修改代码注释为中文

internal/platform/darwin.go

@@ -18,7 +18,7 @@ func NewDarwinPlatform() *DarwinPlatform {
 }
 
 func (p *DarwinPlatform) OS() string      { return "darwin" }
-func (p *DarwinPlatform) Arch() string    { return "amd64" } // TODO: detect properly
+func (p *DarwinPlatform) Arch() string    { return "amd64" } // TODO: 正确检测架构
 func (p *DarwinPlatform) HomeDir() string { return p.homeDir }
 
 func (p *DarwinPlatform) ConfigDir() string {
@@ -34,13 +34,13 @@ func (p *DarwinPlatform) GetEnvVar(key string) string {
 }
 
 func (p *DarwinPlatform) SetEnvVar(ctx context.Context, key, value string) error {
-	// On macOS, set via launchctl and shell profile
+	// 在 macOS 上通过 launchctl 和 Shell 配置文件设置
 	cmd := exec.CommandContext(ctx, "launchctl", "setenv", key, value)
 	return cmd.Run()
 }
 
 func (p *DarwinPlatform) AddToPath(ctx context.Context, dir string) error {
-	// TODO: Add to shell profile
+	// TODO: 添加到 Shell 配置文件
 	return nil
 }