feat: unlock in-game galleries per owned version

backend/app/routers/games.py

@@ -8,6 +8,7 @@ from starlette.concurrency import run_in_threadpool
 
 from app.blobs import blob_path, put_bytes
 from app.deps import DB, CurrentUser, has_perm, require
+from app.gallery import available as gallery_available
 from app.models import Game, GameVersion, User
 from app.schemas import GameDetailOut, GameIn, GameOut, GameUpdateIn, VersionOut
 from app.translation import version_languages
@@ -114,7 +115,8 @@ async def game_detail(game_id: int, user: Player, db: DB) -> dict:
         )
     ).all()
     return {**GameOut.model_validate(game).model_dump(),
-            "versions": [{**VersionOut.model_validate(v).model_dump(), **version_languages(v.manifest)}
+            "versions": [{**VersionOut.model_validate(v).model_dump(), **version_languages(v.manifest),
+                          "gallery_available": gallery_available(v.manifest)}
                          for v in versions]}