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/components/kol/KolPackageCard.vue

@@ -1,31 +1,35 @@
 <script setup lang="ts">
-import { computed } from "vue";
-import { UserOutlined, TagOutlined, TeamOutlined, ThunderboltOutlined } from "@ant-design/icons-vue";
-import type { KolPackageSummary } from "@geo/shared-types";
-import { useI18n } from "vue-i18n";
+import { TagOutlined, TeamOutlined, ThunderboltOutlined, UserOutlined } from '@ant-design/icons-vue'
+import type { KolPackageSummary } from '@geo/shared-types'
+import { computed } from 'vue'
+import { useI18n } from 'vue-i18n'
 
-import { resolveApiURL } from "@/lib/api";
+import { resolveApiURL } from '@/lib/api'
 
 const props = defineProps<{
-  package: KolPackageSummary;
-}>();
+  package: KolPackageSummary
+}>()
 
 const emit = defineEmits<{
-  (e: "click", id: number): void;
-}>();
+  (e: 'click', id: number): void
+}>()
 
-const { t } = useI18n();
-const coverUrl = computed(() => resolveApiURL(props.package.cover_url));
+const { t } = useI18n()
+const coverUrl = computed(() => resolveApiURL(props.package.cover_url))
 
 function handleClick() {
-  emit("click", props.package.id);
+  emit('click', props.package.id)
 }
 </script>
 
 <template>
   <a-card hoverable class="kol-package-card" @click="handleClick">
     <template #cover>
-      <div v-if="coverUrl" class="card-cover-image" :style="{ backgroundImage: `url(${coverUrl})` }">
+      <div
+        v-if="coverUrl"
+        class="card-cover-image"
+        :style="{ backgroundImage: `url(${coverUrl})` }"
+      >
         <img alt="cover" :src="coverUrl" />
       </div>
       <div v-else class="card-cover-fallback">
@@ -46,7 +50,7 @@ function handleClick() {
             </a-avatar>
             <span class="kol-name">{{ props.package.kol_display_name }}</span>
           </div>
-          <div class="industry-badge" v-if="props.package.industry">
+          <div v-if="props.package.industry" class="industry-badge">
             <a-tag color="blue">
               <template #icon><TagOutlined /></template>
               {{ props.package.industry }}
@@ -95,7 +99,7 @@ function handleClick() {
 }
 
 .card-cover-image::before {
-  content: "";
+  content: '';
   position: absolute;
   inset: -16px;
   z-index: 0;
@@ -106,7 +110,7 @@ function handleClick() {
 }
 
 .card-cover-image::after {
-  content: "";
+  content: '';
   position: absolute;
   inset: 0;
   z-index: 1;