Duplicated raws, yes. I'm doing this as practice for a potential Dawnthunders turn, hence the rather... Extreme... conditions and the inclusion of that; I wanted to be properly prepared, and part of that is this sort of nonsense. (I decided that the version where I duplicated them in such a way that my tools immediately turned into magma on embark was a bit too much, though. This, I can probably manage; no picks, no axes, and all caravans having a high chance of spontaneous combustion, not so much.)
I decided to open up for a large migrant wave halfway through making my proper entrance, which is going to incorporate the most recent recommendations now that it's a bit less urgent. (Not, I admit, a totally altruistic plan. Having
eight dwarven thralls on the surface was a horrifying prospect and I took a chance while the current population of one such horror was away from the entrance). I briefly spiked to eleven residents, but I delayed resealing the entrance to get the pets in too.
Four dwarves were struck down immediately, and two more were gravely wounded, when it showed up just as the last animal entered the fortress. The fortress's planter, acting more bravely than expected from a civilian who'd just seen her home turned into an abattoir, leapt into the fray, taking serious injuries before finally getting in one decisive - and frankly quite impressive - blow.
I initially meant to starve her in a locked room, but a quarantine breach revealed her to be seemingly peaceful, and others happy to let her be. A quick check also confirmed her as a member of my site and the parent civilization, so since this doesn't appear to have caused a loyalty cascade - possibly due to the incident where this thrall and the other two who got caught fought to the death - she's been integrated back into the fort.
Unfortunately, while stable, the two injured dwarves mentioned above died to a lack of water; an emergency well was completed just too late to save them. This left the total at five dwarves... Which was somehow still an improvement on before. Says something about the state of this place, that does.
The caravan showed up soon after that, so I let them in too. They made it inside without incident, and I was soon in possession of a shiny new nickel anvil. Although it's a mixed blessing - the fortress was slain by a berserk donkey, of all things, after the merchants refused to leave in any of the brief windows where they could safely do so.
Still. This should be reclaimable. Thanks for the help; I might make a thread on the story board, if it works out.