Revert "fix: insecure randomness"

src/lib/generateUserId.ts

@@ -1,8 +1,5 @@
-import { randomBytes } from 'crypto';
-
 export const generateUserId = () => {
-	const secureRandomString = randomBytes(8).toString('base36').substr(0, 9);
+	const userId = 'user_' + Date.now() + '_' + Math.random().toString(36).substr(2, 9);
-	const userId = 'user_' + Date.now() + '_' + secureRandomString;
 
 	return userId;
 };