v1.1.12 - Use direct HA1 values over zero telemetry

This patch fixes the zero-value path after v1.1.11. The verified direct HA1 deviceRemoteSearch response can contain non-zero batSOC and power fields, while optional realtime/lastAlive endpoints may return zero placeholders. HA1 state mapping now prefers the first non-zero trusted HA1 value, so non-zero direct HA1 fields are not masked by zero optional telemetry. The FridgePower copy prevention from v1.1.11 and stale homeDevices guard from v1.1.9 remain in place.