Add performance optimizations and component refactors

- Cache read-heavy public API routes via redisCache (leaderboard, values,
  shop, articles, photos, guilds, teams, staff, users, home, radio, badges)
- Add single-flight and bounded-memory cache layer with unit tests
- Parallelize independent DB queries on search, rares, shop, staff, polls
  and profile pages
- Push radio points leaderboard aggregation to SQL with a LIMIT
- Split studio-client and import-furni-client into focused modules
- Clean up next.config.ts

src/app/(site)/staff/page.tsx

@@ -27,9 +27,9 @@ export default async function StaffPage() {
 	const minStaffRank =
 		Number(await siteSettings.get("min_staff_rank", "7")) || 7;
 
-	let staff: StaffMember[] = [];
-	try {
-		staff = await db
+	// Independent queries — staff members and teams load concurrently.
+	const [staff, teams] = await Promise.all([
+		db
 			.select({
 				username: User.username,
 				look: User.look,
@@ -39,14 +39,9 @@ export default async function StaffPage() {
 			.from(User)
 			.where(gte(User.rank, minStaffRank))
 			.orderBy(desc(User.rank), asc(User.username))
-			.limit(100);
-	} catch {
-		staff = [];
-	}
-
-	let teams: Team[] = [];
-	try {
-		const rows = await db
+			.limit(100)
+			.catch((): StaffMember[] => []),
+		db
 			.select({
 				id: WebsiteTeams.id,
 				rankName: WebsiteTeams.rankName,
@@ -56,11 +51,10 @@ export default async function StaffPage() {
 			})
 			.from(WebsiteTeams)
 			.where(eq(WebsiteTeams.hiddenRank, false))
-			.orderBy(asc(WebsiteTeams.id));
-		teams = rows.map((row) => ({ ...row, id: String(row.id) }));
-	} catch {
-		teams = [];
-	}
+			.orderBy(asc(WebsiteTeams.id))
+			.then((rows) => rows.map((row) => ({ ...row, id: String(row.id) })))
+			.catch((): Team[] => []),
+	]);
 
 	return (
 		<main style={{ display: "grid", gap: "1.5rem" }}>