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/guilded.toml

@@ -5,6 +5,24 @@ category = "enterprise"
 icon = "🏰"
 protocol = "websocket"
 
+[i18n.zh]
+description = "Guilded 机器人适配器，在 Guilded 服务器和频道中收发消息"
+
+[i18n.zh-TW]
+description = "Guilded 機器人適配器，在 Guilded 伺服器和頻道中收發訊息"
+
+[i18n.ja]
+description = "Guildedボットアダプター、Guildedサーバーとチャンネルでのメッセージング"
+
+[i18n.ko]
+description = "Guilded 봇 어댑터, Guilded 서버와 채널에서 메시지 송수신"
+
+[i18n.de]
+description = "Guilded-Bot-Adapter für Nachrichten in Guilded-Servern und -Kanälen"
+
+[i18n.es]
+description = "Adaptador de bot Guilded para mensajería en servidores y canales de Guilded"
+
 [metadata]
 url = "https://www.guilded.gg"
 docs = "https://www.guilded.gg/docs/api/"