🎨 Palette: Enhance CLI feedback and visual hierarchy

[ruhdevops]

💡 What: Added execution timing using time.perf_counter() and improved visual spacing/titles in the terminal output.
🎯 Why: Provides developers with immediate performance feedback and clearer navigational cues in the onboarding scripts.
♿ Accessibility: Improved visual hierarchy in the terminal for better screen reader and human scanning.

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PR created automatically by Jules for task 2561387699122932121 started by @ruh-al-tarikh

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