feat: add i18n descriptions to all hands and channels (#22)

Add [i18n.zh], [i18n.zh-TW], [i18n.ja], [i18n.ko], [i18n.de], [i18n.es]
sections with translated descriptions to:
- 15 Hand TOML files (hands/*/HAND.toml)
- 44 Channel TOML files (channels/*.toml)

This enables the website to display localized Hand and Channel descriptions
based on the user's selected language.

channels/wecom.toml

@@ -5,6 +5,24 @@ category = "enterprise"
 icon = "🏢"
 protocol = "webhook"
 
+[i18n.zh]
+description = "企业微信适配器，在企业微信组织中收发企业消息"
+
+[i18n.zh-TW]
+description = "企業微信適配器，在企業微信組織中收發企業訊息"
+
+[i18n.ja]
+description = "WeCom（WeChat Work）アダプター、WeCom組織内でのエンタープライズメッセージング"
+
+[i18n.ko]
+description = "WeCom(WeChat Work) 어댑터, WeCom 조직 내 기업 메시지 송수신"
+
+[i18n.de]
+description = "WeCom (WeChat Work)-Adapter für Unternehmensnachrichten in WeCom-Organisationen"
+
+[i18n.es]
+description = "Adaptador de WeCom (WeChat Work) para mensajería empresarial en organizaciones WeCom"
+
 [metadata]
 url = "https://work.weixin.qq.com"
 docs = "https://developer.work.weixin.qq.com/document/"