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/include/scheduler.php

@@ -82,6 +82,24 @@ function vv_cron_rebuild(array $schedule): bool {
     }
     $lines[] = "";
 
+    // Standalone rsync entries: fire when orch is disabled but location + cron are both configured.
+    $scriptsDir = SCRIPTS_DIR;
+    foreach ($schedule as $key => $entry) {
+        if (!str_starts_with((string)$key, '__rsync_')) continue;
+        $orchId   = $entry['orch_id']  ?? '';
+        $location = $entry['location'] ?? '';
+        $cron     = $entry['cron']     ?? '';
+        if (!$orchId || !$location || !$cron) continue;
+        // Skip if orch is still enabled
+        if (!empty($schedule[$orchId]['enabled'])) continue;
+        $rsyncScript = "$scriptsDir/Rsync/rsync.sh";
+        if (!file_exists($rsyncScript)) continue;
+        $locArg  = escapeshellarg('--location=' . $location);
+        $logFlag = !empty($entry['log_enabled']) ? ' --log' : '';
+        $lines[] = "$cron bash \"$runner\" \"Rsync/rsync.sh\" \"$rsyncScript\" $locArg$logFlag";
+    }
+    $lines[] = "";
+
     // Write to the plugin cron file; update_cron merges all plugin *.cron files into /etc/cron.d/root.
     if (file_put_contents(CRON_FILE, implode("\n", $lines)) === false) return false;
     exec('/usr/local/sbin/update_cron');
@@ -210,6 +228,59 @@ function vv_custom_scripts(): array {
     return $scripts;
 }
 
+// Load rsync standalone config (location + cron) for a flag name from schedule.json.
+function vv_rsync_standalone(string $flagName): array {
+    $s = vv_schedule_load();
+    $r = $s['__rsync_' . $flagName] ?? [];
+    return [
+        'location' => (string)($r['location'] ?? ''),
+        'cron'     => (string)($r['cron']     ?? ''),
+    ];
+}
+
+// Extract *_SCRIPTS array variable names that an orchestrator iterates over.
+function vv_orch_conf_arrays(string $orchPath): array {
+    $content = file_get_contents($orchPath) ?: '';
+    preg_match_all('/\$\{([A-Z_]+_SCRIPTS)\[@\]\}/', $content, $refs);
+    return array_unique($refs[1] ?? []);
+}
+
+// Return .sh scripts that exist in SCRIPTS_DIR but are not referenced in any
+// master.conf *_SCRIPTS array and are not orchestrators or custom scripts.
+function vv_script_library(): array {
+    $scriptsDir = SCRIPTS_DIR;
+    $confMap    = vv_conf_script_map();
+    $orchIds    = [];
+    foreach (glob("$scriptsDir/Orchestrators/*.sh") ?: [] as $p) {
+        $orchIds[] = 'Orchestrators/' . basename($p);
+    }
+    $exclude = ['Plugin', '.git', 'Orchestrators', 'Custom', 'Configurations'];
+    $library = [];
+    try {
+        $ri   = new RecursiveIteratorIterator(
+            new RecursiveDirectoryIterator($scriptsDir, RecursiveDirectoryIterator::SKIP_DOTS)
+        );
+        $base = rtrim($scriptsDir, '/') . '/';
+        foreach ($ri as $rf) {
+            if (!$rf->isFile() || strtolower($rf->getExtension()) !== 'sh') continue;
+            $rel   = ltrim(str_replace($base, '', $rf->getPathname()), '/');
+            $parts = explode('/', $rel);
+            if (count($parts) < 2 || in_array($parts[0], $exclude)) continue;
+            if (in_array($rel, $orchIds) || isset($confMap[$rel])) continue;
+            $library[] = ['id' => $rel, 'label' => basename($rel, '.sh')];
+        }
+    } catch (Exception $e) {}
+    usort($library, fn($a, $b) => strcmp($a['id'], $b['id']));
+    return $library;
+}
+
+// Load custom-script folder assignments from schedule.json (__folders key).
+function vv_folders_load(): array {
+    $s = vv_schedule_load();
+    $f = $s['__folders'] ?? [];
+    return is_array($f) ? $f : [];
+}
+
 // Walk the scripts repo and return the job tree:
 // hardcoded array-event entries first, then cron-scheduled orchestrators
 function vv_job_tree(): array {
@@ -260,6 +331,7 @@ function vv_job_tree(): array {
             'suggested_cron'  => $suggested['cron'],
             'suggested_label' => $suggested['label'],
             'children'        => vv_script_children($path, $schedule),
+            'conf_arrays'     => vv_orch_conf_arrays($path),
         ];
     }
     return $orchs;
@@ -411,6 +483,7 @@ function vv_script_children(string $orchPath, array $schedule): array {
             'log_enabled'     => (bool)($entry['log_enabled'] ?? false),
             'conf_managed'    => $conf['managed'],
             'conf_enabled'    => $conf['enabled'],  // null if not in any *_SCRIPTS array
+            'conf_array'      => $conf['array'],
             'suggested_cron'  => $suggested['cron'],
             'suggested_label' => $suggested['label'],
         ];
@@ -447,3 +520,63 @@ function vv_script_children(string $orchPath, array $schedule): array {
 
     return $children;
 }
+
+// Extract the comment header block from a bash script (shebang + all leading comment lines).
+// Returns raw lines with # markers intact.
+function vv_script_header(string $path): string {
+    if (!file_exists($path)) return '';
+    $lines = array_slice(file($path) ?: [], 0, 80);
+    $out   = [];
+    foreach ($lines as $line) {
+        $t = rtrim($line);
+        if (str_starts_with($t, '#') || ($out === [] && str_starts_with($t, '#!'))) {
+            $out[] = $t;
+        } elseif ($t === '' && !empty($out)) {
+            $out[] = $t; // allow blank lines within header
+        } else {
+            break;
+        }
+    }
+    // Trim trailing blank lines
+    while (!empty($out) && trim(end($out)) === '') array_pop($out);
+    return implode("\n", $out);
+}
+
+// Strip the leading # marker from each line of a script header for cleaner display.
+// Also drops the shebang line (#!/bin/bash) since it's not informative in this context.
+function vv_script_header_clean(string $path): string {
+    $raw   = vv_script_header($path);
+    if (!$raw) return '';
+    $lines = explode("\n", $raw);
+    $out   = [];
+    foreach ($lines as $line) {
+        if (str_starts_with($line, '#!')) continue; // shebang — not useful in header display
+        $out[] = preg_replace('/^#\s?/', '', $line); // strip # and optional space
+    }
+    while (!empty($out) && trim(end($out)) === '') array_pop($out);
+    return implode("\n", $out);
+}
+
+// Read a named section from a markdown file.
+// Calls $matcher(heading, isIntro) where isIntro=true for content before the first heading.
+// Returns the first matching section body, capped at $maxChars.
+function vv_readme_section(string $readmePath, callable $matcher, int $maxChars = 3000): string {
+    if (!file_exists($readmePath)) return '';
+    $content = file_get_contents($readmePath) ?: '';
+    $parts   = preg_split('/^(#{1,4}[^\n]*)/m', $content, -1, PREG_SPLIT_DELIM_CAPTURE);
+    $heading = '';
+    $isIntro = true;
+    foreach ($parts as $i => $part) {
+        if ($i % 2 === 1) {
+            $heading = trim(preg_replace('/^#{1,4}\s*/', '', $part));
+            $isIntro = false;
+            continue;
+        }
+        $body = trim($part);
+        if ($body === '') continue;
+        if ($matcher($heading, $isIntro)) {
+            return strlen($body) > $maxChars ? substr($body, 0, $maxChars) . "\n[…]" : $body;
+        }
+    }
+    return '';
+}