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FixedPatchStepper: level-indexed API, drop 15 fine/child compatibility views

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- Hierarchy documents level/pair/shape/frame conventions; edge_frame(l)
  replaces the stepper's inline origin/spacing loop.
- Public per-level read-only state: layouts, boundaries, jets, leaf.
- set_jet_amplitude/read_raw_exchange/read_exchange_window: level= required.
- remap_child(child_objects=) -> remap_finest(objects=).
- _kernel_configs, _upload_boundary, _observed_boundary/_summarize split
  construction and observation duplication; behavior unchanged.
- fine_level_origin -> fine_level_offset (a (y, x) index, not an origin).
- docs: migration map in docs/development/src_coherence.md.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Claude
2026-10-28 01:39:48 +00:00
co-authored by Claude Opus 5.5
parent 0c64f821a4
commit b4eacf7526
9 changed files with 212 additions and 135 deletions
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docs/supported_settings.md
+2 -2
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@@ -35,7 +35,7 @@ Tests: `tests/unit/test_refinement_mrt.py`, `tests/validation/multigrid/test_ref
| `slot_reservoir` | on-site velocity bottom slot, reservoir top, velocity 0, 2 <= slot width < nx, patch rows 4..ny-4 | `lbm/refinement_stepper.py` `FixedPatchStepper.__init__`; `lbm/refinement.py` `prepare_fine_boundary` |
| `channel` | all levels blocked; Zou-He inlet, pressure-NEQ outlet, stationary bounce-back walls; transfers away from the closure | `lbm/channel.py` `validate_channel_config`, `validate_channel_transfers` |
| Explosion | `constant` (default); `projected_linear` only periodic, all-blocked SRT, no bodies/Jets, no LES (experimental) | `lbm/refinement_stepper.py` `FixedPatchStepper.__init__` |
| L2 runtime remap (`remap_child`) | periodic three-level L2 sets only, no L0/L1 bodies, identical pinned boundary | `lbm/refinement_stepper.py` `FixedPatchStepper.remap_child` |
| L2 runtime remap (`remap_finest`) | periodic three-level L2 sets only, no L0/L1 bodies, identical pinned boundary | `lbm/refinement_stepper.py` `FixedPatchStepper.remap_finest` |
Tests: `tests/unit/test_refinement_three_level_multipatch.py`, `tests/validation/multigrid/test_refinement_multipatch.py`,
`test_refinement_three_level.py`, `test_refinement_three_level_multipatch_gpu.py`, `test_refinement_blocked_base.py`,
@@ -84,6 +84,6 @@ Tests: `tests/unit/test_jets.py`, `test_jets_review.py`, `test_shifted_jets.py`,
## Not supported in this release
3D, dynamic/automatic AMR (tagging, time-varying hierarchies beyond `remap_child`),
3D, dynamic/automatic AMR (tagging, time-varying hierarchies beyond `remap_finest`),
moving bodies on refined levels, pressure Jets, Jet checkpoints, LES or TRT on refined
levels, partial (non-dividing) tiles.