docs(openspec): propose interview demo quality audit

devflow/projects/2026-07-09-interview-demo-quality-audit/evidence.md

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+# Evidence
+
+## Context Files Read
+
+- `devflow/index.md`
+- `devflow/glossary/CONTEXT.md`
+- `devflow/projects/2026-07-08-diagnosis-eval-demo-gatekeeper-closure/decisions.md`
+- `devflow/projects/2026-07-08-executor-composer-final-answer/decisions.md`
+- `mvp/architecture/current-mvp-architecture.md`
+- `mvp/architecture/agent-orchestration.md`
+- `mvp/architecture/executor-evidence-pipeline-refactor.md`
+- `mvp/architecture/harness-quality-gates.md`
+- `mvp/demo/README.md`
+- `mvp/demo/ten-minute-interview-demo.md`
+- `mvp/eval/README.md`
+- `mvp/eval/cases/diagnosis-cases.json`
+- `src/main/java/com/superbiz/agent/service/ChatService.java`
+- `src/main/java/com/superbiz/agent/service/ExecutorGatekeeperService.java`
+- `src/main/java/com/superbiz/agent/eval/DiagnosisTraceEvaluator.java`
+- `src/main/resources/gatekeeper/gatekeeper-rules.json`
+
+## Tooling Note
+
+The required `codebase-retrieval` and LSP tools were not exposed in this session. Impact analysis used `rg`, direct file reads, existing OpenSpec/devflow artifacts, and targeted tests instead.
+