refactor: remove dataset cron records

backend/internal/crontab/dataset_test.go

@@ -9,7 +9,7 @@ import (
 	"time"
 
 	"github.com/stretchr/testify/require"
-	"senlinai-agent/backend/internal/models"
+	"senlinai-agent/backend/internal/logic/dataset"
 )
 
 func TestDatasetSchedulerCollectsImmediatelyAndRepeats(t *testing.T) {
@@ -95,13 +95,13 @@ type recordingDatasetCollector struct {
 	calls chan time.Time
 }
 
-func (c *recordingDatasetCollector) SyncAllSources(context.Context) ([]models.SaDatasetCron, error) {
+func (c *recordingDatasetCollector) SyncAllSources(context.Context) ([]dataset.SyncResult, error) {
 	now := time.Now()
 	c.mu.Lock()
 	c.count++
 	c.mu.Unlock()
 	c.calls <- now
-	return []models.SaDatasetCron{{Status: "completed"}}, nil
+	return []dataset.SyncResult{{Status: "completed"}}, nil
 }
 
 func (c *recordingDatasetCollector) callCount() int {
@@ -128,7 +128,7 @@ type blockingDatasetCollector struct {
 	release chan struct{}
 }
 
-func (c *blockingDatasetCollector) SyncAllSources(ctx context.Context) ([]models.SaDatasetCron, error) {
+func (c *blockingDatasetCollector) SyncAllSources(ctx context.Context) ([]dataset.SyncResult, error) {
 	c.mu.Lock()
 	c.count++
 	c.mu.Unlock()