Method update

coding-agent/src/core/session.ts:146–154

(id: string, updates: Partial<Session>)

  }

  update(id: string, updates: Partial<Session>): void {
    const session = this.sessions.get(id);
    if (!session) {
      throw new Error(`Session ${id} not found`);
    }

    Object.assign(session, updates, { updatedAt: Date.now() });
    this.persist();
  }

  addMessage(id: string, message: Message): void {
    const session = this.sessions.get(id);