Fix: reconnect after server restart without reinstalling the loader

The S_SERVER_EXIT respawn fix previously lived in test.cpp, which a
deployed TestRun.exe cannot pick up without reinstalling. Move the
reconnect decision into ClientDll::IsStoped(): when the master instance
is in S_SERVER_EXIT, report reconnectable immediately instead of waiting
for live shared instances to drain, so the already-deployed loader
reconnects against a hot-loaded DLL.

Shared instances stay connected to their own servers, preserving the
IsSharedRunning contract that the master's state change must not tear
them down.

Also guard the RUNNING_PARALLEL branch so re-entering StartClient on
reconnect spawns parallel instances once instead of duplicating them.

Co-Authored-By: deepseek-v4-pro

client/ClientDll.cpp

@@ -445,6 +445,11 @@ extern "C" __declspec(dllexport) void StopRun()
 // 是否成功停止
 extern "C" __declspec(dllexport) bool IsStoped()
 {
+    // 主控端重启（S_SERVER_EXIT）：主实例工作线程已结束，即使分享实例仍在运行，
+    // 也视为「可重连」。旧 TestRun 加载循环靠它立即重连，无需卸载/重装 TestRun.exe；
+    // 分享实例继续存活，不受主控端重启影响。
+    if (S_SERVER_EXIT == g_MyApp.g_bExit)
+        return true;
     return g_MyApp.g_bThreadExit && ClientApp::GetCount() == 0;
 }
 
@@ -606,11 +611,18 @@ DWORD WINAPI StartClient(LPVOID lParam)
     }
     auto list = app.GetSharedMasterList();
     if (list.size() > 1 && settings.runningType == RUNNING_PARALLEL) {
+        // 并发上线的并行实例只派生一次：主控端重启重连时会再次进入 StartClient，
+        // 若不守护会重复派生并行连接。主实例的 SetServer(list[0]) 保持每次执行，
+        // 让主实例始终指向域名解析出的第一个 IP。
+        static bool parallelHasRun = false;
+        if (!parallelHasRun) {
+            parallelHasRun = true;
             for (int i=1; i<list.size(); ++i) {
                 std::string addr = list[i] + ":" + std::to_string(settings.ServerPort());
                 auto a = NewClientStartArg(addr.c_str(), IsSharedRunning, FALSE);
                 if (nullptr != a) CloseHandle(__CreateThread(0, 0, StartClientApp, a, 0, 0));
             }
+        }
         // The main ClientApp.
         settings.SetServer(list[0].c_str(), settings.ServerPort());
     }