calcurse: notify whole-day events every morning

The calcurse daemon only alerts timed appointments, so birthdays went unnoticed. A daily 09:00 timer, started from xmonad and persistent across suspend, sends today's events through notify-send.

.config/xmonad/xmonad.hs

@@ -358,6 +358,7 @@ myStartupHook = do
   spawnOnce "nm-applet"
   spawnOnce "arch-audit-gtk"
   spawnOnce "calcurse --daemon"
+  spawnOnce "systemctl --user start calcurse-today.timer"
   spawnOnce "systemctl --user start dunst"
   spawnOnce "lxpolkit"
   spawnOnce "numlockx"