- Rename HOW_TO_USE_EMAIL_REPLY.md to HOW_TO_USE_EMAIL_REPLY_ZH.md
- Rename HOW_TO_USE_EMAIL_REPLY_EN.md to HOW_TO_USE_EMAIL_REPLY.md
- Update all language switcher links accordingly
- English version is now the default (no language suffix)
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Create HOW_TO_USE_EMAIL_REPLY_EN.md with full English translation
- Add language switcher to both Chinese and English docs
- Update README.md to link to both language versions
- Ensure consistent formatting between language versions
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>