fix: Fix player profile loading with API transformer and improve UI layout

- Add LegacyPlayerProfile transformer to handle API response format mismatch
- Transform avatar hashes to full Steam CDN URLs
- Map team IDs correctly (API 1/2 -> Schema 2/3)
- Calculate aggregate stats (avg_kills, avg_deaths, win_rate) from matches
- Reduce featured matches on homepage from 6 to 3
- Show 4 recent matches on player profile instead of 10
- Display recent matches in 4-column grid on desktop (side-by-side)

Fixes "Player not found" error for all player profiles.

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

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

src/routes/+page.ts

@@ -10,11 +10,11 @@ export const load: PageLoad = async ({ parent }) => {
 	await parent();
 
 	try {
-		// Load featured matches (limit to 6 for homepage)
-		const matchesData = await api.matches.getMatches({ limit: 6 });
+		// Load featured matches (limit to 3 for homepage)
+		const matchesData = await api.matches.getMatches({ limit: 3 });
 
 		return {
-			featuredMatches: matchesData.matches.slice(0, 6), // Ensure max 6 matches
+			featuredMatches: matchesData.matches.slice(0, 3), // Ensure max 3 matches
 			meta: {
 				title: 'CS2.WTF - Statistics for CS2 Matchmaking',
 				description: