Add systemd user unit support?

[SourLemonJuice]

Use systemd user unit to autostart this watermark.
Like this: https://gist.github.com/SourLemonJuice/07ca3d0a66194110dfe4c45229320c1c

This makes it easy to control its autostart and view status.

EDIT:
Use WantedBy=graphical-session.target instead default.target to make it can autostart.

[AILIFE-4798]

on mint, when starting manually with ystemctl --user start activate-linux works, but can not auto start

× activate-linux.service - The "Activate Windows" watermark ported to Linux
     Loaded: loaded (/etc/xdg/systemd/user/activate-linux.service; enabled; preset: enabled)
     Active: failed (Result: core-dump) since Sun 2025-10-26 04:30:48 CST; 24s ago
   Duration: 133ms
    Process: 10540 ExecStart=/usr/bin/activate-linux (code=dumped, signal=SEGV)
   Main PID: 10540 (code=dumped, signal=SEGV)
        CPU: 4ms

Oct 26 04:30:48 ailife-p8-laptop systemd[1209]: activate-linux.service: Failed with result 'core-dump'.
Oct 26 04:30:48 ailife-p8-laptop systemd[1209]: activate-linux.service: Scheduled restart job, restart counter is at 6.
Oct 26 04:30:48 ailife-p8-laptop systemd[1209]: activate-linux.service: Start request repeated too quickly.
Oct 26 04:30:48 ailife-p8-laptop systemd[1209]: activate-linux.service: Failed with result 'core-dump'.
Oct 26 04:30:48 ailife-p8-laptop systemd[1209]: Failed to start activate-linux.service - The "Activate Windows" watermar>

[SourLemonJuice]

It works with KDE Plasma on Archlinux and Fedora 42, maybe Mint's desktop didn't implement graphical-session.target. Sad.

[AILIFE-4798]

# put it in: /etc/systemd/user/
# and reload units(run as user self): systemctl --user daemon-reload
# use for: https://github.com/MrGlockenspiel/activate-linux
#
# that reminds me of this: https://github.com/USSURATONCACHI/activate-linux-toggle
# well, I don't like that "toggle", you can use `systemctl --user <operation> <unit-name>` to control any user unit.

[Unit]
Description=The "Activate Windows" watermark ported to Linux
After=graphical-session.target

[Service]
Type=simple
# it's more fun with this flag(if you have windows font): --text-font "Segoe UI"
ExecStartPre=/bin/sleep 10
ExecStart=/usr/bin/activate-linux
Restart=on-failure

[Install]
WantedBy=graphical-session.target

this is what i used to get it working