#pragma once

#include "esp_err.h"
#include <stddef.h>

/**
 * Execute set_timezone tool.
 * Sets the system timezone via NVS and updates the TZ environment variable.
 * Input JSON: {"timezone": "CST-8"} or {"timezone": "Asia/Shanghai"}
 */
esp_err_t tool_set_timezone_execute(const char *input_json, char *output, size_t output_size);