Fix: Tile proxy for black globe + radio voicestats modal

- Globe was black because Radio Garden CDN (rg-tiles.b-cdn.net) returns
  403 without Referer: radio.garden header. Added server-side tile proxy
  /api/radio/tile/:z/:x/:y with in-memory cache (max 500 tiles).
- Added radio_voicestats SSE broadcast (every 5s) with voice ping,
  gateway ping, status, channel name, and connected-since timestamp.
- Added clickable "Verbunden" connection indicator in RadioTab bottom
  bar with live ping display and connection details modal (matching
  soundboard's existing modal pattern).

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

web/src/plugins/radio/RadioTab.tsx

@@ -48,6 +48,14 @@ interface Favorite {
   placeId: string;
 }
 
+interface VoiceStats {
+  voicePing: number | null;
+  gatewayPing: number;
+  status: string;
+  channelName: string | null;
+  connectedSince: string | null;
+}
+
 const THEMES = [
   { id: 'default', color: '#e67e22', label: 'Sunset' },
   { id: 'purple', color: '#9b59b6', label: 'Midnight' },
@@ -80,8 +88,11 @@ export default function RadioTab({ data }: { data: any }) {
   const [showFavorites, setShowFavorites] = useState(false);
   const [playingLoading, setPlayingLoading] = useState(false);
   const [volume, setVolume] = useState(0.5);
+  const [voiceStats, setVoiceStats] = useState<VoiceStats | null>(null);
+  const [showConnModal, setShowConnModal] = useState(false);
   const searchTimeout = useRef<ReturnType<typeof setTimeout>>(undefined);
   const volumeTimeout = useRef<ReturnType<typeof setTimeout>>(undefined);
+  const selectedGuildRef = useRef(selectedGuild);
 
   // ── Fetch initial data ──
   useEffect(() => {
@@ -102,9 +113,12 @@ export default function RadioTab({ data }: { data: any }) {
     fetch('/api/radio/favorites').then(r => r.json()).then(setFavorites).catch(console.error);
   }, []);
 
+  // Keep selectedGuildRef in sync
+  useEffect(() => { selectedGuildRef.current = selectedGuild; }, [selectedGuild]);
+
   // ── Handle SSE data ──
   useEffect(() => {
-    if (data?.guildId && 'playing' in data) {
+    if (data?.guildId && 'playing' in data && data.type !== 'radio_voicestats') {
       // Per-guild SSE event (broadcastState): playing is single NowPlaying | null
       setNowPlaying(prev => {
         if (data.playing) {
@@ -114,7 +128,7 @@ export default function RadioTab({ data }: { data: any }) {
         delete next[data.guildId];
         return next;
       });
-    } else if (data?.playing) {
+    } else if (data?.playing && !data?.guildId) {
       // Snapshot: playing is Record<string, NowPlaying>
       setNowPlaying(data.playing);
     }
@@ -126,6 +140,16 @@ export default function RadioTab({ data }: { data: any }) {
     if (data?.volume != null && data?.guildId === selectedGuild) {
       setVolume(data.volume);
     }
+    // Voice stats
+    if (data?.type === 'radio_voicestats' && data.guildId === selectedGuildRef.current) {
+      setVoiceStats({
+        voicePing: data.voicePing,
+        gatewayPing: data.gatewayPing,
+        status: data.status,
+        channelName: data.channelName,
+        connectedSince: data.connectedSince,
+      });
+    }
   }, [data, selectedGuild]);
 
   // ── Theme persist + update globe colors ──
@@ -589,6 +613,13 @@ export default function RadioTab({ data }: { data: any }) {
               <span className="radio-volume-val">{Math.round(volume * 100)}%</span>
             </div>
             <span className="radio-np-ch">{'\u{1F50A}'} {currentPlaying.channelName}</span>
+            <div className="radio-conn" onClick={() => setShowConnModal(true)} title="Verbindungsdetails">
+              <span className="radio-conn-dot" />
+              Verbunden
+              {voiceStats?.voicePing != null && (
+                <span className="radio-conn-ping">{voiceStats.voicePing}ms</span>
+              )}
+            </div>
             <button className="radio-btn-stop" onClick={handleStop}>{'\u23F9'} Stop</button>
           </div>
         )}
@@ -598,6 +629,64 @@ export default function RadioTab({ data }: { data: any }) {
       <div className="radio-counter">
         {'\u{1F4FB}'} {places.length.toLocaleString('de-DE')} Sender weltweit
       </div>
+
+      {/* ── Connection Details Modal ── */}
+      {showConnModal && voiceStats && (() => {
+        const uptimeSec = voiceStats.connectedSince
+          ? Math.floor((Date.now() - new Date(voiceStats.connectedSince).getTime()) / 1000)
+          : 0;
+        const h = Math.floor(uptimeSec / 3600);
+        const m = Math.floor((uptimeSec % 3600) / 60);
+        const s = uptimeSec % 60;
+        const uptimeStr = h > 0
+          ? `${h}h ${String(m).padStart(2, '0')}m ${String(s).padStart(2, '0')}s`
+          : m > 0
+            ? `${m}m ${String(s).padStart(2, '0')}s`
+            : `${s}s`;
+        const pingColor = (ms: number | null) =>
+          ms == null ? 'var(--text-faint)' : ms < 80 ? 'var(--success)' : ms < 150 ? '#f0a830' : '#e04040';
+        return (
+          <div className="radio-modal-overlay" onClick={() => setShowConnModal(false)}>
+            <div className="radio-modal" onClick={e => e.stopPropagation()}>
+              <div className="radio-modal-header">
+                <span>{'\u{1F4E1}'}</span>
+                <span>Verbindungsdetails</span>
+                <button className="radio-modal-close" onClick={() => setShowConnModal(false)}>{'\u2715'}</button>
+              </div>
+              <div className="radio-modal-body">
+                <div className="radio-modal-stat">
+                  <span className="radio-modal-label">Voice Ping</span>
+                  <span className="radio-modal-value">
+                    <span className="radio-modal-dot" style={{ background: pingColor(voiceStats.voicePing) }} />
+                    {voiceStats.voicePing != null ? `${voiceStats.voicePing} ms` : '---'}
+                  </span>
+                </div>
+                <div className="radio-modal-stat">
+                  <span className="radio-modal-label">Gateway Ping</span>
+                  <span className="radio-modal-value">
+                    <span className="radio-modal-dot" style={{ background: pingColor(voiceStats.gatewayPing) }} />
+                    {voiceStats.gatewayPing >= 0 ? `${voiceStats.gatewayPing} ms` : '---'}
+                  </span>
+                </div>
+                <div className="radio-modal-stat">
+                  <span className="radio-modal-label">Status</span>
+                  <span className="radio-modal-value" style={{ color: voiceStats.status === 'ready' ? 'var(--success)' : '#f0a830' }}>
+                    {voiceStats.status === 'ready' ? 'Verbunden' : voiceStats.status}
+                  </span>
+                </div>
+                <div className="radio-modal-stat">
+                  <span className="radio-modal-label">Kanal</span>
+                  <span className="radio-modal-value">{voiceStats.channelName || '---'}</span>
+                </div>
+                <div className="radio-modal-stat">
+                  <span className="radio-modal-label">Verbunden seit</span>
+                  <span className="radio-modal-value">{uptimeStr}</span>
+                </div>
+              </div>
+            </div>
+          </div>
+        );
+      })()}
     </div>
   );
 }