feat: The Steamify shortcut opens the app

Steamify CachyOS on the desktop and in the launcher starts the newest app
(in Konsole the first time, while PySide6 still has to be installed); the
terminal menu is Steamify Terminal in the launcher. A shortcut from before
2.0.1 is ticked in the menu, so a normal run replaces it. steamify-app.sh
leaves the shortcut's launcher entry (same id) alone.

lib/menu.sh

@@ -24,7 +24,7 @@ declare -A LABEL=(
     [theme]="Install SteamOS theme: Vapor look (cachyos-vapor)"
     [glyphs]="Install Steam Deck/Machine icons: Deck button icons in gaming mode"
     [single]="Single user mode: no password, lock screen or log out (SDDM)"
-    [launcher]="Steamify shortcut: desktop icon to run this again"
+    [launcher]="Steamify shortcut: the app on the desktop, Steamify Terminal in the launcher"
     [cec]="HDMI-CEC: use Steam with the TV remote, TV on/off with the PC (experimental)"
     [machine]="Steam Machine support: LED bar driver, hardware settings in Steam"
     [kpin]="Pin the kernel to $PINNED_KERNEL_VER (fixes rebooting after shutdown)"
@@ -72,6 +72,9 @@ detect_components() {
     done
     # HDMI-CEC set up by an older version: tick it, so a normal run fixes it.
     component_available cec && cec_repair && WANTED[cec]=1
+    # The terminal-only Steamify shortcut from before 2.0.1: tick it, so a
+    # normal run replaces it with the app.
+    launcher_repair && WANTED[launcher]=1
     # Shows the current and newest BIOS version.
     bios_available && { bios_lookup_newest; LABEL[bios]="$(bios_label)"; }
     # First run: preselect the full SteamOS experience (never an action).