Upstream merge Dec 22, 2025 #19

Job	Run time
Test Suite (ubuntu-latest, stable)	33s
Test Suite (macOS-latest, stable)	18s
Test Suite (windows-latest, stable)	31s
Check (ubuntu-latest, stable)	15s
Rustfmt	15s
Clippy	17s
Check (windows-latest, stable)	20s
Check (macOS-latest, stable)	18s
	2m 47s

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