Add lightweight action trace artifacts#748
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Constraint: Keep tracing dependency-free and opt-in so normal MCP automation behavior is unchanged. Rejected: Adopt Playwright trace or OpenTelemetry SDK directly | too heavy for the first OpenSafari-native artifact contract. Confidence: high Scope-risk: narrow Directive: Extend exporters only after the JSON schema proves useful in live simulator failures. Tested: npm test -- --runTestsByPath tests/unit/action-trace.test.ts; npm run lint -- --quiet src/observability/action-trace.ts src/orchestration/scenario-runner.ts tests/unit/action-trace.test.ts Not-tested: Live simulator trace artifact capture.
This was referenced May 13, 2026
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Summary
Closes #744.
Direction/scope review
TestScenario.tracePath; default scenario behavior is unchanged.Verification
npm test -- --runTestsByPath tests/unit/action-trace.test.tsnpm run lint -- --quiet src/observability/action-trace.ts src/orchestration/scenario-runner.ts tests/unit/action-trace.test.tsLive validation after merge
tracePathand confirm the JSON records action, device, status, timeout/error, and artifact metadata.tracePathand confirm no trace artifact is emitted.