Switch radio globe imagery to NASA Blue Marble

web/src/plugins/radio/RadioTab.tsx

@@ -201,15 +201,11 @@ export default function RadioTab({ data }: { data: any }) {
     // Read accent color from theme
     const initStyle = getComputedStyle(containerRef.current.parentElement!);
     const initRgb = initStyle.getPropertyValue('--accent-rgb').trim() || '230, 126, 34';
-    const initAccent = initStyle.getPropertyValue('--accent').trim() || '#e67e22';
-
     const globe = new Globe(containerRef.current)
       .backgroundColor('rgba(0,0,0,0)')
       .atmosphereColor(`rgb(${initRgb})`)
       .atmosphereAltitude(0.12)
-      .globeImageUrl('/earth-night.jpg')
-      .globeTileEngineUrl((x: number, y: number, z: number) => `/api/radio/tile/${z}/${x}/${y}`)
-      .globeTileEngineMaxLevel(9)
+      .globeImageUrl('/nasa-blue-marble.jpg')
       .pointsData(places)
       // Radio Garden geo format: [lng, lat]
       .pointLat((d: any) => d.geo[1])
@@ -615,6 +611,14 @@ export default function RadioTab({ data }: { data: any }) {
         <div className="radio-counter">
           {'\u{1F4FB}'} {places.length.toLocaleString('de-DE')} Sender weltweit
         </div>
+        <a
+          className="radio-attribution"
+          href="https://science.nasa.gov/earth/earth-observatory/blue-marble-next-generation/"
+          target="_blank"
+          rel="noreferrer"
+        >
+          Imagery © NASA Blue Marble
+        </a>
       </div>
 
       {/* ── Connection Details Modal ── */}