feat: revamp tutorial modal with multi-slide carousel and responsive UI

[SARFAS-P]

📌 Description

• 7-Slide Carousel: Expanded the tutorial into a comprehensive 7-slide sequence, including a new "Welcome" slide and detailed clue breakdowns (Rumi, Sandstorm, etc.).
• Responsive UI:
  • Desktop: Widened the modal (max-w-md) and optimized layouts to ensure all text is fully visible without scrolling.
  • Mobile: tailored specific layouts (reduced image sizes, tighter margins) to prevent text cutoff on smaller screens.
• Performance: Optimized the "Close" button to dismiss the modal immediately while syncing with the server in the background.
• Refinement: Adjusted footer controls (smaller buttons/dots on mobile) for a cleaner look.