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/settings.php

@@ -0,0 +1,23 @@
+<?php
+header('Content-Type: application/json');
+
+$scriptsDir = trim($_POST['scripts_dir'] ?? '');
+
+if (!$scriptsDir) {
+    echo json_encode(['ok' => false, 'error' => 'scripts_dir is required']);
+    exit;
+}
+
+if (!is_dir($scriptsDir)) {
+    echo json_encode(['ok' => false, 'error' => 'Directory does not exist']);
+    exit;
+}
+
+$cfgFile = '/boot/config/plugins/varaverk/varaverk.cfg';
+$cfgDir  = dirname($cfgFile);
+if (!is_dir($cfgDir)) mkdir($cfgDir, 0755, true);
+
+$content = 'SCRIPTS_DIR="' . addslashes($scriptsDir) . '"' . "\n";
+$ok = file_put_contents($cfgFile, $content) !== false;
+
+echo json_encode(['ok' => $ok, 'error' => $ok ? null : 'Failed to write cfg file']);