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/ArticleActionGroup.vue

@@ -5,62 +5,65 @@ import {
   EditOutlined,
   EyeOutlined,
   SendOutlined,
-} from "@ant-design/icons-vue";
-import { useI18n } from "vue-i18n";
+} from '@ant-design/icons-vue'
+import { useI18n } from 'vue-i18n'
 
-const props = withDefaults(defineProps<{
-  showPublish?: boolean;
-  canPublish?: boolean;
-  publishDisabledTitle?: string;
-  showEdit?: boolean;
-  canEdit?: boolean;
-  editDisabledTitle?: string;
-  showPreview?: boolean;
-  canPreview?: boolean;
-  previewDisabledTitle?: string;
-  showCopy?: boolean;
-  canCopy?: boolean;
-  copyDisabledTitle?: string;
-  showDelete?: boolean;
-  canDelete?: boolean;
-  deleteDisabledTitle?: string;
-  deleteConfirmTitle?: string;
-  deleteLoading?: boolean;
-}>(), {
-  showPublish: false,
-  canPublish: true,
-  publishDisabledTitle: "",
-  showEdit: false,
-  canEdit: true,
-  editDisabledTitle: "",
-  showPreview: false,
-  canPreview: true,
-  previewDisabledTitle: "",
-  showCopy: false,
-  canCopy: true,
-  copyDisabledTitle: "",
-  showDelete: true,
-  canDelete: true,
-  deleteDisabledTitle: "",
-  deleteConfirmTitle: "",
-  deleteLoading: false,
-});
+withDefaults(
+  defineProps<{
+    showPublish?: boolean
+    canPublish?: boolean
+    publishDisabledTitle?: string
+    showEdit?: boolean
+    canEdit?: boolean
+    editDisabledTitle?: string
+    showPreview?: boolean
+    canPreview?: boolean
+    previewDisabledTitle?: string
+    showCopy?: boolean
+    canCopy?: boolean
+    copyDisabledTitle?: string
+    showDelete?: boolean
+    canDelete?: boolean
+    deleteDisabledTitle?: string
+    deleteConfirmTitle?: string
+    deleteLoading?: boolean
+  }>(),
+  {
+    showPublish: false,
+    canPublish: true,
+    publishDisabledTitle: '',
+    showEdit: false,
+    canEdit: true,
+    editDisabledTitle: '',
+    showPreview: false,
+    canPreview: true,
+    previewDisabledTitle: '',
+    showCopy: false,
+    canCopy: true,
+    copyDisabledTitle: '',
+    showDelete: true,
+    canDelete: true,
+    deleteDisabledTitle: '',
+    deleteConfirmTitle: '',
+    deleteLoading: false,
+  },
+)
 
 const emit = defineEmits<{
-  publish: [];
-  edit: [];
-  preview: [];
-  copy: [];
-  delete: [];
-}>();
+  publish: []
+  edit: []
+  preview: []
+  copy: []
+  delete: []
+}>()
 
-const { t } = useI18n();
+const { t } = useI18n()
 
 function resolveTitle(enabled: boolean, enabledTitle: string, disabledTitle?: string): string {
   if (enabled) {
-    return enabledTitle;
+    return enabledTitle
   }
-  return disabledTitle || enabledTitle;
+  return disabledTitle || enabledTitle
 }
 </script>
 
@@ -84,10 +87,7 @@ function resolveTitle(enabled: boolean, enabledTitle: string, disabledTitle?: st
       </span>
     </a-tooltip>
 
-    <a-tooltip
-      v-if="showEdit"
-      :title="resolveTitle(canEdit, t('common.edit'), editDisabledTitle)"
-    >
+    <a-tooltip v-if="showEdit" :title="resolveTitle(canEdit, t('common.edit'), editDisabledTitle)">
       <span>
         <a-button
           type="text"
@@ -120,10 +120,7 @@ function resolveTitle(enabled: boolean, enabledTitle: string, disabledTitle?: st
       </span>
     </a-tooltip>
 
-    <a-tooltip
-      v-if="showCopy"
-      :title="resolveTitle(canCopy, t('common.copy'), copyDisabledTitle)"
-    >
+    <a-tooltip v-if="showCopy" :title="resolveTitle(canCopy, t('common.copy'), copyDisabledTitle)">
       <span>
         <a-button
           type="text"