fix(tools): exclude unknown altitude from requested aircraft bands (#1115)

aircraft_in_area compared a nullable altitude, so a contact with neither barometric nor geometric altitude matched max_altitude_m as though it were at zero. Require a reported finite altitude only when a band is requested; unfiltered queries keep the contact.

src/tools/queries/aviation.js

@@ -111,6 +111,8 @@ export const aircraftInArea = defineTool({
         (record) =>
           areaContains(area, { lat: record.latitude, lon: record.longitude }) &&
           !(args.airborne_only && record.onGround) &&
+          ((args.min_altitude_m == null && args.max_altitude_m == null) ||
+            Number.isFinite(altitude(record))) &&
           (args.min_altitude_m == null ||
             altitude(record) >= args.min_altitude_m) &&
           (args.max_altitude_m == null ||