The decoding of the time between received edges into frame bits moves out
of Transceiver::handleReceive unchanged into decodePulse(), with the RTS
timings and the receive buffer type. It stays in IRAM on the ESP32 and is
now covered by native tests that feed it the edges sendFrame() produces
for 56 and 80-bit first frames and repeats, a glitch and a broken pulse.
handleReceive keeps the noise guard, the edge timing and the RX queue.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
