prompt: jax-grad-local-vs-ci-assertions (#260) — route, root cause, fix

[Jammy2211]

Registry state for the jax-grad-local-vs-ci-assertions task, from routing through to the shipped fix. Landing this so active.md on main reflects the task — an unmerged registry branch is what trips Lifecycle Drift (there is already an entry in active.md recording exactly that failure from a previous session).

Commits

• 544d095 — routed the task: prompt advanced draft/bug/autolens_workspace_test/ → active/, registered in active.md as workspace-dev, issue autolens_workspace_test#260 filed.
• ccf43b9 — root cause found; numpy hypothesis falsified.
• 2cc2a84 — reclassified workspace-dev → library-dev, fix branch recorded, two follow-ups filed.

What the task established

The reported "local jax_grad assertions fail but pass in CI" was not numpy 2.2.6 vs 2.4.6. lp.py is byte-identical across numpy 2.2.6 / 2.4.6 / 2.5.2 and across 1-core vs 4-core — the likelihood runs through JAX/XLA, so numpy was never in the causal path.

The actual cause is PyAutoArray.should_simulate being existence-only and asymmetric, so a dataset written by an earlier PYAUTO_SMALL_DATASETS=1 run is reused forever under full_datasets. CI clones fresh and can never hit it. All three reported failures reproduce exactly from a clean checkout — pixelization.py matches the original report to 11 significant figures, and regularization.py's tolerance vector matches exactly.

No tolerance change was warranted: all three assertions were correctly detecting an invalid dataset.

Outcome

• Fix: fix: regenerate datasets left on disk by a small-datasets run PyAutoArray#471 (imaging manifestation).
• Follow-ups filed: feat: stamp the small-datasets regime into FITS headers at the writer funnel PyAutoNerves#153 (regime stamp at the FITS writer funnel — the only discriminant that catches the silent interferometer case), bug: should_simulate rmtree's committed, gitignore-allowlisted datasets under PYAUTO_SMALL_DATASETS=1 PyAutoArray#470 (small-datasets branch rmtrees committed, allowlisted data).

dashboard.md / dashboard.html regenerated; lifecycle.py check passes.

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