fix: require qBittorrent metainfo export support

src/archive_clients/services.py

@@ -159,7 +159,9 @@ def _supported_qb_version(version: str) -> bool:
     if match is None:
         return False
     major, minor = int(match.group(1)), int(match.group(2))
-    return major == 5 or (major == 4 and minor in {4, 5, 6})
+    # torrents/export, required to preserve exact metainfo before staging,
+    # was introduced in qBittorrent 4.5.0.
+    return major == 5 or (major == 4 and minor in {5, 6})
 
 
 def _text_get(