- listen(): capture `task` as local `t` before the Sendable receive closure
so the @MainActor-isolated property isn't referenced inside a Sendable context
- startPing(): dispatch to @MainActor inside the timer block before accessing `task`
- scheduleReconnect(): capture `self` weakly in the reconnect Task
XcodeGen regenerated to include BackgroundRefreshManager.swift in the project.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
760e6a121c