GitLab

- Update homepage link to point to https://mineru.org.cn/home
- Add client download link for users to easily access the app- Change globe icon to home icon for homepage

- Update homepage link to point to https://mineru.org.cn/home
- Add client download link for users to easily access the app- Change globe icon to home icon for homepage

feat: add arXiv paper link to header and adjust PDF parsing logic- Add arXiv paper link to the header template for easy access to the latest research paper.
- Modify the PDF parsing logic to handle edge cases more accurately, particularly in determining the number of lines in a block based on its height.