Y1: Cmd.HF_ISO14443A_SIM_TRACE (0x0339).
Y2: generalize SimSession._trace_reader dispatch to a {cmd: protocol} map so
14a (proto 1) and 15693 (proto 0) share one reader; the ADC field-strength
branch is now guarded to 15693.
Y3: rewrite start_14a as a synchronous trace path mirroring start_15693 (raw
pyserial + the _trace_reader thread). Sends the correct HF_ISO14443A_SIMULATE
NG payload (same layout as hf.iso14a.sim()), sets FLAG_SIM_TRACE when
streaming, and takes trace/on_frame/quiet/tagtype/exit_after kwargs. Loading
tag memory into emulator RAM stays a separate (hardware) step; the trace
streams every reader<->tag frame regardless. The WTX _relay_loop is retained
for the future 14a-4 path.
T1: mocked-transport unit tests for the 14a trace path (tests/test_sim_trace_14a.py).
Requires the bumped firmware submodule. 996 tests pass.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
