2V1-a: port the EterLib network layer and the Crypto++ packet cipher

NetStream/NetAddress/NetDevice/NetPacketHeaderMap and EterBase/cipher.cpp
are mechanical copies. The winsock shim maps Winsock onto BSD sockets and
keeps the Winsock semantics CNetworkStream relies on: select ignores nfds,
a socket whose connect failed is not writable (40250 times out instead),
EINPROGRESS reads as WSAEWOULDBLOCK, and SIGPIPE is ignored.

port.net covers loopback connect, send/recv, peer close, the refused
connect timeout and the client/server key agreement.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

audit/history.jsonl

@@ -507,3 +507,4 @@
 {"time": "2026-09-23T03:27:45Z", "event": "port_round", "unit": "PORT-PLAN 2V0-f: Godot window input and Canvas UI command adapter (partial)", "ported": [], "adapted": ["40250 CWindowManager mouse/key/focus/update bridge into Godot", "CGraphicScreen Bar/Line viewport clip and CGraphicTextInstance text render commands", "CGraphicImage and CGraphicImageInstance image command generation; CPythonResource registration; TGA/DDS/PNG dimensions", "Godot Canvas Control renders native commands and decodes TGA images from 40250 pack", "CGraphicSubImage .sub registration, referenced image dimensions and crop bounds", "CGraphicExpandedImageInstance allocation, type identity and lifetime for script bindings"], "divergent": ["CPythonApplication::Create and Loop are still platform stubs: real system.py cannot show Logo/Popup", "Text metrics, fonts, vertical clipping and non-TGA packed image variants are not verified at parity", "ExpandedImage Canvas rendering still omits original rotation, scale, rendering rectangle and blend mode", "Exploratory monkeypatch past app.Create reaches logo setup but stopping that second RunApp crashes during Python finalization; lifecycle ownership remains unresolved"], "needs_live": [], "tests": ["cmake --build build --target mtgodot -j6: pass", "godot --headless --path project --script python_host_test.gd: pass input/focus/update, bar, clip, text, packed TGA texture, .sub and ExpandedImage create/delete", "ctest --test-dir build --output-on-failure -j6: 29/29 pass, one skipped", "git diff --check: pass"], "not_done": "2V0-f application lifecycle adapter and real visible interactive Logo/Popup; normal app route remains legacy and 2V0 acceptance gate is open", "status_note": "No audit/port-map entry changed. The skill mentions scripts/port_map.py, but that file is absent from this checkout; no port-map check was run."}
 {"time": "2026-09-23T04:35:58Z", "event": "port_round", "unit": "PORT-PLAN 2V0-f: real system.py app loop in Godot (complete)", "ported": ["CGraphicExpandedImageInstance::OnRender and SetRenderingRect (40250 verbatim)", "CGraphicImageInstance::OnRender (40250 verbatim)", "CGraphicBase::GetColor / CPythonGraphic::GenerateColor"], "adapted": ["script fiber runs system.py app.Loop; UIUpdate = one CPythonApplication::Process", "image render commands carry base texture name + quad + UV (D3D -0.5 offset compensated)", "PythonBoot Stop clears the launcher before window manager teardown like 40250 Main", "MT_TEST_MODE=python_ui visible mode"], "tests": ["port.app_loop", "python_host_test.gd"], "todo": ["fnt/CGraphicText font pipeline and text alignment", "ExpandedImage blend modes"]}
 {"time": "2026-09-23T05:15:20Z", "event": "port_round", "unit": "PORT-PLAN 2V0-g: .fnt font pipeline (CGraphicText/CGraphicFontTexture/CGraphicDib/CGraphicTextInstance)", "ported": ["EterLib/GrpText.cpp, GrpFontTexture.cpp, GrpDIB.cpp (40250 verbatim)", "EterLib/GrpTextInstance.cpp (verbatim except D3D draw -> UI render commands)", "EterLib/TextTag, EterLocale/StringCodec, Arabic, StringCodec_Vietnamese (port_copy)", "EterLib/Util.cpp code page / font face table, SetDefaultCodePage", "UserInterface/GameType.cpp DefaultFont_* block", "CGraphicImageTexture Create/Lock/Unlock memory texture path", "GetMaxTextureWidth/Height"], "adapted": ["GDI subset (CreateFontIndirect, CreateDIBSection, TextOutW, GetTextExtentPoint32W, GetCharABCWidthsFloatW) emulated over vendored FreeType 2.13.3 with GDI cell-height/win-metric/gasp rules", "MultiByteToWideChar/WideCharToMultiByte: hand UTF-8/1252, iconv for other code pages", "glyph pages reach Godot as mem:<id>@<revision> memory textures; Canvas caches by id", "PythonBoot::Start calls SetDefaultCodePage(LocaleService_GetCodePage()) like 40250 Main", "CPythonResource registers fnt -> CGraphicText"], "divergent": ["Android /system/fonts has no Tahoma/Gulim: substitute faces change metrics until fonts are bundled", "no per-pixel comparison against Windows GDI output yet"], "needs_live": [], "tests": ["port.text: pass (Tahoma 12 height 12, width, PixelPositionToCharacterPosition, centre align, CP949 round trip)", "port.app_loop: pass (popup glyph quads, inked glyph page)", "ctest 31/31 pass", "godot --headless --path project --script python_host_test.gd: pass", "login screen screenshot: server list, popup and button captions rendered"], "todo": ["ExpandedImage blend modes", "Android font bundling", "2V1 login/select"]}
+{"time": "2026-09-23T05:25:43Z", "event": "port_round", "unit": "PORT-PLAN 2V1-a: EterLib network layer + EterBase cipher", "ported": ["EterLib/NetStream.cpp, NetAddress.cpp, NetDevice.cpp, NetPacketHeaderMap.cpp (port_copy verbatim)", "EterBase/cipher.cpp (port_copy verbatim, Crypto++ DH2 key agreement + CTR block ciphers)"], "adapted": ["shim/win32/winsock.h: Winsock names over BSD sockets; select ignores nfds and drops writable sockets without a peer (Winsock reports a failed connect only in exceptfds); EINPROGRESS -> WSAEWOULDBLOCK; ioctlsocket FIONBIO; WSAStartup ignores SIGPIPE"], "divergent": [], "needs_live": ["cipher agreement against the 40250 game server (2V1-e)"], "tests": ["port.net: pass (loopback connect, send/recv, peer close, refused-connect timeout, client/server cipher agreement)"], "todo": ["2V1-b PythonNetworkStream phases", "2V1-c net module", "2V1-d FakeServer", "2V1-e live smoke"]}