- Replace unquoted heredoc (shell-injection path) with a temp file: the
shell loop now appends tab-separated filename/score lines to a temp
file, which is passed as a plain path argument to the Python manifest-
rewrite block. Python reads only file contents, never executes shell-
expanded strings.
- Add early abort on fitness.sh exit code 2 (infra error: Anvil down,
missing tool). Iterating past an infra failure produces no useful
results; aborting immediately surfaces the real problem.
- Remove unused `os` import from the manifest-rewrite Python block.
- Fix inaccurate comment in evolve.sh --diverse-seeds sampling: the pool
sampler does a flat random shuffle with no fitness weighting; null-
fitness seeds are not "treated as 0" — they are sampled with equal
probability to any other seed.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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