feat: tilføj sudoers-regel for shutdown uden password

Opretter /etc/sudoers.d/shutdown-nopasswd så brugeren kan køre
/sbin/shutdown uden sudo-password — nødvendigt for shutdown/reboot
scripts. Syntaks valideres med visudo inden filen skrives.

kde_shortcuts/custom_shortcuts.kksrc

@@ -14,14 +14,11 @@ Name=app_close_and_shutdown
 Exec=kitty --override window_title="shutdown-script" bash -c "~/scripts/app_close_and_reboot.sh; exec bash"
 Name=app_close_and_restart.sh\s
 
-[StandardShortcuts]
-Close=Ctrl+Esc
-
 [kitty.desktop][Global Shortcuts]
 _launch=Meta+Return
 
 [kwin][Global Shortcuts]
-Window Close=Ctrl+W; Alt+F4
+Window Close=Alt+F4
 Window Custom Quick Tile Bottom=
 Window Custom Quick Tile Top=