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- """可选：从公开网络拉取简报，作为辩论的「考据附录」（模型仍以自身知识为主）。"""
- from __future__ import annotations
- from .ddg_search import duckduckgo_search_text
- from .wiki_tools import wiki_multiview
- def build_evidence_bundle(topic: str, *, max_chars: int = 5500) -> str:
- """
- 聚合维基多语种摘录 + 少量检索结果，失败时返回说明性短文本。
- """
- chunks: list[str] = []
- try:
- w = wiki_multiview(topic.strip())
- if len(w) > 4000:
- w = w[:4000] + "\n... [维基部分已截断]"
- chunks.append("【维基多语种摘录】\n" + w)
- except Exception as e: # pragma: no cover
- chunks.append(f"【维基】抓取失败：{e}")
- try:
- q = f"{topic.strip()} 历史 笔记 野史 争议 研究"
- chunks.append(duckduckgo_search_text(q, max_results=4, max_body_chars=600))
- except Exception as e: # pragma: no cover
- chunks.append(f"【检索】失败：{e}")
- text = "\n\n---\n\n".join(chunks)
- if len(text) > max_chars:
- text = text[:max_chars] + "\n... [总附录已截断]"
- return text
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