DmgrEnumDevices builds an internal device table that must be released
with DmgrFreeDvcEnum, otherwise a second enumeration (e.g. opening a
probe by index, which re-runs Detect) fails.
TMS-only shifts go through DjtgPutTmsBits with TDI held to 0. Pure data
shifts use DjtgPutTdiBits with TMS held to 0. Mixed shifts (e.g. last
bit of Shift-IR/DR with TMS=1) fall back to DjtgPutTmsTdiBits — note
that within each pair the encoding is TDI(low) then TMS(high),
LSB-first, despite the function name (verified against the SDK
DjtgDemo sample).
Init also gained a lazy call to Detect: jtag_open_probe can be invoked
without first running jtag_get_probes_list.
Validated on KCU105: jtag_autoinit returns IDCODE 0x13822093
(XCKU040 rev1) through the Digilent SMT2-NC.
DmgrOpen + DjtgEnable + DjtgSetSpeed at 4 MHz (Adept rounds to the
nearest supported, e.g. 3.75 MHz on SMT2-NC). DeInit does the reverse.
An atexit hook also forces Close on process shutdown — leaving an open
HIF when libdjtg's C++ static destructors run triggers "pure virtual
method called".
Loads the Adept .so files lazily and resolves the symbols we need.
Detect() enumerates devices via DmgrEnumDevices/DmgrGetDvc and exposes
each as a Viveris probe slot. If Adept Runtime is missing, the driver
silently reports 0 probes.
