feat: Add lvgl display theme control (#1180)

* feat: Add lvgl display theme control

* fix: compiling errors

* move light/dark themes to lcd display

* fix compile errors

---------

Co-authored-by: Xiaoxia <terrence.huang@tenclass.com>

main/display/lcd_display.h

@@ -1,7 +1,7 @@
 #ifndef LCD_DISPLAY_H
 #define LCD_DISPLAY_H
 
-#include "display.h"
+#include "lvgl_display.h"
 
 #include <esp_lcd_panel_io.h>
 #include <esp_lcd_panel_ops.h>
@@ -12,21 +12,8 @@
 
 #define PREVIEW_IMAGE_DURATION_MS 5000
 
-// Theme color structure
-struct ThemeColors {
-    lv_color_t background;
-    lv_color_t text;
-    lv_color_t chat_background;
-    lv_color_t user_bubble;
-    lv_color_t assistant_bubble;
-    lv_color_t system_bubble;
-    lv_color_t system_text;
-    lv_color_t border;
-    lv_color_t low_battery;
-};
 
-
-class LcdDisplay : public Display {
+class LcdDisplay : public LvglDisplay {
 protected:
     esp_lcd_panel_io_handle_t panel_io_ = nullptr;
     esp_lcd_panel_handle_t panel_ = nullptr;
@@ -41,8 +28,7 @@ protected:
     lv_obj_t* emoji_box_ = nullptr;
     esp_timer_handle_t preview_timer_ = nullptr;
 
-    ThemeColors current_theme_;
-
+    void InitializeLcdThemes();
     void SetupUI();
     virtual bool Lock(int timeout_ms = 0) override;
     virtual void Unlock() override;
@@ -60,7 +46,7 @@ public:
 #endif  
 
     // Add theme switching function
-    virtual void SetTheme(const std::string& theme_name) override;
+    virtual void SetTheme(Theme* theme) override;
 };
 
 // SPI LCD显示器