容错处理

offline-backend-20260512/backend/packages/harness/deerflow/agents/ai_writing/nodes/researcher.py

@@ -140,6 +140,10 @@ async def researcher_node(state: AIWritingState, config: RunnableConfig) -> dict
         materials = sorted(raw_materials, key=lambda m: m.get("relevance_score", 0), reverse=True)[:_MAX_MATERIALS]
         summary = f"共搜索到{len(raw_materials)}条素材，精选{len(materials)}条"
 
+    # 空结果兜底：未检索到任何素材时给出明确文案，前端据此弹出「无数据继续」选项
+    if not materials:
+        summary = "未检索到相关素材，可重新搜索或在无素材的情况下继续写作"
+
     pkg = MaterialPackage(keywords=keywords, materials=materials, summary=summary)
 
     return {