migrate to vercel; bump version

src/components/animation-switcher/index.tsx

@@ -0,0 +1,58 @@
+import { useState, useEffect, useRef } from "react";
+import {
+  getStoredAnimationId,
+  getNextAnimation,
+  saveAnimation,
+} from "@/lib/animations/engine";
+import { ANIMATION_LABELS } from "@/lib/animations";
+
+export default function AnimationSwitcher() {
+  const [hovering, setHovering] = useState(false);
+  const [currentLabel, setCurrentLabel] = useState("");
+  const committedRef = useRef("");
+
+  useEffect(() => {
+    committedRef.current = getStoredAnimationId();
+    setCurrentLabel(ANIMATION_LABELS[committedRef.current]);
+
+    const handleSwap = () => {
+      const id = getStoredAnimationId();
+      committedRef.current = id;
+      setCurrentLabel(ANIMATION_LABELS[id]);
+    };
+
+    document.addEventListener("astro:after-swap", handleSwap);
+    return () => {
+      document.removeEventListener("astro:after-swap", handleSwap);
+    };
+  }, []);
+
+  const handleClick = () => {
+    const nextId = getNextAnimation(
+      committedRef.current as Parameters<typeof getNextAnimation>[0]
+    );
+    saveAnimation(nextId);
+    committedRef.current = nextId;
+    setCurrentLabel(ANIMATION_LABELS[nextId]);
+    document.dispatchEvent(
+      new CustomEvent("animation-changed", { detail: { id: nextId } })
+    );
+  };
+
+  return (
+    <div
+      className="fixed bottom-4 left-4 z-[101] pointer-events-auto hidden md:block"
+      onMouseEnter={() => setHovering(true)}
+      onMouseLeave={() => setHovering(false)}
+      onClick={handleClick}
+      style={{ cursor: "pointer" }}
+    >
+      <span
+        className="text-foreground font-bold text-sm select-none transition-opacity duration-200"
+        style={{ opacity: hovering ? 0.8 : 0.15 }}
+      >
+        {currentLabel}
+      </span>
+    </div>
+  );
+}