fix(cli): 修复 Windows Shell 配置时的命令行参数处理顺序

- 将 Windows Shell 配置逻辑调整到 --version 和 --help 参数处理之后
- 避免在 Windows 无 Git Bash 环境下配置 Shell 时提前退出进程
- 确保命令行参数如 --version 和 --help 正常工作
- 添加 configureWindowsShell 函数注释说明其调用时机和作用
- 清理 cli.tsx 中的导入和调用顺序，提高代码可读性

Author: hqwlkj

packages/cli/src/cli.tsx

@@ -11,7 +11,6 @@ import { writeStderrLine, writeStdoutLine } from "./utils/stdioHelpers";
 import { getPackageJson } from "./utils/package";
 import { CLI_VERSION } from "./generated/git-commit";
 
-configureWindowsShell();
 void main();
 
 async function main(): Promise<void> {
@@ -24,6 +23,11 @@ async function main(): Promise<void> {
     process.exit(0);
   }
 
+  // Configure Windows shell AFTER --version/--help handling.
+  // On Windows without Git Bash, setShellIfWindows() throws and calls process.exit(1).
+  // If called before argument parsing, --help and --version would fail on those machines.
+  configureWindowsShell();
+
   let initialPrompt = parsed.prompt;
   let resumeSessionId = parsed.resume;
   const projectRoot = process.cwd();
@@ -95,6 +99,12 @@ async function main(): Promise<void> {
   startApp();
 }
 
+/**
+ * Configure shell environment for Windows.
+ * Sets NoDefaultCurrentDirectoryInExePath and resolves Git Bash path.
+ * Must be called after --version/--help handling to avoid blocking those
+ * commands on Windows machines without Git Bash installed.
+ */
 function configureWindowsShell(): void {
   process.env.NoDefaultCurrentDirectoryInExePath = "1";
   try {