fix(ConnectionManager): background reconnection on Android#12
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Two issues prevented auto-reconnect from working when the app was backgrounded: 1. connect() overwrote reconnection options set by enableAutoReconnect(), losing connectionOptions like autoConnect: true. Fixed by storing reconnect-specific options in a separate reconnectOptions field that survives connect() state replacement. 2. setTimeout(fn, 0) never fires in background because React Native's timer implementation uses Choreographer frame callbacks tied to VSYNC. Fixed by using Promise.resolve().then() (microtask) for zero-delay scheduling, which executes on the same event loop tick.
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Two issues prevented auto-reconnect from working when the app was backgrounded:
connect() overwrote reconnection options set by enableAutoReconnect(), losing connectionOptions like autoConnect: true. Fixed by storing reconnect-specific options in a separate reconnectOptions field that survives connect() state replacement.
setTimeout(fn, 0) never fires in background because React Native's timer implementation uses Choreographer frame callbacks tied to VSYNC. Fixed by using Promise.resolve().then() (microtask) for zero-delay scheduling, which executes on the same event loop tick.