Package autostart puts Factor into the user's login sequence: a systemd
user service where a user manager is running, an XDG autostart entry on
other Linux desktops, a launchd agent on macOS, and a Run registry value on
Windows. The wizard installs these itself — a missing autostart is a setup
step, not homework for the user.
Uninstall removes whatever Install put in place. A platform may hold more
than one flavour (a box that gained systemd after an XDG install), so every
flavour it knows is cleaned, and an absent entry is not an error.
Install writes the login entry for this platform and enables it. exe is the
binary to start; configPath, when not blank, is carried into the entry so a
gateway born at login reads the same config the wizard wrote.