feat(i18n): add zh_Hant and ja_JP translations to all adapter YAML files

- Add zh_Hant (Traditional Chinese) to all 17 adapter YAML metadata and config fields
- Add ja_JP translations to global adapters (Telegram, Discord, Slack, Lark, LINE)
- Fix buggy zh_Hant in line.yaml and slack.yaml (contained simplified Chinese)
- Add zh_Hant field to backend I18nString model
- Add adapter category grouping with locale-aware ordering
- Add webhook Cloud CTA for community edition users
- Fix wizard progress not clearing on skip/complete

src/langbot/pkg/platform/sources/officialaccount.yaml

@@ -5,19 +5,25 @@ metadata:
   label:
     en_US: Official Account
     zh_Hans: 微信公众号
+    zh_Hant: 微信公眾號
   description:
     en_US: Official Account Adapter
     zh_Hans: 微信公众号适配器，需要公网地址以接收消息推送，请查看文档了解使用方式
+    zh_Hant: 微信公眾號適配器，需要公網地址以接收訊息推送，請查看文件了解使用方式
   icon: officialaccount.png
 spec:
+  categories:
+    - china
   config:
     - name: webhook_url
       label:
         en_US: Webhook Callback URL
         zh_Hans: Webhook 回调地址
+        zh_Hant: Webhook 回調地址
       description:
         en_US: Copy this URL and paste it into your Official Account webhook configuration
         zh_Hans: 复制此地址并粘贴到微信公众号的 Webhook 配置中
+        zh_Hant: 複製此地址並貼到微信公眾號的 Webhook 設定中
       type: webhook-url
       required: false
       default: ""
@@ -25,13 +31,14 @@ spec:
       label:
         en_US: Token
         zh_Hans: 令牌
-      type: string
+        zh_Hant: 令牌
       required: true
       default: ""
     - name: EncodingAESKey
       label:
         en_US: EncodingAESKey
         zh_Hans: 消息加解密密钥
+        zh_Hant: 訊息加解密密鑰
       type: string
       required: true
       default: ""
@@ -39,6 +46,7 @@ spec:
       label:
         en_US: App ID
         zh_Hans: 应用ID
+        zh_Hant: 應用ID
       type: string
       required: true
       default: ""
@@ -46,6 +54,7 @@ spec:
       label:
         en_US: App Secret
         zh_Hans: 应用密钥
+        zh_Hant: 應用密鑰
       type: string
       required: true
       default: ""
@@ -53,6 +62,7 @@ spec:
       label:
         en_US: Mode
         zh_Hans: 接入模式
+        zh_Hant: 接入模式
       type: string
       required: true
       default: "drop"
@@ -60,6 +70,7 @@ spec:
       label:
         en_US: Loading Message
         zh_Hans: 加载消息
+        zh_Hant: 載入訊息
       type: string
       required: true
       default: "AI正在思考中，请发送任意内容获取回复。"
@@ -67,9 +78,11 @@ spec:
       label:
         en_US: API Base URL
         zh_Hans: API 基础 URL
+        zh_Hant: API 基礎 URL
       description:
         en_US: API Base URL, used for accessing the Official Account API. If you are deploying in an internal network environment and accessing the Official Account API through a reverse proxy, please fill in this item according to the documentation.
         zh_Hans: 可选，若您部署在内网环境并通过反向代理访问微信公众号 API，可根据文档修改此项
+        zh_Hant: 可選，若您部署在內網環境並透過反向代理存取微信公眾號 API，可根據文件修改此項
       type: string
       required: false
       default: "https://api.weixin.qq.com"