feat: card-specific ADF AID helper + priority default (v3.6.16)

- the ADF AID field gains a "From card" button: it reads the ADF.USIM FCI
  via /api/select and extracts the DF name (tag 84) with the new
  adfAidFromFci() - the AID is card-specific (the live card's is
  A0000000871002FF49FF0589, 12 bytes; the base A0000000871002 is only a
  prefix, and a shorter AID makes the card reject the access entry with
  6A80).
- the priority field defaults to 255 (0xFF) and is labelled "(0 = RFU)":
  TS 102 226 8.2.1.3.2.6 makes '00' RFU, which can break the toolkit
  registration; the builder defaults an unset priority to 0xFF and the
  chain rows follow.
- stkParamsBuild's formatted payload fields are uppercase now (the rest of
  the tool's hex is; toString(16) emits lowercase).
- tests: adfAidFromFci pinned to the live FCI, the From-card wiring, the
  updated form expectations.

643 frontend / 496 Python green; version 3.6.16; sw simple-v289.

pysim_simple_server/server.py

@@ -31,7 +31,7 @@ from osmocom.tlv import BER_TLV_IE
 from osmocom.utils import rpad
 
 
-VERSION = '3.6.15'
+VERSION = '3.6.16'
 
 MAX_ENVELOPE_SEGMENTS = 5  # max SMS segments for outgoing C-APDU in ENVELOPE