🎨 Palette: Use \033[K to clear trailing artifacts on dynamic CLI lines

[EiJackGH]

💡 What: Added the \033[K ANSI sequence (Erase in Line) immediately after a carriage return \r on dynamic output lines to cleanly erase previous characters without relying on hardcoded padding spaces. Updated .Jules/palette.md to log this critical learning.
🎯 Why: In CLI applications, updating lines in place dynamically with \r leaves trailing text behind when the new line is shorter than the previous line. Padding with whitespace is hacky and error-prone. \033[K provides a robust fix.
📸 Before/After: N/A, UI visual consistency is improved for string lengths that shrink dynamically.
♿ Accessibility: Ensures crisp and predictable visual text updates for users without visual artifacts.

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PR created automatically by Jules for task 12488439202030388727 started by @EiJackGH

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