Add Rsync card to monitor page Row 3 (before GPU)

New span-1 card shows global RSYNC_ENABLED gate, per-window badges (C/D/I/W),
active profile names + elapsed time from lock files, and last-sync timestamp
per orchestrator window from script log files.

GPU shrunk from span 2 to span 1 to make room. Row 3 is now:
Rsync(1) | GPU(1) | Transcode(2) | Streams(4)

Plugin/unraid/api/monitor.php

@@ -28,6 +28,7 @@ echo json_encode([
     'disk_io'     => vv_disk_io_rates(),
     'watchdog'       => vv_watchdog_summary(),
     'scripts'        => vv_scripts_status(),
+    'rsync'          => vv_rsync_status(),
     'thresholds'     => vv_disk_thresholds(),
     'vms'            => vv_get_vms(),
     'docker_folders' => vv_get_docker_folders(),