build_hierarchy(cfg, [], wall_aware=True) left both base wall rows ACTIVE;
the refined path already marked them OUTER. Add the regression test.
Found by native review of eeb90ac.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
lbm/hierarchy.py loops the existing pair logic (FixedPatch2D/FixedPatchSet2D
for L0->L1, nest_patch/nest_patch_set for deeper pairs, _middle_config for
the per-level config chain) and returns validated per-level configs, pair
tables and composed kinds for any depth. Legacy scalar window forms are
accepted so existing public shapes are unchanged. Validates each config copy
because LBMConfig.omega is only computed by validate(). Not yet used by the
stepper.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Codex