Fixed Themes not showing

src/lib/rate-limit.ts

@@ -0,0 +1,31 @@
+const attempts = new Map<string, { count: number; resetAt: number }>()
+
+export function checkRateLimit(
+  key: string,
+  maxAttempts = 5,
+  windowMs = 60000,
+): { allowed: boolean; remaining: number; resetAt: number } {
+  const now = Date.now()
+  const entry = attempts.get(key)
+
+  if (!entry || now > entry.resetAt) {
+    attempts.set(key, { count: 1, resetAt: now + windowMs })
+    return { allowed: true, remaining: maxAttempts - 1, resetAt: now + windowMs }
+  }
+
+  entry.count++
+
+  if (entry.count > maxAttempts) {
+    return { allowed: false, remaining: 0, resetAt: entry.resetAt }
+  }
+
+  return { allowed: true, remaining: maxAttempts - entry.count, resetAt: entry.resetAt }
+}
+
+// Cleanup stale entries every 5 minutes
+setInterval(() => {
+  const now = Date.now()
+  for (const [key, entry] of attempts) {
+    if (now > entry.resetAt) attempts.delete(key)
+  }
+}, 300000)