Method updateUser

src/main/auth-store.ts:194–201

* Update user data (e.g., after profile update)

(updates: Partial<AuthUser>)

   * Update user data (e.g., after profile update)
   */
  updateUser(updates: Partial<AuthUser>): AuthUser | null {
    const data = this.load()
    if (!data) return null

    data.user = { ...data.user, ...updates }
    this.save(data)
    return data.user
  }
}