feat: add native Tomie adapter and strict import compatibility checks

backend/app/routers/versions.py

@@ -93,6 +93,8 @@ async def upload_version(
     version.status = "queued"
     version.progress = "В очереди на проверку совместимости"
     version.report = {"engine": probe["engine"], "compatible": None}
+    if getattr(game, "main_version_id", None) is None:
+        game.engine = probe["engine"]
     version.size_bytes = size
     await db.commit()
     return version