hf.iso14a.raw() returned the entire receive buffer the firmware replies
with (sizeof(buf)), so a tag that didn't answer came back as a run of
zeros (~40 bytes) rather than empty. The firmware puts the real received
length in oldarg[0]; trim resp.data to it. No response -> empty (raw=b"",
data=None); adds a `received` count. 2 regression tests.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
14a.sim sent a MIX frame but the handler is NG casting a packed {tagtype,u16 flags,uid[10],exitAfter,rats[20],ulauth...} struct -> whole struct garbled, flags never arrived. Rewrite to send_ng with the exact struct and expose tagtype (2=Ultralight,7=NTAG) so Ultralight/NTAG sim works. 14a.sniff sent MIX (args stripped -> empty asBytes); send NG with the 1-byte param. Pre-existing, independent of rebase.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Phase 1 of package refactor. Moves all source modules into pm3py/core/
with file renames (hf_14a→hf_iso14a, hf_15→hf_iso15, hf_mf→hf_mfc)
and client attribute normalization (hf.a14→hf.iso14a, hf.mf→hf.mfc).
pm3py/__init__.py re-exports from core for backward compat.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
