Path Handling Improvements

• Improved handling of relative paths for file_path, file_path_backup, and setting_font_path, automatically resolving them based on snapshot_folder, backup_folder, and font_folder.
• Added automatic .ttf extension handling for setting_font_path if no file extension is provided.
• Enhanced error logging for invalid or inaccessible paths, ensuring better debugging and reliability.
• Ensured that missing backup directories are created automatically to prevent failures.

These updates improve flexibility and ensure more robust path management for snapshots and font files.

Full Changelog: 2025.2.2.7...2025.2.2.8