add log position tracking

local/repository/state_history.go

@@ -26,3 +26,21 @@ func (r *StateHistoryRepository) GetAll(ctx context.Context, filter *model.State
 func (r *StateHistoryRepository) Insert(ctx context.Context, model *model.StateHistory) error {
 	return r.BaseRepository.Insert(ctx, model)
 }
+
+// GetLastSessionID gets the last session ID for a server
+func (r *StateHistoryRepository) GetLastSessionID(ctx context.Context, serverID uint) (uint, error) {
+	var lastSession model.StateHistory
+	result := r.BaseRepository.db.WithContext(ctx).
+		Where("server_id = ?", serverID).
+		Order("session_id DESC").
+		First(&lastSession)
+
+	if result.Error != nil {
+		if result.Error == gorm.ErrRecordNotFound {
+			return 0, nil // Return 0 if no sessions found
+		}
+		return 0, result.Error
+	}
+
+	return lastSession.SessionID, nil
+}