FaceGroup Specification of min Passage Size

[NasserFlexCompute]

Note

Low Risk
Adds an optional parameter plus a non-fatal validation warning and updates related translator fixtures/tests; no core algorithm changes, but could affect expectations for validation output and serialized meshing configs.

Overview
Adds per-face min_passage_size support to GeometryRefinement, letting callers override the hidden-geometry-removal passage threshold for specific face groups.

Extends meshing validation to emit a warning (not an error) when a per-face min_passage_size is provided but meshing.defaults.remove_hidden_geometry is disabled, since the override would be ignored. Updates translator fixtures/tests to include remove_hidden_geometry: true and to serialize the new min_passage_size field in GAI surface meshing JSON, plus new validation coverage for the warning behavior.

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[Copilot]

Pull request overview

This PR adds support for specifying min_passage_size at the face group level through the GeometryRefinement class. This allows users to override the global min_passage_size setting (from MeshingDefaults) for specific face groups, providing finer control over hidden geometry removal resolution.

Changes:

• Added min_passage_size field to GeometryRefinement class for per-face-group specification
• Updated test to include min_passage_size parameter in a GeometryRefinement instance
• Updated reference JSON to reflect the expected serialization format

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
flow360/component/simulation/meshing_param/face_params.py	Added min_passage_size as an optional field to GeometryRefinement class with appropriate type hints and description
tests/simulation/translator/test_surface_meshing_translator.py	Added test coverage for the new min_passage_size field in a GeometryRefinement refinement
tests/simulation/translator/ref/surface_meshing/gai_surface_mesher.json	Updated reference JSON to include the expected serialization of min_passage_size field

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