test: adopt native-validated 24-target probe layout

Horizontal y=56 and vertical x=38 through box 1, normal coordinates
[12.5..26.125] (root128 physical). Nearest-ACTIVE mapping with
deterministic tie rule (distance, finer level, smaller j, smaller i),
duplicate-cell rejection, stored centers and displacements. Replaces my
earlier offsets, which mapped two target pairs to the same U128 cell.
U512 spacing 128/512 and root step r -> U512 step 4r unchanged.
Tests: 24 unique cells per case, nested 3 L0 + 5 L1 + 4 L2 per transect,
U128 max displacement 0.625.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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ClaudeandClaude Opus 5.5 committed 2026-10-19 03:13:43 +00:00
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@@ -25,7 +25,7 @@ NESTED_SHEAR = "nested_shear_n128" # fixed three-level/two-region shear preset
SHEAR_NESTED_SHA256 = "fa6cfe87fb4df8c6d732c637c885276833c81973b950c7724d734f8fc350bcb0"
TWIN_SHEAR = "twin_shear_n128" # depth-2 twin: nested L0->L1 boxes without L2
SHEAR_TWIN_SHA256 = "1cbf37f18e89aea577581631c4565f51e68d22a3739b698816ef64acbf2b2bb4"
SHEAR_PROBES_SHA256 = "98ea8090ace48f04b83dfb015db10e681e414e57eb748b34c0fbb90fb790d13b" # signed interface-probe mechanism diagnostic
SHEAR_PROBES_SHA256 = "53ba8af8ac9c8078c40f84488c7ade4c11ccc91dd1fc275ff806042e9af30166" # signed interface-probe mechanism diagnostic
def flow_functions(flow="taylor_green"):