Add live download progress updates

backend/app/services/snapshot.py

@@ -382,14 +382,14 @@ def _artwork_url(path: Optional[str], size: str, cache_mode: str) -> Optional[st
     return f"https://image.tmdb.org/t/p/{size}{path}"
 
 
-def _torrent_progress(torrent: Dict[str, Any]) -> Optional[int]:
+def _torrent_progress(torrent: Dict[str, Any]) -> Optional[float]:
     progress = torrent.get("progress")
     try:
         numeric = float(progress)
     except (TypeError, ValueError):
         numeric = -1
     if 0 <= numeric <= 1:
-        return round(numeric * 100)
+        return round(numeric * 100, 1)
     try:
         size = float(torrent.get("size"))
         amount_left = float(torrent.get("amount_left"))
@@ -397,7 +397,7 @@ def _torrent_progress(torrent: Dict[str, Any]) -> Optional[int]:
         return None
     if size <= 0:
         return None
-    return max(0, min(100, round(((size - amount_left) / size) * 100)))
+    return max(0.0, min(100.0, round(((size - amount_left) / size) * 100, 1)))
 
 
 def _build_presentation(