Function _extractive_fallback

agents/wiki-agent/retrieve/answer.py:99–116

(hits: List[Dict[str, Any]], error: str, response_language: str = "zh")

def _extractive_fallback(hits: List[Dict[str, Any]], error: str, response_language: str = "zh") -> str:
    if _normalize_response_language(response_language) == "en":
        lines = [
            "The current LLM is unavailable, so PaperFlow is returning local Wiki evidence snippets first.",
            f"Provider error: {error}",
            "",
        ]
    else:
        lines = [
            "当前 LLM 不可用，PaperFlow 先返回本地 Wiki 证据片段（local wiki snippets）。",
            f"Provider error: {error}",
            "",
        ]
    for index, hit in enumerate(hits[:5], start=1):
        lines.append(f"[{index}] {hit.get('title')} ({hit.get('node_type')})")
        lines.append(_snippet(hit, max_chars=280))
        lines.append("")
    return "\n".join(lines).strip()


def _merge_hits(