Function generateManualTitle

coderd/x/chatd/quickgen.go:769–811

(
	ctx context.Context,
	messages []database.ChatMessage,
	fallbackModel fantasy.LanguageModel,
)

}

func generateManualTitle(
	ctx context.Context,
	messages []database.ChatMessage,
	fallbackModel fantasy.LanguageModel,
) (string, fantasy.Usage, error) {
	turns := extractManualTitleTurns(messages)
	selected := selectManualTitleTurnIndexes(turns)

	firstUserIndex := slices.IndexFunc(turns, func(turn manualTitleTurn) bool {
		return turn.role == string(database.ChatMessageRoleUser)
	})
	if firstUserIndex == -1 {
		return "", fantasy.Usage{}, nil
	}
	firstUserText := truncateRunes(turns[firstUserIndex].text, maxLatestUserMessageRunes)

	conversationBlock, latestUserMsg := buildManualTitleContext(turns, selected)
	systemPrompt := renderManualTitlePrompt(
		conversationBlock,
		firstUserText,
		latestUserMsg,
	)

	titleCtx, cancel := context.WithTimeout(ctx, 30*time.Second)
	defer cancel()

	userInput := strings.TrimSpace(latestUserMsg)
	if userInput == "" {
		userInput = strings.TrimSpace(firstUserText)
	}

	title, usage, err := generateStructuredTitleWithUsage(
		titleCtx,
		fallbackModel,
		systemPrompt,
		userInput,
	)
	if err != nil {
		return "", usage, err
	}

	return title, usage, nil
}

const turnStatusLabelPrompt = "You write compact chat status labels for a sidebar or push notification. " +
	"Given a chat title, current chat state, and the agent's latest message, populate the label field with a 2-5 word status label. " +