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Release 1.1.1: wire the macOS updater; fix silent set_setting data loss #174

Job	Run time
Racket core (contract tests)	1m 55s
Contract preflight (i18n + release metadata)	4s
Windows host (WinRT build)	3m 54s
Linux host (GTK4 build)	1m 50s
macOS host (SwiftUI build)	3m 56s
	11m 39s