Firmware v20260514.205836

• New experimental RX-busy latch: ZephCore now tracks an in-progress reception across the full packet, so the transmitter won't step on a packet that's already being decoded.
• Improved CAD (Listen-Before-Talk) behavior: the radio re-enters listening mode faster between TX retries on busy channels, and a stuck channel-busy state recovers automatically instead of requiring a reset.
• updated default prefs to advert less and loop detect moderate