Varaverk: arrange mode, folder management, rsync standalone, layout fixes

Scheduler UI:
- Arrange mode: drag scripts between orchs and reorder within arrays; right
  panel shows unassigned script pool; Save Arrangement commits to master.conf
- + Folder: named collapsible subfolders for Custom Scripts stored in schedule.json
- Rsync children: hide Run/Dry Run/Log/location when orch is ON; show standalone
  location + cron controls when orch is OFF; cron only fires when both filled
- Non-conf-managed children (transcode): toggles now show enabled when orch is on
- Right panel height sync: fix ResizeObserver feedback loop via align-self:flex-start
  on left panel and left.offsetHeight in vvFitRight
- How do I use this: updated to cover arrange, folders, rsync standalone, transcode

New API endpoints:
- board.php, clearlock.php, movescript.php, rawconf.php, readscript.php
- reorderarray.php, rsync_standalone.php, savefolders.php

run.php / dryrun.php: accept optional --location= arg for standalone rsync calls

Plugin/usr/local/emhttp/plugins/varaverk/api/dryrun.php

@@ -21,7 +21,14 @@ if (!is_dir($logDir)) mkdir($logDir, 0755, true);
 
 file_put_contents($logFile, "\n── " . date('Y-m-d H:i:s') . " [DRY RUN] ──────────────────────\n", FILE_APPEND);
 
-$flags = vv_job_flags($id);
-exec('nohup env DRY_RUN=1 bash ' . escapeshellarg($script) . ($flags ? " $flags" : '') . ' >> ' . escapeshellarg($logFile) . ' 2>&1 </dev/null &');
+$location = trim($_POST['location'] ?? '');
+if ($location && (!str_starts_with($location, '/') || str_contains($location, '..') || preg_match('/[\x00\n\r]/', $location))) {
+    echo json_encode(['ok' => false, 'error' => 'Invalid location']);
+    exit;
+}
+
+$flags  = vv_job_flags($id);
+$locArg = $location ? ' ' . escapeshellarg('--location=' . $location) : '';
+exec('nohup env DRY_RUN=1 bash ' . escapeshellarg($script) . ($flags ? " $flags" : '') . $locArg . ' >> ' . escapeshellarg($logFile) . ' 2>&1 </dev/null &');
 
 echo json_encode(['ok' => true]);