🎨 Palette: CLI UX Improvements and Input Robustness

[google-labs-jules]

This PR introduces several micro-UX improvements to the project's CLI:

💡 What:

• Robust Input Handling: The name argument is now stripped of whitespace. If the result is empty, it defaults to "World".
• Actionable Error Messages: When a name exceeds the 100-character limit, the error message now explicitly states the provided length (e.g., "Name too long (101/100 characters)").
• Visual Delight: The user's name in the greeting is now highlighted in cyan and bold, creating a pleasant visual distinction from the rest of the message.
• Documentation: Initialized the .jules/palette.md journal to track UX-focused learnings.

🎯 Why:

• Prevents awkward greetings like "Hello ! 👋" when users accidentally include spaces.
• Helps users understand why their input was rejected by providing specific feedback.
• Enhances the "feel" of the CLI with subtle color-coding of dynamic values.

♿ Accessibility:

• Improved error message clarity provides better context for users of all types.
• Visual hierarchy helps distinguish between system text and user-provided data.

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PR created automatically by Jules for task 11217673163348764002 started by @amrabed

[google-labs-jules]

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud