In bot only lobbies I frequently run into a situation where I have a large health difference with a bot, and I Know I'm going to win, but there will still be like five whole rounds of the bot throwing itself against the brick wall of my completed party with no effect until I've 'officially' won
I propose that if
The only players in the lobby are one human player and one bot
and
The bot's health is Significantly lower than the player's (something like 30-50 hp behind. When you know they're not going to recover at this point)
(and if you really want to make sure, I guess an additional condition of the player having a full team of three star companions but I'm not sure if that's necessary)
The bot would concede
Why? There isn't exactly gameplay happening at this point, you are just waiting for the bot to die, so going ahead and giving the human player their rewards already may reduce player frustration by a decent bit.
A human player of course is capable of complex thought and turning the battle around in those five or so turns, so that wouldn't be necessary there, but a bot can't really do that anyway (and if they luck out last round and do it's only really annoying rng vs actually being bested in a challenge) so I feel like this would be a nice QoL fix for the arena!