fix: single boot refresh with QR code, async WiFi scan, skip light sleep in AP mode

Co-authored-by: Cursor <cursoragent@cursor.com>

src/display_manager.h

@@ -2,6 +2,7 @@
 
 #include <Arduino.h>
 #include <M5GFX.h>
+#include <qrcode.h>
 #include "config.h"
 #include "image_pipeline.h"
 #include "immich_client.h"
@@ -12,6 +13,7 @@ class PowerManager;
 class DisplayManager {
 public:
     void begin(PowerManager& power);
+    void showSetupScreen();
     void showImage(const ProcessedImage& img);
     void showMessage(const char* title, const char* body);
     void showMetadata(const AssetInfo& info, uint8_t metaFlags, MetaPosition pos);