Lven Instant 0.8.19 (Linux)

Lven Instant — Linux 0.8.19

The archive now behaves like the Cloud one. It carries a top-level launcher, so
./lven-linux works from the extracted directory without knowing the layout,
plus install.sh and uninstall.sh for a proper system install and a clean removal.

The Debian package ships a man page and a changelog, its copyright file is a
valid machine-readable one, and per-file checksums ship beside every artifact.

On Wayland the window now associates with its desktop entry, so the dock shows
the Lven icon and name instead of a generic placeholder.

Both clean-machine installs pass on Ubuntu 22.04 and 24.04.