Function startNewSession

extensions/cli/src/session.ts:557–582

(history: ChatHistoryItem[] = [])

 * Start a new session with a new sessionId
 */
export function startNewSession(history: ChatHistoryItem[] = []): Session {
  const manager = SessionManager.getInstance();

  // Clear the current session from memory (don't delete the file)
  manager.clear();

  // Create a new session with a new sessionId
  const newSession: Session = {
    sessionId: uuidv4(),
    title: DEFAULT_SESSION_TITLE,
    workspaceDirectory: process.cwd(),
    history,
    usage: {
      totalCost: 0,
      promptTokens: 0,
      completionTokens: 0,
      promptTokensDetails: {
        cachedTokens: 0,
        cacheWriteTokens: 0,
      },
    },
  };

  manager.setSession(newSession);
  return newSession;
}

/**
 * Track cost for the current session