Is it my understanding that it is prefered to have smoke alarms on a lighting/receptical circuit instead of it's own circuit?

Also any changes since the CEC 18th addition on smoke alarms?

Also off topic if permit is secured before Jan 03 do you need the GFCI in the kitchen circuits by sink? It should be roughed in before then.

Thanks to the forum I disscovered the AFCIs in bedrooms.