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/desktop-client/src/main/adapters/wangyihao-links.ts

@@ -1,6 +1,8 @@
-const WANGYI_PUBLIC_ARTICLE_URL_PREFIX = "https://www.163.com/dy/article";
+const WANGYI_PUBLIC_ARTICLE_URL_PREFIX = 'https://www.163.com/dy/article'
 
 export function wangyihaoPublicArticleUrl(articleId: string): string | null {
-  const normalized = articleId.trim();
-  return normalized ? `${WANGYI_PUBLIC_ARTICLE_URL_PREFIX}/${encodeURIComponent(normalized)}.html` : null;
+  const normalized = articleId.trim()
+  return normalized
+    ? `${WANGYI_PUBLIC_ARTICLE_URL_PREFIX}/${encodeURIComponent(normalized)}.html`
+    : null
 }