It doesn’t seem like the computer opponent takes Hall Pass into account: I just watched an opponent play Hall Pass (which should have shown them their next draw) and then play the next card which made them bust.
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yes, the way the AI works is visible to the player, the only thing taken into account is their current total.
They should probably make the AI smarter so that it could look into it's own deck and possibly stand if they have a sufficient chance of busting, but this would ruin their predictability. They could at least make it so that hall pass and stuff like that give them somewhat of an advantage, or make sure they don't make choices that guarantee they bust, like with official trump card.
I honestly wonder how stuff like using graveyard cards is decided.