feat: full integration with FreeRTOS tasks and slideshow state machine

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

src/settings.cpp

@@ -46,6 +46,10 @@ void SettingsManager::saveField(const char* key, uint8_t value) {
     writeU8(key, value);
 }
 
+void SettingsManager::saveField(const char* key, uint32_t value) {
+    writeU32(key, value);
+}
+
 void SettingsManager::saveField(const char* key, const char* value) {
     writeString(key, String(value));
 }