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/PublishPlatformSelector.vue

@@ -1,45 +1,48 @@
 <script setup lang="ts">
-import { computed } from "vue";
-import { useI18n } from "vue-i18n";
+import { computed } from 'vue'
+import { useI18n } from 'vue-i18n'
 
-import type { PublishPlatformOption } from "@/lib/publish-platforms";
+import type { PublishPlatformOption } from '@/lib/publish-platforms'
 
-const props = withDefaults(defineProps<{
-  modelValue: string[];
-  platforms: PublishPlatformOption[];
-  disabled?: boolean;
-  multiple?: boolean;
-}>(), {
-  disabled: false,
-  multiple: true,
-});
+const props = withDefaults(
+  defineProps<{
+    modelValue: string[]
+    platforms: PublishPlatformOption[]
+    disabled?: boolean
+    multiple?: boolean
+  }>(),
+  {
+    disabled: false,
+    multiple: true,
+  },
+)
 
 const emit = defineEmits<{
-  "update:modelValue": [value: string[]];
-}>();
+  'update:modelValue': [value: string[]]
+}>()
 
-const { t } = useI18n();
+const { t } = useI18n()
 
-const selectedValues = computed(() => props.modelValue ?? []);
+const selectedValues = computed(() => props.modelValue ?? [])
 
 function isSelected(platformId: string): boolean {
-  return selectedValues.value.includes(platformId);
+  return selectedValues.value.includes(platformId)
 }
 
 function togglePlatform(platformId: string): void {
   if (props.disabled) {
-    return;
+    return
   }
 
   if (props.multiple) {
     const next = isSelected(platformId)
       ? selectedValues.value.filter((item) => item !== platformId)
-      : [...selectedValues.value, platformId];
-    emit("update:modelValue", next);
-    return;
+      : [...selectedValues.value, platformId]
+    emit('update:modelValue', next)
+    return
   }
 
-  emit("update:modelValue", isSelected(platformId) ? [] : [platformId]);
+  emit('update:modelValue', isSelected(platformId) ? [] : [platformId])
 }
 </script>
 
@@ -72,18 +75,22 @@ function togglePlatform(platformId: string): void {
           <strong>{{ platform.name }}</strong>
         </span>
 
-        <span 
+        <span
           class="publish-platform-selector__status"
           :class="{ 'publish-platform-selector__status--bound': platform.bound }"
         >
-          {{ platform.bound ? (platform.accountLabel ?? t("custom.task.platformConnected")) : t("custom.task.platformUnauthorized") }}
+          {{
+            platform.bound
+              ? (platform.accountLabel ?? t('custom.task.platformConnected'))
+              : t('custom.task.platformUnauthorized')
+          }}
         </span>
       </button>
     </div>
 
     <div v-else class="publish-platform-selector__empty">
-      <strong>{{ t("custom.task.platformEmptyTitle") }}</strong>
-      <p>{{ t("custom.task.platformEmptyHint") }}</p>
+      <strong>{{ t('custom.task.platformEmptyTitle') }}</strong>
+      <p>{{ t('custom.task.platformEmptyHint') }}</p>
     </div>
   </div>
 </template>