Code review identified a latent false-positive flake risk: physics
path clamps fx = localX/24 to (CellsPerSide - 0.001f) = 7.999, which
corresponds to localX <= 191.976. With samples up to 191.999f,
physics computes Z at the clamped position while the mesh sampler
uses the actual position — a difference of up to 23 mm at the upper
edge, which on a steep slope would falsely trip the 1 mm sentinel.
Tighten upper bound to 191.975f (strictly below the clamp boundary)
so both oracles compute Z at the same (cellX, tx). Also restored the
"worst-case from SplitFormulaDivergenceTest" inline comment for
landblock 0x4D96 per code review suggestion #3.
Test still passes: 10/10 landblocks, 1000 samples, max |delta|
= 0.0153 mm (previously 0.0305 mm — confirms the prior worst-case
was indeed at the boundary).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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