MVP Demo Trace Acceptance Evidence

Evidence

Source	Evidence	Conclusion	Reported
`DiagnosisSessionRepository`	Existing `findBySessionId(String)` query	Trace can locate the session without new repository methods	Yes
`AgentStepRepository`	Existing `findBySessionIdOrderByStepIndex(String)` query	Agent steps can be returned in execution order	Yes
`ToolInvocationRepository`	Existing `findBySessionIdOrderByIdAsc(String)` query	Tool evidence can be returned in persisted order	Yes
`GlobalExceptionHandler`	Handles `SessionNotFoundException` as HTTP 404 with `Result.error(404, ...)`	Missing trace can reuse existing error contract	Yes
`mvn -q "-Dtest=DiagnosisTraceServiceTest" test`	Command passed	Trace aggregation behavior is covered offline	Yes
`mvn -q -DskipTests compile`	Command passed	New code compiles with the full project	Yes
`gitnexus detect-changes --repo SuperBizAgent-java`	Command completed with `No changes detected` and line-ending warnings	Required GitNexus check ran; output likely does not capture newly added files	Yes

Conclusion: No database migration is required.
- Evidence: All trace fields are available from existing diagnosis_session, agent_step, and tool_invocation entities.
- Risk: Response shape becomes a new API contract.
- User confirmation: Not required; additive L3 API recorded in OpenSpec.
Conclusion: Trace aggregation can be tested without external infrastructure.
- Evidence: DiagnosisTraceServiceTest uses mocked repositories and an ObjectMapper.
- Risk: Runtime integration still depends on configured infrastructure.
- User confirmation: Not required; limitation recorded in acceptance docs.