feat: optimize mappool loading; sort by average star rating and streamline query

src/routes/(app)/mappools/+page.server.ts

@@ -6,10 +6,12 @@ import { mappool } from '$lib/server/db/schema';
 export const load: PageServerLoad = async ({ locals }) => {
 	if (!locals.user) redirect(302, '/');
 
-	const mappools = await db.query.mappool.findMany({
-		with: { slots: true },
-		orderBy: (m, { desc }) => [desc(m.createdAt)]
-	});
+	const mappools = await db.query.mappool.findMany({ with: { slots: true } });
+
+	const avgSR = (m: typeof mappools[0]) =>
+		m.slots.length ? m.slots.reduce((s, sl) => s + (sl.starRating ?? 0), 0) / m.slots.length : 0;
+
+	mappools.sort((a, b) => avgSR(b) - avgSR(a));
 
 	return { mappools };
 };