feat(ui): unified motion language and interaction states

- Shared transition constants (view/modal/toast/tile) with standard ease-out
- MotionConfig reducedMotion=user plus CSS reduced-motion neutralizer
- Consistent hover/press/focus-visible states across all interactive classes

src/main.tsx

@@ -1,3 +1,4 @@
+import { MotionConfig } from "framer-motion";
 import React from "react";
 import ReactDOM from "react-dom/client";
 import App from "./App";
@@ -6,8 +7,10 @@ import "./index.css";
 
 ReactDOM.createRoot(document.getElementById("root")!).render(
   <React.StrictMode>
-    <ToastProvider>
-      <App />
-    </ToastProvider>
+    <MotionConfig reducedMotion="user">
+      <ToastProvider>
+        <App />
+      </ToastProvider>
+    </MotionConfig>
   </React.StrictMode>,
 );