// ISS-002 — what a side-panel hover highlights on the map (v0.15.0): a plane marker
// (+ its route leg if flying) or both endpoint airports of an open package. The shell
// owns this state and passes it to <Map>; panes report it via their onHover callback.
// ISS-022/025/027 (v0.22.0): any target carrying two ICAOs also makes the map draw the full
// great-circle trace between them — package hovers carry origin→dest, 'route' hovers (the
// Relocate panel) carry fromIcao→toIcao; a package hover may additionally name its plane so
// that plane's halo stays lit alongside the trace.

export type HoverTarget =
  | { kind: 'plane'; id: string }
  | { kind: 'package'; originIcao: string; destIcao: string; planeId?: string }
  | { kind: 'route'; fromIcao: string; toIcao: string };