chore(frontend): introduce prettier + eslint and prune unused code

- Add Prettier 3 with prettier-plugin-organize-imports (sorts/removes unused imports)
- Add ESLint 10 flat config with typescript-eslint + eslint-plugin-vue + eslint-config-prettier
- Add root scripts: format, format:check, lint, lint:fix
- Reformat 257 files across admin-web, ops-web, desktop-client, packages
- Remove unused locals/exports flagged by --noUnusedLocals/--noUnusedParameters
- Fix duplicate localTabLabel key, surrogate-pair regex u-flag, NBSP literal in regex
- Skip server/ (Go) and apps/browser-extension/ (deprecated per ADR)

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/admin-web/src/views/KolProfileView.vue

@@ -1,17 +1,17 @@
 <script setup lang="ts">
-import { useQuery } from "@tanstack/vue-query";
-import { useI18n } from "vue-i18n";
+import { useQuery } from '@tanstack/vue-query'
+import { useI18n } from 'vue-i18n'
 
-import { kolManageApi } from "@/lib/api";
-import { formatError } from "@/lib/errors";
-import KolPersonaCard from "@/components/kol/KolPersonaCard.vue";
+import KolPersonaCard from '@/components/kol/KolPersonaCard.vue'
+import { kolManageApi } from '@/lib/api'
+import { formatError } from '@/lib/errors'
 
-const { t } = useI18n();
+const { t } = useI18n()
 
 const profileQuery = useQuery({
-  queryKey: ["kol", "profile"],
+  queryKey: ['kol', 'profile'],
   queryFn: () => kolManageApi.profile(),
-});
+})
 </script>
 
 <template>
@@ -19,8 +19,8 @@ const profileQuery = useQuery({
     <section class="page-title-card">
       <div class="page-title-card__header">
         <div class="page-title-card__copy">
-          <h2>{{ t("kol.profile.title") }}</h2>
-          <p>{{ t("kol.profile.subtitle") }}</p>
+          <h2>{{ t('kol.profile.title') }}</h2>
+          <p>{{ t('kol.profile.subtitle') }}</p>
         </div>
       </div>
     </section>
@@ -32,10 +32,7 @@ const profileQuery = useQuery({
       show-icon
       :message="formatError(profileQuery.error.value) || t('common.noData')"
     />
-    <KolPersonaCard
-      v-else-if="profileQuery.data.value"
-      :profile="profileQuery.data.value"
-    />
+    <KolPersonaCard v-else-if="profileQuery.data.value" :profile="profileQuery.data.value" />
   </div>
 </template>