fix(codex-wrapper): defer startup log until args parsed

调整启动日志输出时机,在参数解析后再打印:

问题:
- 之前在解析参数前打印日志,命令行显示的是原始参数
- 无法准确反映实际执行的 codex 命令

解决:
- 将启动日志移到 buildCodexArgsFn 调用后
- 日志现在显示完整的 codex 命令(包括展开的参数)
- 提升调试体验,准确反映执行上下文

改动位于 codex-wrapper/main.go:487-500

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

codex-wrapper/main.go

@@ -444,12 +444,6 @@ func run() (exitCode int) {
 
 	logInfo("Script started")
 
-	// Print startup information to stderr
-	fmt.Fprintf(os.Stderr, "[codex-wrapper]\n")
-	fmt.Fprintf(os.Stderr, "  Command: %s\n", strings.Join(os.Args, " "))
-	fmt.Fprintf(os.Stderr, "  PID: %d\n", os.Getpid())
-	fmt.Fprintf(os.Stderr, "  Log: %s\n", logger.Path())
-
 	cfg, err := parseArgs()
 	if err != nil {
 		logError(err.Error())
@@ -493,6 +487,18 @@ func run() (exitCode int) {
 
 	useStdin := cfg.ExplicitStdin || shouldUseStdin(taskText, piped)
 
+	targetArg := taskText
+	if useStdin {
+		targetArg = "-"
+	}
+	codexArgs := buildCodexArgsFn(cfg, targetArg)
+
+	// Print startup information to stderr
+	fmt.Fprintf(os.Stderr, "[codex-wrapper]\n")
+	fmt.Fprintf(os.Stderr, "  Command: %s %s\n", codexCommand, strings.Join(codexArgs, " "))
+	fmt.Fprintf(os.Stderr, "  PID: %d\n", os.Getpid())
+	fmt.Fprintf(os.Stderr, "  Log: %s\n", logger.Path())
+
 	if useStdin {
 		var reasons []string
 		if piped {