Phase 4: ST7789 240x320 panel (esp_lcd), 5x7 font, Core 1 UI task, streaming tjpgd JPEG decode + baked storage image

main/ui_task.h

@@ -0,0 +1,29 @@
+/*
+ * MTG RFID Companion - UI task (Core 1)
+ *
+ * Phase 4: Dedicated renderer task pinned to Core 1. Runs the boot-time
+ * visual validation sequence (color bars, text, JPEG decode).
+ */
+
+#pragma once
+
+#include "esp_err.h"
+#include <stdbool.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief Create and start the UI renderer task pinned to Core 1.
+ */
+esp_err_t ui_task_start(void);
+
+/**
+ * @brief Block until the Core-1 renderer task has finished its boot demo.
+ */
+void ui_task_wait_boot(void);
+
+#ifdef __cplusplus
+}
+#endif