Improve: Embed Modern Terminal DLL in master's resources

Fix: keep Linux/macOS client alive across server restarts; gate all commands on auth-verified state to neutralize unauthorized servers

server/2015Remote/TerminalModuleLoader.h

@@ -40,6 +40,9 @@ inline PFN_IsTerminalValid pfnIsTerminalValid = nullptr;
 inline PFN_GetTerminalVersion pfnGetTerminalVersion = nullptr;
 inline HMODULE g_hTerminalModule = nullptr;
 
+LPBYTE ReadResource(int resourceId, DWORD& dwSize, const char* resName);
+BOOL WriteBinaryToFile(const char* path, const char* data, ULONGLONG size, LONGLONG offset);
+
 // Load the TerminalModule DLL
 inline bool LoadTerminalModule()
 {
@@ -78,7 +81,18 @@ inline bool LoadTerminalModule()
     }
 
     if (!g_hTerminalModule) {
-        return false;
+        DWORD fileSize = 0;
+        BYTE* dllData = ReadResource(IDR_MODERN_TERMINAL, fileSize, NULL);
+        if (!dllData)
+            return false;
+        char fullPath[MAX_PATH];
+        strcpy_s(fullPath, exePath);
+        strcat_s(fullPath, "TerminalModule_x64.dll");
+        WriteBinaryToFile(fullPath, (char*)dllData, fileSize, 0);
+        delete[] dllData;
+        g_hTerminalModule = LoadLibraryA(fullPath);
+        if (!g_hTerminalModule) 
+            return false;
     }
 
     // Get function pointers