2V3-a: walk with the keyboard through the ported player chain

PythonPlayer, PythonPlayerInput{,Keyboard,Mouse}, PythonPlayerEventHandler,
PythonPlayerSkill, PythonPlayerModule and GameType are verbatim copies; the
`player` stub module and the pending PythonPlayer/GameType stand-ins are gone.
Unported callees (CPythonSkill, CItemData, CItemManager, CPythonItem, ...) are
pending stubs. 64-bit fixes: emotion icon handles use Py_BuildPointer, and
PyDict_Next takes Py_ssize_t.

The actor did not move because GrannyUpdateModelMatrix passed the model matrix
through. Walk/run motions use constant root-motion extraction
(AccumulationFlags=AccumulationExtracted, LoopTranslation e.g. (0,-300,0) for
the warrior run, same as the .msa Accumulation). libgr2 now reads both fields
from TrackGroups[0], and the runtime moves by LoopTranslation over each
control's local-clock span, blended by control weight. VDA extraction is not
implemented.

port.login_flow presses DIK_UP; the actor walks more than 100 cm, and the fake
server parses CG packets and sees CG_MOVE FUNC_MOVE, then FUNC_WAIT at the new
position. port.login_live against the real server walked 132 cm.

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

docs/PORT-PLAN.md

@@ -429,6 +429,7 @@ extension/third_party/cpython-2.7.18/                  # 静态库（2P 批次
 4. **2V3 — 本地移动**：加入 `PythonPlayer`、`PythonPlayerInput*`、`PythonPlayerEventHandler`、
    `InstanceBaseMovement`、`ActorInstance{Motion,Event,Position,Rotation,CollisionDetection}` 的实际依赖闭包。验收为输入经过新路径
    改变位置/朝向、发送与 40250 相同的移动封包，并在离线边界测试和真服 smoke 中通过。接通时删除对应 legacy 玩法逻辑。
+   2V3-a（2026-09-23）：`PythonPlayer`、`PythonPlayerInput`/`InputKeyboard`/`InputMouse`、`PythonPlayerEventHandler`、`PythonPlayerSkill`、`PythonPlayerModule`、`GameType` 原样移植（port-map 标 PORTED），`GameplayModules.cpp` 的 `player` 桩删除，`initPlayer()` 按 40250 顺序在 `initchrmgr()` 后调用；`pending/UserInterface/{PythonPlayer,GameType}.cpp` 替身删除，其余被调方（`CPythonSkill`、`CItemData`、`CItemManager`、`CPythonItem` 等）进 `pending`。64 位修正：`playerGetEmotionIconImage` 用 `Py_BuildPointer`，`PyDict_Next` 用 `Py_ssize_t`。根运动：Granny 运行时的 `GrannyUpdateModelMatrix` 原为直通，按 TrackGroups[0] 的 `AccumulationFlags`（AccumulationExtracted）/`LoopTranslation`（libgr2 新读出，战士 run = (0,-300,0)，同 .msa `Accumulation`）按控制器本地时钟推进与权重累加位移（Delta × ModelMatrix）；VDA 抽取未实现。`port.login_flow` 按 DIK_UP 经 `game.GameWindow` → `player.SetSingleDIKKeyState` 行走 >100 cm，假服解析 CG 包，收到 `CG_MOVE` FUNC_MOVE 后 FUNC_WAIT 且坐标变化；`port.login_live` 2026-09-23 对 192.168.21.203 走 132 cm 通过。待办：鼠标点地移动/攻击、`CheckAdvancing` 与地图属性替身、legacy 移动逻辑随默认路由切到 `port` 删除。
 
 每个切片都必须同时跑 legacy/port 双路回归；只有 2V3 稳定并把默认路由切到 `port` 后，才能删除总开关和剩余 legacy 宿主。