refactor(frontend): os.select, MkSelectのitem指定をオブジェクトによる定義に統一し、型を狭める (#16475)

* refactor(frontend): MkSelectのitem指定をオブジェクトによる定義に統一

* fix

* spdx

* fix

* fix os.select

* fix lint

* add comment

* fix

* fix: os.select対応漏れを修正

* fix

* fix

* fix: MkSelectのmodelに対する型チェックを厳格化

* fix

* fix

* fix

* Update packages/frontend/src/components/MkEmbedCodeGenDialog.vue

Co-authored-by: syuilo <4439005+syuilo@users.noreply.github.com>

* fix

* fix types

* fix

* fix

* Update packages/frontend/src/pages/admin/roles.editor.vue

Co-authored-by: syuilo <4439005+syuilo@users.noreply.github.com>

* fix: MkSelectに直接配列を指定している場合に正常に型が解決されるように

---------

Co-authored-by: syuilo <4439005+syuilo@users.noreply.github.com>

packages/frontend/src/components/MkWatermarkEditorDialog.vue

@@ -30,7 +30,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 			</div>
 			<div :class="$style.controls">
 				<div class="_spacer _gaps">
-					<MkSelect v-model="type" :items="[{ label: i18n.ts._watermarkEditor.text, value: 'text' }, { label: i18n.ts._watermarkEditor.image, value: 'image' }, { label: i18n.ts._watermarkEditor.advanced, value: 'advanced' }]">
+					<MkSelect v-model="type" :items="typeDef">
 						<template #label>{{ i18n.ts._watermarkEditor.type }}</template>
 					</MkSelect>
 
@@ -86,6 +86,7 @@ import * as os from '@/os.js';
 import { deepClone } from '@/utility/clone.js';
 import { ensureSignin } from '@/i.js';
 import { genId } from '@/utility/id.js';
+import { useMkSelect } from '@/composables/use-mkselect.js';
 
 const $i = ensureSignin();
 
@@ -186,7 +187,18 @@ async function cancel() {
 	dialog.value?.close();
 }
 
-const type = ref(preset.layers.length > 1 ? 'advanced' : preset.layers[0].type);
+const {
+	model: type,
+	def: typeDef,
+} = useMkSelect({
+	items: [
+		{ label: i18n.ts._watermarkEditor.text, value: 'text' },
+		{ label: i18n.ts._watermarkEditor.image, value: 'image' },
+		{ label: i18n.ts._watermarkEditor.advanced, value: 'advanced' },
+	],
+	initialValue: preset.layers.length > 1 ? 'advanced' : preset.layers[0].type,
+});
+
 watch(type, () => {
 	if (type.value === 'text') {
 		preset.layers = [createTextLayer()];