添加人体门状态检测功能，包含初始化和读取状态的逻辑，并更新主程序以集成此功能

components/human_door/CMakeLists.txt

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+idf_component_register(SRCS "human_door.c"
+                    INCLUDE_DIRS "include"
+                    REQUIRES esp_driver_gpio)

components/human_door/human_door.c

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+#include "human_door.h"
+
+#include "driver/gpio.h"
+#include "esp_check.h"
+
+static const char *TAG = "human_door";
+static bool s_inited = false;
+
+esp_err_t human_door_init(void)
+{
+    if (s_inited) {
+        return ESP_OK;
+    }
+
+    gpio_config_t io_cfg = {
+        .pin_bit_mask = (1ULL << HUMAN_SENSOR_GPIO) | (1ULL << DOOR_SWITCH_GPIO),
+        .mode = GPIO_MODE_INPUT,
+        .pull_up_en = GPIO_PULLUP_ENABLE,
+        .pull_down_en = GPIO_PULLDOWN_DISABLE,
+        .intr_type = GPIO_INTR_DISABLE,
+    };
+    ESP_RETURN_ON_ERROR(gpio_config(&io_cfg), TAG, "gpio config failed");
+
+    s_inited = true;
+    return ESP_OK;
+}
+
+esp_err_t human_door_read(human_door_state_t *out_state)
+{
+    ESP_RETURN_ON_FALSE(out_state != NULL, ESP_ERR_INVALID_ARG, TAG, "out_state is null");
+    ESP_RETURN_ON_FALSE(s_inited, ESP_ERR_INVALID_STATE, TAG, "not initialized");
+
+    int human_level = gpio_get_level((gpio_num_t)HUMAN_SENSOR_GPIO);
+    int door_level = gpio_get_level((gpio_num_t)DOOR_SWITCH_GPIO);
+
+    out_state->human_present = (human_level != 0);
+    out_state->door_closed = (door_level == 0);
+    return ESP_OK;
+}

components/human_door/include/human_door.h

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+#pragma once
+
+#include <stdbool.h>
+
+#include "esp_err.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define HUMAN_SENSOR_GPIO 16
+#define DOOR_SWITCH_GPIO 17
+
+typedef struct {
+    bool human_present;
+    bool door_closed;
+} human_door_state_t;
+
+// GPIO16: HC-SR312. High means motion detected.
+// GPIO17: Door switch. Low means door closed.
+esp_err_t human_door_init(void);
+esp_err_t human_door_read(human_door_state_t *out_state);
+
+#ifdef __cplusplus
+}
+#endif