i3: improve keybindings

i3/i3/config

@@ -208,11 +208,13 @@ mode "$mode_system" {
 }
 bindsym $mod+Shift+e mode "$mode_system"
 
+bindsym $mod+Tab exec --no-startup-id $lock
+
 bindsym $mod+Print exec --no-startup-id "xfce4-screenshooter"
 
 bindsym $mod+c exec qalculate-gtk
 bindsym $mod+Shift+p exec xwacomcalibrate
-bindsym $mod+t exec thunar
+bindsym $mod+e exec thunar
 bindsym $mod+Shift+c exec $scripts/jupyter-calculator
 bindsym $mod+b exec firefox
 bindsym $mod+u exec pamac-manager