migrate to vercel; bump version

src/components/animate-in.tsx

@@ -0,0 +1,50 @@
+import { useEffect, useRef, useState } from "react";
+
+interface AnimateInProps {
+  children: React.ReactNode;
+  delay?: number;
+  threshold?: number;
+}
+
+export function AnimateIn({ children, delay = 0, threshold = 0.15 }: AnimateInProps) {
+  const ref = useRef<HTMLDivElement>(null);
+  const [visible, setVisible] = useState(false);
+
+  useEffect(() => {
+    const el = ref.current;
+    if (!el) return;
+
+    const rect = el.getBoundingClientRect();
+    if (rect.top < window.innerHeight && rect.bottom > 0) {
+      requestAnimationFrame(() => setVisible(true));
+      return;
+    }
+
+    const observer = new IntersectionObserver(
+      ([entry]) => {
+        if (entry.isIntersecting) {
+          setVisible(true);
+          observer.disconnect();
+        }
+      },
+      { threshold }
+    );
+
+    observer.observe(el);
+    return () => observer.disconnect();
+  }, [threshold]);
+
+  return (
+    <div
+      ref={ref}
+      className="transition-all duration-700 ease-out"
+      style={{
+        transitionDelay: `${delay}ms`,
+        opacity: visible ? 1 : 0,
+        transform: visible ? "translateY(0)" : "translateY(24px)",
+      }}
+    >
+      {children}
+    </div>
+  );
+}