Add support for multiple ED2K links
Thanks to @federico-zb for the initial PR implementation!
- Updated server to handle multiple ED2K links in a single request
- Changed input field to textarea for better multi-line editing
- Enhanced UI placeholder to indicate multiple links support (one per line)
Improve Statistics charts and database maintenance
- Show day-month format on chart axes for 7D and 30D views
- Update tooltips to use formatted labels for better readability
- Reduce database cleanup retention from 365 to 30 days (aligned with displayed ranges)