import re

file_path = 'server/src/app/services/user_agent_knowledge.py'
with open(file_path, 'r', encoding='utf-8') as f:
    content = f.read()

content = re.sub(
    r'(def _build_fast_knowledge_answer\([\s\S]*?-> str \| None:\n)',
    r'\1        return None\n',
    content
)

content = re.sub(
    r'heading_text = f" > \{heading\}" if heading else ""',
    r'if "表格行级检索线索" in heading:\n                heading = heading.replace("表格行级检索线索", "").strip(" >")\n            heading_text = f"（{heading}）" if heading else ""\n            item_title = item.get("title") or title',
    content
)

content = re.sub(
    r'evidence_lines\.append\(f"- 《\{item\.get\(\'title\'\) or title\}》\{heading_text\}：\{summary\}\\n\{preview\}"\)',
    r'evidence_lines.append(f"- **《{item_title}》** {heading_text}\\n  {summary}\\n{preview}")',
    content
)

content = re.sub(
    r'evidence_lines\.append\(f"- 《\{item\.get\(\'title\'\) or title\}》\{heading_text\}：\\n\{rendered\}"\)',
    r'evidence_lines.append(f"- **《{item_title}》** {heading_text}\\n{rendered}")',
    content
)

content = re.sub(
    r'evidence_lines\.append\(f"- 《\{item\.get\(\'title\'\) or title\}》\{heading_text\}：\{rendered\}"\)',
    r'evidence_lines.append(f"- **《{item_title}》** {heading_text}\\n  {rendered}")',
    content
)

content = re.sub(
    r'evidence_lines\.append\(f"- 《\{item_title\}》：\{excerpt\}"\)',
    r'evidence_lines.append(f"- **《{item_title}》**：{excerpt}")',
    content
)

with open(file_path, 'w', encoding='utf-8') as f:
    f.write(content)
print('Done.')