- Replace Braille spinner with classic ASCII spinner (|/-\)
- Update calendar banner: [CAL] NBTCA CALENDAR [CAL]
- Update tools banner: [TOOL] NBTCA UTILITY TOOLS [TOOL]
- Replace event status icons: * for today, v for past, ○ for upcoming
- Update menu items: [CAL] Calendar, [X] Exit
- Replace location emoji with @ symbol
- Ensure compatibility across all terminal environments including legacy systems
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Refactored the calendar functionality into a separate Calendar class.
Created a TUI portal in main.cpp to allow for future feature expansion.
The TUI portal provides a menu to select different features, with the calendar being the first one.
Updated the build system to include the new files.
