evidence-auditor

Use when `paper-review` needs a claim-by-claim evidence gap report grounded in an extracted claim ledger. **Trigger**: evidence audit, missing evidence, unsupported claims, 审稿证据审计, 证据缺口. **Use when**: `paper-review` 流程中，需要逐条检查 claim 的证据链、缺 baseline、评测薄弱点。 **Skip if**: 缺少 claims 输入（例如还没有 `output/CLAI