "capacity": 2.0}],
+            }
+        )