Add engines from the command line through the Typing menu's path

omarchy setup input <engine> had its own restart, append, select and
live-rollback code in configure.py, parallel to the menu's. It now
installs the packages and appends through typing_setup, leaving
configure.py with install-time seeding and update defaults.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

bin/omarchy-setup-input

@@ -25,5 +25,5 @@ esac
 
 mapfile -t packages < <(jq -r --arg method "$method" '.[$method].packages[]' "$OMARCHY_PATH/default/input-methods/presets.json")
 omarchy-pkg-add "${packages[@]}"
-omarchy-input-method configure "$method"
+python "$OMARCHY_PATH/default/input-methods/typing_setup.py" add "$method"
 echo "Input method added. Use Super+I or the Japanese/Korean input key to switch; existing custom Fcitx keys are preserved."