- test_channel_root: owner is uint64; int() before -1 so the probe slot
stays an integer under NumPy 1 value-based promotion.
- test_shifted_storage: build FP32 fixtures with FP32 NaN; np.where with a
Python NaN promoted to FP64 under NumPy 1, so the shifted FP32 contract
rejected the fixture before the intended checks.
- test_block_stepper: fake backend sets _ddf_shifting (unshifted).
- test_fine_surface_gpu: set _boundary_hosts/_level_jets; fine_boundary
is now a read-only view over the level lists.
- test_refinement_followup: set _layouts (fine_layout is a read-only
view); a pair tau that disagrees with its level config is now rejected
by hierarchy._check_chain before the per-level omega/tau check.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
TRON