feat: add interactive tip cycling on click with hover effect

[R44VC0RP]

Summary

• Add interactive tip cycling - users can click on tips to cycle through them
• Add hover underline effect to indicate tips are interactive
• Convert tip display to use reactive signals for state management

Changes

• Added index signal to track current tip
• Added hover signal for hover state
• Added cycle() function to advance through tips
• Added mouse event handlers (onMouseOver, onMouseOut, onMouseUp)
• Converted static parts to reactive createMemo for dynamic updates
• Added underline style on hover for visual feedback

Testing

Tested locally with bun dev - tips now cycle on click and show underline on hover.