Built-in firmware app (needs the full ST BLE stack) with live RSSI-sorted scan list, advertisement decoding (Apple Continuity, Microsoft CDP, Fast Pair, Eddystone), connect/discover/read/write/notify, device-info summary, value history and a timestamped session log. build.sh produces a firmware update package with COPRO_STACK_TYPE=ble_full and the app compiled in.