fix restore config

src/fgai/config.py

@@ -82,10 +82,13 @@ class ConfigStore:
             elif key == "threat_intel_provider" and value in {"auto", "abuseipdb", "virustotal"}:
                 current[key] = value
             elif key == "graylog_streams" and isinstance(value, list):
-                current[key] = [
+                streams = [
                     {"id": str(item.get("id", "")), "title": str(item.get("title", "")), "enabled": bool(item.get("enabled"))}
                     for item in value if isinstance(item, dict) and item.get("id")
                 ]
+                if not streams and current.get("graylog_streams"):
+                    continue
+                current[key] = streams
             elif key == "graylog_stream_profiles" and isinstance(value, list):
                 current[key] = [item for item in value if isinstance(item, dict) and item.get("stream_id")]
             elif isinstance(value, str):