🎨 Palette: Enhance HUD achievement styling and prevent ANSI color bleed

[aidasofialily-cmd]

This micro-UX improvement enhances the visual presentation of personal best achievement notifications in the terminal UI and prevents active ANSI color sequences from leaking past mode status tags.

💡 What:

• Added explicit CLR_RESET after [HARD MODE] and [NORMAL MODE] output.
• Formatted the live HUD NEW BEST! milestone message with CLR_CTRL (Bold Yellow).
• Formatted post-game personal best summary message with CLR_CTRL and a celebratory 🎉 emoji.

🎯 Why:

• Prevents active mode color styles from leaking across the live terminal line into high scores and notifications.
• Gives high score achievements visual prominence and immediate celebratory feedback.

♿ Accessibility & Polish:

• High contrast bold yellow highlighting for milestone achievement notifications.
• Clean ANSI color boundary control.

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PR created automatically by Jules for task 696937347899313928 started by @aidasofialily-cmd

[google-labs-jules]

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