/**
 * Create Task API Step
 *
 * Handles POST /tasks with multipart/form-data
 * - Generates unique sessionId
 * - Saves uploaded files to staging directory
 * - Initializes taskState with all steps PENDING
 * - Checks concurrency and sets QUEUED or PENDING status
 * - Emits event to trigger pipeline step
 *
 * @see Requirements 5.1, 5.2, 1.4, 1.7
 */

import { defineApiStep } from '@motia/core'
import { v4 as uuidv4