- identify.py: probe HF (14a -> 15693) then LF; set session field /
protocol / transponder. The 14a scan uses NO_DISCONNECT so the tag
stays selected (the persistent connection). SAK -> coarse family name
for the breadcrumb.
- session: add `protocol` (drives raw-exchange routing)
- app: connect via Proxmark3.sync() (scan/raw become plain calls); wire
identify / transponder / close control commands; protocol-aware
_raw_exchange; breadcrumb fills in field + transponder after identify
8 new tests (identify 14a/15693/none, clear, control commands). Device
probes are mocked; live identify is the user's hardware test.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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