fix

src/main/java/com/knowledge/base/infrastructure/util/http/FilteredSseOutputAdapter.java

@@ -46,6 +46,11 @@ public class FilteredSseOutputAdapter implements WriterAdapter {
                 lastChunk.put("sources", original.get("sources"));
             }
 
+            if(original.containsKey("close")) {
+                filtered.put("close", original.get("close"));
+                lastChunk.put("close", original.get("close"));
+            }
+
             // 最后一条才合并 sources 输出
             if (Boolean.TRUE.equals(original.get("close"))) {
                 // 合并缓存中的 sources