alldebrid plugin optimization and mpv playlist fix

cmdnat/pipe.py

@@ -1454,6 +1454,13 @@ def _queue_items(
     except Exception:
         pass
 
+    # Batched queue operations should not block on one IPC reply per item.
+    # On Windows named pipes, waiting for every `loadfile`/`loadlist` ack can
+    # make multi-select `.mpv` calls stall for several seconds.
+    command_wait = bool(wait)
+    if len(items) > 1:
+        command_wait = False
+
     # Just verify cookies are configured, don't try to set via IPC
     _ensure_ytdl_cookies(config)
 
@@ -1683,8 +1690,8 @@ def _queue_items(
                 "request_id": 200
             }
             try:
-                debug(f"Sending MPV {command_name}: {target_to_send} mode={mode} wait={wait}")
-                resp = _send_ipc_command(cmd, silent=True, wait=wait)
+                debug(f"Sending MPV {command_name}: {target_to_send} mode={mode} wait={command_wait}")
+                resp = _send_ipc_command(cmd, silent=True, wait=command_wait)
                 debug(f"MPV {command_name} response: {resp}")
             except Exception as e:
                 debug(f"Exception sending {command_name} to MPV: {e}", file=sys.stderr)