Skip cover/metadata scraping for NoPayStation themes and DLC

app/covers.py

@@ -30,6 +30,15 @@ _PLATFORMS = {
     "ps1": {"libretro_repo": "Sony_-_PlayStation", "igdb_id": 7, "ss_id": "57"},
 }
 
+# Content types that have no meaningful cover/metadata (IGDB/etc. lookups
+# return unrelated games, so scraping is disabled for them).
+NON_COVER_SYSTEMS = {"theme", "dlc"}
+
+
+def is_scrapable(system):
+    """Whether cover/metadata scraping makes sense for this item type."""
+    return (system or "games") not in NON_COVER_SYSTEMS
+
 
 def _platform(system):
     """Platform parameters (libretro repo, IGDB id, ScreenScraper id)."""
@@ -1142,6 +1151,8 @@ def fetch_cover(name, release_id, system, timeout=10, quick=False):
     ``quick`` limits the game fallback to libretro only (index-driven and fast),
     for bulk store loading; details views use the full IGDB/ScreenScraper path.
     """
+    if not is_scrapable(system):
+        return None
     dest = cover_path(release_id, system)
     if dest.exists():
         if file_is_image(dest):