all abilities on short rest.
short rest of 5 min.
long rest restores HPs, HDs(healing surges), and removes most negative conditions(ability damage, exhaustion, diseases, etc...) and prevents additional exhaustion by avoiding being awake for more than 24hrs.
Healing depends on having HDs to spend in combination with magic healing.
I.E. Cure spell could heal for 1d12 per spell level, but you need to spend HD for every spell level.
For every spell level not supported by HD, you heal 1d4 instead.
Add HDs roll normally for additional healing.