1f3d999785
Also: btusb btintel firmware loading module + plan doc updates. - btintel.rs (241 lines): Intel BT firmware loading infrastructure. IntelVersion parse from HCI event, bootloader/operational detection, MFG enter/exit commands, firmware fragment splitting (252-byte chunks), SFI/DDC filename tables for Intel BT devices (0037, 0a2b, 0aa7, 0aaa, 0036, 0025, 0026, 0029, 0032, 0033), CSS header length detection (RSA 644B / ECDSA 644B). 4 unit tests. Ported from Linux drivers/bluetooth/btintel.c. - Plan doc: Phase 7.1 marked partial (btintel module done, HCI transport wiring remains). ACPICA assessment updated with _DSW/_PSW wake arming and sleep state discovery.