fix(diagnostic): [FILE: ...]-Marker aus chat_final rausfiltern

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

diagnostic/index.html

@@ -993,7 +993,12 @@
         }
 
         if (msg.type === 'chat_final') {
-          addChat('received', msg.text, 'chat:final');
+          // [FILE: /shared/uploads/aria_xxx.ext]-Marker aus dem Antworttext
+          // entfernen — die Datei kommt separat via file_from_aria.
+          // (Diagnostic empfaengt chat_final direkt vom Gateway, Bridge
+          // hat darum nicht filtern koennen.)
+          const cleaned = (msg.text || '').replace(/\[FILE:\s*\/shared\/uploads\/[^\]]+\]/gi, '').replace(/\n{3,}/g, '\n\n').trim();
+          addChat('received', cleaned, 'chat:final');
           return;
         }
         if (msg.type === 'file_from_aria') {