Function extractConversationText

src/utils/sessionTitle.ts:33–59

(messages: Message[])

 * recent context wins when the conversation is long.
 */
export function extractConversationText(messages: Message[]): string {
  const parts: string[] = []
  for (const msg of messages) {
    if (msg.type !== 'user' && msg.type !== 'assistant') continue
    if ('isMeta' in msg && msg.isMeta) continue
    if (
      'origin' in msg &&
      (msg as unknown as { origin?: { kind?: string } }).origin &&
      (msg as unknown as { origin: { kind?: string } }).origin.kind !== 'human'
    )
      continue
    const content = msg.message!.content
    if (typeof content === 'string') {
      parts.push(content)
    } else if (Array.isArray(content)) {
      for (const block of content) {
        if ('type' in block && block.type === 'text' && 'text' in block) {
          parts.push(block.text as string)
        }
      }
    }
  }
  const text = parts.join('\n')
  return text.length > MAX_CONVERSATION_TEXT
    ? text.slice(-MAX_CONVERSATION_TEXT)
    : text
}

const SESSION_TITLE_PROMPT = `Generate a concise, sentence-case title (3-7 words) that captures the main topic or goal of this coding session. The title should be clear enough that the user recognizes the session in a list. Use sentence case: capitalize only the first word and proper nouns.