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/readscript.php

@@ -0,0 +1,20 @@
+<?php
+// Read-only endpoint: return full content of any script in SCRIPTS_DIR.
+header('Content-Type: application/json');
+require_once dirname(__DIR__) . '/include/config.php';
+
+$id = trim($_GET['id'] ?? '');
+
+// Must be relative path within SCRIPTS_DIR, no traversal, must end in .sh or .md
+if (!$id || str_contains($id, '..') || !preg_match('/^[A-Za-z0-9_.\-\/]+\.(sh|md)$/', $id)) {
+    echo json_encode(['ok' => false, 'error' => 'Invalid id']);
+    exit;
+}
+
+$path = SCRIPTS_DIR . '/' . $id;
+if (!file_exists($path)) {
+    echo json_encode(['ok' => false, 'error' => 'Not found']);
+    exit;
+}
+
+echo json_encode(['ok' => true, 'content' => file_get_contents($path)]);