0.2.0

Added

• Post-game end menu with four options:
  • 1 Play another game
  • 2 Reset scoreboard and play again
  • 3 Show scoreboard and return to menu
  • 4 Show final scoreboard and shutdown
• Runtime scoreboard reset support without rebooting:
  • Resets total games, draws, and wins for both sides
  • Preserves username and selected difficulty
• Kernel shutdown routine integrated into game flow:
  • Selecting No on the initial prompt now shuts down the VM
  • Quit option from end menu also triggers shutdown