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ForegroundApplicationObserver

Struct ForegroundApplicationObserver 

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pub struct ForegroundApplicationObserver { /* private fields */ }
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RAII owner of the current platform’s foreground-application observer.

Dropping this value synchronously unregisters the native observer and stops any worker it owns.

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impl ForegroundApplicationObserver

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pub fn check_health(&self) -> Result<(), ForegroundApplicationObserverError>

Return an error if a fallible observer worker has stopped delivering.

Native macOS registration has no independently observable worker health, so it relies on the consumer’s idle recovery read.

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