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.

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "pysim-simple-server"
-version = "3.6.15"
+version = "3.6.16"
 description = "HTTP REST server wrapping pysim for the SIMple PWA"
 requires-python = ">=3.8"
 # pysim is a git-only dependency installed explicitly by setup.bat/setup.sh.