在主应用中更新显示驱动和 MQTT 主题

- 将显示驱动从 lvgl_st7735s_use 改为 lvgl_st7789_use，在 CMakeLists.txt 和 main.c 中。
- 将 MQTT 警报主题从“topic/alert/esp32_iothome_001”更新为“topic/alert/esp32_iothome_002”。
- 重构 UI 任务，去除周期性屏幕切换逻辑，专注于界面刷新。
- 调整错误处理，使新的显示驱动程序用于错误信息。

components/ui/screens.h

@@ -11,18 +11,12 @@ extern "C" {
 
 enum ScreensEnum {
     _SCREEN_ID_FIRST = 1,
-    SCREEN_ID_TEMPERATURE = 1,
-    SCREEN_ID_HUMIDITY = 2,
-    SCREEN_ID_MOISTURE = 3,
-    SCREEN_ID_INTENSITY = 4,
-    _SCREEN_ID_LAST = 4
+    SCREEN_ID_MAIN = 1,
+    _SCREEN_ID_LAST = 1
 };
 
 typedef struct _objects_t {
-    lv_obj_t *temperature;
-    lv_obj_t *humidity;
-    lv_obj_t *moisture;
-    lv_obj_t *intensity;
+    lv_obj_t *main;
     lv_obj_t *obj0;
     lv_obj_t *obj1;
     lv_obj_t *obj2;
@@ -34,22 +28,12 @@ typedef struct _objects_t {
     lv_obj_t *obj8;
     lv_obj_t *obj9;
     lv_obj_t *obj10;
-    lv_obj_t *obj11;
 } objects_t;
 
 extern objects_t objects;
 
-void create_screen_temperature();
-void tick_screen_temperature();
-
-void create_screen_humidity();
-void tick_screen_humidity();
-
-void create_screen_moisture();
-void tick_screen_moisture();
-
-void create_screen_intensity();
-void tick_screen_intensity();
+void create_screen_main();
+void tick_screen_main();
 
 void tick_screen_by_id(enum ScreensEnum screenId);
 void tick_screen(int screen_index);