`_ram_send_gp_apdu` (the shared step sender of /api/ram-install and
/api/ram-install-app) now logs every step's plaintext APDU and packed
packet, like /api/send-ota's unconditional lines:
RAM C-APDU (INSTALL [for load]): 80E602000C07F0414C4641610100000000
RAM SECURED-PACKET (INSTALL [for load]): 00281516212525000000...
No flag - the step name keeps the sequence readable, and --apdu-trace stays
the card-level (ENVELOPE) trace. Tests: the logging pinned with stubbed
packet builders.
498 Python / 650 frontend green; version 3.6.19; sw simple-v292.