refactor(Style): Add font abstraction and CSS-like styling constants

boards/esp32-32e-4/esp32-32e-4.ino

@@ -4,7 +4,14 @@
 
 #include "DisplayDriverTFT.h"
 #include "board_config.h"
+
+// Include local secrets.h if it exists (board-specific credentials),
+// otherwise KlubhausCore/src/secrets.h provides defaults.
+#ifdef LOCAL_SECRETS
 #include "secrets.h"
+#else
+#include <secrets.h>
+#endif
 
 #include <KlubhausCore.h>