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

internal/api/server.go

@@ -902,7 +902,7 @@ func (s *Server) UpdateClients(cfg *config.Config) {
 	for _, p := range cfg.OpenAICompatibility {
 		providerNames = append(providerNames, p.Name)
 	}
-	s.handlers.OpenAICompatProviders = providerNames
+	s.handlers.SetOpenAICompatProviders(providerNames)
 
 	s.handlers.UpdateClients(&cfg.SDKConfig)