V1.2-beta

This update enhances the theme's expressiveness and user experience.

What's New

• 🎨 Improved the expressiveness of the "Vibrant" poster theme

• 🐞 Fixed the bug of duplication when creating content sources

• ✨ Upgraded the interaction experience of the theme editing interface, adding more annotation explanations

• 🌍 The theme editing interface is now internationalized, supporting English, Chinese, and Japanese