政务办事指南巡检插件 — 检测漏项/语义/逻辑/格式错误，输出合规审计报告，516测试全通过，v3.8.1新城市白名单补全+网办深度枚举配置化+表格下载实质内容豁免

Verifiable research-report engine for DeepSeek Harness: content-addressed evidence ledger (claim-snapshot binding, tamper-evident) plus versioned sealed reports with per-claim verification verdicts and a manifest-sealed directory.