v1.1.15

Conservative Hub A1 telemetry cleanup. The latest runtime log confirms HA1 polling is active and SOC is coming from the real Hub A1 serial, but the field previously labeled HubA1BatterySoh reported an unlikely value. This release stops publishing that unverified HA1 SOH percentage while leaving SOC, voltage, switch state, detail rows, and the existing 60-second polling path in place.