As in the title – what’s going to happen with my gold in the Bazaar?
I’ve capped my gold in the inventory a long, long time ago, so I can’t collect any more from the Bazaar.
Will it disappear at the end of the cycle or what?
It stays there until you redeem the sale. At the end of the season all items will migrate from the seasonal realm to the legacy one, including the ones that you have to redeem.
You’ll likely have to migrate your stuff first, but nothing should go away.
This isn’t an official answer, though, so you shold go ask the devs on discord to be 100% sure.