Scheduler: Run button, single card-level Save, remove per-row Save

- Run button (blue) fires script immediately, opens log panel;
  stamps log with manual run timestamp before exec
- Save moved to card footer — one button saves all cron expressions
  for the orchestrator and all its children at once
- Toggle still auto-saves immediately on flip (enable/disable is instant)
- Removed onblur from cron inputs — cron only saves on explicit Save
- api/run.php: validates id, appends timestamp, execs script in background

Plugin/usr/local/emhttp/plugins/varaverk/api/run.php

@@ -0,0 +1,28 @@
+<?php
+header('Content-Type: application/json');
+require_once dirname(__DIR__) . '/include/scheduler.php';
+
+$body = json_decode(file_get_contents('php://input'), true);
+$id   = trim($body['id'] ?? '');
+
+if (!$id || !preg_match('/^[a-zA-Z0-9_.\/\-]+\.sh$/', $id) || str_contains($id, '..')) {
+    echo json_encode(['ok' => false, 'error' => 'Invalid id']);
+    exit;
+}
+
+$script = SCRIPTS_DIR . '/' . $id;
+if (!file_exists($script)) {
+    echo json_encode(['ok' => false, 'error' => 'Script not found: ' . $id]);
+    exit;
+}
+
+$logFile = vv_job_log_path($id);
+$logDir  = dirname($logFile);
+if (!is_dir($logDir)) mkdir($logDir, 0755, true);
+
+// Stamp the log so the panel shows when the run started
+file_put_contents($logFile, date('[Y-m-d H:i:s]') . " Manual run started\n", FILE_APPEND);
+
+exec('bash ' . escapeshellarg($script) . ' >> ' . escapeshellarg($logFile) . ' 2>&1 &');
+
+echo json_encode(['ok' => true]);