Add RESTART command for master and slaves via ESP-NOW.

UART RESTART (client_id 0 = local reboot, >0 = unicast); dashboard and CLI hooks; delayed esp_restart after response.

Co-authored-by: Cursor <cursoragent@cursor.com>

main/pod_reboot.c

@@ -0,0 +1,23 @@
+#include "pod_reboot.h"
+#include "esp_log.h"
+#include "esp_system.h"
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+
+static const char *TAG = "[REBOOT]";
+
+#define POD_RESTART_DELAY_MS 150
+
+static void restart_task(void *param) {
+  (void)param;
+  vTaskDelay(pdMS_TO_TICKS(POD_RESTART_DELAY_MS));
+  ESP_LOGI(TAG, "restarting");
+  esp_restart();
+}
+
+void pod_schedule_restart(void) {
+  if (xTaskCreate(restart_task, "pod_restart", 2048, NULL, 5, NULL) != pdPASS) {
+    ESP_LOGE(TAG, "failed to create restart task");
+    esp_restart();
+  }
+}