feat(kiro): add AWS Builder ID authentication support

- Add --kiro-aws-login flag for AWS Builder ID device code flow
- Add DoKiroAWSLogin function for AWS SSO OIDC authentication
- Complete Kiro integration with AWS, Google OAuth, and social auth
- Add kiro executor, translator, and SDK components
- Update browser support for Kiro authentication flows

sdk/cliproxy/service.go

@@ -379,6 +379,8 @@ func (s *Service) ensureExecutorsForAuth(a *coreauth.Auth) {
 		s.coreManager.RegisterExecutor(executor.NewQwenExecutor(s.cfg))
 	case "iflow":
 		s.coreManager.RegisterExecutor(executor.NewIFlowExecutor(s.cfg))
+	case "kiro":
+		s.coreManager.RegisterExecutor(executor.NewKiroExecutor(s.cfg))
 	default:
 		providerKey := strings.ToLower(strings.TrimSpace(a.Provider))
 		if providerKey == "" {
@@ -721,6 +723,9 @@ func (s *Service) registerModelsForAuth(a *coreauth.Auth) {
 	case "iflow":
 		models = registry.GetIFlowModels()
 		models = applyExcludedModels(models, excluded)
+	case "kiro":
+		models = registry.GetKiroModels()
+		models = applyExcludedModels(models, excluded)
 	default:
 		// Handle OpenAI-compatibility providers by name using config
 		if s.cfg != nil {