5dc086e35a
Concurrent job launches in create_root_files.py can start within the same wall-clock second, and minicalosim's default seed falls back to time(NULL) in that case — so two "independent" shards could silently get identical RNG state and produce byte-identical physics. Requires the companion MINICALOSIM_SEED env-var support in the minicalosim repo. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>