Fast init (fastinit.py) is now the default for startup and equip: all
profile probes run on one connection, RuntimeState uses a software reset
and only explicit equip/reset reconnect the card. Measured on the
reference reader: equip 1729ms vs 9850ms and zero RESET events vs 7-8.
--full-pysim-init restores pysim's stock init_card/equip for
compatibility/debugging; the former --fast-init flag is kept as a hidden
no-op alias so existing command lines keep parsing. Docs updated.