feat: 实现时间同步、NVS稳定性修复和ESP-IDF v6.0兼容性改进

main/nvs_safety/nvs_safety.h

@@ -0,0 +1,11 @@
+#pragma once
+
+#include "esp_err.h"
+
+/**
+ * Check integrity of critical NVS namespaces at startup.
+ * Detects corrupted entries and attempts automatic repair.
+ *
+ * @return ESP_OK if all namespaces are healthy, ESP_ERR_INVALID_STATE if corruption was found and repaired
+ */
+esp_err_t nvs_safety_check(void);