Merge branch 'refactor/core-package' into master

Merges the package refactor (core/ sub-package, normalized naming,
scaffolded sub-packages) while preserving all in-progress sniff
infrastructure. Git rename detection carried WIP changes to new paths.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

docs/plans/2026-03-18-refactor-progress.md

@@ -0,0 +1,74 @@
+# pm3py Refactor Progress
+
+**Design:** [2026-03-18-refactor-design.md](2026-03-18-refactor-design.md)
+**Branch:** `refactor/core-package`
+**Started:** 2026-03-18
+
+## Phase 1 — Create `core/`, normalize names, fix imports
+
+**Status: Complete**
+
+### What was done
+
+- Created `pm3py/core/` sub-package
+- Moved all source modules into `core/`:
+  - `protocol.py`, `transport.py`, `client.py`, `hw.py`, `hf.py`, `lf.py` — moved as-is
+  - `hf_14a.py` → `hf_iso14a.py` (renamed)
+  - `hf_15.py` → `hf_iso15.py` (renamed)
+  - `hf_mf.py` → `hf_mfc.py` (renamed)
+- Normalized client attributes:
+  - `hf.a14` → `hf.iso14a`
+  - `hf.mf` → `hf.mfc`
+  - `hf.iso15` — unchanged
+- Created `core/__init__.py` re-exporting: `Proxmark3`, `FirmwareInfo`, `PM3Transport`, `PM3Error`, `PM3Response`, `PM3Status`, `Cmd`
+- Updated `pm3py/__init__.py` to import from `.core.*`
+- Updated all 10 test files (imports + attribute references)
+- **30/30 tests passing**
+
+### Backward compatibility
+
+- `from pm3py import Proxmark3` still works (re-exported)
+- **Breaking:** `hf.a14` → `hf.iso14a`, `hf.mf` → `hf.mfc`
+- **Breaking:** Direct imports like `from pm3py.hf_14a import ...` → `from pm3py.core.hf_iso14a import ...`
+
+## Phase 2 — Extract `sniff/`
+
+**Status: Scaffolded — extraction deferred**
+
+`hf_iso15.py` is 94 lines of clean reader commands + thin `sniff()` firmware call. The trace parsing, 15693 decoders, NDEF annotation, and ANSI formatting described in the design doc haven't been written yet. Nothing to extract.
+
+Created `pm3py/sniff/__init__.py` placeholder. Will extract into sub-modules when sniff infrastructure is implemented.
+
+## Phase 3 — Scaffold `transponders/`
+
+**Status: Complete (scaffolded)**
+
+Created full directory tree per design:
+- `transponders/hf/iso14443a3/nxp/` — MIFARE Classic, Ultralight, NTAG
+- `transponders/hf/iso14443a4/nxp/` — DESFire, NTAG 5
+- `transponders/hf/iso15693/nxp/` — ICODE SLIX2
+- `transponders/hf/iso15693/st/` — ST25TV
+- `transponders/lf/atmel/` — T55xx
+- `transponders/lf/em/` — EM4100, EM4x05
+
+All directories have `__init__.py`. Model migration from sim worktree is a separate effort — the sim framework has ~7.8k LOC with deep inheritance chains (`Transponder` → `Tag15693` → `NxpIcodeTag` → `IcodeSlix2Tag`, etc.) and auth mixins (`NxpPasswordAuth`, `NxpAesAuth`). Base class extraction needs to happen alongside model migration.
+
+## Phase 4 — Scaffold `reader/` and `sim/`
+
+**Status: Complete (scaffolded)**
+
+Created directory trees per design:
+- `reader/hf/nxp/` — NXP reader ICs (CLRC663, PN5xx)
+- `reader/hf/st/` — ST reader ICs
+- `reader/lf/`
+- `reader/modes/` — inventory, programming, access control workflows
+- `sim/` — sim session, table compiler, relay (migrate from worktree)
+
+All directories have `__init__.py`. Sim migration (~41 files, 7.8k LOC) is a separate effort.
+
+## Next Steps
+
+- Sniff infrastructure: implement trace parsing, 15693 decoders, NDEF annotation, ANSI formatting in `sniff/`
+- Transponder migration: extract base classes from sim worktree, populate `transponders/` modules
+- Sim migration: move sim session, table compiler, relay into `sim/`
+- Reader modes: implement inventory, programming, access workflows in `reader/modes/`

pm3py/__init__.py

@@ -1,6 +1,6 @@
 """pm3py - Python wire protocol library for Proxmark3."""
-from .client import Proxmark3
-from .transport import PM3Error, PM3Response
-from .protocol import PM3Status, Cmd
+from .core.client import Proxmark3
+from .core.transport import PM3Error, PM3Response
+from .core.protocol import PM3Status, Cmd
 
 __all__ = ["Proxmark3", "PM3Error", "PM3Response", "PM3Status", "Cmd"]

pm3py/core/__init__.py

@@ -0,0 +1,10 @@
+"""pm3py.core — Wire protocol, transport, and device commands."""
+from .client import Proxmark3, FirmwareInfo
+from .transport import PM3Transport, PM3Error, PM3Response
+from .protocol import PM3Status, Cmd
+
+__all__ = [
+    "Proxmark3", "FirmwareInfo",
+    "PM3Transport", "PM3Error", "PM3Response",
+    "PM3Status", "Cmd",
+]

pm3py/core/client.py

@@ -10,9 +10,9 @@ from .transport import PM3Transport, PM3Response, PM3Error, ProgressCallback
 from .hw import HWCommands
 from .lf import LFCommands
 from .hf import HFCommands
-from .hf_14a import HF14ACommands
-from .hf_15 import HF15Commands
-from .hf_mf import HFMFCommands
+from .hf_iso14a import HF14ACommands
+from .hf_iso15 import HF15Commands
+from .hf_mfc import HFMFCommands
 
 log = logging.getLogger(__name__)
 
@@ -68,9 +68,9 @@ class Proxmark3:
         self.hw = HWCommands(self._transport)
         self.lf = LFCommands(self._transport)
         self.hf = HFCommands(self._transport)
-        self.hf.a14 = HF14ACommands(self._transport)
+        self.hf.iso14a = HF14ACommands(self._transport)
         self.hf.iso15 = HF15Commands(self._transport)
-        self.hf.mf = HFMFCommands(self._transport)
+        self.hf.mfc = HFMFCommands(self._transport)
         self.firmware = FirmwareInfo()
 
     async def connect(self) -> None:
@@ -157,7 +157,7 @@ class _SyncProxy:
         if isinstance(attr, (HWCommands, LFCommands, HFCommands,
                              HF14ACommands, HF15Commands, HFMFCommands)):
             return _SyncProxy(attr, self._loop)
-        # Sub-modules attached dynamically (e.g. hf.a14, hf.mf)
+        # Sub-modules attached dynamically (e.g. hf.iso14a, hf.mfc)
         if hasattr(attr, '_t'):
             return _SyncProxy(attr, self._loop)
         if callable(attr) and inspect.iscoroutinefunction(attr):

pm3py/core/hf.py

@@ -11,9 +11,9 @@ class HFCommands:
     def __init__(self, transport: PM3Transport):
         self._t = transport
         # Sub-modules attached by client.py
-        self.a14 = None  # type: ignore
+        self.iso14a = None  # type: ignore
         self.iso15 = None  # type: ignore
-        self.mf = None  # type: ignore
+        self.mfc = None  # type: ignore
 
     async def tune(self, on_progress: ProgressCallback = None) -> dict:
         """Measure HF antenna voltage."""
@@ -38,9 +38,9 @@ class HFCommands:
             if asyncio.iscoroutine(ret):
                 await ret
 
-        if self.a14:
+        if self.iso14a:
             try:
-                card = await self.a14.scan()
+                card = await self.iso14a.scan()
                 if card.get("uid"):
                     results["iso14443a"] = card
             except PM3Error:

pm3py/reader/__init__.py

@@ -0,0 +1 @@
+"""pm3py.reader — Higher-level reader modes composing core commands."""

pm3py/reader/hf/__init__.py

@@ -0,0 +1 @@
+"""HF reader modes organized by reader IC manufacturer."""

pm3py/reader/hf/nxp/__init__.py

@@ -0,0 +1 @@
+"""NXP reader ICs (CLRC663, PN5xx)."""

pm3py/reader/hf/st/__init__.py

@@ -0,0 +1 @@
+"""ST Microelectronics reader ICs."""

pm3py/reader/lf/__init__.py

@@ -0,0 +1 @@
+"""LF reader modes."""

pm3py/reader/modes/__init__.py

@@ -0,0 +1 @@
+"""Reader workflow modes — inventory, programming, access control."""

pm3py/sim/__init__.py

@@ -0,0 +1 @@
+"""pm3py.sim — Card simulation sessions, table compiler, relay."""

pm3py/sniff/__init__.py

@@ -0,0 +1 @@
+"""pm3py.sniff — Sniff sessions, trace parsing, protocol decoders, formatting."""

pm3py/transponders/__init__.py

@@ -0,0 +1 @@
+"""pm3py.transponders — Tag/transponder models independent of hardware."""

pm3py/transponders/hf/__init__.py

@@ -0,0 +1 @@
+"""HF transponder models organized by ISO standard, then manufacturer."""

pm3py/transponders/hf/iso14443a3/__init__.py

@@ -0,0 +1 @@
+"""ISO 14443-A Layer 3 transponders (MIFARE Classic, Ultralight, NTAG)."""

pm3py/transponders/hf/iso14443a3/nxp/__init__.py

@@ -0,0 +1 @@
+"""NXP ISO 14443-A Layer 3 transponders."""

pm3py/transponders/hf/iso14443a4/__init__.py

@@ -0,0 +1 @@
+"""ISO 14443-A Layer 4 (ISO-DEP) transponders (DESFire, NTAG 5 via -4)."""

pm3py/transponders/hf/iso14443a4/nxp/__init__.py

@@ -0,0 +1 @@
+"""NXP ISO 14443-A Layer 4 transponders."""

pm3py/transponders/hf/iso15693/__init__.py

@@ -0,0 +1 @@
+"""ISO 15693 transponder models and NFC Forum Type 5 NDEF."""

pm3py/transponders/hf/iso15693/nxp/__init__.py

@@ -0,0 +1 @@
+"""NXP ICODE / NTAG 5 ISO 15693 transponders."""

pm3py/transponders/hf/iso15693/st/__init__.py

@@ -0,0 +1 @@
+"""ST Microelectronics ISO 15693 transponders."""

pm3py/transponders/lf/__init__.py

@@ -0,0 +1 @@
+"""LF transponder models organized by manufacturer."""

pm3py/transponders/lf/atmel/__init__.py

@@ -0,0 +1 @@
+"""Atmel/Microchip LF transponders (T55xx)."""

pm3py/transponders/lf/em/__init__.py

@@ -0,0 +1 @@
+"""EM Microelectronic LF transponders (EM4100, EM4x05)."""

tests/test_crc.py

@@ -1,4 +1,4 @@
-from pm3py.protocol import crc16_a
+from pm3py.core.protocol import crc16_a
 
 def test_crc16_a_empty():
     assert crc16_a(b"") == 0x6363  # init 0xC6C6 reflected = 0x6363

tests/test_hf.py

@@ -1,8 +1,8 @@
 import asyncio
 from unittest.mock import AsyncMock
-from pm3py.protocol import Cmd
-from pm3py.transport import PM3Response
-from pm3py.hf import HFCommands
+from pm3py.core.protocol import Cmd
+from pm3py.core.transport import PM3Response
+from pm3py.core.hf import HFCommands
 
 def test_hf_tune():
     t = AsyncMock()

tests/test_hf_14a.py

@@ -1,9 +1,9 @@
 import struct
 import asyncio
 from unittest.mock import AsyncMock
-from pm3py.protocol import Cmd
-from pm3py.transport import PM3Response
-from pm3py.hf_14a import HF14ACommands
+from pm3py.core.protocol import Cmd
+from pm3py.core.transport import PM3Response
+from pm3py.core.hf_iso14a import HF14ACommands
 
 def test_14a_scan():
     t = AsyncMock()

tests/test_hf_15.py

@@ -1,15 +1,14 @@
 import asyncio
 import struct
 from unittest.mock import AsyncMock
-from pm3py.protocol import Cmd
-from pm3py.transport import PM3Response
-from pm3py.hf_15 import (
+from pm3py.core.protocol import Cmd
+from pm3py.core.transport import PM3Response
+from pm3py.core.hf_iso15 import (
     HF15Commands, parse_tracelog, TRACELOG_HDR_SIZE,
     decode_15693_request, decode_15693_response, decode_15693,
     format_sniff_line, decode_ndef_annotation,
 )
 
-
 def test_15_scan():
     t = AsyncMock()
     iso15 = HF15Commands(t)

tests/test_hf_mf.py

@@ -1,9 +1,9 @@
 import struct
 import asyncio
 from unittest.mock import AsyncMock
-from pm3py.protocol import Cmd
-from pm3py.transport import PM3Response
-from pm3py.hf_mf import HFMFCommands
+from pm3py.core.protocol import Cmd
+from pm3py.core.transport import PM3Response
+from pm3py.core.hf_mfc import HFMFCommands
 
 def test_mf_rdbl():
     t = AsyncMock()

tests/test_hw.py

@@ -1,9 +1,9 @@
 import struct
 import asyncio
 from unittest.mock import AsyncMock
-from pm3py.protocol import Cmd
-from pm3py.transport import PM3Response
-from pm3py.hw import HWCommands
+from pm3py.core.protocol import Cmd
+from pm3py.core.transport import PM3Response
+from pm3py.core.hw import HWCommands
 
 def make_ng_response(cmd: int, status: int, payload: bytes) -> PM3Response:
     return PM3Response(cmd=cmd, status=status, reason=0, ng=True, data=payload)
@@ -91,7 +91,7 @@ def test_led_brightness():
 
 def test_led_pwm_non_capable_raises():
     """PWM on a non-PWM LED should raise PM3Error."""
-    from pm3py.transport import PM3Error
+    from pm3py.core.transport import PM3Error
     import pytest
     transport = make_mock_transport()
     hw = HWCommands(transport)

tests/test_integration.py

@@ -3,7 +3,7 @@ import struct
 import asyncio
 from unittest.mock import AsyncMock, MagicMock
 from pm3py import Proxmark3, Cmd
-from pm3py.client import FirmwareInfo
+from pm3py.core.client import FirmwareInfo
 
 
 def test_full_api_surface():
@@ -14,9 +14,9 @@ def test_full_api_surface():
     assert hasattr(pm3, "lf")
     assert hasattr(pm3, "hf")
     assert hasattr(pm3.lf, "t55")
-    assert hasattr(pm3.hf, "a14")
+    assert hasattr(pm3.hf, "iso14a")
     assert hasattr(pm3.hf, "iso15")
-    assert hasattr(pm3.hf, "mf")
+    assert hasattr(pm3.hf, "mfc")
     assert hasattr(pm3, "send_ng")
     assert hasattr(pm3, "send_mix")
     assert hasattr(pm3, "firmware")
@@ -27,7 +27,7 @@ def test_hw_ping_roundtrip():
     """Test ping returns structured dict."""
     pm3 = Proxmark3("/dev/null")
     mock_transport = AsyncMock()
-    from pm3py.transport import PM3Response
+    from pm3py.core.transport import PM3Response
     ping_data = bytes(range(32))
     mock_transport.send_ng.return_value = PM3Response(
         cmd=Cmd.PING, status=0, reason=0, ng=True, data=ping_data)
@@ -41,21 +41,21 @@ def test_mf_rdbl_returns_hex():
     """Verify MIFARE read returns hex string data."""
     pm3 = Proxmark3("/dev/null")
     mock_transport = AsyncMock()
-    from pm3py.transport import PM3Response
+    from pm3py.core.transport import PM3Response
     block = bytes(range(16))
     mock_transport.send_ng.return_value = PM3Response(
         cmd=Cmd.HF_MIFARE_READBL, status=0, reason=0, ng=True, data=block)
-    pm3.hf.mf._t = mock_transport
+    pm3.hf.mfc._t = mock_transport
     result = asyncio.get_event_loop().run_until_complete(
-        pm3.hf.mf.rdbl(block=4, key="FFFFFFFFFFFF"))
+        pm3.hf.mfc.rdbl(block=4, key="FFFFFFFFFFFF"))
     assert result["data"] == "000102030405060708090a0b0c0d0e0f"
     assert result["raw"] == block
 
 
 def test_sync_proxy():
     """Verify sync proxy wraps async calls."""
-    from pm3py.transport import PM3Response
-    from pm3py.client import _SyncProxy
+    from pm3py.core.transport import PM3Response
+    from pm3py.core.client import _SyncProxy
 
     pm3 = Proxmark3("/dev/null")
     loop = asyncio.new_event_loop()
@@ -83,7 +83,7 @@ def test_firmware_probe_compatible():
     pm3._transport = mock_transport
     pm3.hw._t = mock_transport
 
-    from pm3py.transport import PM3Response
+    from pm3py.core.transport import PM3Response
 
     ping_data = bytes(range(32))
     vstr = b"Proxmark3 RDV4.0 FW v4.18000\x00"
@@ -109,7 +109,7 @@ def test_firmware_probe_ping_fails():
     pm3._transport = mock_transport
     pm3.hw._t = mock_transport
 
-    from pm3py.transport import PM3Response, PM3Error
+    from pm3py.core.transport import PM3Response, PM3Error
 
     vstr = b"Proxmark3 OLD\x00"
     version_payload = struct.pack("<III", 0x270B0A40, 256*1024, len(vstr)) + vstr

tests/test_lf.py

@@ -1,9 +1,9 @@
 import struct
 import asyncio
 from unittest.mock import AsyncMock
-from pm3py.protocol import Cmd
-from pm3py.transport import PM3Response
-from pm3py.lf import LFCommands
+from pm3py.core.protocol import Cmd
+from pm3py.core.transport import PM3Response
+from pm3py.core.lf import LFCommands
 
 def make_response(cmd, status, data):
     return PM3Response(cmd=cmd, status=status, reason=0, ng=True, data=data)

tests/test_transport.py

@@ -1,6 +1,6 @@
 import struct
-from pm3py.transport import encode_ng_frame, decode_response_frame, encode_mix_frame, _crc_to_wire
-from pm3py.protocol import Cmd, CMD_PREAMBLE_MAGIC, CMD_POSTAMBLE_NOCRC, RESP_PREAMBLE_MAGIC, RESP_POSTAMBLE_NOCRC, crc16_a
+from pm3py.core.transport import encode_ng_frame, decode_response_frame, encode_mix_frame, _crc_to_wire
+from pm3py.core.protocol import Cmd, CMD_PREAMBLE_MAGIC, CMD_POSTAMBLE_NOCRC, RESP_PREAMBLE_MAGIC, RESP_POSTAMBLE_NOCRC, crc16_a
 
 def test_encode_ng_frame_ping_no_payload():
     frame = encode_ng_frame(Cmd.PING, b"")