Enforce deterministic group ordering across entropy pipeline and fix ethyl-acetate regression test topology mismatch #57

Job	Run time
Pre-commit	58s
Discover regression systems	41s
Unit (windows-2025, 3.12)	2m 5s
Unit (macos-15, 3.12)	56s
Unit (ubuntu-24.04, 3.13)	47s
Unit (macos-15, 3.13)	1m 2s
Unit (windows-2025, 3.13)	1m 58s
Unit (macos-15, 3.14)	50s
Unit (windows-2025, 3.14)	1m 46s
Unit (ubuntu-24.04, 3.12)	1m 1s
Unit (ubuntu-24.04, 3.14)	1m 2s
Coverage	1m 13s
Docs	1m 5s
Regression (fast) • ethyl-acetate	3m 58s
Regression (fast) • methanol	2m 17s
Regression (fast) • octonol	6m 38s
Regression (fast) • benzene	4m 45s
Regression (fast) • benzaldehyde	5m 43s
Regression (fast) • methane	2m 26s
Regression (fast) • water	2m 8s
Regression (fast) • dna	2m 21s
Regression (fast) • cyclohexane	6m 7s
	51m 47s

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