- Flatten directory structure: remove barrel file, move files up to /jobs
- Remove .passthrough() from zPreviewOutput, zPaginationInfo, zJobsListResponse
- Align nullable/optional with OpenAPI spec (outputs_count now nullable)
- Remove big comment block sections
- Change extractWorkflow return type to unknown
- Move zWorkflowContainer schema to jobTypes.ts
- Add interface types to test helper functions
- Add fetchHistory offset test for priority calculation
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Co-Authored-By: Claude <noreply@anthropic.com>