ComponentA: Rectangle {
  label: "Component A"
  lifeline: true
  rx: 12
  ry: 12
  themeOverride: {
    backgroundColor: "#dbeafe"
    borderColor: "#3b82f6"
    textColor: "#1e3a8a"
  }

  V14_A: Process {
    label: "Version 1.4"
  }
  V15_A: Process {
    label: "Version 1.5"
  }
  V20_A: Process {
    label: "Version 2.0"
  }
}

ComponentB: Rectangle {
  label: "Component B"
  lifeline: true
  rx: 12
  ry: 12
  themeOverride: {
    backgroundColor: "#fee2e2"
    borderColor: "#ef4444"
    textColor: "#7f1d1d"
  }

  V14_B: Process {
    label: "Version 1.4"
  }
}

// Sequence calls & exterior events
LEFT -> ComponentA.V15_A : "New field added" { startX: -80, startY: 277 }
LEFT -> ComponentB : "Component B Sync" { startX: 266, startY: 309 }