fix: refresh desktop integration on updates

packaging/linux/AppRun

@@ -10,4 +10,4 @@ export GST_PLUGIN_SYSTEM_PATH_1_0="$HERE/usr/lib/gstreamer-1.0"
 export WEBKIT_EXEC_PATH="$HERE/usr/lib/webkit2gtk-4.1"
 
 cd "$HERE/usr/bin"
-exec "$HERE/usr/bin/verstak-desktop" "$@"
+exec "$HERE/usr/bin/verstak" "$@"

packaging/linux/verstak

@@ -0,0 +1,6 @@
+#!/usr/bin/env sh
+
+set -eu
+
+HERE="$(CDPATH= cd -- "$(dirname -- "$0")" && pwd)"
+exec "$HERE/verstak-desktop" "$@"

packaging/linux/verstak.desktop

@@ -2,8 +2,10 @@
 Type=Application
 Name=Verstak
 Comment=Local-first workspace
-Exec=verstak-desktop %U
+Exec=verstak %U
 Icon=verstak
 Terminal=false
-Categories=Office;Utility;
+Categories=Office;
 StartupNotify=true
+X-Verstak-Desktop-Entry=true
+X-AppImage-Name=Verstak