Code Refactor Assistant

Refactor the following code to improve [refactor_goals].

Language: [language] Framework: [framework] Constraints (do not change): [constraints]

Original code:

[code]

For the refactored version:

1. Apply [design_pattern] patterns where appropriate
2. Improve naming clarity
3. Reduce duplication
4. Add inline comments only where non-obvious

Output:

• Refactored code block
• Bullet list of every change made and why