I would concur, an essential step to full agriculture is being able to time-shift. ie, to store and allocate appropriate resources from times and locations of plenty to times and locations of scarcity.
This implies technologies for both processing - ie, freezing, drying, salting, smoking, powdering, etc., and actual storage which involves both weatherproofing and protection from mold, rot, insects and vermin.
Semi-sedentary hunter/gatherer cultures do this. For instance, Cree fishing communities up and down the Nelson and Churchill river would catch large fall harvests of fish, dry and smoke them and remain in a stable location for the winter. In extremely productive fisheries, a community might hold a location year round. The Andean cultures seem to have originated on fish protein.