v1.5.7

## What's Changed

- feat: Added custom headers to OpenAI configurations  
- feat: Implemented chat history search  
- feat: Implemented auto-stop and auto-submit for voice messages  
- fix: Various bugs fixed


## Note for Firefox Users

As I mentioned in the [1.5.6 release](https://github.com/n4ze3m/page-assist/releases/tag/v1.5.6), the Firefox extension now requires a human review, which will delay the release or the availability of the latest updates. I will upload the latest version to the add-on store every week and hope they approve it quickly



**Full Changelog**: https://github.com/n4ze3m/page-assist/compare/v1.5.6...v1.5.7