tools/make_test_sras.py writes small v6 files with per-angle-varying
geometry, distinct per-channel calibration, and deterministic waveform
content (predictable FFT peak per pixel, predictable DC mean per pixel).
tools/check_equivalence.py hashes DC/FFT/alignment outputs across
channels, angles, bg-sub, pad factors, and thresholds. It imports from
either the monolith or the split modules, so the same script captures
both sides of a refactor. Hashes canonicalise to native float64 so a
dtype or byte-order change that preserves values is not a false failure.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Thomas Ales