Like SX1262 allows -9 dBm lowest, some allow lower but that probably isn't useful
- Add ADVERT_LAT and ADVERT_LON definitions for both repeater and sensor variants - Set MAX_NEIGHBOURS to 50 for improved network capacity - Fix repeater build source filter path to include entire directory
- platformio.ini: Build configuration for tiny relay variant - target.cpp/h: Hardware-specific implementation - variant.h: Variant identification header
