Stabilize CI test runs with deterministic environment settings #62

Job	Run time
Discover regression systems	44s
Pre-commit	2m 33s
Unit (macos-15, 3.13)	53s
Unit (ubuntu-24.04, 3.14)	56s
Unit (windows-2025, 3.12)	2m 1s
Unit (macos-15, 3.12)	1m 5s
Unit (macos-15, 3.14)	49s
Unit (windows-2025, 3.13)	1m 26s
Unit (windows-2025, 3.14)	2m 0s
Unit (ubuntu-24.04, 3.12)	53s
Unit (ubuntu-24.04, 3.13)	49s
Docs	1m 0s
Regression (fast) • benzaldehyde	5m 44s
Regression (fast) • ethyl-acetate	4m 31s
Regression (fast) • cyclohexane	5m 12s
Coverage	1m 3s
Regression (fast) • dna	2m 13s
Regression (fast) • octonol	6m 11s
Regression (fast) • methane	1m 59s
Regression (fast) • methanol	2m 15s
Regression (fast) • water	2m 10s
Regression (fast) • benzene	4m 3s
	50m 30s

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