🎨 Palette: Improve dynamic terminal clearing with ANSI escape sequence

[EiJackGH]

💡 What: Replaced hardcoded space padding strings with the ANSI Erase in Line escape sequence (\033[K) after carriage returns (\r) in dynamic terminal output updates.
🎯 Why: To eliminate visual trailing text artifacts during rapid dynamic terminal string updates if the previous line text is longer than the new padding. This ensures a clean refresh on every render frame for elements like the countdown timer and active score without needing manual padding calculations.
♿ Accessibility: N/A (Visual polish).
📝 Journaled: Logged the UX insight regarding standardizing on ANSI clear sequences rather than padding logic for CLI terminal text erasure.

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PR created automatically by Jules for task 9189652303841362409 started by @EiJackGH

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