[LOAD FROM] Parquet：Arrow list/map 列推导为 list / map

[shirly121]

Parent

跟踪父 issue: #182

Describe the gap

Parquet 中 array / map 列应分别推导为 list / map；数据见 example_dataset/comprehensive_graph/parquet/（xfail）。

Reproduce

export NEUG_RUN_EXTENSION_TESTS=1
pytest tools/python_bind/tests/test_sniffer.py::TestLoadSniffer::test_parquet_type_inference_list -v
pytest tools/python_bind/tests/test_sniffer.py::TestLoadSniffer::test_parquet_type_inference_map -v

Expected

• list_col → [1, 2, 3]
• map_col → {"a": "abc", "b": "bcd"}

Current

xfail: Parquet list / map Arrow TODOs in test_sniffer.py.