fix(grok): satisfy pool health lint

backend/internal/repository/account_repo_temp_unsched_test.go

@@ -297,7 +297,9 @@ func TestAccountRepository_ListOAuthRefreshCandidatePage_SQLFilter(t *testing.T)
 	require.Len(t, capturedArgs, 3)
 	require.Equal(t, int64(100), capturedArgs[1])
 	require.Equal(t, 200, capturedArgs[2])
-	platforms, err := capturedArgs[0].(interface{ Value() (driver.Value, error) }).Value()
+	valuer, ok := capturedArgs[0].(interface{ Value() (driver.Value, error) })
+	require.True(t, ok)
+	platforms, err := valuer.Value()
 	require.NoError(t, err)
 	require.Contains(t, platforms, service.PlatformGrok)
 	require.NoError(t, mock.ExpectationsWereMet())

backend/internal/service/grok_oauth_reconciliation.go

@@ -170,11 +170,11 @@ func (s *TokenRefreshService) ReconcileGrokOAuth(ctx context.Context, input Grok
 
 	registration, ok := s.grokRegistration()
 	if !ok {
-		return nil, errors.New("Grok OAuth refresher is not registered")
+		return nil, errors.New("grok OAuth refresher is not registered")
 	}
 	conditionalErrorRepo, supportsConditionalError := s.accountRepo.(GrokOAuthConditionalErrorRepository)
 	if input.Apply && !supportsConditionalError {
-		return nil, errors.New("Grok OAuth conditional error mutation is not configured")
+		return nil, errors.New("grok OAuth conditional error mutation is not configured")
 	}
 	providerState := &tokenRefreshProviderState{
 		service:      s,

backend/internal/service/oauth_refresh_api.go

@@ -297,7 +297,7 @@ func (api *OAuthRefreshAPI) RefreshIfNeeded(
 			conditionalRepo, ok := api.accountRepo.(GrokOAuthRefreshSuccessRepository)
 			if !ok {
 				return nil, &providerConfigurationRefreshError{
-					err: fmt.Errorf("Grok OAuth refresh success CAS repository is not configured"),
+					err: fmt.Errorf("grok OAuth refresh success CAS repository is not configured"),
 				}
 			}
 			applied, updateErr := conditionalRepo.UpdateGrokOAuthCredentialsIfUnchanged(

backend/internal/service/token_refresh_service_candidates_test.go

@@ -98,15 +98,6 @@ func (r *tokenRefreshCandidateRepo) ClearTempUnschedulable(context.Context, int6
 	return nil
 }
 
-func isOAuthRefreshPlatform(platform string) bool {
-	switch platform {
-	case PlatformAnthropic, PlatformOpenAI, PlatformGemini, PlatformAntigravity, PlatformGrok:
-		return true
-	default:
-		return false
-	}
-}
-
 type tokenRefreshTestRefresher struct {
 	err error
 }