feat(app): service_status Banner oben in ChatScreen

App-Pendant zum Diagnostic-Banner. Wenn die Gamebox-Bridges (F5-TTS /
Whisper) ihren Lade-Status broadcasten, zeigt die App oben unter der
Verbindungs-Statusleiste ein farbiges Banner:
  Gelb  = irgendwas laedt   (NICHT wegtippbar)
  Gruen = alles bereit      (tippbar zum Schliessen)
  Rot   = Fehler

Banner aggregiert beide Services in einer Kachel. Dismiss-State wird
zurueckgesetzt sobald irgendein Service wieder in 'loading' geht
(z.B. Modell-Wechsel via Diagnostic).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

android/src/screens/ChatScreen.tsx

@@ -108,6 +108,9 @@ const ChatScreen: React.FC = () => {
   const [searchVisible, setSearchVisible] = useState(false);
   const [pendingAttachments, setPendingAttachments] = useState<{file: any, isPhoto: boolean}[]>([]);
   const [agentActivity, setAgentActivity] = useState<{activity: string, tool: string}>({activity: 'idle', tool: ''});
+  // Service-Status (Gamebox: F5-TTS / Whisper Lade-Status) + Banner-Sichtbarkeit
+  const [serviceStatus, setServiceStatus] = useState<Record<string, {state: string, model?: string, loadSeconds?: number, error?: string}>>({});
+  const [serviceBannerDismissed, setServiceBannerDismissed] = useState(false);
   // Gerätelokale TTS-Config: globaler Toggle (aus Settings) + temporäres Muten (Mund-Button)
   const [ttsDeviceEnabled, setTtsDeviceEnabled] = useState(true);
   const [ttsMuted, setTtsMuted] = useState(false);
@@ -351,6 +354,24 @@ const ChatScreen: React.FC = () => {
           ToastAndroid.show(`Stimme "${v || 'Standard'}" bereit`, ToastAndroid.SHORT);
         }
       }
+
+      // Gamebox-Bridges (f5tts/whisper) melden Lade-Status — Banner oben
+      if (message.type === ('service_status' as any)) {
+        const p = message.payload as any;
+        const svc = (p?.service as string) || '';
+        if (!svc) return;
+        setServiceStatus(prev => ({
+          ...prev,
+          [svc]: {
+            state: (p?.state as string) || 'unknown',
+            model: p?.model as string | undefined,
+            loadSeconds: p?.loadSeconds as number | undefined,
+            error: p?.error as string | undefined,
+          },
+        }));
+        // Bei neuer Loading-Phase Banner wieder aktivieren
+        if (p?.state === 'loading') setServiceBannerDismissed(false);
+      }
     });
 
     const unsubState = rvs.onStateChange((state) => {
@@ -764,6 +785,49 @@ const ChatScreen: React.FC = () => {
         </TouchableOpacity>
       </View>
 
+      {/* Service-Status Banner (Gamebox: F5-TTS / Whisper Lade-Status) */}
+      {(() => {
+        const entries = Object.entries(serviceStatus);
+        if (entries.length === 0 || serviceBannerDismissed) return null;
+        const anyLoading = entries.some(([, v]) => v.state === 'loading');
+        const anyError = entries.some(([, v]) => v.state === 'error');
+        const allReady = !anyLoading && !anyError && entries.every(([, v]) => v.state === 'ready');
+        const bg = anyError ? '#3A1F1F' : anyLoading ? '#3A331F' : '#1F3A2A';
+        const border = anyError ? '#FF3B30' : anyLoading ? '#FFD60A' : '#34C759';
+        const labels: Record<string, string> = { f5tts: 'F5-TTS', whisper: 'Whisper STT' };
+        return (
+          <TouchableOpacity
+            activeOpacity={allReady ? 0.6 : 1.0}
+            onPress={() => { if (allReady) setServiceBannerDismissed(true); }}
+            style={[styles.serviceBanner, { backgroundColor: bg, borderColor: border }]}
+          >
+            {entries.map(([svc, info]) => {
+              let icon = '\u23F3', text = '';
+              if (info.state === 'loading') {
+                text = `${labels[svc] || svc}: laedt${info.model ? ' ' + info.model : ''}...`;
+              } else if (info.state === 'ready') {
+                icon = '\u2705';
+                const sec = info.loadSeconds ? ` (${info.loadSeconds.toFixed(1)}s)` : '';
+                text = `${labels[svc] || svc}: bereit${info.model ? ' ' + info.model : ''}${sec}`;
+              } else if (info.state === 'error') {
+                icon = '\u274C';
+                text = `${labels[svc] || svc}: Fehler ${info.error || ''}`;
+              } else {
+                text = `${labels[svc] || svc}: ${info.state}`;
+              }
+              return (
+                <Text key={svc} style={styles.serviceBannerLine}>
+                  {icon}  {text}
+                </Text>
+              );
+            })}
+            <Text style={styles.serviceBannerHint}>
+              {allReady ? 'Tippen zum Schliessen' : 'Bitte warten...'}
+            </Text>
+          </TouchableOpacity>
+        );
+      })()}
+
       {/* Suchleiste */}
       {searchVisible && (
         <View style={styles.searchBar}>
@@ -978,6 +1042,25 @@ const styles = StyleSheet.create({
     color: '#8888AA',
     fontSize: 12,
   },
+  serviceBanner: {
+    paddingVertical: 8,
+    paddingHorizontal: 12,
+    borderTopWidth: 0,
+    borderBottomWidth: 1,
+    borderLeftWidth: 0,
+    borderRightWidth: 0,
+  },
+  serviceBannerLine: {
+    color: '#FFFFFF',
+    fontSize: 12,
+    lineHeight: 18,
+  },
+  serviceBannerHint: {
+    color: '#AAAACC',
+    fontSize: 10,
+    marginTop: 2,
+    fontStyle: 'italic',
+  },
   messageList: {
     padding: 12,
     paddingBottom: 8,