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