Function deriveUUID

src/utils/messages.ts:725–728

(parentUUID: UUID, index: number)

// parent UUID + content block index so that the same input always produces the
// same key across calls. Used by normalizeMessages and synthetic message creation.
export function deriveUUID(parentUUID: UUID, index: number): UUID {
  const hex = index.toString(16).padStart(12, '0')
  return `${parentUUID.slice(0, 24)}${hex}` as UUID
}

// Split messages, so each content block gets its own message
export function normalizeMessages(