misc niri config update.

.config/niri/config.kdl

@@ -41,7 +41,7 @@ input {
     }
 
     warp-mouse-to-focus
-
+    disable-power-key-handling
     focus-follows-mouse max-scroll-amount="0%"
 }
 
@@ -121,6 +121,7 @@ layout {
 
 hotkey-overlay {
     skip-at-startup
+    hide-not-bound
 }
 
 layer-rule {
@@ -287,7 +288,7 @@ binds {
     // The allow-inhibiting=false property can be applied to other binds as well,
     // which ensures niri always processes them, even when an inhibitor is active.
     Mod+Alt+Escape allow-inhibiting=false { toggle-keyboard-shortcuts-inhibit; }
-    Mod+Shift+Escape hotkey-overlay-title="Exit niri" { quit; }
+    XF86PowerOff hotkey-overlay-title="Exit niri" { quit; }
     Super+Escape hotkey-overlay-title="Lock the Screen (gtklock)" { spawn "gtklock" "-d"; }
     Mod+Delete hotkey-overlay-title="Lock screen and Hibernate ..." allow-when-locked=true {
         spawn-sh "(pgrep gtklock || gtklock -d) && sleep 1 && systemctl hibernate";