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/scheduler.php

@@ -0,0 +1,45 @@
+<?php
+header('Content-Type: application/json');
+require_once dirname(__DIR__) . '/include/scheduler.php';
+
+// Batch save — all entries in one load/write/rebuild cycle
+if (!empty($_POST['batch'])) {
+    $entries = json_decode($_POST['batch'], true) ?: [];
+    $clean   = [];
+    foreach ($entries as $e) {
+        $id   = trim($e['id'] ?? '');
+        $cron = trim($e['cron'] ?? '');
+        if (!$id) continue;
+        if ($cron && !in_array($cron, ['array_start', 'array_stop'], true)
+                  && !preg_match('/^(\S+\s+){4}\S+$/', $cron)) $cron = '';
+        $clean[] = [
+            'id'          => $id,
+            'enabled'     => ($e['enabled'] ?? '0') === '1',
+            'cron'        => $cron,
+            'log_enabled' => ($e['log_enabled'] ?? '0') === '1',
+        ];
+    }
+    $ok = vv_schedule_update_batch($clean);
+    echo json_encode(['ok' => $ok, 'error' => $ok ? null : 'Failed to write schedule']);
+    exit;
+}
+
+$id          = trim($_POST['id']      ?? '');
+$enabled     = (bool)($_POST['enabled'] ?? false);
+$cron        = trim($_POST['cron']    ?? '');
+$log_enabled = ($_POST['log_enabled'] ?? '0') === '1';
+
+if (!$id) {
+    echo json_encode(['ok' => false, 'error' => 'Missing id']);
+    exit;
+}
+
+// Basic cron validation — 5 fields, or known @event trigger, or empty
+if ($cron && !in_array($cron, ['array_start', 'array_stop'], true)
+         && !preg_match('/^(\S+\s+){4}\S+$/', $cron)) {
+    echo json_encode(['ok' => false, 'error' => 'Invalid cron expression']);
+    exit;
+}
+
+$ok = vv_schedule_update($id, $enabled, $cron, $log_enabled);
+echo json_encode(['ok' => $ok, 'error' => $ok ? null : 'Failed to write schedule']);