feat: add native Tomie adapter and strict import compatibility checks

frontend/src/pages/Play.tsx

@@ -1,6 +1,6 @@
 import { useEffect, useRef, useState } from "react";
 import { useNavigate, useParams } from "react-router-dom";
-import type { Engine } from "../player/engine";
+import type { PlayerHandle } from "../player";
 import { Icon } from "../ui/Icon";
 
 export function Play() {
@@ -11,7 +11,7 @@ export function Play() {
   const [error, setError] = useState("");
 
   useEffect(() => {
-    let engine: Engine | null = null;
+    let engine: PlayerHandle | null = null;
     let cancelled = false;
     // the player is a separate chunk: the library UI does not pay for it
     import("../player").then(({ launch }) =>