refactor(hyprland): replace kitty-herdr with tern and adjust keybindings

- Replaced `kitty-herdr` with `tern` as the default scratchpad terminal
  across configs, scripts, and docs.
- Remapped window resize controls to `SUPER + CTRL + HJKL` and monitor
  navigation to `ALT` modifiers.
- Removed the `scrolloverview` plugin configuration and cleaned up
  obsolete menu bindings.

dot_local/bin/executable_omarchy-toggle-scratch

@@ -25,7 +25,7 @@ case ${1:-scratchpad} in
 scratchpad)
   NAME="scratchpad"
   HOME_MONITOR="Apple Computer Inc StudioDisplay 0x984262A7"
-  MEMBERS=("kitty-herdr|kitty --class=kitty-herdr --config $HOME/.config/kitty/herdr.conf")
+  MEMBERS=("so.stencil.tern|tern")
   ;;
 claude)
   NAME="claude"