Initial MVP: local visual novel library with Ren'Py → PGVN converter

- FastAPI backend: admin bootstrap with forced credential change, admin-created
  users with one-time generated passwords, roles as permission sets
- Games and versions with content-addressed blob storage; forks copy only the
  manifest, so mods share assets with the original
- Worker: archive/RPA extraction, unrpyc for .rpyc, own .rpy parser, Python
  subset translated via ast, media converted to WebP/Opus/WebM
- React panel (library search, game page, upload, users, roles) and a
  framework-free web player with saves, history, skip/auto, transitions
- docker compose: postgres, backend, worker, nginx on a single HTTP port

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

frontend/src/pages/Play.tsx

@@ -0,0 +1,42 @@
+import { useEffect, useRef, useState } from "react";
+import { useNavigate, useParams } from "react-router-dom";
+import type { Engine } from "../player/engine";
+
+export function Play() {
+  const { versionId } = useParams();
+  const navigate = useNavigate();
+  const host = useRef<HTMLDivElement>(null);
+  const [status, setStatus] = useState("Загрузка…");
+  const [error, setError] = useState("");
+
+  useEffect(() => {
+    let engine: Engine | null = null;
+    let cancelled = false;
+    // the player is a separate chunk: the library UI does not pay for it
+    import("../player").then(({ launch }) =>
+      launch(host.current!, Number(versionId), () => navigate(-1), setStatus),
+    ).then((e) => {
+      if (cancelled) e.destroy();
+      else {
+        engine = e;
+        setStatus("");
+      }
+    }).catch((e) => setError((e as Error).message));
+    return () => {
+      cancelled = true;
+      engine?.destroy();
+    };
+  }, [versionId, navigate]);
+
+  return (
+    <div className="play">
+      <div ref={host} className="play-host" />
+      {(status || error) && (
+        <div className="play-status">
+          {error ? <span className="error">{error}</span> : status}
+          {error && <button onClick={() => navigate(-1)}>Назад</button>}
+        </div>
+      )}
+    </div>
+  );
+}