docs: update README with ADR-045–048, Observatory, adaptive classifier, AMOLED display

- Update ADR count from 44 to 48
- Add adaptive classifier (ADR-048) to Intelligence features
- Add Observatory visualization (ADR-047) and AMOLED display (ADR-045) to Deployment features
- Update screenshot to v2-screen.png
- Add ADR-045 (AMOLED), ADR-046 (Android TV), ADR-047 (Observatory), DDD deployment model
- Add AMOLED display firmware (display_hal, display_task, display_ui, LVGL config)
- Add Observatory UI (13 Three.js modules, CSS, HTML entry point)
- Add trained adaptive model JSON
- Update .gitignore for managed_components, recordings, .swarm

Co-Authored-By: claude-flow <ruv@ruv.net>

firmware/esp32-csi-node/main/display_task.h

@@ -0,0 +1,29 @@
+/**
+ * @file display_task.h
+ * @brief ADR-045: FreeRTOS display task — LVGL pump on Core 0.
+ */
+
+#ifndef DISPLAY_TASK_H
+#define DISPLAY_TASK_H
+
+#include "esp_err.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * Start the display task on Core 0, priority 1.
+ *
+ * Probes for RM67162 panel and SPIRAM. If either is absent,
+ * logs a warning and returns ESP_OK (graceful skip).
+ *
+ * @return ESP_OK always (display is optional).
+ */
+esp_err_t display_task_start(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* DISPLAY_TASK_H */