10. Dropped the "no body data" fallback string in the picker panel — the
generator always writes entry["bodies"], so the fallback was dead. Use
the "—" convention the rest of the panel already follows.
12. Removed the autoload parse-order comment from AtlasPanel (it is
scene-instanced, not an autoload, so the rule does not apply), and
collapsed _build_heightmap_viewer to a direct AtlasViewer.new() —
mirroring the rest of the file rather than dancing around a risk that
is not real for this class.
13. AtlasMarkerOverlay._draw_cities now compares hover/selection by a
stable _city_key() (name → city_id → pos → hash) instead of
Dictionary.==, which was O(fields) per city per redraw. Preps the
renderer for much larger city counts without a rewrite.
14. Orbital click/draw handlers guard against missing body_id /
station_id by reading through str(dict.get(..., "")) and skipping
empty ids. Matches the defensive style already used for parent_body_id
and keeps a NULL id from crashing _draw_bodies / _handle_orbital_click.