feat: ERA5 预处理完成 — 修复 NetCDF 引擎 (h5netcdf+dask)，统一 NPZ 命名，109.6万序列样本

pyproject.toml

@@ -23,6 +23,7 @@ dependencies = [
     "scipy>=1.11",
     "h5netcdf>=1.8.1",
     "h5py>=3.16.0",
+    "dask>=2026.3.0",
 ]
 
 [tool.uv.sources]

src/data/preprocess.py

@@ -69,7 +69,7 @@ def load_era5_city(city: str) -> xr.Dataset:
     combined = xr.open_mfdataset(
         nc_files,
         combine="by_coords",
-        engine="netcdf4",
+        engine="h5netcdf",
         chunks=None,  # 小区域数据直接加载到内存
     )