seo: bring meta descriptions into Bing's range, and add IndexNow

Bing Webmaster Tools flags meta descriptions under roughly 90-100
characters. It counts characters, so most Chinese, Japanese and Korean
pages failed even when the text read fine.

- Hand-written descriptions for the key site pages in 11 languages:
  home, pricing, support, team, the blog index and its categories. Plus
  16 docs pages whose text is too short to extend from.
- scripts/fit-meta-descriptions.mjs runs after both builds (v3/build.sh,
  deploy.sh and the docs workflow). It brings every other description to
  120-160 characters, using the page's opening sentences.
- Category descriptions now resolve for the transliterated zh/ja/ko
  slugs. Before, those pages only ever showed the generic text.
- IndexNow: the key file ships with the site from v3/public, and
  scripts/indexnow.mjs submits the live sitemaps. After deploying, each
  workflow submits its own half: the site or the docs.
- Translate the bodies of the Spanish team page and the German support
  page, which were still in English.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

content/client/windows/_index.zh-tw.md

@@ -1,7 +1,7 @@
 ---
 title: Windows
 weight: 4
-description: "RustDesk 的Windows文檔，提供安裝、設定、部署與疑難排解指南。"
+description: "在 Windows 上安裝與部署 RustDesk 的完整指南：用戶端初始設定、使用 MSI 安裝套件向大量電腦派送、靜默安裝參數與常用選項，以及可攜版如何取得管理員權限，協助 IT 團隊在企業內快速推廣 RustDesk 遠端桌面，省去逐台手動安裝。"
 keywords: ["rustdesk windows", "rustdesk windows install", "rustdesk msi", "rustdesk silent install", "rustdesk portable elevation", "rustdesk windows deployment"]
 ---