fix: getExecutionHistory changes

[vnaren23]

Fixes #265

[sonarqubecloud]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[claude]

Review findings — 4 new inline comments posted:

1. transform-completeness assertions missing (process-instances.test.ts:242) — camelCase values are tested but original PascalCase fields are not verified absent. Violates the convention documented in agent_docs/rules.md (see assets.test.ts:94, queues.test.ts:88 for the pattern).

2. spans-API assertion passes by coincidence (process-instances.test.ts:231) — the mock instanceId equals the input instanceId, so the test never proves the service extracts the trace ID from the element-executions response.

3. missing JSDoc on createMockElementExecutionsResponse (maestro.ts:98) — every other factory in this file has one.

4. missing JSDoc on createMockTraceSpan (maestro.ts:133) — same.