test: JAX Matern-regularization parity assertion (guards PyAutoArray#386)#70
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Regression guard for the release-validation Matern crash (PyAutoArray #385): np-vs-JAX parity of the Matern regularization matrix (matern_cov_matrix_from + inv_via_cholesky + MaternKernel.regularization_matrix_from), jitted, at nu=0.5 and nu=1.7 (continuous free prior). Lives in jax_assertions/, not test_autoarray (library unit tests are NumPy-only). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01TDCsgNCXacXqiWAPTswWCt
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Summary
Regression guard for the Matern-kernel JAX crash fixed in PyAutoArray#386 (release-validation run
29266305445). Addsscripts/jax_assertions/matern_regularization.py: builds theMaternKernelregularization matrix withxp=npandxp=jnp(jitted) and asserts parity, exercising the tfpbessel_kvepath that was crashing. Coversnu=0.5andnu=1.7(nu is a continuousUniform(0.5,5.5)prior).Belongs here, not in
test_autoarray/— library unit tests are NumPy-only by convention.Library-first gate
Merge after PyAutoArray#386 (the dependency-pin fix). Verified passing against that branch.
🤖 Generated with Claude Code
https://claude.ai/code/session_01TDCsgNCXacXqiWAPTswWCt