toSitePlannerParams

Seed Site Planner params from a node (name + position) and, when a radio is connected, from its actual config: transmit frequency (from the primary channel), transmit power (dBm→W), and a receiver sensitivity derived from the modem preset. Antenna gain/height aren't in the device config, so they keep the planner's stock defaults.

Flavor-neutral: both the Google and F-Droid maps feed the same hosted Site Planner.