fix: Increase rank icon sizes further for better readability

- sm: 10x10 → 14x14 (56px, used in scoreboard)
- md: 12x12 → 16x16 (64px)
- lg: 16x16 → 20x20 (80px)

Icons now prominently visible in Rating column.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/lib/components/ui/RankIcon.svelte

@@ -37,9 +37,9 @@
 	};
 
 	const sizeClasses = {
-		sm: 'h-10 w-10',
+		sm: 'h-14 w-14',
-		md: 'h-12 w-12',
+		md: 'h-16 w-16',
-		lg: 'h-16 w-16'
+		lg: 'h-20 w-20'
 	};
 
 	const labelSizeClasses = {