Senda 0.2.5 beta

Senda 0.2.5 beta

• Added recent files to Home, with application icons and direct opening.
• Improved Time logs: non-overlapping timers, real/optimized duration, export to PDF/Excel, and visible-history limits.
• Added optional automatic backups, backup on close, scheduled backups, maximum backup count, and time-log backup/import.
• Added compact Health status and Activity history in Settings.
• Improved tray icon behavior with localized text and launcher actions.
• Updated documentation with a new What's New / Novedades section.
• General polish and cleanup for the public release package.