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/self-host/rustdesk-server-pro/oidc/_index.zh-cn.md

@@ -1,7 +1,7 @@
 ---
 title: OIDC
 weight: 16
-description: "RustDesk 的OIDC文档，提供安装、配置、部署和故障排查指南。"
+description: "在 RustDesk Server Pro 中配置 OpenID Connect（OIDC）单点登录，让用户使用 Google、Okta、Azure、GitHub、GitLab 等身份提供商的账号登录，并说明回调地址、客户端 ID 与密钥等关键设置。"
 keywords: ["rustdesk oidc", "rustdesk openid connect", "rustdesk sso", "rustdesk azure login", "rustdesk okta login", "rustdesk github login"]
 ---
 

content/self-host/rustdesk-server-pro/oidc/_index.zh-tw.md

@@ -1,7 +1,7 @@
 ---
 title: OIDC
 weight: 16
-description: "RustDesk 的OIDC文檔，提供安裝、設定、部署與疑難排解指南。"
+description: "在 RustDesk Server Pro 中設定 OpenID Connect（OIDC）單一登入，讓使用者以 Google、Okta、Azure、GitHub、GitLab 等身分提供者的帳號登入，並說明回呼網址、用戶端 ID 與密鑰等關鍵設定。"
 keywords: ["rustdesk oidc", "rustdesk openid connect", "rustdesk sso", "rustdesk azure login", "rustdesk okta login", "rustdesk github login"]
 ---