"Config validator reports missing routes"

Problem: /atc_check reports missing cross-airport flight routes or taxi routes.

Cause: A configured airport, runway, surface, or LSIA gate does not have the matching entry in config/routes.lua or config/lsia_taxi.lua.

Solution: Read the exact missing key in the server console. Add the matching route using the existing file format, then run /atc_check again.

For custom locations, route keys can follow this format:

["LSIA_21__PILLBOX_HELI_H1"] = {
    vec3(...),
    vec3(...)
}