feat: activate hjkl on tap and hold

hosts/nixos-laptop/default.nix

@@ -112,9 +112,9 @@
             lalt (tap-dance 200 (lmet (multi lmet alt) lmet lmet))
 
             ;; hjkl layer
-            ralt (layer-while-held hjkl)
+            ralt (tap-hold 200 200 (layer-switch hjkl) (layer-while-held hjkl)) ;; tap: switch   hold: switch while held
 
-            ;; do not do fancy stuff
+            ;; switch to normal keyboard layout
             rctl (layer-switch normal)
           )
 
@@ -125,7 +125,9 @@
             h left
             j down
             k up
-            l right)
+            l right
+
+            ralt (layer-switch default))
         ";
       };
     };