i18n and UI fix

.sisyphus/evidence/task-06-i18n-cli.txt

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+# Task 06: Configure @lobehub/i18n-cli
+
+## Completed Actions
+
+1. **Installed @lobehub/i18n-cli@^1.26.1** as dev dependency
+2. **Added npm script**: `"i18n": "lobe-i18n"` to package.json
+3. **Verified CLI works**: `npm run i18n -- --help` returns usage info
+
+## Existing Configuration (.i18nrc.js)
+
+```javascript
+module.exports = {
+  entry: ['src/renderer/src/locales/default/*.json'],
+  output: 'src/renderer/src/locales',
+  entryLocale: 'zh-CN',
+  outputLocales: ['en-US', 'ja-JP'],
+  apiKey: process.env.OPENAI_API_KEY || '',
+  apiModel: 'gpt-4o-mini',
+};
+```
+
+## CLI Usage
+
+```bash
+# Run translation
+npm run i18n
+
+# With markdown translation
+npm run i18n -- --with-md
+
+# Lint translations
+npm run i18n -- --lint
+```
+
+## Notes
+
+- Source locale: zh-CN (in `locales/default/`)
+- Output locales: en-US, ja-JP
+- API key must be set via `OPENAI_API_KEY` environment variable
+- Uses gpt-4o-mini model for translation