airliner mesh is generated in-repo: tools/plane_gen.py writes vendor/plane3d.js (480 tris, CC0, same unit extent as the old Grab3D derivative); attribution updated

background.html

@@ -1623,8 +1623,6 @@ window.weatherThemes = {
                 lines.push('Terrain: Copernicus DEM via Mapzen Terrarium');
                 if (t.carLights !== false || t.cityLights !== false) lines.push('Roads: \u00a9 OpenStreetMap contributors (ODbL)');
             }
-            var fc = cfg.flights;
-            if (!fc || fc.enabled !== false) lines.push('Airliner model: Grab3D (CC0)');
             lines.push('Stars: Yale Bright Star Catalogue');
             lines.push('Weather: Open-Meteo');
             el.innerHTML = lines.join('<br>');