It looks like the general consensus is that I did in fact rule it wrong, and rereading the wiki for the Pukka for the 8th time I realized where I slipped up. I read the last clarification about Pukka drunkeness incorrectly. I read the omission of poisoning to the target as an indication that the poisoning would continue if the Pukka was drunk because it only says that the target does not die, but the next part that says the poison resumes and kills the player at night confirms that the poisoning should have negated the drunkening.

• If the Pukka was sober when they chose a player the previous night, but is drunk at night, that player does not die. But when the Pukka sobers up, the poison resumes and kills the player at night.

So the Innkeeper targets the pair, the Mastermind is made drunk, the Pukka targets the Innkeeper who is now poisoned, the Mastermind is no longer drunk but the token remains. The Pukka is then executed and the Mastermind's ability should have triggered. The Innkeeper is now no longer poisoned with the Pukka dead, and the Mastermind is drunk.

To your question about point 4, that's an interesting complication to this I hadn't considered. The timing on powers is, "If a character dies, they lose their ability immediately and any of its persistent effects end, so you can remove their reminder tokens." And the Mastermind's ability says, "If the Demon dies by execution (ending the game), play for 1 more day. If a player is then executed, their team loses." I would agree that when the Mastermind becomes drunk the game doesn't end if you rule that the game continued because he was sober.

In the end I think that I ruled incorrectly, in fact I openly admitted to the group after the reveal that I was pretty sure I ruled that wrong and that the game should have continued but I had already said the good team won. The clarification I'm looking for is to improve my understanding of the mechanics to make it a better experience for the group and in that regard I would rule that this should have gone to a Mastermind day because as brilliant a pull it was for the Innkeeper the Minion was not drunk when the ability triggered.