Run SWE porosity before SWE LOD export in --export all

geodata_to_unity.py

@@ -243,8 +243,10 @@ def main(argv: Iterable[str] | None = None) -> int:
         if target_export in ("swe-porosity",):
             exit_codes.append(export_swe_porosity(cfg, force_vrt=args.force_vrt))
         if target_export == "all":
-            exit_codes.append(export_swe_lods(cfg, force_vrt=args.force_vrt))
+            # Keep porosity before swe-lods so the final SWE tile index contains
+            # populated height_path entries from swe-lods.
             exit_codes.append(export_swe_porosity(cfg, force_vrt=args.force_vrt))
+            exit_codes.append(export_swe_lods(cfg, force_vrt=args.force_vrt))
 
         # Enhanced exports (use point cloud data)
         # Order matters: heightmap-enhanced creates tile_index.csv needed by others