Scheduled sync: main → develop

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  Please resolve and merge to bring develop up to date with main.

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Note

Medium Risk
Changes core meshing parameter validation and farfield-method inference, which can alter which configurations are accepted and how downstream meshing is configured.

Overview
Meshing validation now allows volume_zones to omit an explicit farfield zone when CustomZones contain CustomVolume entities, updating the error message to reflect the new requirement.

Farfield method inference is adjusted in both MeshingParams.farfield_method and ParamsValidationInfo._get_farfield_method_ to return user-defined when custom zones/seedpoint volumes are present without any farfield zone, and new tests cover the no-farfield custom-zones case plus a failure case requiring enclosed_entities when pairing explicit farfield types with custom volumes.

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