v0.4.9

https://www.notezapp.com/changelog/0.4.9-memory-system-regex-search-autosave-external-db

• 新增：实现了 Nerd 记忆系统，Nerd 现在能够记住上下文信息。
• 优化：将模型选择功能移至页脚区域，简化界面布局。
• 修复：解决了标签栏重复出现的问题。
• 新增：支持在 Nerd 中使用正则表达式进行高级搜索。
• 优化：改进编辑器格式传递机制，确保格式信息正确传递至后端。
• 优化：升级自动保存功能，提供更加流畅无感的保存体验。
• 新增：为外部数据库功能增加付费墙限制。

• New: Implemented memory system for Nerd, enabling Nerd to retain contextual information.
• Improved: Relocated model selection to the footer area for a cleaner interface layout.
• Fixed: Resolved the issue of tab bar appearing repeatedly.
• New: Added regex search capability in Nerd for advanced search operations.
• Improved: Enhanced editor format transmission mechanism to ensure proper format delivery to the backend.
• Improved: Upgraded auto-save functionality to provide a more seamless and unobtrusive saving experience.
• New: Introduced paywall for external database feature.