# Diagnosis Eval Harness Evidence

## Evidence

| Source | Evidence | Conclusion | Reported |
|---|---|---|---|
| `openspec/specs/evidence-trace-hardening/spec.md` | Defines stable evidence states and summary behavior | Evaluation can rely on trace semantics rather than ad hoc log parsing | Yes |
| `mvp/demo/README.md` | Documents an end-to-end demo flow with chat, trace, and feedback | Existing demo flow provides the runtime story, but not a reusable evaluation baseline | Yes |
| `DiagnosisTraceService` | Aggregates session, steps, tools, and self-evaluation | Trace response shape can be reused as evaluation input | Yes |
| `ToolTraceSummaryService` | Builds verifier-facing evidence summaries from persisted tool rows | Evaluator can check evidence coverage through persisted trace artifacts | Yes |