Second VM failure: Fedora's polkit-kde .desktop carries
X-systemd-skip=true (and OnlyShowIn on some versions), so niri's
xdg-desktop-autostart.target skips the agent regardless — package
installed, agent dead, same error.
Stop fighting .desktop semantics: install a polkit-agent.service USER
unit (WantedBy=graphical-session.target, which niri/Hyprland/Mango all
bring up) with the Fedora kf6 binary path, pre-linked into
graphical-session.target.wants. Idempotent on both file and symlink.
Pathfinder
0814c5bde7