feat(demo): add interview quality audit

mvp/eval/cases/diagnosis-cases.json

@@ -17,6 +17,33 @@
     "expectedComposerStatuses": ["valid"],
     "forbiddenConfirmedClaimKeywords": ["数据库连接池"]
   },
+  {
+    "id": "prompt-gatekeeper-audit-closure",
+    "title": "Prompt and Gatekeeper audit closure",
+    "question": "确认 payment-service 当前是否存在 HighCPUUsage 告警，并检查审计元数据是否完整。",
+    "traceFixture": "prompt-gatekeeper-audit-closure-pass.json",
+    "expectedRootCauseKeywords": ["payment-service", "HighCPUUsage", "92%"],
+    "minKeywordMatches": 2,
+    "requiredEvidenceTools": ["query_metrics"],
+    "allowedVerdicts": ["PASS"],
+    "forbiddenAnswerKeywords": ["根因", "修复建议", "通常情况下"],
+    "requireV2AuditClosure": true,
+    "requireClaimChecks": true,
+    "requireComposerOutput": true,
+    "expectedGatekeeperStatuses": ["pass"],
+    "expectedGatekeeperRuleSetVersion": "gatekeeper-rules-v1",
+    "expectedComposerStatuses": ["valid"],
+    "forbiddenConfirmedClaimKeywords": ["数据库连接池"],
+    "requirePromptAudit": true,
+    "expectedPromptAuditVersion": "chat-prompts-v1",
+    "expectedPromptVersions": {
+      "chat_planner": "chat-planner-v1",
+      "chat_executor": "chat-executor-v2",
+      "chat_verifier": "chat-verifier-v2",
+      "chat_composer": "chat-composer-v1"
+    },
+    "requireGatekeeperRules": true
+  },
   {
     "id": "hikari-no-evidence-negative-observation",
     "title": "Hikari no-evidence negative observation",
@@ -124,6 +151,33 @@
     "expectedComposerStatuses": ["valid"],
     "forbiddenConfirmedClaimKeywords": ["主库故障"]
   },
+  {
+    "id": "audit-metadata-low-confid",
+    "title": "Audit metadata low confidence",
+    "question": "订单超时是否可以确认由数据库主库故障导致，并检查审计元数据是否完整？",
+    "traceFixture": "audit-metadata-low-confid.json",
+    "expectedRootCauseKeywords": ["超时", "证据"],
+    "minKeywordMatches": 2,
+    "requiredEvidenceTools": ["query_logs"],
+    "allowedVerdicts": ["LOW_CONFID"],
+    "forbiddenAnswerKeywords": ["已经确认"],
+    "requireV2AuditClosure": true,
+    "requireClaimChecks": true,
+    "requireComposerOutput": true,
+    "expectedGatekeeperStatuses": ["pass"],
+    "expectedGatekeeperRuleSetVersion": "gatekeeper-rules-v1",
+    "expectedComposerStatuses": ["valid"],
+    "forbiddenConfirmedClaimKeywords": ["主库故障"],
+    "requirePromptAudit": true,
+    "expectedPromptAuditVersion": "chat-prompts-v1",
+    "expectedPromptVersions": {
+      "chat_planner": "chat-planner-v1",
+      "chat_executor": "chat-executor-v2",
+      "chat_verifier": "chat-verifier-v2",
+      "chat_composer": "chat-composer-v1"
+    },
+    "requireGatekeeperRules": true
+  },
   {
     "id": "composer-fallback-no-raw-json",
     "title": "Composer fallback no raw JSON",