type: object
description: Processing task metadata
properties:
  flow:
    type: string
    description: Flow ID
    example: my-flow
  collection:
    type: string
    description: Collection identifier
    example: default
  status:
    type: string
    description: Processing status
    enum: [pending, processing, completed, failed]
    example: processing
  timestamp:
    type: string
    description: ISO timestamp
    format: date-time
    example: "2024-01-15T10:30:00Z"