fix(windows): preserve Unicode paths in terminal launch scripts

Author: yyt1216

MCPForUnity/Editor/Services/Server/TerminalLauncher.cs

@@ -109,11 +109,14 @@ public System.Diagnostics.ProcessStartInfo CreateTerminalProcessStartInfo(string
             string scriptsDir = Path.Combine(GetProjectRootPath(), "Library", "MCPForUnity", "TerminalScripts");
             Directory.CreateDirectory(scriptsDir);
             string scriptPath = Path.Combine(scriptsDir, "mcp-terminal.cmd");
+            // Match cmd's code page to the script encoding before it reads non-ASCII paths.
             File.WriteAllText(
                 scriptPath,
                 "@echo off\r\n" +
+                "chcp 65001 >nul\r\n" +
                 "cls\r\n" +
-                command + "\r\n");
+                command + "\r\n",
+                new System.Text.UTF8Encoding(false));
             return new System.Diagnostics.ProcessStartInfo
             {
                 FileName = "cmd.exe",

TestProjects/UnityMCPTests/Assets/Tests/EditMode/Services/Server/TerminalLauncherTests.cs

@@ -154,6 +154,64 @@ public void CreateTerminalProcessStartInfo_SpecialCharacters_HandlesGracefully()
             Assert.IsNotNull(startInfo);
         }
 
+#if UNITY_EDITOR_WIN
+        [TestCase(437)]
+        [TestCase(936)]
+        public void CreateTerminalProcessStartInfo_UnicodePaths_SurviveLegacyCodePage(int codePage)
+        {
+            string testDir = System.IO.Path.Combine(System.IO.Path.GetTempPath(),
+                "mcp-terminal-" + Guid.NewGuid().ToString("N"), "南京项目 空格");
+            System.IO.Directory.CreateDirectory(testDir);
+            string pidPath = System.IO.Path.Combine(testDir, "mcp_http_8090.pid");
+            string generatedScript = System.IO.Path.Combine(_launcher.GetProjectRootPath(),
+                "Library", "MCPForUnity", "TerminalScripts", "mcp-terminal.cmd");
+            byte[] originalScript = System.IO.File.Exists(generatedScript)
+                ? System.IO.File.ReadAllBytes(generatedScript) : null;
+
+            try
+            {
+                _launcher.CreateTerminalProcessStartInfo($"> \"{pidPath}\" echo 123");
+                byte[] scriptBytes = System.IO.File.ReadAllBytes(generatedScript);
+                Assert.IsFalse(scriptBytes.Length >= 3 && scriptBytes[0] == 0xef
+                    && scriptBytes[1] == 0xbb && scriptBytes[2] == 0xbf,
+                    "cmd scripts must not contain a UTF-8 BOM");
+
+                // Execute the generated bytes in a Unicode directory without opening a terminal.
+                string scriptPath = System.IO.Path.Combine(testDir, "mcp-terminal.cmd");
+                System.IO.File.WriteAllBytes(scriptPath, scriptBytes);
+                var startInfo = new System.Diagnostics.ProcessStartInfo
+                {
+                    FileName = "cmd.exe",
+                    Arguments = $"/d /c chcp {codePage} >nul & call \"{scriptPath}\"",
+                    UseShellExecute = false,
+                    CreateNoWindow = true,
+                    RedirectStandardOutput = true,
+                    RedirectStandardError = true
+                };
+                using (var process = System.Diagnostics.Process.Start(startInfo))
+                {
+                    if (!process.WaitForExit(10000))
+                    {
+                        process.Kill();
+                        Assert.Fail("Generated cmd script did not finish within 10 seconds");
+                    }
+                    Assert.AreEqual(0, process.ExitCode, process.StandardError.ReadToEnd());
+                }
+
+                Assert.IsTrue(System.IO.File.Exists(pidPath), "The Unicode pidfile path must be preserved");
+                Assert.AreEqual("123", System.IO.File.ReadAllText(pidPath).Trim());
+            }
+            finally
+            {
+                if (originalScript != null)
+                    System.IO.File.WriteAllBytes(generatedScript, originalScript);
+                else if (System.IO.File.Exists(generatedScript))
+                    System.IO.File.Delete(generatedScript);
+                System.IO.Directory.Delete(System.IO.Path.GetDirectoryName(testDir), true);
+            }
+        }
+#endif
+
         #endregion
 
         #region CreateHeadlessProcessStartInfo Tests