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/bluesky.toml

@@ -5,6 +5,24 @@ category = "social"
 icon = "🦋"
 protocol = "rest-api"
 
+[i18n.zh]
+description = "Bluesky AT 协议适配器，在去中心化社交网络上发布和阅读内容"
+
+[i18n.zh-TW]
+description = "Bluesky AT 協議適配器，在去中心化社群網路上發布和閱讀內容"
+
+[i18n.ja]
+description = "Bluesky ATプロトコルアダプター、分散型ソーシャルネットワークへの投稿と閲覧"
+
+[i18n.ko]
+description = "Bluesky AT 프로토콜 어댑터, 탈중앙화 소셜 네트워크에서 게시 및 읽기"
+
+[i18n.de]
+description = "Bluesky AT-Protokoll-Adapter zum Posten und Lesen im dezentralen sozialen Netzwerk"
+
+[i18n.es]
+description = "Adaptador del protocolo AT de Bluesky para publicar y leer en la red social descentralizada"
+
 [metadata]
 url = "https://bsky.app"
 docs = "https://docs.bsky.app"