Batch 2R: 40250 pack inventory (epk_scan) and delivery decision

Read-only scanner for Client/pack following PackInitialize -> CEterPackManager
-> CEterPack::__BuildIndex/Get2. Keys are read from the reference EterPack.cpp
at run time; none are stored. Pure-Python TEA + LZO1X.

- 136 registered packs, 54,891 entries: NONE/COMPRESS/SECURITY only, no
  PANAMA/HybridCrypt, all entries decode
- first-registered pack wins; 2,282 shadowed entries (2,194 differ)
- metin2_patch_{sd,mineral,mundi} use a second packer layout; 4 SECURITY
  files fail 40250's CRC check and never load in the original
- no case collisions; paths are already lowercase
- PORT-PLAN: read EPK on device via ported EterPack, base install minus
  extra locales, rebuild dict in Index order on any pack change

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

audit/history.jsonl

@@ -487,3 +487,4 @@
 {"time":"2026-09-22T12:00:00Z","event":"dead_code_removal","deleted_system_files":106,"deleted_tests":106,"lines_removed":36221,"manifest_refs_removed":76,"contracts_touched":18,"reason":"project/*_system.gd reachable only from their own test_*_parity.gd; not implementations of 40250 behavior (SKILL.md: unreachable code is not evidence)","tests":["full headless Godot suite: 192 PASS, 7 FAIL and 5 render tests hanging in headless, all identical on the pre-deletion tree"]}
 {"time":"2026-09-22T13:00:00Z","event":"port_map_rebaseline","unit":"UserInterface/PythonPlayerEventHandler.cpp","reset_to_todo":["CPythonPlayerEventHandler::GetSingleton","CPythonPlayerEventHandler::~CPythonPlayerEventHandler","CPythonPlayerEventHandler::OnMoving","CPythonPlayerEventHandler::OnMove","CPythonPlayerEventHandler::OnStop","CPythonPlayerEventHandler::CPythonPlayerEventHandler"],"reason":"new mirror architecture owns the CPythonPlayerEventHandler singleton in native code; prior GDScript counterparts are migration sources, not final mirror implementations","tests":["port_map.py check"]}
 {"time":"2026-09-22T15:00:00Z","event":"port_map_rebaseline","scope":"all units","totals":{"logic":3343,"python":5175,"platform":2091,"all":10609,"done":0,"divergent":1},"previous":{"logic":3285,"python":4890,"platform":2229,"all":10404},"changes":["cpp_functions: strip comments, accept indented qualified definitions inside namespace blocks, long parameter/initializer lists (40-line window), all-caps qualified ctors, skip constructor initializer entries","EterBase split by unit: tea/lzo/cipher/Random/Stl/Timer/Poly are logic, CPostIt/CRC32/Debug/FileBase/FileDir/FileLoader/MappedFile/TempFile/Utils/error stay platform; 8 obsolete platform stub files removed","audit/slices regenerated (layer fields; EterLib/Dimm.h now platform)"],"reason":"PORT-PLAN 2A step 6; inventory cross-checked against the clang-derived platform skeleton: every stub is inventoried except 22 declarations 40250 never defines and namespace/typedef spelling variants","tests":["port_map.py check","script/port_gate.sh (macos/android/ios/windows PASS, linux BLOCKED)"]}
+{"time":"2026-09-22T16:00:00Z","event":"pack_inventory","scope":"Client/pack (batch 2R)","tool":"tools/epk_scan/epk_scan.py","report":"audit/packs/2R-scan.json","totals":{"registered_packs":136,"entries":54891,"unique_paths":52609,"NONE":20727,"COMPRESS":29812,"SECURITY":4352,"PANAMA":0,"HYBRIDCRYPT":0,"decode_failures":0,"overrides":2282,"overrides_different":2194,"case_collisions":0},"findings":["first-registered pack wins (CEterFileDict multimap, VS2022 STL)","short-layout packer in metin2_patch_{sd,mineral,mundi}: 4 SECURITY files rejected by 40250 CRC check","no server-delivered pack keys needed"]}