fix: teamsbot SSE events - chatSendFailed und error handling im UI

Made-with: Cursor

src/api/teamsbotApi.ts

@@ -173,7 +173,7 @@ export interface MfaChallengeEvent {
 
 // SSE Event Types
 export interface TeamsbotSSEEvent {
-  type: 'transcript' | 'botResponse' | 'analysis' | 'suggestedResponse' | 'statusChange' | 'error' | 'ping' | 'sessionState' | 'ttsDeliveryStatus' | 'mfaChallenge' | 'mfaResolved';
+  type: 'transcript' | 'botResponse' | 'analysis' | 'suggestedResponse' | 'statusChange' | 'error' | 'ping' | 'sessionState' | 'ttsDeliveryStatus' | 'mfaChallenge' | 'mfaResolved' | 'chatSendFailed';
   data: any;
   timestamp?: string;
 }

src/pages/views/teamsbot/TeamsbotSessionView.tsx

@@ -166,6 +166,30 @@ export const TeamsbotSessionView: React.FC = () => {
             break;
           }
 
+          case 'chatSendFailed': {
+            const failData = sseEvent.data || {};
+            const failMsg = `Chat-Nachricht konnte nicht gesendet werden: ${failData.reason || 'unbekannt'}`;
+            _dlog('CHAT-FAIL', failMsg);
+            setTtsStatusEvents((prev) => [
+              ...prev.slice(-24),
+              {
+                status: 'chat_failed',
+                message: failMsg,
+                hasWebSocket: false,
+                timestamp: failData.timestamp || new Date().toISOString(),
+              },
+            ]);
+            break;
+          }
+
+          case 'error': {
+            const errData = sseEvent.data || {};
+            const errMsg = errData.message || 'Unbekannter Fehler';
+            _dlog('ERROR', errMsg);
+            setError(errMsg);
+            break;
+          }
+
           case 'suggestedResponse':
             break;