Function createMessage

cli/src/utils/__tests__/collapse-helpers.test.ts:19–31

(
  id: string,
  variant: 'ai' | 'user' | 'agent' | 'error' = 'ai',
  blocks?: ContentBlock[],
  metadata?: { isCollapsed?: boolean; userOpened?: boolean },
)

// Helper to create minimal test messages
const createMessage = (
  id: string,
  variant: 'ai' | 'user' | 'agent' | 'error' = 'ai',
  blocks?: ContentBlock[],
  metadata?: { isCollapsed?: boolean; userOpened?: boolean },
): ChatMessage => ({
  id,
  variant,
  content: '',
  timestamp: new Date().toISOString(),
  blocks,
  metadata,
})

// Helper to create tool blocks
const createToolBlock = (