{"case_id":"VISITOR-RAG-FALLBACK-001","kind":"rag_fallback","agent":"visitor","layer":"l0","rag_context":"[来源: faq-open-account | 片段 1]\n开户需要有效身份证件、本人银行卡，并完成实名认证。","expected":{"present":true,"contains":"有效身份证件"}}
{"case_id":"VISITOR-RAG-FALLBACK-002","kind":"rag_fallback","agent":"visitor","layer":"l0","rag_context":"","expected":{"present":false}}
{"case_id":"VISITOR-RAG-FALLBACK-003","kind":"rag_fallback","agent":"visitor","layer":"l0","rag_context":"[来源: faq-open-account | 片段 1]\n太短","expected":{"present":false}}