Varaverk: FallBack + Watchdog tabs; plugin path restructure to Plugin/unraid/

- FallBack tab: per-node tier inventory + active fallback card with duration, tier, handback strikes, running container status
- Watchdog tab: live system health (RAM bar + thresholds, load, uptime, daemon), docker watchdog strikes + skip list + restart history, stability strikes + reboot log, resource pressure alert card, config inventory (mem limits, required, pause/stop lists)
- Swapped partnership/arrs tab order; FallBack between partnership and watchdog
- Plugin source tree moved from Plugin/usr/local/emhttp/plugins/varaverk/ to Plugin/unraid/
- Deployment/ conf templates added

Plugin/unraid/api/savefolders.php

@@ -0,0 +1,41 @@
+<?php
+// Save custom-script folder assignments to schedule.json (__folders key).
+// POST: folders (JSON-encoded object: {"FolderName": ["Custom/script.sh", ...]})
+header('Content-Type: application/json');
+require_once dirname(__DIR__) . '/include/config.php';
+require_once dirname(__DIR__) . '/include/scheduler.php';
+
+if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
+    echo json_encode(['ok' => false, 'error' => 'POST only']);
+    exit;
+}
+
+$raw     = $_POST['folders'] ?? '';
+$decoded = json_decode($raw, true);
+if (!is_array($decoded)) {
+    echo json_encode(['ok' => false, 'error' => 'Invalid JSON']);
+    exit;
+}
+
+$clean = [];
+foreach ($decoded as $name => $scripts) {
+    $name = trim((string)$name);
+    if (!$name || strlen($name) > 80) continue;
+    if (!is_array($scripts)) continue;
+    $cleanScripts = [];
+    foreach ($scripts as $s) {
+        $s = trim((string)$s);
+        if (!$s || str_contains($s, '..') || !preg_match('/^[A-Za-z0-9_.\-\/]+\.sh$/', $s)) continue;
+        $cleanScripts[] = $s;
+    }
+    $clean[$name] = $cleanScripts;
+}
+
+$schedule = vv_schedule_load();
+$schedule['__folders'] = $clean;
+if (!vv_schedule_save($schedule)) {
+    echo json_encode(['ok' => false, 'error' => 'Write failed']);
+    exit;
+}
+
+echo json_encode(['ok' => true]);