cdricms c670dda0a9 fix(apple): run the notification delegate on the main actor (iOS crash) ...

Tapping an approval notification while the app was backgrounded crashed on iOS
with "Call must be made on main thread". The UNUserNotificationCenterDelegate
methods are `async` and nonisolated, so their continuation resumes off the main
thread at the return point — where UIKit synchronously runs state-restoration /
snapshot work, tripping the main-thread assertion. (The empty iOS `didReceive`
body didn't matter; even an empty async method returns off-main.)

Isolate NotificationPresenter to `@MainActor` so the delegate returns on the main
thread. `@preconcurrency` on the UNUserNotificationCenterDelegate conformance is
required because those requirements are nonisolated with non-Sendable UN*
parameters, which strict concurrency won't otherwise let a main-actor type
witness. The macOS branch's now-redundant `await MainActor.run { … }` is dropped.

2026-07-31 12:46:05 +02:00

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