---
id: component/parallel
name: Implement <Parallel> ujsx component
status: completed
depends_on:
  - setup/project-init
scope: single
risk: trivial
impact: component
level: implementation
---

## Description

Implement the `Parallel` ujsx component function. Structural container where all children execute simultaneously with no inter-child edges.

## Acceptance Criteria

- [ ] `src/component/parallel.ts` exports `Parallel` component function
- [ ] `Parallel` produces `UElement` with `type: "parallel"`
- [ ] Props: optional `id: string`, optional `maxConcurrency: number`
- [ ] `maxConcurrency` is a runtime scheduling hint, not a structural constraint (not encoded in DAG)
- [ ] Valid children: Operation, Sequential, Parallel, Conditional, Map
- [ ] Re-exported from `src/component/index.ts`
- [ ] Unit tests: correct UElement shape, maxConcurrency prop preserved

## References

- docs/architecture/workflow-templates.md — Parallel component, maxConcurrency semantics

## Notes

> To be filled by implementation agent

## Summary

> To be filled on completion