[Feature]: Add I18nService in main

> [!NOTE]
> This issue/comment/review was translated by Claude.

Add I18nService to main, so that the text in main can also be translated according to the user's selected language.

---
<details>
<summary>Original Content</summary>

Add I18nService to main, so that the text in main can also be translated according to the user's selected language.
</details>