Added warning for multi-zone GAI cases with remove_hidden_geometry = True

[savithru-flex]

Added warning for multi-zone GAI cases with remove_hidden_geometry = True since it's not fully supported

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Note

Medium Risk
Adds new validation warnings and slightly changes GAI surface-meshing JSON filtering to include CustomZones, which can affect meshing inputs for some multi-zone configurations.

Overview
Adds a new post-validation warning when defaults.remove_hidden_geometry=True is used alongside multiple effective volume zones (multiple CustomVolumes and/or an AutomatedFarfield/WindTunnelFarfield), since hidden-geometry removal is not fully supported for multi-zone cases.

Updates the GAI surface-meshing translator filter to pass through CustomZones in volume_zones, and adds comprehensive tests covering warning/no-warning scenarios (including UserDefinedFarfield not counting toward the zone total).

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[Copilot]

Pull request overview

Adds a validation warning for Geometry AI meshing configurations where remove_hidden_geometry=True is used in multi-zone setups, since that combination isn’t fully supported.

Changes:

• Added a MeshingParams validator to warn when remove_hidden_geometry=True is combined with multiple farfield/custom-zone configurations.
• Updated GAI surface meshing JSON filtering to include CustomZones in the translated volume_zones.
• Added tests covering warning/no-warning cases for the new validation behavior.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
flow360/component/simulation/meshing_param/params.py	Adds the new multi-zone + remove_hidden_geometry validation warning.
flow360/component/simulation/translator/surface_meshing_translator.py	Includes CustomZones in the filtered volume_zones passed to GAI surface meshing translation.
tests/simulation/params/meshing_validation/test_meshing_param_validation.py	Adds unit tests validating the warning behavior.

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