Ubuntu images ship lxd as a snap even when it is never used or
initialized; its daemon/socket, /var/lib/lxd (or /var/snap/lxd) and
lxdbr0 collide with Incus. Before installing Incus, detect snap lxd and
remove it — but only when clearly unused: abort instead of deleting when
the daemon is running, containers exist, or an initialized lxd.db is
present (checked under both deb and snap data dirs). Idempotent; skipped
when the snap is already gone.
Co-authored-by: CommandCodeBot <noreply@commandcode.ai>
