type: object
required:
  - id
  - workout
  - start_time
  - end_time
properties:
  id:
    type: string
    format: uuid
    description: UUID v7 primary key.
    example: 0191a23b-dead-7000-beef-000000000005
  workout:
    type: string
    format: uuid
    description: Foreign key referencing the parent workout.
    example: 0191a23b-dead-7000-beef-000000000002
  start_time:
    type: string
    format: date-time
    description: ISO 8601 timestamp when the session started.
    example: '2026-01-15T09:00:00Z'
  end_time:
    type: string
    format: date-time
    description: ISO 8601 timestamp when the session ended.
    example: '2026-01-15T09:45:00Z'