Azimuth Daemon 0.3.0 — riscv64

RISC-V 64-bit. Full features, regional frequency scanning (serial enumeration via sysfs).
No extra system libraries required.

Run:   ./azimuth-daemon --config <path/to/config.toml>
       (set `region = "US"` in config.toml, or pass --region US;
        AUTO uses the worldwide default scan plan)
Setup: ./azimuth-daemon --setup
Docs:  https://azimuth.day/docs/regions
