Unify input methods with the installer keyboard selection

bin/omarchy-setup-input

@@ -0,0 +1,30 @@
+#!/bin/bash
+
+# omarchy:summary=Set up Japanese, Korean, or Chinese typing
+# omarchy:args=[mozc|hangul|pinyin|chewing]
+# omarchy:examples=omarchy setup input | omarchy setup input mozc
+# omarchy:requires-sudo=true
+
+set -euo pipefail
+
+if (( $# > 1 )); then
+  echo "Usage: omarchy setup input [mozc|hangul|pinyin|chewing]" >&2
+  exit 1
+fi
+
+method=${1:-}
+if [[ -z $method ]]; then
+  choice=$(jq -r 'to_entries[] | select(.key != "none") | .value.label' "$OMARCHY_PATH/default/input-methods/presets.json" |
+    gum choose --header "Select input language")
+  method=$(jq -r --arg label "$choice" 'to_entries[] | select(.value.label == $label) | .key' "$OMARCHY_PATH/default/input-methods/presets.json")
+fi
+
+case "$method" in
+  mozc | hangul | pinyin | chewing) ;;
+  *) echo "Unknown input method: $method" >&2; exit 1 ;;
+esac
+
+mapfile -t packages < <(jq -r --arg method "$method" '.[$method].packages[]' "$OMARCHY_PATH/default/input-methods/presets.json")
+omarchy-pkg-add "${packages[@]}"
+omarchy-input-method configure "$method"
+echo "Input method added. The default switch is Ctrl+Shift+Space or the Japanese/Korean input key; existing custom keys are preserved."