🎨 Palette: Hide cursor during gameplay

[EiJackGH]

🎨 Palette: Hide Cursor During Gameplay

💡 What:
Added ANSI escape sequence \033[?25l to hide the cursor upon game start, and \033[?25h to explicitly restore the cursor upon any exit (normal completion, pressing 'q' to quit early, or via Ctrl+C interrupt signal).

🎯 Why:
During rapid interaction in CLI games where text input is not required, the terminal cursor constantly blinking is an unnecessary visual distraction. Removing it enhances immersion and focus.

📸 Before/After:
Before: The cursor continuously flashed on the game board while the UI updated.
After: The game space is entirely clean, displaying only the UI.

♿ Accessibility:
Ensures that if the user aborts the program (SIGINT), their terminal isn't broken (missing cursor), a common frustrating pitfall of terminal UX modifications.

---

PR created automatically by Jules for task 15968153585006894458 started by @EiJackGH

[google-labs-jules]

👋 Jules, reporting for duty! I'm here to lend a hand with this pull request.

When you start a review, I'll add a 👀 emoji to each comment to let you know I've read it. I'll focus on feedback directed at me and will do my best to stay out of conversations between you and other bots or reviewers to keep the noise down.

I'll push a commit with your requested changes shortly after. Please note there might be a delay between these steps, but rest assured I'm on the job!

For more direct control, you can switch me to Reactive Mode. When this mode is on, I will only act on comments where you specifically mention me with @jules. You can find this option in the Pull Request section of your global Jules UI settings. You can always switch back!

New to Jules? Learn more at jules.google/docs.

---

For security, I will only act on instructions from the user who triggered this task.