feat: Soundboard Plugin + Radio Globe Fixes

- Add Soundboard plugin (full Jukebox port): server + frontend + CSS
- Fix Radio Globe: swap geo coords (API returns [lng,lat] not [lat,lng])
- Fix Radio stations showing "Unbekannt": use item.page.title + fix channel ID regex
- Add DirectMessages + MessageContent intents for DM commands
- Register SoundboardTab in App.tsx with scoped theme/card-size CSS vars

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

web/src/plugins/radio/RadioTab.tsx

@@ -100,7 +100,8 @@ export default function RadioTab({ data }: { data: any }) {
     setStationsLoading(true);
     setStations([]);
     if (globeRef.current) {
-      globeRef.current.pointOfView({ lat: point.geo[0], lng: point.geo[1], altitude: 0.4 }, 800);
+      // Radio Garden geo format: [lng, lat]
+      globeRef.current.pointOfView({ lat: point.geo[1], lng: point.geo[0], altitude: 0.4 }, 800);
     }
     fetch(`/api/radio/place/${point.id}/channels`)
       .then(r => r.json())
@@ -123,8 +124,9 @@ export default function RadioTab({ data }: { data: any }) {
       .atmosphereColor('rgba(230, 126, 34, 0.25)')
       .atmosphereAltitude(0.12)
       .pointsData(places)
-      .pointLat((d: any) => d.geo[0])
-      .pointLng((d: any) => d.geo[1])
+      // Radio Garden geo format: [lng, lat]
+      .pointLat((d: any) => d.geo[1])
+      .pointLng((d: any) => d.geo[0])
       .pointColor(() => 'rgba(230, 126, 34, 0.85)')
       .pointRadius((d: any) => Math.max(0.12, Math.min(0.45, 0.06 + (d.size ?? 1) * 0.005)))
       .pointAltitude(0.003)